[Asterisk-video] amr sound support for app_rtsp and h324m?

[Thomas Frieling]

Hi Sergio!

Thanks for the hint - I sampled down the video to a very low bit rate, which fixes the asynchronous problem.

But this doesn't fix the problem with the Nokia N95 (video quality):
About this Rene van Weert wrote:
> I've been struggling also with video quality on Nokia N95 but I can tell you this issue has been resolved with firmware V12 which has been released recently.

Have you head of this issue? Is there a way to fix it on the server side?


Thanks,
Thomas
 


Try making audio packets smaller, as some encoders try to fit as many audio
packets as possible in one rtp frame.

For the video problem also try creating a video with fewer bitrate to see if
it fix the problem.

Best regards
Sergio

----- Original Message ----- 
From: "Thomas Frieling" <thomas.frieling at viif.de>
To: "Development discussion of video media support in Asterisk"
<asterisk-video at lists.digium.com>
Sent: Friday, July 13, 2007 4:56 PM
Subject: Re: [Asterisk-video] amr sound support for app_rtsp and h324m?


I have tested several handsets:

- Sony Ericsson K800i: OK but asynchronous
- Nokia N73: OK but asynchronous
- Nokia N95: audio OK, video very bad (plays but seems to be corrupted)

I am hoping for Sergio as well... ;)

Thomas



-----Ursprüngliche Nachricht-----
Von: asterisk-video-bounces at lists.digium.com im Auftrag von Klaus Darilion
Gesendet: Fr 13.07.2007 16:29
An: Development discussion of video media support in Asterisk
Betreff: Re: [Asterisk-video] amr sound support for app_rtsp and h324m?

Ok - I will try next week ;-)

Fyi: I played around the last days and managed:
h324m_loopback
h324m_play with helix encoded video (Nokia only, not Sony Ericsson V800)

I guess this is what you achieved too. I'm sure if Sergio is back from
holiday we can make more progress.

regards
klaus



Thomas Frieling wrote:
> Hi Klaus!
>
> Try adding this to the mimeTypes-Array in app_rtsp.c:
> { AST_FORMAT_AMR, "AMR"},
>
> This works for me, but audio is still asynchronous to the video.
>
>
> Greetings,
> Thomas
>
>
>
> -----Ursprüngliche Nachricht-----
> Von: asterisk-video-bounces at lists.digium.com im Auftrag von Klaus Darilion
> Gesendet: Fr 13.07.2007 14:14
> An: Development discussion of video media support in Asterisk
> Betreff: Re: [Asterisk-video] amr sound support for app_rtsp and h324m?
>
> Hi Thomas!
>
> Did you get any further? I experience similar problems like you.
>
> regards
> klaus
>
> Thomas Frieling wrote:
>> Hi all!
>>
>> I just installed Apple's Darwin Streaming Server (OpenSource). It runs on
Linux, is pretty fast, user friendly and stable.
>>
>> Videos can be accessed with fontventa's app_rtsp-project, which works
great and seems to be a lot more stable and faster than mp4play.
>>
>> But: I haven't managed to make the amr-sound work on a 3g handset.
>>
>> Did anyone get the sound working and maybe could send me a working
mp4-file to test this here?
>>
>>
>> Thanks in advance,
>> Thomas
>>
>>
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