[Asterisk-video] app_mp4 fixed video playback

[Klaus Darilion]

Olle E Johansson schrieb:
> 31 aug 2007 kl. 09.18 skrev Klaus Darilion:
> 
>> btw: how is the format for AMR inside ast_frame?
>>
>> like in RTP:
>>    1 byte CMR + x bytes ToC (frame type) + AMR payloads
>>
>> or like in AMR file:
>>    1 byte header (frame type) + AMR frame
>>
>> or something completely different?
>>
>> IMO this should be defined and written down somewhere.
>>
>>
> Well, the issue here is licensing really. We already have a GSM frame.
> I think it should be ok to handle AMR frames and maybe have subframes
> for each type. One issue then will be that there can be negotiation  
> within
> the stream so we might end up with different ends of the conversation  
> negotiating
> different codecs that we can't support...
> 
> i don't know how far down the AMR decoding ladder we can walk without
> being on thin ice license-wise. I might be far too cautious.

Does anybody know how far we can dig into a AMR packet without paying 
license fees?

> 
> I would like a patch for AMR pass through and accepting old GSM
> as an AMR subtype.

What is the benefit of having GSM as subtype of AMR? I think it is 
easier to have them separate - at least for pass through.

regards
klaus

> 
> /O
> 
> 
> 
> _______________________________________________
> --Bandwidth and Colocation Provided by http://www.api-digital.com--
> 
> asterisk-video mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-video