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

[PERET Pierre-Hugues]

Didn't tried with ffmpeg's amr_wb.
trying with http allways make my operator says wrong url, putting the full 
path or not.

I talked on irc with some guys, and it seems that it's not very possible to 
do what i want , and someone oriented me to helix mobile server and mobile 
encoder, but it's far too expensive....

as i want to take an already running stream and transcode it to 3gp , i 
think i cannot do that with opensource or free software.
I noticed that DSS is not able to stream mp4+aac to mobile phone -> nokia 
6630 , sound is not working, even with the sample which comes with the 
server. Making aac streaming working on the mobile would be the 
solution.(amr is not my preference).

if you know a streaming server that can do that.. pls tell me.
maybe tomorrow i will try amr_wb . i will keep you informed.

NB : 3gp or mp4 generated by vlc doesn't play on the mobile phone on local 
playback (possibly beacause of the lack of hinted tracks)


At 09:59 10/12/2005 -0800, Torben Knerr wrote:
>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>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 
><<mailto:ph.peret at free.fr>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/>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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