[FFmpeg-user] Hi, I want to ask a question about ffmpeg using dxva2 with multithreads

Roger Pack rogerdpack2 at gmail.com
Mon Jun 25 15:59:52 CEST 2012

> Yes, I have modify the code in my test project.Added load dxva2 and use
> dxva2 to decode h264.Rescently, I added a thread to use dxva2 decode h264.
> Primary thread do the encode work,and it just get the decoded frame,the
> decode work has given to dxva2 thread.Then they can work paiallely,and the
> speed is faster on my computer.

Maybe you can submit your patch sometime, so the rest of us can get a
speed boost as well :)

> But now I have a question.
> If I use this mode,sometimes,the ffmpeg.exe drop 1 frames
> Do you have any ideas where it gose wrong?

It only drops them with your multi thread patch, not otherwise?
Also maybe the VLC developers might have some insight...

More information about the ffmpeg-user mailing list