blender-archive/source/blender/blenkernel/intern/writeffmpeg.c

/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * Contributor(s):
 *
 * Partial Copyright (c) 2006 Peter Schlaile
 *
 * ***** END GPL LICENSE BLOCK *****
 */

/** \file blender/blenkernel/intern/writeffmpeg.c
 *  \ingroup bke
 */

#ifdef WITH_FFMPEG
#include <string.h>
#include <stdio.h>

#include <stdlib.h>

#include <libavformat/avformat.h>
#include <libavcodec/avcodec.h>
#include <libavutil/rational.h>
#include <libavutil/samplefmt.h>
#include <libswscale/swscale.h>

#include "MEM_guardedalloc.h"

#include "DNA_scene_types.h"

#include "BLI_blenlib.h"

#ifdef WITH_AUDASPACE
#  include <AUD_Device.h>
#  include <AUD_Special.h>
#endif

#include "BLI_utildefines.h"

#include "BKE_global.h"
#include "BKE_idprop.h"
#include "BKE_image.h"
#include "BKE_main.h"
#include "BKE_report.h"
#include "BKE_sound.h"
#include "BKE_writeffmpeg.h"

#include "IMB_imbuf.h"

#include "ffmpeg_compat.h"

struct StampData;

typedef struct FFMpegContext {
	int ffmpeg_type;
	int ffmpeg_codec;
	int ffmpeg_audio_codec;
	int ffmpeg_video_bitrate;
	int ffmpeg_audio_bitrate;
	int ffmpeg_gop_size;
	int ffmpeg_max_b_frames;
	int ffmpeg_autosplit;
	int ffmpeg_autosplit_count;
	bool ffmpeg_preview;

	int ffmpeg_crf;  /* set to 0 to not use CRF mode; we have another flag for lossless anyway. */
	int ffmpeg_preset; /* see eFFMpegPreset */

	AVFormatContext *outfile;
	AVStream *video_stream;
	AVStream *audio_stream;
	AVFrame *current_frame;
	struct SwsContext *img_convert_ctx;

	uint8_t *audio_input_buffer;
	uint8_t *audio_deinterleave_buffer;
	int audio_input_samples;
#ifndef FFMPEG_HAVE_ENCODE_AUDIO2
	uint8_t *audio_output_buffer;
	int audio_outbuf_size;
#endif
	double audio_time;
	bool audio_deinterleave;
	int audio_sample_size;

	struct StampData *stamp_data;

#ifdef WITH_AUDASPACE
	AUD_Device *audio_mixdown_device;
#endif
} FFMpegContext;

#define FFMPEG_AUTOSPLIT_SIZE 2000000000

#define PRINT if (G.debug & G_DEBUG_FFMPEG) printf

static void ffmpeg_dict_set_int(AVDictionary **dict, const char *key, int value);
static void ffmpeg_dict_set_float(AVDictionary **dict, const char *key, float value);
static void ffmpeg_set_expert_options(RenderData *rd);
static void ffmpeg_filepath_get(FFMpegContext *context, char *string, struct RenderData *rd, bool preview, const char *suffix);

/* Delete a picture buffer */

static void delete_picture(AVFrame *f)
{
	if (f) {
		if (f->data[0]) MEM_freeN(f->data[0]);
		av_free(f);
	}
}

static int request_float_audio_buffer(int codec_id)
{
	/* If any of these codecs, we prefer the float sample format (if supported) */
	return codec_id == AV_CODEC_ID_AAC || codec_id == AV_CODEC_ID_AC3 || codec_id == AV_CODEC_ID_VORBIS;
}

#ifdef WITH_AUDASPACE
static int write_audio_frame(FFMpegContext *context)
{
	AVCodecContext *c = NULL;
	AVPacket pkt;
	AVFrame *frame = NULL;
	int got_output = 0;

	c = context->audio_stream->codec;

	av_init_packet(&pkt);
	pkt.size = 0;
	pkt.data = NULL;

	AUD_Device_read(context->audio_mixdown_device, context->audio_input_buffer, context->audio_input_samples);
	context->audio_time += (double) context->audio_input_samples / (double) c->sample_rate;

#ifdef FFMPEG_HAVE_ENCODE_AUDIO2
	frame = av_frame_alloc();
	av_frame_unref(frame);
	frame->pts = context->audio_time / av_q2d(c->time_base);
	frame->nb_samples = context->audio_input_samples;
	frame->format = c->sample_fmt;
#ifdef FFMPEG_HAVE_FRAME_CHANNEL_LAYOUT
	frame->channel_layout = c->channel_layout;
#endif

	if (context->audio_deinterleave) {
		int channel, i;
		uint8_t *temp;

		for (channel = 0; channel < c->channels; channel++) {
			for (i = 0; i < frame->nb_samples; i++) {
				memcpy(context->audio_deinterleave_buffer + (i + channel * frame->nb_samples) * context->audio_sample_size,
				       context->audio_input_buffer + (c->channels * i + channel) * context->audio_sample_size, context->audio_sample_size);
			}
		}

		temp = context->audio_deinterleave_buffer;
		context->audio_deinterleave_buffer = context->audio_input_buffer;
		context->audio_input_buffer = temp;
	}

	avcodec_fill_audio_frame(frame, c->channels, c->sample_fmt, context->audio_input_buffer,
	                         context->audio_input_samples * c->channels * context->audio_sample_size, 1);

	if (avcodec_encode_audio2(c, &pkt, frame, &got_output) < 0) {
		// XXX error("Error writing audio packet");
		return -1;
	}

	if (!got_output) {
		av_frame_free(&frame);
		return 0;
	}
#else
	pkt.size = avcodec_encode_audio(c, context->audio_output_buffer, context->audio_outbuf_size, (short *) context->audio_input_buffer);

	if (pkt.size < 0) {
		// XXX error("Error writing audio packet");
		return -1;
	}

	pkt.data = context->audio_output_buffer;
	got_output = 1;
#endif

	if (got_output) {
		if (pkt.pts != AV_NOPTS_VALUE)
			pkt.pts = av_rescale_q(pkt.pts, c->time_base, context->audio_stream->time_base);
		if (pkt.dts != AV_NOPTS_VALUE)
			pkt.dts = av_rescale_q(pkt.dts, c->time_base, context->audio_stream->time_base);
		if (pkt.duration > 0)
			pkt.duration = av_rescale_q(pkt.duration, c->time_base, context->audio_stream->time_base);

		pkt.stream_index = context->audio_stream->index;

		pkt.flags |= AV_PKT_FLAG_KEY;

		if (av_interleaved_write_frame(context->outfile, &pkt) != 0) {
			fprintf(stderr, "Error writing audio packet!\n");
			if (frame)
				av_frame_free(&frame);
			return -1;
		}

		av_free_packet(&pkt);
	}

	if (frame)
		av_frame_free(&frame);

	return 0;
}
#endif // #ifdef WITH_AUDASPACE

/* Allocate a temporary frame */
static AVFrame *alloc_picture(int pix_fmt, int width, int height)
{
	AVFrame *f;
	uint8_t *buf;
	int size;

	/* allocate space for the struct */
	f = av_frame_alloc();
	if (!f) return NULL;
	size = avpicture_get_size(pix_fmt, width, height);
	/* allocate the actual picture buffer */
	buf = MEM_mallocN(size, "AVFrame buffer");
	if (!buf) {
		free(f);
		return NULL;
	}
	avpicture_fill((AVPicture *)f, buf, pix_fmt, width, height);
	return f;
}

