[linux-dvb] hdtv scanning
m.muellner at gmx.at
Sun Nov 5 18:57:24 CET 2006
Klaus Schmidinger schrieb:
> matthieu castet wrote:
>> Klaus Schmidinger wrote:
>>> matthieu castet wrote:
>>>> matthieu castet wrote:
>>>>> Does somebody know why "scan" dvb-util or vdr failed to parse
>>>>> video pid of hdtv stream ?
>>>>> Why a patch like the attached one couldn't be added ?
>>>> After some reflexion, a new category (video hd) should be created :
>>>> dvb apps using channel file need to know if it is a mpeg2 or h264
>>>> video as they already does it for audio (mp2 vs ac3).
>>> We don't need that, because there is always only *one* video track,
>>> as opposed to audio, where there can be both mpeg and ac3.
>> Yes but in order to know the video type we need the PMT.
>> But IIRC the current policy is to use the PMT only to make
>> channel.conf and then to use channel.conf.
>> So etheir you add more information in channel.conf (video encoding),
>> etheir a more sane solution (which is done by mythtv AFAIK) is to put
>> in channel.conf only tuning information + service_id + extra
>> information (name, ...) and when you swith to a channel, you use PAT
>> to discover your channel PMT pid, and you use PMT to discover media
>> (video, audio, ...) pids and types (mpeg2, h264, ...).
> I don't like that because when I switch to a channel I don't want to
> first have to parse all kinds of tables, that would slow down channel
>> The second solution is also usefull when recording channel, because
>> player will need PMT or something that describe the content of the
> Is the fact that a stream is coded in H.264 not stored on the (P)ES data?
>> PS : do you plan something for VDR ?
> Sure, once the driver supports DVB-S2 ;-)
Why wait ? there are also H264 over dvb-s :)
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