Hi!
Ugh... this was supposed to go to the list as well.
Sven Over wrote:
> Am Friday 25 August 2006 14:12 schrieb Michael Riepe:
>
>>There's even more to consider. Video format changes, for example.
>
>
> Like changes from 4:3 to 16:9 aspect ratio.
Exactly.
>>Or subtitles.
>
>
> Never seen them on DVB. Are they the same format as on DVD?
I'm not sure how it's done.
[...]
>> - stream directory
>
>
> What should that be?
An index of the available PES - including starting position and
timestamp, length, content type, avg/max bitrate and so on.
>>Not so easy. How can you tell the difference between a missing
>>presentation unit (transport error) and a broken timestamp in a
>>contiguous stream?
>
>
> It's maybe not trivial. What I mean, is that the indexer should be able to
> read real-world transport streams (perfectly conformant ones as well as
> slightly flakey ones, as German ARD) and should calculate the correct
> presentation time for each presentation unit. These goes into the index, and
> these should go into the exported video files.
Hmm... maybe the lower (PS/TS) layers could indicate if the stream is
contiguous, and temporarily disable the correction algorithm if it
isn't. Alternatively, the algorithm could use a heuristic approach:
correct only small errors ("PTS jitter") and ignore other defects.
Otherwise, transport errors might cause A/V synchronization issues.
--
Michael "Tired" Riepe <[EMAIL PROTECTED]>
X-Tired: Each morning I get up I die a little
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