VSE: importing multiple movie clips with a lower framerate than the project causes the audio to be placed alternating above and below movie strips. #65046

New Issue

hudson barkley · 2019-05-24T02:10:37+02:00

hudson barkley commented

2019-05-24 02:10:37 +02:00

System Information
Operating system: Windows 8.1

Blender Version
Broken: 2.8, 2019-05-23
Worked: (optional)

Short description of error
When importing movie strips (that have audio and video components) that are of a lower framerate than the current project framerate, Blender doesnt know what to do with the audio track positions, it alternates between putting them above and below the strips.

The previous behavior was to place both rows of audio strips above the video in alternating rows.
Ideally, it should now place all audio strips on alternating rows below the video strips.

Exact steps for others to reproduce the error
Set the project framerate to something higher than some videos you have (say 30fps with 29.97fps videos)
Import multiple videos using the add movie option

**System Information** Operating system: Windows 8.1 **Blender Version** Broken: 2.8, 2019-05-23 Worked: (optional) **Short description of error** When importing movie strips (that have audio and video components) that are of a lower framerate than the current project framerate, Blender doesnt know what to do with the audio track positions, it alternates between putting them above and below the strips. ![what.jpg](https://archive.blender.org/developer/F7064156/what.jpg) The previous behavior was to place both rows of audio strips above the video in alternating rows. Ideally, it should now place all audio strips on alternating rows below the video strips. **Exact steps for others to reproduce the error** Set the project framerate to something higher than some videos you have (say 30fps with 29.97fps videos) Import multiple videos using the add movie option

hudson barkley commented

2019-05-24 02:10:37 +02:00

Added subscriber: @snuq

blender-admin commented

2019-05-24 02:10:37 +02:00

blender/blender-addons#64964 was marked as duplicate of this issue

George Vogiatzis commented

2019-05-24 07:05:17 +02:00

Added subscribers: @iss, @Gvgeo-1

George Vogiatzis commented

2019-05-24 07:05:17 +02:00

@iss Feature request or bug?

Richard Antalik commented

2019-05-24 12:26:57 +02:00

In #65046#686634, @Gvgeo-1 wrote:
@iss Feature request or bug?

Bug request :P

There is no reason to make this pattern in first place.
Fixing this will require rewrite of half of sequencer logic, so this will take some time.

> In #65046#686634, @Gvgeo-1 wrote: > @iss Feature request or bug? Bug request :P There is no reason to make this pattern in first place. Fixing this will require rewrite of half of sequencer logic, so this will take some time.

tintwotin commented

2019-05-25 20:21:12 +02:00

Added subscriber: @tintwotin

tintwotin commented

2019-05-25 20:21:12 +02:00

This problem and also this #64579 in many ways, relates to the current workspace of the Sequencer, because it has introduced a filebrowser, but where the Menu > Add > Movie/Sound/Image opened file browser had import settings, the current Sequencer filebrowser has none.

So people have no way seeing and of using ex. the "Use Movie Framerate" setting and apparently people also have a hard time finding the "Set render size" in the strip menu.

Though there might be some precision problems in the duration calculations of A/V import, there are actually tools built-in in Blender which will improve in the situation of a mis-match between the meta-data of the source material and the current project settings, but they are not exposed.

Adding the import settings to the default file browser in the Sequencer workspace is something which can't be done in Python, so it is something I can't solve myself. I tried to raise awareness about the problem months ago: https://devtalk.blender.org/t/blender-ui-paper-cuts/2596/94 but unsucessfully.

In the current UI freeze situation, I don't know if the un-exposed import settings in the Sequencer filebrowser is considered an enhancement, which needs to wait for 2.81, however if ex. the import settings of .obj or .fbx where missing in the UI, I guess it would be considered a bug?

The simplest possible implementation, I can think of, would be to let the filter type settings determine if Movie/Image/Sound should be visible in the panel. And change the default workspace, so Movie/Image/Sound types are on in the file-filter mode, and the panel is visible - meaning a larger file browser area.

A suggestion of how the default Sequencer workspace could look, with the import settings and maybe the "Set Render Size" added to the import options too:

This problem and also this [#64579 ](https://developer.blender.org/T64579) in many ways, relates to the current workspace of the Sequencer, because it has introduced a filebrowser, but where the Menu > Add > Movie/Sound/Image opened file browser had import settings, the current Sequencer filebrowser has none. So people have no way seeing and of using ex. the "Use Movie Framerate" setting and apparently people also have a hard time finding the "Set render size" in the strip menu. Though there might be some precision problems in the duration calculations of A/V import, there are actually tools built-in in Blender which will improve in the situation of a mis-match between the meta-data of the source material and the current project settings, but they are not exposed. Adding the import settings to the default file browser in the Sequencer workspace is something which can't be done in Python, so it is something I can't solve myself. I tried to raise awareness about the problem months ago: https://devtalk.blender.org/t/blender-ui-paper-cuts/2596/94 but unsucessfully. In the current UI freeze situation, I don't know if the un-exposed import settings in the Sequencer filebrowser is considered an enhancement, which needs to wait for 2.81, however if ex. the import settings of .obj or .fbx where missing in the UI, I guess it would be considered a bug? The simplest possible implementation, I can think of, would be to let the filter type settings determine if Movie/Image/Sound should be visible in the panel. And change the default workspace, so Movie/Image/Sound types are on in the file-filter mode, and the panel is visible - meaning a larger file browser area. A suggestion of how the default Sequencer workspace could look, with the import settings and maybe the "Set Render Size" added to the import options too: ![image.png](https://archive.blender.org/developer/F7068355/image.png)

hudson barkley commented

2019-09-17 21:25:45 +02:00

i realize that fixing the above/below behavior is a bit of a big thing, but could we at least fix the issue referenced in https://developer.blender.org/T64964 with a single strip?
It shouldnt be much to fix that, just add an 'if audio imported also, add one to the video channel'... also, adding a check to prevent adding to channel 0 is probably a good idea.

Frankly, I dont see how these are the same issue at all - the other is a simple matter of not taking into account that the newly imported strips are 2 channels high instead of 1, and this one is apparently due to how blender handles strips that are imported to the same location (ie, just moves it up until it has an open channel)

i realize that fixing the above/below behavior is a bit of a big thing, but could we at least fix the issue referenced in https://developer.blender.org/T64964 with a single strip? It shouldnt be much to fix that, just add an 'if audio imported also, add one to the video channel'... also, adding a check to prevent adding to channel 0 is probably a good idea. Frankly, I dont see how these are the same issue at all - the other is a simple matter of not taking into account that the newly imported strips are 2 channels high instead of 1, and this one is apparently due to how blender handles strips that are imported to the same location (ie, just moves it up until it has an open channel)

Richard Antalik commented

2020-01-21 18:24:37 +01:00

Closed as duplicate of #67181

Richard Antalik closed this issue

2020-01-21 18:24:37 +01:00

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VSE: importing multiple movie clips with a lower framerate than the project causes the audio to be placed alternating above and below movie strips. #65046