Re: Does a SMIL with mul mpegs result into 1 mp4 file eventually ?

On 28 mei 2010, at 15:48, Datta321 wrote:

> Does a SMIL file having multiple mpeg-4 files being played =
sequentially or in parallel, eventually get converted into 1 mp4 file =
during playback ? Given below is one such SMIL file, which plays 2 video =
clips in parallel, when played in a media player. It has been observed =
that while using IBMToolkitForMpeg420061204 tool the following =
conversions resulted SMIL -> XMT-0 ->(using XMTBatch.exe) .mp4 -> (using =
MP4BOX tool) BIFS (Had 2 streams for audio and video, 1 for each clip.) =
It this always true and takes place internally, when a SMIL file is =
being played by media players ?
> Regards, (Dattaprassanna M. Singbal)=20
> View this message in context: Does a SMIL with mul mpegs result into 1 =
mp4 file eventually ?
> Sent from the w3.org - www-smil mailing list archive at Nabble.com.

If you include XMT-O in MP4 you can convert quite a few SMIL =
presentations into MP4. I don't think the two functionalities match =
100%, but there's quite a bit of overlap.
But note that XMT-O/BIFS support in mp4 players is something you hardly =
ever see: it may be that the format is has even fewer implementations =
than SMIL.

The SMIL players that I'm familiar with all turn the SMIL document into =
some sort of a graph and then execute that graph. This is definitely =
true for Ambulant and GRiNS (that I've helped develop) but also for the =
other players for which I've seen the code.
--
Jack Jansen, <[email protected]>, http://www.cwi.nl/~jack
If I can't dance I don't want to be part of your revolution -- Emma =
Goldman