/* Get the correct file extensions for the requested format,
 * first is always desired guess_format parameter */
static const char **get_file_extensions(int format)
{
	switch (format) {
		case FFMPEG_DV:
		{
			static const char *rv[] = { ".dv", NULL };
			return rv;
		}
		case FFMPEG_MPEG1:
		{
			static const char *rv[] = { ".mpg", ".mpeg", NULL };
			return rv;
		}
		case FFMPEG_MPEG2:
		{
			static const char *rv[] = { ".dvd", ".vob", ".mpg", ".mpeg", NULL };
			return rv;
		}
		case FFMPEG_MPEG4:
		{
			static const char *rv[] = { ".mp4", ".mpg", ".mpeg", NULL };
			return rv;
		}
		case FFMPEG_AVI:
		{
			static const char *rv[] = { ".avi", NULL };
			return rv;
		}
		case FFMPEG_MOV:
		{
			static const char *rv[] = { ".mov", NULL };
			return rv;
		}
		case FFMPEG_H264:
		{
			/* FIXME: avi for now... */
			static const char *rv[] = { ".avi", NULL };
			return rv;
		}

		case FFMPEG_XVID:
		{
			/* FIXME: avi for now... */
			static const char *rv[] = { ".avi", NULL };
			return rv;
		}
		case FFMPEG_FLV:
		{
			static const char *rv[] = { ".flv", NULL };
			return rv;
		}
		case FFMPEG_MKV:
		{
			static const char *rv[] = { ".mkv", NULL };
			return rv;
		}
		case FFMPEG_OGG:
		{
			static const char *rv[] = { ".ogv", ".ogg", NULL };
			return rv;
		}
		default:
			return NULL;
	}
}

/* Write a frame to the output file */
static int write_video_frame(FFMpegContext *context, RenderData *rd, int cfra, AVFrame *frame, ReportList *reports)
{
	int got_output;
	int ret, success = 1;
	AVCodecContext *c = context->video_stream->codec;
	AVPacket packet = { 0 };

	av_init_packet(&packet);

	frame->pts = cfra;

	ret = avcodec_encode_video2(c, &packet, frame, &got_output);

	if (ret >= 0 && got_output) {
		if (packet.pts != AV_NOPTS_VALUE) {
			packet.pts = av_rescale_q(packet.pts, c->time_base, context->video_stream->time_base);
			PRINT("Video Frame PTS: %d\n", (int)packet.pts);
		}
		else {
			PRINT("Video Frame PTS: not set\n");
		}
		if (packet.dts != AV_NOPTS_VALUE) {
			packet.dts = av_rescale_q(packet.dts, c->time_base, context->video_stream->time_base);
			PRINT("Video Frame DTS: %d\n", (int)packet.dts);
		}
		else {
			PRINT("Video Frame DTS: not set\n");
		}

		packet.stream_index = context->video_stream->index;
		ret = av_interleaved_write_frame(context->outfile, &packet);
		success = (ret == 0);
	}
	else if (ret < 0) {
		success = 0;
	}

	if (!success)
		BKE_report(reports, RPT_ERROR, "Error writing frame");

	return success;
}

/* read and encode a frame of audio from the buffer */
static AVFrame *generate_video_frame(FFMpegContext *context, uint8_t *pixels, ReportList *reports)
{
	uint8_t *rendered_frame;

	AVCodecContext *c = context->video_stream->codec;
	int width = c->width;
	int height = c->height;
	AVFrame *rgb_frame;

	if (c->pix_fmt != AV_PIX_FMT_BGR32) {
		rgb_frame = alloc_picture(AV_PIX_FMT_BGR32, width, height);
		if (!rgb_frame) {
			BKE_report(reports, RPT_ERROR, "Could not allocate temporary frame");
			return NULL;
		}
	}
	else {
		rgb_frame = context->current_frame;
	}

	rendered_frame = pixels;

	/* Do RGBA-conversion and flipping in one step depending
	 * on CPU-Endianess */

	if (ENDIAN_ORDER == L_ENDIAN) {
		int y;
		for (y = 0; y < height; y++) {
			uint8_t *target = rgb_frame->data[0] + width * 4 * (height - y - 1);
			uint8_t *src = rendered_frame + width * 4 * y;
			uint8_t *end = src + width * 4;
			while (src != end) {
				target[3] = src[3];
				target[2] = src[2];
				target[1] = src[1];
				target[0] = src[0];

				target += 4;
				src += 4;
			}
		}
	}
	else {
		int y;
		for (y = 0; y < height; y++) {
			uint8_t *target = rgb_frame->data[0] + width * 4 * (height - y - 1);
			uint8_t *src = rendered_frame + width * 4 * y;
			uint8_t *end = src + width * 4;
			while (src != end) {
				target[3] = src[0];
				target[2] = src[1];
				target[1] = src[2];
				target[0] = src[3];

				target += 4;
				src += 4;
			}
		}
	}

	if (c->pix_fmt != AV_PIX_FMT_BGR32) {
		sws_scale(context->img_convert_ctx, (const uint8_t *const *) rgb_frame->data,
		          rgb_frame->linesize, 0, c->height,
		          context->current_frame->data, context->current_frame->linesize);
		delete_picture(rgb_frame);
	}

	context->current_frame->format = AV_PIX_FMT_BGR32;
	context->current_frame->width = width;
	context->current_frame->height = height;

	return context->current_frame;
}

static void set_ffmpeg_property_option(AVCodecContext *c, IDProperty *prop, AVDictionary **dictionary)
{
	char name[128];
	char *param;

	PRINT("FFMPEG expert option: %s: ", prop->name);

	BLI_strncpy(name, prop->name, sizeof(name));

	param = strchr(name, ':');

	if (param) {
		*param++ = '\0';
	}

	switch (prop->type) {
		case IDP_STRING:
			PRINT("%s.\n", IDP_String(prop));
			av_dict_set(dictionary, name, IDP_String(prop), 0);
			break;
		case IDP_FLOAT:
			PRINT("%g.\n", IDP_Float(prop));
			ffmpeg_dict_set_float(dictionary, prop->name, IDP_Float(prop));
			break;
		case IDP_INT:
			PRINT("%d.\n", IDP_Int(prop));

			if (param) {
				if (IDP_Int(prop)) {
					av_dict_set(dictionary, name, param, 0);
				}
				else {
					return;
				}
			}
			else {
				ffmpeg_dict_set_int(dictionary, prop->name, IDP_Int(prop));
			}
			break;
	}
}

static int ffmpeg_proprty_valid(AVCodecContext *c, const char *prop_name, IDProperty *curr)
{
	int valid = 1;

	if (STREQ(prop_name, "video")) {
		if (STREQ(curr->name, "bf")) {
			/* flash codec doesn't support b frames */
			valid &= c->codec_id != AV_CODEC_ID_FLV1;
		}
	}

	return valid;
}

static void set_ffmpeg_properties(RenderData *rd, AVCodecContext *c, const char *prop_name,
                                  AVDictionary **dictionary)
{
	IDProperty *prop;
	IDProperty *curr;

	/* TODO(sergey): This is actually rather stupid, because changing
	 * codec settings in render panel would also set expert options.
	 *
	 * But we need ti here in order to get rid of deprecated settings
	 * when opening old files in new blender.
	 *
	 * For as long we don't allow editing properties in the interface
	 * it's all good. bug if we allow editing them, we'll need to
	 * replace it with some smarter code which would port settings
	 * from deprecated to new one.
	 */
	ffmpeg_set_expert_options(rd);

	if (!rd->ffcodecdata.properties) {
		return;
	}

	prop = IDP_GetPropertyFromGroup(rd->ffcodecdata.properties, prop_name);
	if (!prop) {
		return;
	}

	for (curr = prop->data.group.first; curr; curr = curr->next) {
		if (ffmpeg_proprty_valid(c, prop_name, curr))
			set_ffmpeg_property_option(c, curr, dictionary);
	}
}

