how to turn my computer into a TV
dieterbsd at engineer.com
Fri Jun 22 15:27:38 UTC 2012
>> As long as there remain some NTSC broadcasts, there might be some
>> that you wish to watch. That's why I wrote:
> Yes, technically there are still some that exist, for now. However,
> their death certificate is signed and they're so few that it's not
> worth mentioning.
If you don't think NTSC is worth mentioning, why do you keep posting
the same incorrect statements over and over again?
>>> You absolutely do NOT have to reencode a stream
>> I did not say anything about RE-encoding anything. Only about
>> encoding/compressing the high bandwidth datastream the tuner
>> generates from NTSC. And to be clear, this only applies to
>> NTSC, not to ATSC.
> NTSC streams are not broadcast raw. What do you call encoding data
> that's already encoded if you don't think it's reencoding? Also, doing
> so causes degredation so unless there's a need for the user to do so,
> he's better off not wasting his time.
NTSC is not a stream of bits. NTSC is analog. The tuner converts
the NTSC analog waveform into a raw stream of bits. This raw
stream of bits is too large to conviently store on disk, so it
needs to be compressed/encoded into mpeg or similar. Some
tuners include a hardware encoder, but many do not.
>>> Tuners do NOT provide raw audio/video to the system in any case.
> While that's technically possible in _some_ cases, and assuming it's
> fully implemented and functional, I'm unaware of any software that
> actually provides raw data to the user. I suppose I should have worded
> my point differently.
The cx88wiki URL above describes the cx88 software (in ports).
For tuners without a hardware encoder, raw video/audio is the only
thing you can get from the tuner when receiving NTSC.
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