[mythtv] FFmpeg sync

John P Poet jppoet at gmail.com
Thu Sep 18 00:51:39 UTC 2008

On Wed, Sep 17, 2008 at 3:32 PM, John P Poet <jppoet at gmail.com> wrote:
> On Wed, Sep 17, 2008 at 12:32 PM, Janne Grunau <janne-mythtv at grunau.be> wrote:
>> On Wednesday 17 September 2008 18:48:31 John P Poet wrote:
>>> I installed this patch last night.  Tried watching about a dozen
>>> different shows, all with AC3.  Some where ATSC OTA, and some where
>>> from the HD-PVR.  I had zero problems.  S/PDIF pass-through worked
>>> fine, as well as timestretch.
>> Good to know.
>>  I remembered two issues in the patch. Some AC3 streams doesn't play
>> correctly anymore. It's reproduceable with ffmpeg, and I've already
>> identified the commit.
>> the H.264 loop filter causes reliable crashes for interlaced streams.
>> This is unfortunately not reproduceable in ffmpeg. A fix/workaround
>> exist but I'm not sure if it is correct.
>> Janne
> I have not tried 1080i H.264.  I have been avoiding it because of all
> the segfaults.  I will try to remember to give that a shot tonight
> with the new code, to see if it is improved.

Even with this patch applied, trying to watch 1080i HD-PVR generated
h.264 material causes mythfrontend to crash, right after:

2008-09-17 18:46:35.049 [h264 @ 0xb7375180]Cannot parallelize
deblocking type 1, decoding such frames in sequential order

A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?

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