Detecting failed encoding attempts

[ethermeme]

Hi Everyone,

I'm running panda from git checkout
65acf4d19dfea7543c5156873a338d732c98ee44, Dec 2 17:06:40 2009.
Sometimes when an encoding fails, videos get stuck with the
"processing" status permanently. I've tried to implement a monitor
script that detects this and updates our site's database to indicate
an error, but because the order of queue processing is unpredictable,
I haven't been able to figure out a way to do this.

How exactly *should* I monitor for failures? If panda can't update my
site via the state_update_url when it fails, and I can't predict the
order of the processing queue, what can I watch for to recover from
failures?

Thank You,
Troy

[Damien Tanner]

Hi,

In the new arch, what we do is run the encoding in a separate thread which monitors ffmpeg, then the main encoder process sends a keepalive out very so often. This means that if an encoder dies for some reason, we know which encodings need reprocessing.

I know some people have implemented similar systems internally on top of the open source version.

Damien Tanner - Co-Founder and Director, Panda +44 (0)20 7099 7486 - pandastream.com - @pandastream

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