Bug Report - DeoVR is leaving behind ffmpeg.dll processes after exiting

[Bethor]

There seems to be 1 ffmpeg.dll process spawned for each video played - these are all left running indefinitely after closing DeoVR. I have to manually kill each one.

This started happening recently. Seems like a bug

[NookieMonster]

That's odd, are you using ffdshow (DirectShow)?
By default Deo uses LAV, not ffmpeg

[Bethor]

I have directshow off in Deo, but it is set for LAV not ffdshow

[NookieMonster]

Are you mirroring?

[Bethor]

no

[NookieMonster]

Can you try something for me?
(assuming you're using windows 10)

Make sure all ffmpeg instances are closed.
Maybe even close the Steam client.
Play an mp4 with Movies & TV app and close it again.

Do you now have ffmpeg still running?

[Bethor]

Yes I have Windows 10. I tried it - Films and TV doesn't load ffmpeg, I'm assuming it's using Media Foundation being a Windows app?

I have K-Lite codec pack installed so I tried Media player classic, that doesn't load ffmpeg either. Codec Tweak Tool preferred directshow filters are set to default LAV

[NookieMonster]

Hi Bethor.

Deo also uses WMF.
The devs earlier could tell me ffmpeg is used to generate thumbnails in DeoVR, nothing else.
They have put it on the bug-list.

Thanks for reporting this!

[Bethor]

Interesting - I have had major slowdowns when thumbnails are generating, I had to switch to list view.
Glad to help, looking forward to a fix!

[Kerag]

Originally posted by NookieMonster:

Hi Bethor.

Deo also uses WMF.
The devs earlier could tell me ffmpeg is used to generate thumbnails in DeoVR, nothing else.
They have put it on the bug-list.

Thanks for reporting this!

exactly. It happens when tghumbnails are getting generated. if I use list with no thumbnails the issue is gone.

[Arcelux]

5 years later and this ♥♥♥♥ still happens

[Black Mesa]

Hello and here is the fix:

1. Download ffmpeg.exe:
https://www.gyan.dev/ffmpeg/builds/ffmpeg-release-full.7z (ffmpeg.exe is inside \bin\ folder)

2. Rename the ffmpeg.exe to ffmpeg.dll (Disable "Hide extensions for known file types" if you can't)

3. Replace it with the ffmpeg.dll in:
C:\Program Files (x86)\Steam\steamapps\common\DeoVR Video Player\DeoVR_Data\Plugins\x86_64\

4. Enjoy and leave an award :)

EXPLANATION:

ffmpeg.dll inside DeoVR is not a DLL file. It is an EXE file. It just has a wrong file extension.
And this ffmpeg file is somehow broken to hang on thumbnail generation for some video files.