On Apr 25, 2007, at 11:58 AM, stuart wrote:

> Hi Jan
>
> Jan Vilhuber wrote:
>> Hi there!
>> I'm trying to play some HD content recorded with mythtv, and it's   
>> mpeg-ts, if I see things correctly. Based on a packet trace, I  
>> can  see mvpmc reading the file from the myth server (lots of  
>> traffic),  but the screen remains blank (green, perhaps).
>
> Same here.  It probably doesn't work as the band width is too much  
> for the MediaMVP box.  For example, I can play back 480 line  
> resolution (old shows) recorded by my MythTV box using an ATSC  
> tuner.  But I can not play back 720 or 1080 line resolution  
> programming.  Note, we have always had problems w/synchronizing  
> digital audio in mvpmc - so, even though I can play back the 480  
> line programming, we still haven't figured out the audio  
> synchronization problem.
>
>> I understand that this MAY indicate that mvpmc does not  
>> understand  the format (is mpeg-ts i.e. HD mpeg2?). I have VLC set  
>> up as a  server, and if I try to play an avi file from nfs, it  
>> goes to VLC and  has it transcode it successfully (very cool  
>> feature, that!!).
>
> This is a pain when using MythTV (or actually anything) - but  
> people have had success renaming their mpge's to .avi files.  Then,  
> mvpmc will think is can not decode the programming and will ask to  
> have it transcoded.
>

Can't mvpmc detect the type of data it is receiving from the stream  
itself? I thought mpeg files carry such identifiers (or avi for that  
matter). If so, then mvpmc could stop reading the stream, and switch  
to the vlc mechanism.

jan


> Ideally, I wish there was a way for the MythTV backend to identify  
> the capabilities of it's clients and act accordingly.  This will be  
> more true in the future as more of us turn up ATSC and QUAM MythTV  
> boxes but still have NTSC type clients.
>
>> So: How can I get mvpmc to go to VLC to transcode the HD content  
>> to  something it can display? I don't really care if the OUTPUT is  
>> HD  (which it can't be anyway.. neither the mvp nor my TV do HD   
>> natively), but I'd like to at least SEE it.
>
> You can probably search this and the other mvpmc mail list for a  
> thread on the subject.  I would think it would be worth it if your  
> set is good enough to see the difference between over the air NTSC  
> and a DVD.  Use the s-video output to reduce artifacts encountered  
> by your set trying to separate color and brightness (this goes w/o  
> saying for any video source).
>
>> Any help or suggestions? I've tried the latest firmware from   
>> yesterday (dongle.bin.mvpmc-20070424).
>> jan
>
>


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