WMF decoder green screen issue

valankar · 05-22-2022, 06:45 AM

When using the WMF decoder, I don't see the video properly. Switching to the VLC decoder seems to fix it.

Please see this video:

https://youtu.be/dnpBHjagrPc

Here is the video properties:

Using v6.58 on Windows.

schwa · 05-22-2022, 06:53 AM

Can you share a link to the source video? (We need to know the specifics of the source media that the decoder is failing on.)

valankar · 05-22-2022, 07:03 AM

Here ya go:

http://valankar.pontus.feralhosting.com/source.mkv

It is about 800Mb. I can probably make a shorter one if it's too large, just let me know.

schwa · 05-22-2022, 07:11 AM

If it's easy to make a shorter one that would be helpful! Otherwise we can see what we can do with this.

valankar · 05-22-2022, 07:20 AM

Here's a shorter one, about 5MB:

http://valankar.pontus.feralhosting.com/source2.mkv

Maybe related to the resolution. They are OBS recordings of a widescreen.

schwa · 05-22-2022, 08:59 AM

Hmm, thanks. Internally, the file opens correctly and the decoder reports that everything is fine, it just doesn't decode any frames. I notice that Windows Media Player fails similarly, with no apparent error except that the frames are blank, which suggests the problem is on the Windows side, not REAPER.

We'll look to see if there is some way we can detect files that fail in this way and fall back to a different decoder.

05-22-2022, 06:45 AM	#1
valankar Human being with feelings Join Date: Jan 2016 Location: Switzerland Posts: 139	WMF decoder green screen issue When using the WMF decoder, I don't see the video properly. Switching to the VLC decoder seems to fix it. Please see this video: https://youtu.be/dnpBHjagrPc Here is the video properties: Using v6.58 on Windows. Last edited by valankar; 05-22-2022 at 06:52 AM.

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05-22-2022, 06:53 AM	#2
schwa Administrator Join Date: Mar 2007 Location: NY Posts: 16,519	Can you share a link to the source video? (We need to know the specifics of the source media that the decoder is failing on.)

05-22-2022, 07:03 AM	#3
valankar Human being with feelings Join Date: Jan 2016 Location: Switzerland Posts: 139	Here ya go: http://valankar.pontus.feralhosting.com/source.mkv It is about 800Mb. I can probably make a shorter one if it's too large, just let me know.

05-22-2022, 07:11 AM	#4
schwa Administrator Join Date: Mar 2007 Location: NY Posts: 16,519	If it's easy to make a shorter one that would be helpful! Otherwise we can see what we can do with this.

05-22-2022, 07:20 AM	#5
valankar Human being with feelings Join Date: Jan 2016 Location: Switzerland Posts: 139	Here's a shorter one, about 5MB: http://valankar.pontus.feralhosting.com/source2.mkv Maybe related to the resolution. They are OBS recordings of a widescreen.

05-22-2022, 08:59 AM	#6
schwa Administrator Join Date: Mar 2007 Location: NY Posts: 16,519	Hmm, thanks. Internally, the file opens correctly and the decoder reports that everything is fine, it just doesn't decode any frames. I notice that Windows Media Player fails similarly, with no apparent error except that the frames are blank, which suggests the problem is on the Windows side, not REAPER. We'll look to see if there is some way we can detect files that fail in this way and fall back to a different decoder.