This code is to sync to a live source when there is a delay
between start and when we receive the first buffer, so it does
not make sense in a non live case.
This fixes playback of streams where the input timestamps are
based off some arbitrary offset.
https://bugzilla.gnome.org/show_bug.cgi?id=663756
Initially creating an identity element to forward serialized
events downstream before any caps are known is broken behaviour.
Serialized events should only be forwarded downstream if the
caps are already known, otherwise autopluggers and other elements
using pad-blocks will fail.
This behaviour also doesn't work anymore after basetransform
was fixed to queue serialized events until the caps are known
as a result of fixing bug #659571.
See bug #599469, #665205.
One of my dvds jump on some position and miss about 1 minute of stream.
The reason was mpeg timestamps. On some position scr difference is negative.
It produced negative timestamps. Since it was converted to unsigned value,
gstreamer timestamps was invalid. Instead of increasing mpeg ts,
they was decreasing till it started to be positive.
The jump in timestamps caused mpeg2dec to skip frames to make QoS happy.
This patch just make diff unsigned to avoid negative values.
Signed-off-by: Alexey Fisher <bug-track@fisher-privat.net>
https://bugzilla.gnome.org/show_bug.cgi?id=656115
The spec I found says "16 bits".
The existing code used log2(somevalue)+1.
ffmpeg uses log2(somevalue-1)+1.
The code now uses log2(somevalue-1)+1, and this makes it work with
some sample video without breaking another sample.
Now, I'm far from certain I've got the right spec, I found it by
searching the internet, so...
https://bugzilla.gnome.org/show_bug.cgi?id=654666
Some streams declare PIDs but will not send data for them.
Ensure we time out on those, and both send new segments to
keep their time synchronized with the rest, and do not wait
forever before deciding to signal no-more-pads.
https://bugzilla.gnome.org/show_bug.cgi?id=659924
We track streams for which a data callback is set (and for which
pads will be added only when data is received), and signal
no-more-pads when the last pad is added.
https://bugzilla.gnome.org/show_bug.cgi?id=659924
There was a second threshold, which apparently needs to be smaller
than the first, though I'm not certain of it as I don't understand
yet this nest of wtf that is the mpeg demuxer timing logic.
Fixes video freezing on one (corrupted) MPEG sample. It would
previously never think it was out of the discontinuity, and would
push buffers with no timestamp.
Now this took me more than a day's poking at the thing, for just
one constant change, and I'm scared to have to touch this again :S
https://bugzilla.gnome.org/show_bug.cgi?id=655804
In a test stream, I get one buffer with a PTS of about 15 seconds
in the future compared to the previous one, and next buffers with
timestamps continuing where the original ones left off.
This caused the sink to wait 15 seconds to display the frame while
more frames queued up, and then dump all the subsequent frames as
they "arrived too late".
Maybe that threshold should be made configurable, but for now,
make it more smaller to catch more of these.
https://bugzilla.gnome.org/show_bug.cgi?id=655804
Non AV streams keep using the larger threshold (10 minutes), as
subtitles may arrive only every so often.