/* prepare a video stream for the output file */

static AVStream *alloc_video_stream(FFMpegContext *context, RenderData *rd, int codec_id, AVFormatContext *of,
                                    int rectx, int recty, char *error, int error_size)
{
	AVStream *st;
	AVCodecContext *c;
	AVCodec *codec;
	AVDictionary *opts = NULL;

	error[0] = '\0';

	st = avformat_new_stream(of, NULL);
	if (!st) return NULL;
	st->id = 0;

	/* Set up the codec context */

	c = st->codec;
	c->codec_id = codec_id;
	c->codec_type = AVMEDIA_TYPE_VIDEO;

	/* Get some values from the current render settings */

	c->width = rectx;
	c->height = recty;

	/* FIXME: Really bad hack (tm) for NTSC support */
	if (context->ffmpeg_type == FFMPEG_DV && rd->frs_sec != 25) {
		c->time_base.den = 2997;
		c->time_base.num = 100;
	}
	else if ((float) ((int) rd->frs_sec_base) == rd->frs_sec_base) {
		c->time_base.den = rd->frs_sec;
		c->time_base.num = (int) rd->frs_sec_base;
	}
	else {
		c->time_base.den = rd->frs_sec * 100000;
		c->time_base.num = ((double) rd->frs_sec_base) * 100000;
	}

	c->gop_size = context->ffmpeg_gop_size;
	c->max_b_frames = context->ffmpeg_max_b_frames;

	if (context->ffmpeg_crf >= 0) {
		ffmpeg_dict_set_int(&opts, "crf", context->ffmpeg_crf);
	}
	else {
		c->bit_rate = context->ffmpeg_video_bitrate * 1000;
		c->rc_max_rate = rd->ffcodecdata.rc_max_rate * 1000;
		c->rc_min_rate = rd->ffcodecdata.rc_min_rate * 1000;
		c->rc_buffer_size = rd->ffcodecdata.rc_buffer_size * 1024;
	}

	if (context->ffmpeg_preset) {
		/* 'preset' is used by h.264, 'deadline' is used by webm/vp9. I'm not
		 * setting those properties conditionally based on the video codec,
		 * as the FFmpeg encoder simply ignores unknown settings anyway. */
		char const *preset_name = NULL;  /* used by h.264 */
		char const *deadline_name = NULL; /* used by webm/vp9 */
		switch (context->ffmpeg_preset) {
			case FFM_PRESET_GOOD:
				preset_name = "medium";
				deadline_name = "good";
				break;
			case FFM_PRESET_BEST:
				preset_name = "slower";
				deadline_name = "best";
				break;
			case FFM_PRESET_REALTIME:
				preset_name = "superfast";
				deadline_name = "realtime";
				break;
			default:
				printf("Unknown preset number %i, ignoring.\n", context->ffmpeg_preset);
		}
		if (preset_name != NULL) {
			av_dict_set(&opts, "preset", preset_name, 0);
		}
		if (deadline_name != NULL) {
			av_dict_set(&opts, "deadline", deadline_name, 0);
		}
	}

#if 0
	/* this options are not set in ffmpeg.c and leads to artifacts with MPEG-4
	 * see #33586: Encoding to mpeg4 makes first frame(s) blocky
	 */
	c->rc_initial_buffer_occupancy = rd->ffcodecdata.rc_buffer_size * 3 / 4;
	c->rc_buffer_aggressivity = 1.0;
#endif

	/* Deprecated and not doing anything since July 2015, deleted in recent ffmpeg */
	//c->me_method = ME_EPZS;

	codec = avcodec_find_encoder(c->codec_id);
	if (!codec)
		return NULL;

	/* Be sure to use the correct pixel format(e.g. RGB, YUV) */

	if (codec->pix_fmts) {
		c->pix_fmt = codec->pix_fmts[0];
	}
	else {
		/* makes HuffYUV happy ... */
		c->pix_fmt = AV_PIX_FMT_YUV422P;
	}

	if (context->ffmpeg_type == FFMPEG_XVID) {
		/* arghhhh ... */
		c->pix_fmt = AV_PIX_FMT_YUV420P;
		c->codec_tag = (('D' << 24) + ('I' << 16) + ('V' << 8) + 'X');
	}

	if (codec_id == AV_CODEC_ID_H264) {
		/* correct wrong default ffmpeg param which crash x264 */
		c->qmin = 10;
		c->qmax = 51;
	}

	/* Keep lossless encodes in the RGB domain. */
	if (codec_id == AV_CODEC_ID_HUFFYUV) {
		if (rd->im_format.planes == R_IMF_PLANES_RGBA) {
			c->pix_fmt = AV_PIX_FMT_BGRA;
		}
		else {
			c->pix_fmt = AV_PIX_FMT_RGB32;
		}
	}

	if (codec_id == AV_CODEC_ID_FFV1) {
		c->pix_fmt = AV_PIX_FMT_RGB32;
	}

	if (codec_id == AV_CODEC_ID_QTRLE) {
		if (rd->im_format.planes == R_IMF_PLANES_RGBA) {
			c->pix_fmt = AV_PIX_FMT_ARGB;
		}
	}

	if (codec_id == AV_CODEC_ID_PNG) {
		if (rd->im_format.planes == R_IMF_PLANES_RGBA) {
			c->pix_fmt = AV_PIX_FMT_RGBA;
		}
	}

	if ((of->oformat->flags & AVFMT_GLOBALHEADER)
#if 0
	    || STREQ(of->oformat->name, "mp4")
	    || STREQ(of->oformat->name, "mov")
	    || STREQ(of->oformat->name, "3gp")
#endif
	    )
	{
		PRINT("Using global header\n");
		c->flags |= CODEC_FLAG_GLOBAL_HEADER;
	}

	/* xasp & yasp got float lately... */

	st->sample_aspect_ratio = c->sample_aspect_ratio = av_d2q(((double) rd->xasp / (double) rd->yasp), 255);
	st->avg_frame_rate = av_inv_q(c->time_base);

	set_ffmpeg_properties(rd, c, "video", &opts);

	if (avcodec_open2(c, codec, &opts) < 0) {
		BLI_strncpy(error, IMB_ffmpeg_last_error(), error_size);
		av_dict_free(&opts);
		return NULL;
	}
	av_dict_free(&opts);

	context->current_frame = alloc_picture(c->pix_fmt, c->width, c->height);

	context->img_convert_ctx = sws_getContext(c->width, c->height, AV_PIX_FMT_BGR32, c->width, c->height, c->pix_fmt, SWS_BICUBIC,
	                                          NULL, NULL, NULL);
	return st;
}

static AVStream *alloc_audio_stream(FFMpegContext *context, RenderData *rd, int codec_id, AVFormatContext *of, char *error, int error_size)
{
	AVStream *st;
	AVCodecContext *c;
	AVCodec *codec;
	AVDictionary *opts = NULL;

	error[0] = '\0';

	st = avformat_new_stream(of, NULL);
	if (!st) return NULL;
	st->id = 1;

	c = st->codec;
	c->codec_id = codec_id;
	c->codec_type = AVMEDIA_TYPE_AUDIO;

	c->sample_rate = rd->ffcodecdata.audio_mixrate;
	c->bit_rate = context->ffmpeg_audio_bitrate * 1000;
	c->sample_fmt = AV_SAMPLE_FMT_S16;
	c->channels = rd->ffcodecdata.audio_channels;

