ChanServ changed the topic of #ffmpeg to: Welcome to the FFmpeg USER support channel | Development channel: #ffmpeg-devel | Bug reports: https://ffmpeg.org/bugreports.html | Wiki: https://trac.ffmpeg.org/ | This channel is publically logged | FFmpeg 7.1.1 is released
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<kmikita>
When I recode (no filter used, codec mpeg4 or libxvid) any input file with ffmeg-7.1.1, I got output rotated 90 degrees. ffmpeg-3.4.11 is ok.
<kmikita>
Input 624x448 [SAR 1:1 DAR 39:28]
<kmikita>
Output 448x624 [SAR 1:1 DAR 28:39]
<kmikita>
I need force use "-vf transpose=2" to fix it
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<JEEB>
kmikita: you can override rotation metadata read from input, it should also show it in the input info with `-v verbose`
<JEEB>
can you check `ffprobe -v verbose -of json -select_streams v -show_frames -read_intervals '%+#2' -i INPUT` which should output the first two decoded frames or so?
<JEEB>
because the transpose logic is *very* specific, it only gets executed if the input has a rotation that matches `fabs(theta - 90) < 1.0` or `fabs(theta - 270) < 1.0`
<kmikita>
"-display_rotation:v 0" prevent rotation, but no one input file ever had rotation metadata
<JEEB>
yea I don't see it either at least in those pastes, but the logic is quite specific
<JEEB>
can you provide the first XYZ megabytes of that sample file through 0x0.st or so?
<JEEB>
so that in case someone here has the time, they could check whether they can replicate it with 7.1 or current master
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<JEEB>
(I don't atm)
<JEEB>
but without sample it's not really possible to easily see where things go derp
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<kmikita>
JEEB, ffmpeg builded with clang "-march=native -O3 -ffast-math -flto=full". Can this affect the calculations?
<JEEB>
better to provide a sample, if you can dd the first 10 or 20 megabytes of the input (`dd if=INPUT of=OUTPUT bs=1M count=10`), then if it locally makes it do the same thing, try posting it on 0x0.st with curl or so
<JEEB>
then people unrelated to your environment, versions etc can try it.