[mythtv-users] About h264

[Glenn Sommer]

by the way - I've uploaded a small recording (re-streamed from VLC)..
It can be downloaded at:
http://freeshells.ch/~glemsom/1002_20080910211629.mpg

2008/9/10 Glenn Sommer <glemsom at gmail.com>:
> I've tried those patches (even agains a SVN snapshot from today) but
> with no luck.
>
> I re-stream everything with VLC to udp - and mythtv can pick up the
> channel (I'm still unable to get mythtv to read from a http stream) -
> but playback is really choppy.
>
> I've noticed mythtv does NOT use the CPU very much - only about 5-6% -
> so the CPU is not the bottleneck.
>
> I have tried making a recording of the IPTV stream with mythtv - and
> playback inside mythtv looks like LiveTV... really choppy. I've then
> tried playing the same mpeg file in mplayer (file found in
> /mnt/store/1002_20080910210120.mpg) - and mplayer can play that file
> just fine! Audio is fully in sync - and the video is really smooth...
>
> So the input file is defently working fine - and mythtv is storing the
> file correctly to the harddisk... But mythv is unable to play back the
> file.
>
>
> 2008/9/7 Tortise <tortise at paradise.net.nz>:
>>
>> http://pkendall.homeip.net/?page_id=8 might help you?
>> Please do let us know.
>>
>> ----- Original Message -----
>> From: "Glenn Sommer" <glemsom at gmail.com>
>> To: "Discussion about mythtv" <mythtv-users at mythtv.org>
>> Sent: Sunday, August 31, 2008 7:45 AM
>> Subject: [mythtv-users] About h264
>>
>>
>> I'm trying to get mythtv 0.21-fixes to display a h264 stream as livetv
>> - but with no luck :/
>>
>> mythtv is configured to use a "Network recorder" - and is pointing to
>> a local .m3u file.
>>
>>
>> To test with I have this stream: http://212.99.225.130:8000/h264/pro7
>>
>> Putting that URL in a m3u file does not work for mythtv (I think
>> mythtv is unable to use the http protocol)?
>> Anyway - I re-stream it using VLC.
>> So my stream is on 127:0.0.1:1230 instead...
>>
>> Mythtv can pickup that stream - but cannot play it very well!
>>
>>
>> If I then use "video as timebase" the sound and video is choppy - and
>> I get there errors: WriteAudio: buffer underrun
>>
>> If I use "Enable OpenGL for vert sync" both video and sound is choppy
>> - and I get there errors: WriteAudio: buffer underrun
>>
>> If I then re-encode the video stream to mpeg2 and audio to mp3 - then
>> it works fine.
>>
>>
>> When watching the stream mythfrontend uses about 8-10% CPU power (This
>> is on a E6850) - and VLC is using about 6% when just re-streaming...
>> and about 50-60% when both transcoding and streaming.
>>
>>
>>
>> I've tested the exact same stream with VLC client and mplayer.... They
>> both play my re-streamed stream - and the http stream correct!
>>
>>
>> What could be causing this?
>>
>>
>> Kind regards
>> Glenn Sommer
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>