[FFmpeg-trac] #604(avcodec:new): Multithreaded ffmpeg decode with DXVA2 hangs

FFmpeg trac at avcodec.org
Thu Nov 3 19:06:09 CET 2011

#604: Multithreaded ffmpeg decode with DXVA2 hangs
             Reporter:  IMarshal    |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |

Comment (by cehoyos):

 Replying to [comment:4 IMarshal]:
 > Unfortunately, I find debugging ffmpeg on Windows pretty challenging,
 given that mingw builds don't have symbolic information as per what the
 standard platform tools expect.  Do you have any tips or hints on how best
 to debug this?

 gdb works fine on Windows.

 > If any of the ffmpeg core developers were to attack this problem, I've
 be overjoyed to help in terms of providing help with repro cases, builds
 of Plex and so forth.  I'm sure we're not the only user of ffmpeg hitting
 this issue, so it would be great to get it fixed for everyone.

 I am still surprised that this problem does not hit vlc users.
 (mplayer -vc ffh264vdpau -lavdopts threads=8 also works fine.)

 Carl Eugen

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/604#comment:5>
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