[M4IF Technotes] Osmo4 and Envivio

[Jean-Claude Dufourd]

Dear Jim
Jim Bowen wrote:
> I have a question regarding the Osmo4 and Envivio players.
> Since both players say that they support Advanced2D graphics / scene 
> graph profiles, Why doesn`t the Osmo4 player play the content 
> downloadable from the Envivio web-site?

There are a few reasons why this could happen:
- no AAC or VTC decoders in Osmo4 (heavily used in Envivio content)
- no RTP support in Osmo4 (probably used in their video on demand content)
> Every time I try to open it in 
> Osmo4 I get a message saying "buffer too small".
> The file I tried to open was the 'Video on Demand' one on the page
> http://www.envivio.com/products/etv/content/technical.jsp
> 
> I used mp4edit to look at the object descriptors, and saw that the 
> "buffersizeDB" field is often set to zero. Does this have anything to do 
> with it??

That is another good reason.
My first reaction is that this content is non-compliant, but I would 
need to do more checking.
Best regards
JC
--
Jean-Claude Dufourd       @======================================@
ENST, Dept COMELEC             The wing, over the big rock...
46, rue Barrault          @======================================@
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