[FFmpeg-trac] #6031(undetermined:new): Hang while converting WTV to MP4
FFmpeg
trac at avcodec.org
Mon Dec 19 23:48:39 EET 2016
#6031: Hang while converting WTV to MP4
-------------------------------------+-------------------------------------
Reporter: kazuna | Type: defect
Status: new | Priority: important
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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I have a WTV file which causes ffmpeg to hang when converting to MP4.
This is a regression introduced some time around July this year.
Reproduce on FFmpeg (20161210/64-bit/static).
Not Reproduce on FFmpeg (20160619/64-bit/static).
To reproduce, I run a batch file on Windows 10:
{{{
:LOOP
ffmpeg -i ABC.WTV -y -s 1280x720 -c:v libx264 -preset veryfast -c:a copy
ABC.MP4
GOTO LOOP
}}}
It may not reproduce the problem at the first loop but it won't take long.
For me, it reproduces 50% at the first loop and 90% at the second loop.
When it reproduces, I see no interesting console output but it just hangs
at a random frame number while counting the frame:
{{{
Input stream #0:1 frame changed from size:720x480 fmt:yuv420p to
size:1280x720 fmt:yuv420p
Past duration 0.795464 too large
frame=31281 fps=255 q=26.0 size= 217464kB time=00:17:23.40
bitrate=1707.4kbits/s dup=78 drop=31153 speed= 8.5x
}}}
Please download the sample WTV file from:
https://www.dropbox.com/s/0w7xs82fxu9tj1t/ABC.WTV?dl=0
--
Ticket URL: <https://trac.ffmpeg.org/ticket/6031>
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