[FFmpeg-trac] #4132(avformat:open): Remuxing of VP61 from NSV to FLV flips video
FFmpeg
trac at avcodec.org
Sat Nov 22 22:55:01 CET 2014
#4132: Remuxing of VP61 from NSV to FLV flips video
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Reporter: dort | Owner:
Type: defect | Status: open
Priority: minor | Component: avformat
Version: git-master | Resolution:
Keywords: flv | Blocked By:
Blocking: | Reproduced by developer: 1
Analyzed by developer: 0 |
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Changes (by cehoyos):
* status: new => open
* reproduced: 0 => 1
* component: undetermined => avformat
* priority: normal => minor
* version: 2.4.3 => git-master
* keywords: => flv
Comment:
For future tickets: Please always test current FFmpeg git head before
reporting a problem.
Assuming you mean "vertically flipped", this is impossible to fix:
The versions of On2 VP6 video in nsv and flv differ: One is flipped, the
other not. You have to force the correct version of the decoder with
{{{-vcodec vp6}}} if you want to decode such files.
I will send a patch to print a warning when the "wrong" version of VP6 is
muxed in flv.
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Ticket URL: <https://trac.ffmpeg.org/ticket/4132#comment:2>
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