	if (request_float_audio_buffer(codec_id)) {
		/* mainly for AAC codec which is experimental */
		c->strict_std_compliance = FF_COMPLIANCE_EXPERIMENTAL;
		c->sample_fmt = AV_SAMPLE_FMT_FLT;
	}

	codec = avcodec_find_encoder(c->codec_id);
	if (!codec) {
		//XXX error("Couldn't find a valid audio codec");
		return NULL;
	}

	if (codec->sample_fmts) {
		/* check if the preferred sample format for this codec is supported.
		 * this is because, depending on the version of libav, and with the whole ffmpeg/libav fork situation,
		 * you have various implementations around. float samples in particular are not always supported.
		 */
		const enum AVSampleFormat *p = codec->sample_fmts;
		for (; *p != -1; p++) {
			if (*p == st->codec->sample_fmt)
				break;
		}
		if (*p == -1) {
			/* sample format incompatible with codec. Defaulting to a format known to work */
			st->codec->sample_fmt = codec->sample_fmts[0];
		}
	}

	if (codec->supported_samplerates) {
		const int *p = codec->supported_samplerates;
		int best = 0;
		int best_dist = INT_MAX;
		for (; *p; p++) {
			int dist = abs(st->codec->sample_rate - *p);
			if (dist < best_dist) {
				best_dist = dist;
				best = *p;
			}
		}
		/* best is the closest supported sample rate (same as selected if best_dist == 0) */
		st->codec->sample_rate = best;
	}

	if (of->oformat->flags & AVFMT_GLOBALHEADER) {
		c->flags |= CODEC_FLAG_GLOBAL_HEADER;
	}

	set_ffmpeg_properties(rd, c, "audio", &opts);

	if (avcodec_open2(c, codec, &opts) < 0) {
		//XXX error("Couldn't initialize audio codec");
		BLI_strncpy(error, IMB_ffmpeg_last_error(), error_size);
		av_dict_free(&opts);
		return NULL;
	}
	av_dict_free(&opts);

	/* need to prevent floating point exception when using vorbis audio codec,
	 * initialize this value in the same way as it's done in FFmpeg itself (sergey) */
	st->codec->time_base.num = 1;
	st->codec->time_base.den = st->codec->sample_rate;

#ifndef FFMPEG_HAVE_ENCODE_AUDIO2
	context->audio_outbuf_size = FF_MIN_BUFFER_SIZE;
#endif

	if (c->frame_size == 0)
		// used to be if ((c->codec_id >= CODEC_ID_PCM_S16LE) && (c->codec_id <= CODEC_ID_PCM_DVD))
		// not sure if that is needed anymore, so let's try out if there are any
		// complaints regarding some ffmpeg versions users might have
		context->audio_input_samples = FF_MIN_BUFFER_SIZE * 8 / c->bits_per_coded_sample / c->channels;
	else {
		context->audio_input_samples = c->frame_size;
#ifndef FFMPEG_HAVE_ENCODE_AUDIO2
		if (c->frame_size * c->channels * sizeof(int16_t) * 4 > context->audio_outbuf_size)
			context->audio_outbuf_size = c->frame_size * c->channels * sizeof(int16_t) * 4;
#endif
	}

	context->audio_deinterleave = av_sample_fmt_is_planar(c->sample_fmt);

	context->audio_sample_size = av_get_bytes_per_sample(c->sample_fmt);

	context->audio_input_buffer = (uint8_t *) av_malloc(context->audio_input_samples * c->channels * context->audio_sample_size);
#ifndef FFMPEG_HAVE_ENCODE_AUDIO2
	context->audio_output_buffer = (uint8_t *) av_malloc(context->audio_outbuf_size);
#endif

	if (context->audio_deinterleave)
		context->audio_deinterleave_buffer = (uint8_t *) av_malloc(context->audio_input_samples * c->channels * context->audio_sample_size);

	context->audio_time = 0.0f;

	return st;
}
/* essential functions -- start, append, end */

static void ffmpeg_dict_set_int(AVDictionary **dict, const char *key, int value)
{
	char buffer[32];

	BLI_snprintf(buffer, sizeof(buffer), "%d", value);

	av_dict_set(dict, key, buffer, 0);
}

static void ffmpeg_dict_set_float(AVDictionary **dict, const char *key, float value)
{
	char buffer[32];

	BLI_snprintf(buffer, sizeof(buffer), "%.8f", value);

	av_dict_set(dict, key, buffer, 0);
}

static void ffmpeg_add_metadata_callback(void *data, const char *propname, char *propvalue, int len)
{
	AVDictionary **metadata = (AVDictionary **)data;
	av_dict_set(metadata, propname, propvalue, 0);
}

static int start_ffmpeg_impl(FFMpegContext *context, struct RenderData *rd, int rectx, int recty, const char *suffix, ReportList *reports)
{
	/* Handle to the output file */
	AVFormatContext *of;
	AVOutputFormat *fmt;
	AVDictionary *opts = NULL;
	char name[FILE_MAX], error[1024];
	const char **exts;

	context->ffmpeg_type = rd->ffcodecdata.type;
	context->ffmpeg_codec = rd->ffcodecdata.codec;
	context->ffmpeg_audio_codec = rd->ffcodecdata.audio_codec;
	context->ffmpeg_video_bitrate = rd->ffcodecdata.video_bitrate;
	context->ffmpeg_audio_bitrate = rd->ffcodecdata.audio_bitrate;
	context->ffmpeg_gop_size = rd->ffcodecdata.gop_size;
	context->ffmpeg_autosplit = rd->ffcodecdata.flags & FFMPEG_AUTOSPLIT_OUTPUT;
	context->ffmpeg_crf = rd->ffcodecdata.constant_rate_factor;
	context->ffmpeg_preset = rd->ffcodecdata.ffmpeg_preset;

	if ((rd->ffcodecdata.flags & FFMPEG_USE_MAX_B_FRAMES) != 0) {
		context->ffmpeg_max_b_frames = rd->ffcodecdata.max_b_frames;
	}

	/* Determine the correct filename */
	ffmpeg_filepath_get(context, name, rd, context->ffmpeg_preview, suffix);
	PRINT("Starting output to %s(ffmpeg)...\n"
	        "  Using type=%d, codec=%d, audio_codec=%d,\n"
	        "  video_bitrate=%d, audio_bitrate=%d,\n"
	        "  gop_size=%d, autosplit=%d\n"
	        "  render width=%d, render height=%d\n",
	        name, context->ffmpeg_type, context->ffmpeg_codec, context->ffmpeg_audio_codec,
	        context->ffmpeg_video_bitrate, context->ffmpeg_audio_bitrate,
	        context->ffmpeg_gop_size, context->ffmpeg_autosplit, rectx, recty);

	exts = get_file_extensions(context->ffmpeg_type);
	if (!exts) {
		BKE_report(reports, RPT_ERROR, "No valid formats found");
		return 0;
	}
	fmt = av_guess_format(NULL, exts[0], NULL);
	if (!fmt) {
		BKE_report(reports, RPT_ERROR, "No valid formats found");
		return 0;
	}

	of = avformat_alloc_context();
	if (!of) {
		BKE_report(reports, RPT_ERROR, "Error opening output file");
		return 0;
	}


	/* Returns after this must 'goto fail;' */

	of->oformat = fmt;

	/* Only bother with setting packet size & mux rate when CRF is not used. */
	if (context->ffmpeg_crf == 0) {
		of->packet_size = rd->ffcodecdata.mux_packet_size;
		if (context->ffmpeg_audio_codec != AV_CODEC_ID_NONE) {
			ffmpeg_dict_set_int(&opts, "muxrate", rd->ffcodecdata.mux_rate);
		}
		else {
			av_dict_set(&opts, "muxrate", "0", 0);
		}
	}

	ffmpeg_dict_set_int(&opts, "preload", (int)(0.5 * AV_TIME_BASE));

	of->max_delay = (int)(0.7 * AV_TIME_BASE);

	fmt->audio_codec = context->ffmpeg_audio_codec;

