[mythtv-users] [OT] Trancoding 'live'

Michael T. Dean mtdean at thirdcontact.com
Sun Dec 4 21:34:53 EST 2005

glen martin wrote:

>glen martin wrote:
>>Michael T. Dean wrote:
>>My front-end can't support HD playback, and my TV can't display it. But
>>I like the aspect ratio and extra channels (eg. 5 subchannels on PBS) of
>>>your best option for "live" transcoding from ATSC -> NTSC is plugging
>>>the S-Video/Composite out of your cable box into a PVR-x50.  If you're
>>>using OTA instead of cable, you could get a STB ATSC receiver (like
>>>-- note that I don't recommend this one as I've never used it, but
>>>it's the type of thing you would need).
>>That's an approach I hadn't considered. So for OTA use, I could get
>>something like this standalone ATSC receiver, set it for 480i output,
>>feed that into a PVR-250 through the s-video input, and use MythTV as
>>usual including pause etc. Interesting. I had a mental block on that,
>>but seems obvious once you suggest it.
>The only downside seems to be a roundtrip through analog between the
>external box and the PVR-250.
Believe it or not, it's the exact same roundtrip you get with a Digital 
Cable/Satellite STB...  Just don't tell anyone or we might have a lot of 
people starting to notice "artifacts" from the D/A -> A/D -> D/A (and 
add in an A/D before the process if the network feed to the 
cable/satellite company is analog instead of digital) process they 
didn't realize they were using.  :)


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