On Tuesday 15 November 2005 03:09, Bob wrote: > Steve Adeff wrote: > > On Saturday 12 November 2005 23:41, Michael T. Dean wrote: > >>On 11/12/05 19:55, Nathan Allen Stratton wrote: > >>>On Sat, 12 Nov 2005, Michael T. Dean wrote: > >>>>Nope. ATSC (US high-definition TV) is broadcast already encoded using > >>>>the MPEG-2 system. The audio is encoded in an AC-3 stream within the > >>>>transport stream. So, it's just there. > >>> > >>>Hmm so since I setup the mp3 audio encoding on the video profiles I > >>> would trash the AC-3 stream off my hdtv card. Yet, if I dont compress > >>> audio my hdtv card audio will be AC-3, but I will suck up huge space > >>> with the 44K audio off my 2 plextor boxes. > >> > >>AIUI, those parameters (and bitrate, etc.) of the profile are not used > >>for HDTV capture cards since the stream is just dumped to disk. So, you > >>can set the audio encoding to whatever you'd like. > > > > how much CPU would it take to capture and encode video from a non-PVR > > capture card so that it can be muxed with the audio from a soundcard? I > > ask because I happen to have an older WinTV card laying around. I'd even > > be willing to accept a lossless capture format to allow for easy live TV > > with AC3, with the ability to convert to XviD later if I decided to keep > > the recording. > > > > Steve > > About a spoon full. > > But seriously, lossless compression tends to be more cpu intensive than > lossy, particularly if your aiming for respectable compression ratios, > if your not even SD content is going to take up a *lot* of space very fast. > > As for how much CPU to capture from a frame grabber look at > http://www.mythtv.org/docs/mythtv-HOWTO-3.html#ss3.1
So now I just have to see i its possible to capture a 5.1 stream? If so then its just a matter of getting MythTV to use a BTTV device for video input and the 5.1 input for audio right? Steve _______________________________________________ mythtv-users mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
