[mythtv-users] Request for help making live TV useable

Taylor Ralph taylor.ralph at gmail.com
Thu Apr 21 14:31:59 UTC 2011

On Thu, Apr 21, 2011 at 9:18 AM, Mark Lord <mythtv at rtr.ca> wrote:
> On 11-04-21 04:47 AM, warpme wrote:
> ..
>>> However.. I also noticed a bunch of decoder fixes in trunk,
>>> dealing with calculating the number of buffers needed,
>>> and fixing bugs where buffers were being recycled while
>>> still in use and so on.
>>> So I backported those as well to 0.24-fixes. This seems to have made
>>> a noticeable improvement in my PVR-250 LiveTV channel changes.
>>> I can now often change channels 8-10 times without locking up,
>>> whereas normally only (exactly) three channel changes were needed before.
>> Hi,
>> May You post here list of backported commits.
>> I have quite similar problems to Yours and want to try backport and see how it helps in my case.
> ..
> I began with this commit from tralph:
> https://github.com/MythTV/mythtv/commit/f8c108ef9a5c6bac9ec2414c47e2f404047e43b9
> and then added a few follow-on commits from  mark-kendall:
> https://github.com/MythTV/mythtv/commit/f54bfcb57dc26cc3a084be8fbed4bc4620726b1b
> https://github.com/MythTV/mythtv/commit/f2713206d10b3ce3198bf4bb40cb60206a36c3d8
> https://github.com/MythTV/mythtv/commit/bd7d2da5b17cdf15c51828548080633be948c79b
> https://github.com/MythTV/mythtv/commit/7d302773791cc8e5d31500143549e25a3ab591fc
> And finally the commit that eliminates any need to set vdpaubuffersize=
> in the playback profiles:
> https://github.com/MythTV/mythtv/commit/5e04d57bc87a6f422ccba79a493bebef50566162
> Those did not all apply cleanly to 0.24-fixes, so a bit of work was required
> to get them to play nicely.
> Oh and there was one other commit in there somewhere to initialize
> the vdpau surface states or something --> that one gets rid of the corrupted
> screen backgrounds after a mythfrontend crash.
> Anyway, the patch files that work for me are now on my server
> at http://rtr.ca/mythtv_patches/  --> patches 40 through 45.
> They probably will apply cleanly to any mythtv-0.24-fixes base,
> but there might be a mismatch or two due to other patches
> (not yet made available) which I may have applied underneath it all.
> Cheers

You might want to add this to your back-port recipe as it directly
impacts channel changing:


Also, the zero-byte file you see is normal and used by the signal monitor.


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