avformat/segment: Various segment muxer improvements

[softworkz]

Includes

• Two new options
  • segment_write_temp
    Allows to write segments as temp files (.tmp) which are renamed on completion
  • segment_limit
    Stop after n segments have been written
• some minor changes (option contraints and formatting fixes)

Versions

V2

• merge the documentation patch with the feature patch
• segment_write_temp: use av_asprintf() directly instead of strlcatf() + av_strdup()
  (as per review by Marton - thanks!)
• removed logging patch

.

[softworkz]

/submit

[ffmpeg-codebot]

Submitted as [email protected]

To fetch this version into FETCH_HEAD:

git fetch https://github.com/ffstaging/FFmpeg pr-ffstaging-96/softworkz/submit_segment_muxer-v1

To fetch this version to local tag pr-ffstaging-96/softworkz/submit_segment_muxer-v1:

git fetch --no-tags https://github.com/ffstaging/FFmpeg tag pr-ffstaging-96/softworkz/submit_segment_muxer-v1

[softworkz]

/submit

[ffmpeg-codebot]

Submitted as [email protected]

To fetch this version into FETCH_HEAD:

git fetch https://github.com/ffstaging/FFmpeg pr-ffstaging-96/softworkz/submit_segment_muxer-v2

To fetch this version to local tag pr-ffstaging-96/softworkz/submit_segment_muxer-v2:

git fetch --no-tags https://github.com/ffstaging/FFmpeg tag pr-ffstaging-96/softworkz/submit_segment_muxer-v2

[ffmpeg-codebot]

On the FFmpeg mailing list, Michael Niedermayer wrote (reply to this):

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On Sat, Jun 14, 2025 at 12:59:10AM +0000, softworkz wrote:
> From: softworkz <[email protected]>
>=20
> Signed-off-by: softworkz <[email protected]>
> ---
>  libavformat/segment.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

should be ok

thx

[...]
--=20
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Frequently ignored answer#1 FFmpeg bugs should be sent to our bugtracker. U=
ser
questions about the command line tools should be sent to the ffmpeg-user ML.
And questions about how to use libav* should be sent to the libav-user ML.

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