Am 08.07.22 um 22:30 schrieb Reindl Harald:
Am 08.07.22 um 18:16 schrieb Greg Oliver:
On Fri, Jul 8, 2022 at 5:25 AM jb <jonba...@gmail.com> wrote:
Hello everybody,
I have a control program which running as a systemd service. This
program spawns ffmpeg and that is writing to a HLS playlist. I use this
flags:
-hls_flags
append_list+delete_segments+omit_endlist+program_date_time
The interesting thing is, when I stop the systemd process my HLS
playlist got wiped out and when I start the service again ffmpeg will
not continue the playlist, instead it writes a new one.
When I run my control program directly from shell, I don't have this
behavior. I can stop the program and start it again and the HLS
playlist
will continue.
Does anybody notice this different behaviors? And has an idea why this
is happen and what I can do here?
systemd is not stateful - unless you create stateful files with your
exec{pre,post,start} stanzas, it will get overwritten every time
"systemd is not stateful" means nothing on it's own
stateful *for what*
even "PrivateTmp" is *not* default enabled, but when you enable it and
your application trie sto re-use files in /tmp they are gone
Thank you for your suggestions! PrivateTmp=no was not working, but I did
some more tests and figure out: the problem is related to the way
systemd stops child processes. When I run ffmpeg directly with systemd
the content from the m3u8 playlist survive, but when I start ffmpeg from
a bash script, or my control program, the content got deleted.
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