[FFmpeg-trac] #3314(undetermined:new): ffmpeg -b:v 1M -c:v libvpx-vp9 produces large blocks of color corruption
FFmpeg
trac at avcodec.org
Fri Jan 17 13:14:50 CET 2014
#3314: ffmpeg -b:v 1M -c:v libvpx-vp9 produces large blocks of color corruption
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Reporter: Hello71 | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: unspecified | undetermined
Keywords: libvpx | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
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Comment (by Hello71):
Replying to [comment:1 cehoyos]:
> Is the problem reproducible with {{{-an}}}?
Yes.
> Does {{{-f lavfi -i testsrc}}} allow to reproduce?
[lavfi @ 0xd1b820] No such filter: '4ls.mkv'
4ls.mkv: Invalid argument
> Please test current git head.
Compiling.
Of note, the issue may not be -b:v itself, but passing a sufficiently high
-b:v. -b:v 200k does not appear to exhibit the problem, but -b:v 1M does.
Is there any way to extract a vpxenc command that I could run manually to
test this?
When I ran vpxenc, I passed --target-bitrate=1000, but I have no idea what
any of the more internal options do, so I omitted them.
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Ticket URL: <https://trac.ffmpeg.org/ticket/3314#comment:2>
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