Aspect ratio detection

[jirim100]

Please, where is in the header of video packet information about aspect ratio? I try write my own application (only private purposes) for detecting aspect ratio in .ts file (only standard definition).

[Cypheros]

The aspect ratio information is in the sequence_header (0xB3).

aspect_ratio_information    := (Buffer[7] and $F0) shr 4;
...

Case aspect_ratio_information of
  2: FAspRa := '4/3';
  3: FAspRa := '16/9';
  4: FAspRa := '1/2.21';
end;
...

[jirim100]

Thanks for answer.

I searched this header in wrong position.

[jirim100]

Please, and from where I have to get the time of change aspect ratio, now I get the PCR time from adaptation field at the begining of ts packet. Then I create VideoRedo project file with marks but the position of this marks is not precise. I am in decoding transport stream beginner.

[bbanda]

I'm editing a file recorded on Fortec Passion Plus HD decoder and I'd like the output file to have an aspect ratio of 16:9 instead of  4:3 obtained at the time using Ts-Doctor software. BB

[Cypheros]

At the moment there is no option to change the aspect ratio. The TS-Doctor just shows the detected AR.

[Derrick]

It would be nice to have an option in TSD for patching the AR. 

@jirim100, in the meantime I'd suggest to use the very old DVDPatcher for mpeg2