	BLI_strncpy(of->filename, name, sizeof(of->filename));
	/* set the codec to the user's selection */
	switch (context->ffmpeg_type) {
		case FFMPEG_AVI:
		case FFMPEG_MOV:
		case FFMPEG_MKV:
			fmt->video_codec = context->ffmpeg_codec;
			break;
		case FFMPEG_OGG:
			fmt->video_codec = AV_CODEC_ID_THEORA;
			break;
		case FFMPEG_DV:
			fmt->video_codec = AV_CODEC_ID_DVVIDEO;
			break;
		case FFMPEG_MPEG1:
			fmt->video_codec = AV_CODEC_ID_MPEG1VIDEO;
			break;
		case FFMPEG_MPEG2:
			fmt->video_codec = AV_CODEC_ID_MPEG2VIDEO;
			break;
		case FFMPEG_H264:
			fmt->video_codec = AV_CODEC_ID_H264;
			break;
		case FFMPEG_XVID:
			fmt->video_codec = AV_CODEC_ID_MPEG4;
			break;
		case FFMPEG_FLV:
			fmt->video_codec = AV_CODEC_ID_FLV1;
			break;
		case FFMPEG_MPEG4:
		default:
			fmt->video_codec = context->ffmpeg_codec;
			break;
	}
	if (fmt->video_codec == AV_CODEC_ID_DVVIDEO) {
		if (rectx != 720) {
			BKE_report(reports, RPT_ERROR, "Render width has to be 720 pixels for DV!");
			goto fail;
		}
		if (rd->frs_sec != 25 && recty != 480) {
			BKE_report(reports, RPT_ERROR, "Render height has to be 480 pixels for DV-NTSC!");
			goto fail;
		}
		if (rd->frs_sec == 25 && recty != 576) {
			BKE_report(reports, RPT_ERROR, "Render height has to be 576 pixels for DV-PAL!");
			goto fail;
		}
	}

	if (context->ffmpeg_type == FFMPEG_DV) {
		fmt->audio_codec = AV_CODEC_ID_PCM_S16LE;
		if (context->ffmpeg_audio_codec != AV_CODEC_ID_NONE && rd->ffcodecdata.audio_mixrate != 48000 && rd->ffcodecdata.audio_channels != 2) {
			BKE_report(reports, RPT_ERROR, "FFMPEG only supports 48khz / stereo audio for DV!");
			goto fail;
		}
	}

	if (fmt->video_codec != AV_CODEC_ID_NONE) {
		context->video_stream = alloc_video_stream(context, rd, fmt->video_codec, of, rectx, recty, error, sizeof(error));
		PRINT("alloc video stream %p\n", context->video_stream);
		if (!context->video_stream) {
			if (error[0])
				BKE_report(reports, RPT_ERROR, error);
			else
				BKE_report(reports, RPT_ERROR, "Error initializing video stream");
			goto fail;
		}
	}

	if (context->ffmpeg_audio_codec != AV_CODEC_ID_NONE) {
		context->audio_stream = alloc_audio_stream(context, rd, fmt->audio_codec, of, error, sizeof(error));
		if (!context->audio_stream) {
			if (error[0])
				BKE_report(reports, RPT_ERROR, error);
			else
				BKE_report(reports, RPT_ERROR, "Error initializing audio stream");
			goto fail;
		}
	}
	if (!(fmt->flags & AVFMT_NOFILE)) {
		if (avio_open(&of->pb, name, AVIO_FLAG_WRITE) < 0) {
			BKE_report(reports, RPT_ERROR, "Could not open file for writing");
			goto fail;
		}
	}

	if (context->stamp_data != NULL) {
		BKE_stamp_info_callback(&of->metadata, context->stamp_data, ffmpeg_add_metadata_callback, false);
	}

	if (avformat_write_header(of, NULL) < 0) {
		BKE_report(reports, RPT_ERROR, "Could not initialize streams, probably unsupported codec combination");
		goto fail;
	}

	context->outfile = of;
	av_dump_format(of, 0, name, 1);
	av_dict_free(&opts);

	return 1;


fail:
	if (of->pb) {
		avio_close(of->pb);
	}

	if (context->video_stream && context->video_stream->codec) {
		avcodec_close(context->video_stream->codec);
		context->video_stream = NULL;
	}

	if (context->audio_stream && context->audio_stream->codec) {
		avcodec_close(context->audio_stream->codec);
		context->audio_stream = NULL;
	}

	av_dict_free(&opts);
	avformat_free_context(of);
	return 0;
}

/**
 * Writes any delayed frames in the encoder. This function is called before
 * closing the encoder.
 *
 * <p>
 * Since an encoder may use both past and future frames to predict
 * inter-frames (H.264 B-frames, for example), it can output the frames
 * in a different order from the one it was given.
 * For example, when sending frames 1, 2, 3, 4 to the encoder, it may write
 * them in the order 1, 4, 2, 3 - first the two frames used for prediction,
 * and then the bidirectionally-predicted frames. What this means in practice
 * is that the encoder may not immediately produce one output frame for each
 * input frame. These delayed frames must be flushed before we close the
 * stream. We do this by calling avcodec_encode_video with NULL for the last
 * parameter.
 * </p>
 */
static void flush_ffmpeg(FFMpegContext *context)
{
	int ret = 0;

	AVCodecContext *c = context->video_stream->codec;
	/* get the delayed frames */
	while (1) {
		int got_output;
		AVPacket packet = { 0 };
		av_init_packet(&packet);

		ret = avcodec_encode_video2(c, &packet, NULL, &got_output);
		if (ret < 0) {
			fprintf(stderr, "Error encoding delayed frame %d\n", ret);
			break;
		}
		if (!got_output) {
			break;
		}
		if (packet.pts != AV_NOPTS_VALUE) {
			packet.pts = av_rescale_q(packet.pts, c->time_base, context->video_stream->time_base);
			PRINT("Video Frame PTS: %d\n", (int) packet.pts);
		}
		else {
			PRINT("Video Frame PTS: not set\n");
		}
		if (packet.dts != AV_NOPTS_VALUE) {
			packet.dts = av_rescale_q(packet.dts, c->time_base, context->video_stream->time_base);
			PRINT("Video Frame DTS: %d\n", (int) packet.dts);
		}
		else {
			PRINT("Video Frame DTS: not set\n");
		}

		packet.stream_index = context->video_stream->index;
		ret = av_interleaved_write_frame(context->outfile, &packet);
		if (ret != 0) {
			fprintf(stderr, "Error writing delayed frame %d\n", ret);
			break;
		}
	}
	avcodec_flush_buffers(context->video_stream->codec);
}

/* **********************************************************************
 * * public interface
 * ********************************************************************** */

/* Get the output filename-- similar to the other output formats */
static void ffmpeg_filepath_get(FFMpegContext *context, char *string, RenderData *rd, bool preview, const char *suffix)
{
	char autosplit[20];

	const char **exts = get_file_extensions(rd->ffcodecdata.type);
	const char **fe = exts;
	int sfra, efra;

	if (!string || !exts) return;

	if (preview) {
		sfra = rd->psfra;
		efra = rd->pefra;
	}
	else {
		sfra = rd->sfra;
		efra = rd->efra;
	}

	strcpy(string, rd->pic);
	BLI_path_abs(string, BKE_main_blendfile_path_from_global());

