[linux-dvb] How to decode PAL or NTSC coded Transport streams

[Marcus Metzler <mocm@metzlerbros.de>]

E.V.Sakthivel writes:
 > [1  <text/plain; iso-8859-1 (quoted-printable)>]
 > 
 > 
 > 
 > 
 > Hi All,
 > 
 > We have  designined a satellite receiver for DVB -S reception. We were able to decode the transport streams and view the Video in PAL format.
 > 
 > I like to know how we can understand whether the incoming stream is PAL or NTSC. If demux we were forcing it to PAL and on video encoder also we were forcing it to PAL.
 > 
 > My intension was to decode the incoming transport stream (PAL?NTSC) and encode it back in the same format (PAL/NTSC).
 > 
 > Please reply me ASAP.
 > 
 > 

You have to read the look at the framerate in the sequence header of
the video elementary stream. There was a good link mentioned here
before (http://www.mpucoder.com/DVD/mpeghdrs.html) that gives you
some imformation about the mpeg headers. Have a look at the
dvb-mpegtools (http://www.metzlerbros.org/dvb/index.html) in
transform.c there is a function get_vinfo which fills in a VideoInfo
structure that includes the TV format.

Marcus

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| Dr. Marcus O.C. Metzler        |                                   |
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| mocm@metzlerbros.de            | http://www.metzlerbros.de/        |
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