Bruce Markey wrote:
Chris Pinkham wrote:
I'm having an issue recently. My commercial detection seems to
detect perfectly (duration wise) but the commercial skips about 5-15
seconds early. So I miss 5-15 seconds prior to each break and see
about 5-15 seconds of the last commercial. The clocks on both
machines are synced up to each other. My system is made up of
master backend, slave backend, and remote frontend.
Any suggestions appreciated.
Can you look at the frame numbers for the commercial markers in
recordedmarkup and see if they match up to the proper frame numbers
where commercials start/end when you look at them in the editor?
If the frame numbers match up (so commercial detection is correct),
you can put some debug statements into
NuppelVideoPlayer::AutoCommercialSkip() to see if this is being
triggered early for some reason or if frame numbers look off in
there for some reason.
Chris, this problem has existed for a long time with software encoding
but I hadn't ever wanted to bother you with it. If a file is damaged
by a pegged CPU, temporary loss of signal or any other reason that
might cause a significant number of dropped frames, the commercial
markers will be off by the same amount for the remainder of the show.
I assume that this is because the frame numbers are sequential and
don't count the dropped frames while something else is assuming the
frame number should be time * framerate.
To confirm part of this, I am using 2 software capture cards in the
master backend and a single PVR-150 in slave backend. It only seems
that this started recently when I am capturing 3 shows. The slave
backend has no local disk so it is writing over the network to the
master. The master is indeed close to CPU bound with 2 simultaneous
recordings + commflagging. The shows that exhibit this typically have
portions in them when I watch them were the video lags behind the audio
(dropping frames) but eventually catches up.
Kevin
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