	BLI_make_existing_file(string);

	autosplit[0] = '\0';

	if ((rd->ffcodecdata.flags & FFMPEG_AUTOSPLIT_OUTPUT) != 0) {
		if (context) {
			sprintf(autosplit, "_%03d", context->ffmpeg_autosplit_count);
		}
	}

	if (rd->scemode & R_EXTENSION) {
		while (*fe) {
			if (BLI_strcasecmp(string + strlen(string) - strlen(*fe), *fe) == 0) {
				break;
			}
			fe++;
		}

		if (*fe == NULL) {
			strcat(string, autosplit);

			BLI_path_frame_range(string, sfra, efra, 4);
			strcat(string, *exts);
		}
		else {
			*(string + strlen(string) - strlen(*fe)) = '\0';
			strcat(string, autosplit);
			strcat(string, *fe);
		}
	}
	else {
		if (BLI_path_frame_check_chars(string)) {
			BLI_path_frame_range(string, sfra, efra, 4);
		}

		strcat(string, autosplit);
	}

	BLI_path_suffix(string, FILE_MAX, suffix, "");
}

void BKE_ffmpeg_filepath_get(char *string, RenderData *rd, bool preview, const char *suffix)
{
	ffmpeg_filepath_get(NULL, string, rd, preview, suffix);
}

int BKE_ffmpeg_start(void *context_v, struct Scene *scene, RenderData *rd, int rectx, int recty,
                     ReportList *reports, bool preview, const char *suffix)
{
	int success;
	FFMpegContext *context = context_v;

	context->ffmpeg_autosplit_count = 0;
	context->ffmpeg_preview = preview;
	context->stamp_data = BKE_stamp_info_from_scene_static(scene);

	success = start_ffmpeg_impl(context, rd, rectx, recty, suffix, reports);
#ifdef WITH_AUDASPACE
	if (context->audio_stream) {
		AVCodecContext *c = context->audio_stream->codec;
		AUD_DeviceSpecs specs;
		specs.channels = c->channels;

		switch (av_get_packed_sample_fmt(c->sample_fmt)) {
			case AV_SAMPLE_FMT_U8:
				specs.format = AUD_FORMAT_U8;
				break;
			case AV_SAMPLE_FMT_S16:
				specs.format = AUD_FORMAT_S16;
				break;
			case AV_SAMPLE_FMT_S32:
				specs.format = AUD_FORMAT_S32;
				break;
			case AV_SAMPLE_FMT_FLT:
				specs.format = AUD_FORMAT_FLOAT32;
				break;
			case AV_SAMPLE_FMT_DBL:
				specs.format = AUD_FORMAT_FLOAT64;
				break;
			default:
				return -31415;
		}

		specs.rate = rd->ffcodecdata.audio_mixrate;
		context->audio_mixdown_device = BKE_sound_mixdown(scene, specs, preview ? rd->psfra : rd->sfra, rd->ffcodecdata.audio_volume);
#ifdef FFMPEG_CODEC_TIME_BASE
		c->time_base.den = specs.rate;
		c->time_base.num = 1;
#endif
	}
#endif
	return success;
}

static void end_ffmpeg_impl(FFMpegContext *context, int is_autosplit);

#ifdef WITH_AUDASPACE
static void write_audio_frames(FFMpegContext *context, double to_pts)
{
	int finished = 0;

	while (context->audio_stream && !finished) {
		if ((context->audio_time >= to_pts) ||
		    (write_audio_frame(context)))
		{
			finished = 1;
		}
	}
}
#endif

int BKE_ffmpeg_append(void *context_v, RenderData *rd, int start_frame, int frame, int *pixels,
                      int rectx, int recty, const char *suffix, ReportList *reports)
{
	FFMpegContext *context = context_v;
	AVFrame *avframe;
	int success = 1;

	PRINT("Writing frame %i, render width=%d, render height=%d\n", frame, rectx, recty);

/* why is this done before writing the video frame and again at end_ffmpeg? */
//	write_audio_frames(frame / (((double)rd->frs_sec) / rd->frs_sec_base));

	if (context->video_stream) {
		avframe = generate_video_frame(context, (unsigned char *) pixels, reports);
		success = (avframe && write_video_frame(context, rd, frame - start_frame, avframe, reports));

		if (context->ffmpeg_autosplit) {
			if (avio_tell(context->outfile->pb) > FFMPEG_AUTOSPLIT_SIZE) {
				end_ffmpeg_impl(context, true);
				context->ffmpeg_autosplit_count++;
				success &= start_ffmpeg_impl(context, rd, rectx, recty, suffix, reports);
			}
		}
	}

#ifdef WITH_AUDASPACE
	write_audio_frames(context, (frame - start_frame) / (((double)rd->frs_sec) / (double)rd->frs_sec_base));
#endif
	return success;
}

static void end_ffmpeg_impl(FFMpegContext *context, int is_autosplit)
{
	PRINT("Closing ffmpeg...\n");

#if 0
	if (context->audio_stream) { /* SEE UPPER */
		write_audio_frames(context);
	}
#endif

#ifdef WITH_AUDASPACE
	if (is_autosplit == false) {
		if (context->audio_mixdown_device) {
			AUD_Device_free(context->audio_mixdown_device);
			context->audio_mixdown_device = NULL;
		}
	}
#endif

	if (context->video_stream && context->video_stream->codec) {
		PRINT("Flushing delayed frames...\n");
		flush_ffmpeg(context);
	}

	if (context->outfile) {
		av_write_trailer(context->outfile);
	}

	/* Close the video codec */

	if (context->video_stream != NULL && context->video_stream->codec != NULL) {
		avcodec_close(context->video_stream->codec);
		PRINT("zero video stream %p\n", context->video_stream);
		context->video_stream = NULL;
	}

	if (context->audio_stream != NULL && context->audio_stream->codec != NULL) {
		avcodec_close(context->audio_stream->codec);
		context->audio_stream = NULL;
	}

	/* free the temp buffer */
	if (context->current_frame != NULL) {
		delete_picture(context->current_frame);
		context->current_frame = NULL;
	}
	if (context->outfile != NULL && context->outfile->oformat) {
		if (!(context->outfile->oformat->flags & AVFMT_NOFILE)) {
			avio_close(context->outfile->pb);
		}
	}
	if (context->outfile != NULL) {
		avformat_free_context(context->outfile);
		context->outfile = NULL;
	}
	if (context->audio_input_buffer != NULL) {
		av_free(context->audio_input_buffer);
		context->audio_input_buffer = NULL;
	}
#ifndef FFMPEG_HAVE_ENCODE_AUDIO2
	if (context->audio_output_buffer != NULL) {
		av_free(context->audio_output_buffer);
		context->audio_output_buffer = NULL;
	}
#endif

	if (context->audio_deinterleave_buffer != NULL) {
		av_free(context->audio_deinterleave_buffer);
		context->audio_deinterleave_buffer = NULL;
	}

	if (context->img_convert_ctx != NULL) {
		sws_freeContext(context->img_convert_ctx);
		context->img_convert_ctx = NULL;
	}
}

void BKE_ffmpeg_end(void *context_v)
{
	FFMpegContext *context = context_v;
	end_ffmpeg_impl(context, false);
}

