[mythtv-users] No sound after channel change with Pinnacle PCTV USB2 tuner
Mark Lord
mythtv at rtr.ca
Sat Feb 4 04:17:12 UTC 2012
On 12-02-03 12:25 PM, Raymond Wagner wrote:
> On 2/3/2012 11:21, Mark Lord wrote:
>> On 12-02-03 10:30 AM, Devin Heitmueller wrote:
>>> On Fri, Feb 3, 2012 at 10:20 AM, Mark Lord<mythtv at rtr.ca> wrote:
>>>> On 11-11-22 07:28 PM, José Silva wrote:
>>>>> Nonetheless, something still puzzles me: the MPEG chip encodes the
>>>>> video, right?
>>>> Audio _and_ video. It encodes both, combines them into a single mpeg stream,
>>>> and all that mythtv software needs to do is save the stream to a file.
>> As far as analog tuners with built-in mpeg encoder chips,
>> I know of only one: Plextor ConvertX PX-TV402U.
>
> Technically, that specific device only encodes the video, leaving MythTV
> to independently capture, compress, and multiplex in the audio.
No, that specific device has a full NTSC tuner,
and a full MPEG audio+video encoder chip.
It spits out a fully encoded mpeg file to /dev/videoX.
Cheers
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