[FFmpeg-trac] #3817(undetermined:new): h.264: decoding gives duplicated frame

FFmpeg trac at avcodec.org
Tue Aug 5 09:41:14 CEST 2014

#3817: h.264: decoding gives duplicated frame
             Reporter:  MkMs         |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:  h264         |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0

Comment (by MkMs):

 First log (ffmpeg-20140731-105226.log​):
 Using the quantization to get a video version of lower quality (with

 Second and third log ( ffmpeg-20140731-110030.log &
 Show/ Check only the absolute number of frames - unnecessary for
 programming, only to show the possible bug. Even without
 -pix_fmt yuv420p
 I get one more frame (84 frames than in original "baumgartner.mp4")

 You are using libx264?

 ffmpeg.exe -i baumgartner.mp4 -c:v libx264 -q:v 32 -pix_fmt yuv420p

Ticket URL: <https://trac.ffmpeg.org/ticket/3817#comment:4>
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