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DVB-T recommendation

 
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DVB-T recommendation
RedDwarfer
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#21
2007-04-08, 06:21 PM
Does anyone know what format the subtitle stream is in the broadcast DVB-T Mpeg2 transmission? If that could be extracted, what format would it be in?

I am have been looking at Subrip as it does all basically what would be needed and it does support more than just DVD's. It supports image sequences and hard subbed video files, but I do not know whether it will use the DVB-T subtitle format.

Does anyone have a small subtitle sample file that I can work with? I do not have a TV capture card so have no way to get this.
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#22
2007-04-08, 07:15 PM
Quote:Does anyone know what format the subtitle stream is in the broadcast DVB-T Mpeg2 transmission?
Its a more complex format than the subtitles used on DVDs, and wouldnt be compatible with subrip, but there maybe other tools for ripping these from a transport stream files. Its documented in the iso document called EN300743.
RedDwarfer
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#23
2007-04-08, 07:52 PM (This post was last modified: 2007-04-08, 07:59 PM by RedDwarfer.)
Subrip does support other video formats and not just VOB DVD files.

A hard subtitled video file can be opened and the subtitles recognized from the video file. Subrip can also recognize bitmaps as well. I did read that DVB subtitles are stored as bitmaps so maybe if they could be extracted from the video file they could be processed. It is whether the way the subtitles are stored is in a way that can be worked on after it is extracted from the Mpeg2 video transmission. It might need some form of conversion to be done before Subrip can work with it.

I will try and find that ISO document to find out whether that makes it any clearer. Thanks for document number. I hope it proves useful.
[edit] found the pdf very easily

ProjectX is meant to be able to extract parts of transport streams and it looks like it might be able to extract the subtitles. I could do with a small video file to test it on.

I have no video file so I cannot even experiment with it.
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