VSE importing sound is one frame longer than video #47135

New Issue

Douglas E Knapp · 2016-01-07T17:51:28+01:00

Douglas E Knapp commented

2016-01-07 17:51:28 +01:00

Sabayon KDE fully updated
Nvidia GTX 580

Blender 2,76b

VSE importing sound is one frame longer than video

Add a movie in the VSE

music is 133 frames
Video is 132 frames

VLC movie info

Stream 0
Type video
Codec H264 - MPEG-4 AVC(part 10)(avc1)
Resolution 1440 x1090
Display resolution 1440x1080
Frame Rate:25
Decode Format: Planar 4:2:0 YUV

Stream 1
type: audio
Codec MPEG AAC Audio (mp4a)
Channels Stereo
Sample Rate 48000 Hz
Bits Per sample :32

MAH05658.MP4

VSE Error.blend

Sabayon KDE fully updated Nvidia GTX 580 Blender 2,76b VSE importing sound is one frame longer than video Add a movie in the VSE music is 133 frames Video is 132 frames VLC movie info Stream 0 Type video Codec H264 - MPEG-4 AVC(part 10)(avc1) Resolution 1440 x1090 Display resolution 1440x1080 Frame Rate:25 Decode Format: Planar 4:2:0 YUV Stream 1 type: audio Codec MPEG AAC Audio (mp4a) Channels Stereo Sample Rate 48000 Hz Bits Per sample :32 MAH05658.MP4 [MAH05658.MP4](https://archive.blender.org/developer/F271924/MAH05658.MP4) [VSE Error.blend](https://archive.blender.org/developer/F271925/VSE_Error.blend)

Douglas E Knapp commented

2016-01-07 17:51:28 +01:00

Changed status to: 'Open'

Douglas E Knapp commented

2016-01-07 17:51:28 +01:00

Added subscriber: @DouglasEKnapp

David Salvo commented

2016-01-08 02:02:04 +01:00

Added subscriber: @slinkeepie

David Salvo commented

2016-01-08 02:02:04 +01:00

Confirmed with nightly build 7e6d096, Mint 17.3, NVIDIA G92 [GeForce 9800 GT].
According to mediainfo, video length is 5s 280ms, which is exactly 125 + 7 = 132 frames, which is what loads in blender.
It also says the audio is 5s 269ms, so it shouldn't even be rounding up the extra frame really...

Confirmed with nightly build 7e6d096, Mint 17.3, NVIDIA G92 [GeForce 9800 GT]. According to mediainfo, video length is 5s 280ms, which is exactly 125 + 7 = 132 frames, which is what loads in blender. It also says the audio is 5s 269ms, so it shouldn't even be rounding up the extra frame really...

Bastien Montagne commented

2016-01-08 09:24:50 +01:00

Added subscriber: @mont29

Bastien Montagne commented

2016-01-08 09:24:50 +01:00

Yeah… if you enable waveform you'll see audio actually ends before end of last frame (as reported by mediainfo & co).

What happens here is that audaspace returns the exact length of the video (not the audio) - 132 frames - but blender ceil() it (because when importing pure audio, there's no guarantee strip is exactly n frames long)… and ceil(132) = 133. Will just apply a (very small) offset here, so that we get ceil(131.999999999999) = 132

Yeah… if you enable waveform you'll see audio actually ends before end of last frame (as reported by mediainfo & co). What happens here is that audaspace returns the exact length of the video (not the audio) - 132 frames - but blender ceil() it (because when importing pure audio, there's no guarantee strip is exactly n frames long)… and `ceil(132) = 133`. Will just apply a (very small) offset here, so that we get `ceil(131.999999999999) = 132`

Bastien Montagne self-assigned this 2016-01-08 09:25:03 +01:00

blender-admin commented

2016-01-08 09:41:08 +01:00

This issue was referenced by 15faab0082

This issue was referenced by 15faab0082d6de6ba1bb0787798f66f69a53dabe

Bastien Montagne commented

2016-01-08 09:41:45 +01:00

Changed status from 'Open' to: 'Resolved'

Bastien Montagne closed this issue

2016-01-08 09:41:45 +01:00

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VSE importing sound is one frame longer than video #47135