I'm using ffmpeg to connect to an icecast server and save its AAC audio
stream to m4a files each 5 minutes long.
Occasionally, about 1 in 15 or 20 files, the name of the file has
timestamp one second after the desired atclocktime, like
name-20201115T144500Z.m4a
name-20201115T145000Z.m4a
name-20201115T145500Z.m4a
name-20201115T150000Z.m4a
name-20201115T150501Z.m4a
I do not have this issue with MP3 shoutcast/icecast streams.
What can I do to prevent this and get ffmpeg to write files with the
atclocktime? instead of what I assume is the actual time when the file
is written.
ffmpeg \
-i http://icecast.ser.ver/mount \
-c copy \
-f segment \
-segment_format_options movflags=+faststart \
-segment_time 300 \
-segment_atclocktime 1 \
-break_non_keyframes 1 \
-strftime 1 \
name-%G%m%dT%H%M%SZ.m4a
When working with an MP3 stream the command has segment_format_options
write_xing=0 and mp3 output file extension.
Tom
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