[FFmpeg-trac] #8106(undetermined:reopened): Unexpected audio truncation with `-c:a copy`
FFmpeg
trac at avcodec.org
Tue Jan 7 05:44:49 EET 2020
#8106: Unexpected audio truncation with `-c:a copy`
-------------------------------------+-------------------------------------
Reporter: gdgsdg123 | Owner:
Type: defect | Status: reopened
Priority: normal | Component:
| undetermined
Version: git-master | Resolution:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by gdgsdg123):
Replying to [comment:10 cehoyos]:
> Did you try without `loop`?
Similar result expected...
[comment:2 gdgsdg123]:
> \\6. Removing `-vframes` and `-loop`:
> {{{
> ffmpeg -i "Entrepreneurship.png" -i "1.flac" -c:a copy -c:v libx264 -r
15 -preset placebo -qp 0 -x264-params "level=5.1:keyint=infinite:no-
deblock=1" -pix_fmt yuv420p -sws_flags spline+accurate_rnd+full_chroma_int
-color_range 1 -colorspace 5 -color_primaries 5 -color_trc 6 "1.mkv"
> }}}
> The truncation no longer occurs, though again there's another problem...
(1 frame video)
[[BR]]
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Replying to [comment:11 pdr0]:
> use -r and -loop as input options for the image, and -shortest...
Minimized command to reproduce (of similar effect):
{{{
ffmpeg -y -loop 1 -i "random.png" -i "1.webm" -c:a copy -shortest "1.mkv"
}}}
[comment:2 gdgsdg123]:
> ...The cause seems to be `-vframes`/`-t`/`-to`/etc. interfering on `-c:a
copy`.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/8106#comment:12>
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