I've been experimenting with running LMS in the 'Doliana Docker
container'
(https://github.com/DOliana/docker-image-logitech-media-server).
Everything appears to be working, except for a problem with
Squeezelite.
After playing a track for around 8 minutes (the exact time may be random
or dependent on the LMS version, not sure), the audio cuts out and the
progress in the LMS web interface hovers at the point at which the audio
stopped playing. About 20 secs later, it resumes and plays normally
until the end of the track.
Running SqueezeLite and LMS with debugging reveals that about 10 secs
prior to the cutout, audio stops being decoded on the client, the output
buffer runs down and then the client sends Slimproto STMo and is
apparently told to pause by the server. At the end of the break in
music, strm-q (stop) is received from the server and then playback is
started afresh. There is no spike in network or disc activity in the
server (a Pi4) and the heartbeat STMt and strm-t are transmitted and
received as normal between the client and server while the buffer is
running down and during the pause.
Curiously, this doesn't seem to occur when I use a natively installed
LMS on a Pi3 with the same Squeezelite player or when the Dockerised LMS
is driving a hardware player (a Squeezebox Controller).
This occurs on LMS 7.92 and 8.0 (latest nightlies as of about 8th May
2020) with Squeezelite 1.9.6-1210 ("win" and "ffmpeg" builds) on Win 10.
It is common to at least flac and aac (in an m4a container) locally
stored audio.
Can anybody help me diagnose this problem? I'm not sure whether it's
likely to be a problem with the client or server or why Docker should
make a difference (or why, if it is Docker and therefor a server issue,
it wouldn't affect hardware playback). I've turned up debugging on the
client and server, but may have missed something, particularly on the
server side as I haven't known what logging categories I should be
concentrating on and have masses of logging data coming out. A
suggestion for the relevant logging categories might be a good start.
Thanks for any help.
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