Clearer Alpha Video Output #42997

New Issue

Aaron Carlisle · 2014-12-23T19:10:56+01:00

Aaron Carlisle commented

2014-12-23 19:10:56 +01:00

System Information

Windows 8.0 Intel HD 4600

Blender Version

Broken: 2.72b

Short description of error

I don't know weather this is a bug or a design issue. Some codecs don't show that they support Alpha Channels.

Example PNG codec shows that it supports Alpha and HuffYUV does support Alpha but Blender does not specify this

Exact steps for others to reproduce the error

Open Blender
In Properties change the render output to a movie file e.g. H.264
Under encoding select a format e.g. QuickTime
Under Codec choose PNG
Now look back in Output gives you the option for BW RGB and RGBA
Back in codec choose another codec that supports alpha e.g. HuffYUV.
Now Looking back in the Output you only get the option of BW and RGB

This is the only known one that has this bug but other codecs that support Alpha that I don't know of because of this bug may.

**System Information** Windows 8.0 Intel HD 4600 **Blender Version** Broken: 2.72b **Short description of error** I don't know weather this is a bug or a design issue. Some codecs don't show that they support Alpha Channels. Example PNG codec shows that it supports Alpha and HuffYUV does support Alpha but Blender does not specify this **Exact steps for others to reproduce the error** 1. Open Blender 2. In Properties change the render output to a movie file e.g. H.264 3. Under encoding select a format e.g. QuickTime 4. Under Codec choose PNG 5. Now look back in Output gives you the option for BW RGB and RGBA 6. Back in codec choose another codec that supports alpha e.g. HuffYUV. 7. Now Looking back in the Output you only get the option of BW and RGB This is the only known one that has this bug but other codecs that support Alpha that I don't know of because of this bug may.

Aaron Carlisle commented

2014-12-23 19:10:56 +01:00

Changed status to: 'Open'

Aaron Carlisle commented

2014-12-23 19:10:56 +01:00

Added subscriber: @Blendify

blender-admin commented

2014-12-24 14:54:38 +01:00

This issue was referenced by 607c45ae6b

This issue was referenced by 607c45ae6b8ecf0b4ce5278f4fbecb575efcb308

Sergey Sharybin self-assigned this 2014-12-24 14:55:37 +01:00

Sergey Sharybin commented

2014-12-24 14:55:37 +01:00

More like a feature request, but will commit the changes when Git is open after the release.

Sergey Sharybin commented

2014-12-24 16:32:55 +01:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2014-12-24 16:32:55 +01:00

Sergey Sharybin commented

2014-12-24 16:32:55 +01:00

Closed by commit 607c45ae6b.

Closed by commit 607c45ae6b.

Aaron Carlisle commented

2014-12-24 16:50:28 +01:00

Are HuffYUV and PNG the only codecs that support alpha?

Sergey Sharybin commented

2014-12-24 21:32:05 +01:00

For that you'll need to look over FFmpeg headers and extract that information manually. Also, some of the codecs might support alpha in ffmpeg and not in other applications. So it's somewhat dangerous option to play with..