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i106vid: multi channel video write to a single ts #7

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@n-mam

For the sample ch10 dataset "Heim-D200-1_06042008_12332100" which has 2 videos on channel 10 and 11; individually extracting the MPEG TS using the channel switch "-c 10" and "-c 11" works fine. The resulting ts files play fine in vlc. However, if I omit the switch (implying all video channels) then the resulting (i.e. combined) ts file plays interleaved frames from both the videos.. this doesn't look like a correct ts stream write operation. Ideally, for a multi program ts file vlc would enable "Playback" --> "Program" option from where we could switch playback to individual streams. That doesn't happen with the i106vid generated ts file (when the -c switch is omitted). Here's an example of a multi program ts file which works fine with vlc: https://tsduck.io/streams/?name=usa-atsc (473.ts, the first one)

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