[mythtv-users] SDI with embedded audio and MythTV

Matt Christy mchristy at mindtv.org
Sat Feb 21 01:27:53 UTC 2009




>-----Original Message-----
>From: mythtv-users-bounces at mythtv.org on behalf of Brian Wood
>Sent: Fri 2/20/2009 1:38 PM
>To: Discussion about mythtv
>Subject: Re: [mythtv-users] SDI with embedded audio and MythTV
>>
>> SDI is uncompressed audio/video. The idea was to have either the
> >harwdare encoder or the software encoder encode the signal as it's
> >recording. I guess I assumed that if I was able to get an SDI signal
> >into the box (by using a card that can take SDI in), MythTV would take
> >the uncompressed audio/video and make and MPEG-2 files. This is
> >assumption wrong? :) (I'm fairly new to this.. so excuse my ignorance).
>
>Myth can use some uncompressed sources, like the cheap "frame grabber" cards, 
>and encode it. I believe that RTJpeg and MPEG4 are the only options for 
>Myth's software encoding. You would have to transcode the result to get 
>MPEG2.


Hm.. this isn't so much a problem because we have Episode Engine on one of our servers that does transcoding to MPEG-2 based on a drop folder. I could set a cron job to copy the captuers over to the share for the transcoding, and have it spit out the MPEG-2 files... could work.

Thanks!

-M
But I don't think Myth can encode an SDI signal, nor am I aware of a good way 
to get an SDI stream into a Myth box.

-- 
beww
beww at beww.org
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