[M4IF Technotes] Quick BIFS primer

Wesley De Neve wmdeneve bilbo.elis.rug.ac.be
Wed Nov 27 17:30:00 EST 2002


Hi Jean-Claude, all
first of all, thanks for the swift reply ;-).
On Wed, 27 Nov 2002, Jean-Claude Dufourd wrote:
> Or how to create your first BIFS scenes...
> Ten samples, complete with text, scripts, exe, media, all tested with 
> the current MPEG-4 Systems software (Osmose).
> 
> http://www.comelec.enst.fr/~dufourd/mpeg-4/Bifs_Primer/primer.html
> 
> Bug reports welcome.

I've had a first (and rather quick) look at it. I was able to compile all
sequences with BIFSEnc and MP4Enc. I've tried to play them with OSMOSE and
IM1 but this only succeeded for the scenes containing only BIFS or JPEGS.
For the other scenes a message box popped up saying "UNKNOWN DECODER
TYPE". I think this has something to do with registering the necessary
DLLs? I tried this already by doubleclicking on IM1.reg but after having
looked at the values in the reg file, it seems that some paths are not 
fully correct. I will have a look at this tomorrow.
Regarding the samples that are supposed to be compiled with MP4Tool, I 
think that some media files are missing, like cat3.{info, media} and 
audio.media? I have found back audio.media in the conformance bitstreams 
but after placing it in the streams directory, MP4Tool was still 
complaining that it couldn't find the file in question. 
Would it also be possible to put a sample online that works with a visual 
MPEG-4 elementary stream (sorry for nagging)?
I'm looking forward to your answer.
Many thanks to all who have offered help!
With kind regards,
Wesley De Neve


More information about the Mp4-tech mailing list