[streaming] Re: Streaming mp4+AAC to mobile phones

[Torben Knerr]

Wow, that was fast! It took me weeks to get amr_nb (amr) streaming work with
recompiling vlc the last time I tried it ...
In fact, I got the same results: horrible sound in qtplayer and no sound in
realplayer mobile (video was ok in both cases).
Also, I could not compile vlc with amr_wb (samr), which allows higher
samplerates, bitrates and stereo sound. I bet it's not a great experience to
listen to your mp3's in amr_nb quality ;)
Did you try to compile it with amr_wb? Maybe that's worth another try...

Regarding the http-streaming, did you enter the full url to the sdp-file (
e.g. http://myserver:port/my.sdp) or only the host:port part? And did the
http-streaming of mp4/aac work on the pc?



On 12/10/05, PERET Pierre-Hugues <ph.peret at free.fr> wrote:
>
> After hours of compiling and testing :
>
> ffmpeg with faac and amr_nb support.
> transcoding and streaming h263video or mpeg4 video with AAC
>
> -------------------------------------------------------------------------------------------------------------
> * can play with QTPlayer on windows
> * only video on realplayer symbian OS (player complains about sound is not
> readable)
>
> transcoding and streaming h263video or mpeg4 video with AMR narrow band
>
> -------------------------------------------------------------------------------------------------------------
> * can play with QTPlayer on windows with horrible sound
> * can play on Realplayer symbian OS but sound is unaudible (like volume =
> 0) (player doesn't complain about sound)
>
> Note that AMR is transcodable only with these settings : samplerate=8000 ,
> channels=1 . So you can turn into trouble for transcoding some sound format
> with 2 channels (eg wma2 ). And this makes impossible to have good sound
> using amr.
>
> Any suggests are welcome !
>
>
>
> At 09:03 10/12/2005 +0100, you wrote:
>
> Wow !!
> installed helix client on windows, and it plays video AND audio.
>
> So it IS a plaform or operator issue .
> trying now to compile ffmpeg with amr support .
>
>
> "Qui vivra verra !"
>
>
>
> At 08:40 10/12/2005 +0100, you wrote:
>
> I tried streaming mp4+aac over http, but the mobile phone doesn't
> recognize the stream , in fact it's the operator that dosen't recognize
> it,if i put http://myserver:port , my operator says "bad url" . that's too
> weird ...
> I didn't try to play the streamed mp4+aac (rtsp) with real player or helix
> player on my PC, so i'll try this to know if it's a format/hinting issue.
>
>
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