[MPlayer-users] Analyzing media streams

[Nico Sabbi]

Fredrik Johansson wrote:

>Ahh, you where fast! :)
>
>Thank you very much for your help so far. midentify was a good tip, I
>will look into that. I've tried to reply to all of you in the same
>email below. And I will probably be back ;)
>
>Regards,
>Fredrik
>
>  
>
top-posting is forbidden in mplayer lists

>>>Video (mostly):
>>>* Service method (DVB, ATSC etc)
>>>
>>>
>>>      
>>>
>>easy to add
>>    
>>
>
>easy to add how? I have a program that lets me see all the psi's. That
>allows me to identify a stream as a DVB stream. But how do I identify
>an ATSC stream? Which specfic "prints" does that leave on the mpeg ts?
>  
>
in DVB pid 17 contains a table: SDT with a well specified format,
thus if you find it and it doesn't give parsing errors the stream
is surely DVB; moreover there are also various descriptors in the PMT
and in other tables that can disambiguate the S.I.  format;
I'm pretty sure there's some mechanism similar to that in ATSC, although
I never read the PSIP specs

>
>What I mean by color system is if it's PAL or NTSC. I'm not sure how
>ATSC fits into this, is that an "extension" to NTSC? Or should ATSC be
>compaired at the same level as DVB?
>  
>

uhm, generally 24/30/60 fps are used in ATSC, while 25 and 50 fps are 
DVB-specific,
but it's just a rough approximation