/* properties */

void BKE_ffmpeg_property_del(RenderData *rd, void *type, void *prop_)
{
	struct IDProperty *prop = (struct IDProperty *) prop_;
	IDProperty *group;

	if (!rd->ffcodecdata.properties) {
		return;
	}

	group = IDP_GetPropertyFromGroup(rd->ffcodecdata.properties, type);
	if (group && prop) {
		IDP_FreeFromGroup(group, prop);
	}
}

static IDProperty *BKE_ffmpeg_property_add(RenderData *rd, const char *type, const AVOption *o, const AVOption *parent)
{
	AVCodecContext c;
	IDProperty *group;
	IDProperty *prop;
	IDPropertyTemplate val;
	int idp_type;
	char name[256];

	val.i = 0;

	avcodec_get_context_defaults3(&c, NULL);

	if (!rd->ffcodecdata.properties) {
		rd->ffcodecdata.properties = IDP_New(IDP_GROUP, &val, "ffmpeg");
	}

	group = IDP_GetPropertyFromGroup(rd->ffcodecdata.properties, type);

	if (!group) {
		group = IDP_New(IDP_GROUP, &val, type);
		IDP_AddToGroup(rd->ffcodecdata.properties, group);
	}

	if (parent) {
		BLI_snprintf(name, sizeof(name), "%s:%s", parent->name, o->name);
	}
	else {
		BLI_strncpy(name, o->name, sizeof(name));
	}

	PRINT("ffmpeg_property_add: %s %s\n", type, name);

	prop = IDP_GetPropertyFromGroup(group, name);
	if (prop) {
		return prop;
	}

	switch (o->type) {
		case AV_OPT_TYPE_INT:
		case AV_OPT_TYPE_INT64:
			val.i = FFMPEG_DEF_OPT_VAL_INT(o);
			idp_type = IDP_INT;
			break;
		case AV_OPT_TYPE_DOUBLE:
		case AV_OPT_TYPE_FLOAT:
			val.f = FFMPEG_DEF_OPT_VAL_DOUBLE(o);
			idp_type = IDP_FLOAT;
			break;
		case AV_OPT_TYPE_STRING:
			val.string.str = (char *)"                                                                               ";
			val.string.len = 80;
/*		val.str = (char *)"                                                                               ";*/
			idp_type = IDP_STRING;
			break;
		case AV_OPT_TYPE_CONST:
			val.i = 1;
			idp_type = IDP_INT;
			break;
		default:
			return NULL;
	}
	prop = IDP_New(idp_type, &val, name);
	IDP_AddToGroup(group, prop);
	return prop;
}

/* not all versions of ffmpeg include that, so here we go ... */

int BKE_ffmpeg_property_add_string(RenderData *rd, const char *type, const char *str)
{
	AVCodecContext c;
	const AVOption *o = NULL;
	const AVOption *p = NULL;
	char name_[128];
	char *name;
	char *param;
	IDProperty *prop = NULL;

	avcodec_get_context_defaults3(&c, NULL);

	BLI_strncpy(name_, str, sizeof(name_));

	name = name_;
	while (*name == ' ') name++;

	param = strchr(name, ':');

	if (!param) {
		param = strchr(name, ' ');
	}
	if (param) {
		*param++ = '\0';
		while (*param == ' ') param++;
	}

	o = av_opt_find(&c, name, NULL, 0, AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ);
	if (!o) {
		PRINT("Ignoring unknown expert option %s\n", str);
		return 0;
	}
	if (param && o->type == AV_OPT_TYPE_CONST) {
		return 0;
	}
	if (param && o->type != AV_OPT_TYPE_CONST && o->unit) {
		p = av_opt_find(&c, param, o->unit, 0, AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ);
		if (p) {
			prop = BKE_ffmpeg_property_add(rd, (char *) type, p, o);
		}
		else {
			PRINT("Ignoring unknown expert option %s\n", str);
		}
	}
	else {
		prop = BKE_ffmpeg_property_add(rd, (char *) type, o, NULL);
	}


	if (!prop) {
		return 0;
	}

	if (param && !p) {
		switch (prop->type) {
			case IDP_INT:
				IDP_Int(prop) = atoi(param);
				break;
			case IDP_FLOAT:
				IDP_Float(prop) = atof(param);
				break;
			case IDP_STRING:
				strncpy(IDP_String(prop), param, prop->len);
				break;
		}
	}
	return 1;
}

static void ffmpeg_set_expert_options(RenderData *rd)
{
	int codec_id = rd->ffcodecdata.codec;

	if (rd->ffcodecdata.properties)
		IDP_FreeProperty(rd->ffcodecdata.properties);

	if (codec_id == AV_CODEC_ID_H264) {
		/*
		 * All options here are for x264, but must be set via ffmpeg.
		 * The names are therefore different - Search for "x264 to FFmpeg option mapping"
		 * to get a list.
		 */

		/*
		 * Use CABAC coder. Using "coder:1", which should be equivalent,
		 * crashes Blender for some reason. Either way - this is no big deal.
		 */
		BKE_ffmpeg_property_add_string(rd, "video", "coder:vlc");

		/*
		 * The other options were taken from the libx264-default.preset
		 * included in the ffmpeg distribution.
		 */
//		ffmpeg_property_add_string(rd, "video", "flags:loop"); // this breaks compatibility for QT
		BKE_ffmpeg_property_add_string(rd, "video", "cmp:chroma");
		BKE_ffmpeg_property_add_string(rd, "video", "partitions:parti4x4");  // Deprecated.
		BKE_ffmpeg_property_add_string(rd, "video", "partitions:partp8x8");  // Deprecated.
		BKE_ffmpeg_property_add_string(rd, "video", "partitions:partb8x8");  // Deprecated.
		BKE_ffmpeg_property_add_string(rd, "video", "me:hex");
		BKE_ffmpeg_property_add_string(rd, "video", "subq:6");
		BKE_ffmpeg_property_add_string(rd, "video", "me_range:16");
		BKE_ffmpeg_property_add_string(rd, "video", "qdiff:4");
		BKE_ffmpeg_property_add_string(rd, "video", "keyint_min:25");
		BKE_ffmpeg_property_add_string(rd, "video", "sc_threshold:40");
		BKE_ffmpeg_property_add_string(rd, "video", "i_qfactor:0.71");
		BKE_ffmpeg_property_add_string(rd, "video", "b_strategy:1");
		BKE_ffmpeg_property_add_string(rd, "video", "bf:3");
		BKE_ffmpeg_property_add_string(rd, "video", "refs:2");
		BKE_ffmpeg_property_add_string(rd, "video", "qcomp:0.6");

		BKE_ffmpeg_property_add_string(rd, "video", "trellis:0");
		BKE_ffmpeg_property_add_string(rd, "video", "weightb:1");
#ifdef FFMPEG_HAVE_DEPRECATED_FLAGS2
		BKE_ffmpeg_property_add_string(rd, "video", "flags2:dct8x8");
		BKE_ffmpeg_property_add_string(rd, "video", "directpred:3");
		BKE_ffmpeg_property_add_string(rd, "video", "flags2:fastpskip");
		BKE_ffmpeg_property_add_string(rd, "video", "flags2:wpred");
#else
		BKE_ffmpeg_property_add_string(rd, "video", "8x8dct:1");
		BKE_ffmpeg_property_add_string(rd, "video", "fast-pskip:1");
		BKE_ffmpeg_property_add_string(rd, "video", "wpredp:2");
#endif
	}
	else if (codec_id == AV_CODEC_ID_DNXHD) {
		if (rd->ffcodecdata.flags & FFMPEG_LOSSLESS_OUTPUT)
			BKE_ffmpeg_property_add_string(rd, "video", "mbd:rd");
	}
}

void BKE_ffmpeg_preset_set(RenderData *rd, int preset)
{
	int isntsc = (rd->frs_sec != 25);

	if (rd->ffcodecdata.properties)
		IDP_FreeProperty(rd->ffcodecdata.properties);

