[mythtv-users] mythtv branch fixes/0.26 updated by jpoet. v0.26.0-111-g3944ca9

Jim Stichnoth stichnot at gmail.com
Sat Mar 9 16:06:41 UTC 2013


On Wed, Mar 6, 2013 at 9:08 AM, Warpme <warpme at o2.pl> wrote:

> Hi,
> Sorry to say, but
>
> commit e54b9b6fd635df024f81c1d2f33956**996c95c379
> Author: John Poet <jpoet [at] mythtv> at Tue, 12 Feb 2013 10:26:30 -0700
> Committer: John Poet <jpoet [at] mythtv> at Fri, 1 Mar 2013 16:10:26 -0700
> URL: http://code.mythtv.org/cgit/**mythtv/commit/?id=**
> e54b9b6fd635df024f81c1d2f33956**996c95c379<http://code.mythtv.org/cgit/mythtv/commit/?id=e54b9b6fd635df024f81c1d2f33956996c95c379>
> DTVRecorder: buffer up each payload until we know if the payload is a
> keyframe.
> Especially with H.264, we can be several packets into a payload before we
> know if it is a keyframe or just a frame or something else. Always buffer
> the packets of a payload until we know what we are doing with the payload.
> If we need to switch ringbuffers, we now do it so the new file will start
> at
> the beginning of the payload holding a keyframe. Each file will also start
> with a PAT/PMT if the "recorder" calls for it.
> (cherry picked from commit 87a15e1ce40d81058ff221308d666d**73b1517ff2)
>
> decreases for me LiveTV experience on current 0.26-fixes.
> I see user experience regression in following 3 areas of LiveTV:
> 1.channel change is slower (from 3-5sec to 7-10sec)
> 2.on many channels, after changing to channel there is annoying audio
> stuttering for 3-4sec
> 3.on some channels, after changing to new channel LiveTV "halts" on old
> channel. Switching to another channel helps.
> 4.sometimes transition between programs on current channel hangs LiveTV.
>
> Without this commit, 2 is very sporadic and 1,3,4 seems to not happen.
> Above issues were so annoying that my hommies asked me to solve problem
> and reverting this commit seems to solve problem


 I can see how the commit would contribute to #1, but it's hard for me to
imagine why it would cause an additional 4-5 second delay.  What tuner are
you experiencing this with - HD-PVR?

Jim
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.mythtv.org/pipermail/mythtv-users/attachments/20130309/161dad53/attachment.html>


More information about the mythtv-users mailing list