Discussion:
[Savonet-users] what does "We must catchup" mean?
k054
2017-04-10 00:38:28 UTC
Permalink
hi everyone!

I've been toying with Liquidsoap for video streaming and it work
amazingly well but from time to time stdout shows a bunch of these
messages and I'm uncertain of their meaning.
[clock.wallclock_main:2] We must catchup 9.91 seconds!
does it mean the video is not being trans-coded as fluidly as it's being
streamed or the other way around? it has happend at different moments
during the same video, so I would guess it's not strictly video related.
Also as far as it' doesn't reach more than 60 seconds it can self
recover. Otherwise it breaks connection to the icecast server and
recovers without human intervention needed after showing this message
[clock.wallclock_main:2] Too much latency! Resetting active sources...
[/XXXXXXXXXXXX:3] Closing connection...
[/XXXXXXXXXXXX:2] Connection failed: 403, Forbidden (HTTP/1.0)
[/XXXXXXXXXXXX:3] Will try again in 3.00 sec.
[/XXXXXXXXXXXX:3] Connection setup was successful.
Then it comes back and randomly fails or not again but most of the times
it doesn't even reach the point to break connection and it actually
catches up before it happens

sometimes it even shuts
[clock.wallclock_main:2] We must catchup 24.03 seconds (we've been late for 100 rounds)!
but it makes no difference.

any hint?

thanks in advance!
--
k054
Romain Beauxis
2017-04-10 15:04:08 UTC
Permalink
Hi,

This message means that the computer running your liquidsoap program is not
able to process it in real-time. Usually, this indicates too much load on
the CPU, either because of other programs or because the processing itself
outweights the CPU capacity, for instance when encoding video.

This can be an issue if you plan on producing live online streams. Cases
where this may not be an issue include for instance, generating an encoded
file, in which case you may want to look at assigning a non-real time clock.

You can read more in our documentation, probably starting here:
http://liquidsoap.fm/doc-1.2.1/faq.html#We_must_catchup_x_xx_

Romain
Post by k054
hi everyone!
I've been toying with Liquidsoap for video streaming and it work
amazingly well but from time to time stdout shows a bunch of these
messages and I'm uncertain of their meaning.
[clock.wallclock_main:2] We must catchup 9.91 seconds!
does it mean the video is not being trans-coded as fluidly as it's being
streamed or the other way around? it has happend at different moments
during the same video, so I would guess it's not strictly video related.
Also as far as it' doesn't reach more than 60 seconds it can self
recover. Otherwise it breaks connection to the icecast server and
recovers without human intervention needed after showing this message
[clock.wallclock_main:2] Too much latency! Resetting active sources...
[/XXXXXXXXXXXX:3] Closing connection...
[/XXXXXXXXXXXX:2] Connection failed: 403, Forbidden (HTTP/1.0)
[/XXXXXXXXXXXX:3] Will try again in 3.00 sec.
[/XXXXXXXXXXXX:3] Connection setup was successful.
Then it comes back and randomly fails or not again but most of the times
it doesn't even reach the point to break connection and it actually
catches up before it happens
sometimes it even shuts
[clock.wallclock_main:2] We must catchup 24.03 seconds (we've been late
for 100 rounds)!
but it makes no difference.
any hint?
thanks in advance!
--
k054
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