	switch (preset) {
		case FFMPEG_PRESET_VCD:
			rd->ffcodecdata.type = FFMPEG_MPEG1;
			rd->ffcodecdata.video_bitrate = 1150;
			rd->xsch = 352;
			rd->ysch = isntsc ? 240 : 288;
			rd->ffcodecdata.gop_size = isntsc ? 18 : 15;
			rd->ffcodecdata.rc_max_rate = 1150;
			rd->ffcodecdata.rc_min_rate = 1150;
			rd->ffcodecdata.rc_buffer_size = 40 * 8;
			rd->ffcodecdata.mux_packet_size = 2324;
			rd->ffcodecdata.mux_rate = 2352 * 75 * 8;
			break;

		case FFMPEG_PRESET_SVCD:
			rd->ffcodecdata.type = FFMPEG_MPEG2;
			rd->ffcodecdata.video_bitrate = 2040;
			rd->xsch = 480;
			rd->ysch = isntsc ? 480 : 576;
			rd->ffcodecdata.gop_size = isntsc ? 18 : 15;
			rd->ffcodecdata.rc_max_rate = 2516;
			rd->ffcodecdata.rc_min_rate = 0;
			rd->ffcodecdata.rc_buffer_size = 224 * 8;
			rd->ffcodecdata.mux_packet_size = 2324;
			rd->ffcodecdata.mux_rate = 0;
			break;

		case FFMPEG_PRESET_DVD:
			rd->ffcodecdata.type = FFMPEG_MPEG2;
			rd->ffcodecdata.video_bitrate = 6000;

			/* Don't set resolution, see [#21351]
			 * rd->xsch = 720;
			 * rd->ysch = isntsc ? 480 : 576; */

			rd->ffcodecdata.gop_size = isntsc ? 18 : 15;
			rd->ffcodecdata.rc_max_rate = 9000;
			rd->ffcodecdata.rc_min_rate = 0;
			rd->ffcodecdata.rc_buffer_size = 224 * 8;
			rd->ffcodecdata.mux_packet_size = 2048;
			rd->ffcodecdata.mux_rate = 10080000;
			break;

		case FFMPEG_PRESET_DV:
			rd->ffcodecdata.type = FFMPEG_DV;
			rd->xsch = 720;
			rd->ysch = isntsc ? 480 : 576;
			break;

		case FFMPEG_PRESET_H264:
			rd->ffcodecdata.type = FFMPEG_AVI;
			rd->ffcodecdata.codec = AV_CODEC_ID_H264;
			rd->ffcodecdata.video_bitrate = 6000;
			rd->ffcodecdata.gop_size = isntsc ? 18 : 15;
			rd->ffcodecdata.rc_max_rate = 9000;
			rd->ffcodecdata.rc_min_rate = 0;
			rd->ffcodecdata.rc_buffer_size = 224 * 8;
			rd->ffcodecdata.mux_packet_size = 2048;
			rd->ffcodecdata.mux_rate = 10080000;

			break;

		case FFMPEG_PRESET_THEORA:
		case FFMPEG_PRESET_XVID:
			if (preset == FFMPEG_PRESET_XVID) {
				rd->ffcodecdata.type = FFMPEG_AVI;
				rd->ffcodecdata.codec = AV_CODEC_ID_MPEG4;
			}
			else if (preset == FFMPEG_PRESET_THEORA) {
				rd->ffcodecdata.type = FFMPEG_OGG; // XXX broken
				rd->ffcodecdata.codec = AV_CODEC_ID_THEORA;
			}

			rd->ffcodecdata.video_bitrate = 6000;
			rd->ffcodecdata.gop_size = isntsc ? 18 : 15;
			rd->ffcodecdata.rc_max_rate = 9000;
			rd->ffcodecdata.rc_min_rate = 0;
			rd->ffcodecdata.rc_buffer_size = 224 * 8;
			rd->ffcodecdata.mux_packet_size = 2048;
			rd->ffcodecdata.mux_rate = 10080000;
			break;

	}

	ffmpeg_set_expert_options(rd);
}

void BKE_ffmpeg_image_type_verify(RenderData *rd, ImageFormatData *imf)
{
	int audio = 0;

	if (imf->imtype == R_IMF_IMTYPE_FFMPEG) {
		if (rd->ffcodecdata.type <= 0 ||
		    rd->ffcodecdata.codec <= 0 ||
		    rd->ffcodecdata.audio_codec <= 0 ||
		    rd->ffcodecdata.video_bitrate <= 1)
		{
			BKE_ffmpeg_preset_set(rd, FFMPEG_PRESET_H264);
			rd->ffcodecdata.constant_rate_factor = FFM_CRF_MEDIUM;
			rd->ffcodecdata.ffmpeg_preset = FFM_PRESET_GOOD;
			rd->ffcodecdata.type = FFMPEG_MKV;
		}
		if (rd->ffcodecdata.type == FFMPEG_OGG) {
			rd->ffcodecdata.type = FFMPEG_MPEG2;
		}

		audio = 1;
	}
	else if (imf->imtype == R_IMF_IMTYPE_H264) {
		if (rd->ffcodecdata.codec != AV_CODEC_ID_H264) {
			BKE_ffmpeg_preset_set(rd, FFMPEG_PRESET_H264);
			audio = 1;
		}
	}
	else if (imf->imtype == R_IMF_IMTYPE_XVID) {
		if (rd->ffcodecdata.codec != AV_CODEC_ID_MPEG4) {
			BKE_ffmpeg_preset_set(rd, FFMPEG_PRESET_XVID);
			audio = 1;
		}
	}
	else if (imf->imtype == R_IMF_IMTYPE_THEORA) {
		if (rd->ffcodecdata.codec != AV_CODEC_ID_THEORA) {
			BKE_ffmpeg_preset_set(rd, FFMPEG_PRESET_THEORA);
			audio = 1;
		}
	}

	if (audio && rd->ffcodecdata.audio_codec < 0) {
		rd->ffcodecdata.audio_codec = AV_CODEC_ID_NONE;
		rd->ffcodecdata.audio_bitrate = 128;
	}
}

void BKE_ffmpeg_codec_settings_verify(RenderData *rd)
{
	ffmpeg_set_expert_options(rd);
}

bool BKE_ffmpeg_alpha_channel_is_supported(RenderData *rd)
{
	int codec = rd->ffcodecdata.codec;

	if (codec == AV_CODEC_ID_QTRLE)
		return true;

	if (codec == AV_CODEC_ID_PNG)
		return true;

	if (codec == AV_CODEC_ID_HUFFYUV)
		return true;

#ifdef FFMPEG_FFV1_ALPHA_SUPPORTED
	if (codec == AV_CODEC_ID_FFV1)
		return true;
#endif

	return false;
}

void *BKE_ffmpeg_context_create(void)
{
	FFMpegContext *context;

	/* new ffmpeg data struct */
	context = MEM_callocN(sizeof(FFMpegContext), "new ffmpeg context");

	context->ffmpeg_codec = AV_CODEC_ID_MPEG4;
	context->ffmpeg_audio_codec = AV_CODEC_ID_NONE;
	context->ffmpeg_video_bitrate = 1150;
	context->ffmpeg_audio_bitrate = 128;
	context->ffmpeg_gop_size = 12;
	context->ffmpeg_autosplit = 0;
	context->ffmpeg_autosplit_count = 0;
	context->ffmpeg_preview = false;
	context->stamp_data = NULL;

	return context;
}

void BKE_ffmpeg_context_free(void *context_v)
{
	FFMpegContext *context = context_v;
	if (context == NULL) {
		return;
	}
	if (context->stamp_data) {
		MEM_freeN(context->stamp_data);
	}
	MEM_freeN(context);
}

#endif /* WITH_FFMPEG */