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

[PERET Pierre-Hugues]

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.


At 11:19 09/12/2005 -0800, Torben Knerr wrote:

>On 12/9/05, PERET Pierre-Hugues 
><<mailto:ph.peret at free.fr>ph.peret at free.fr> wrote:
>>As i can stream a mp4 + AAC file from vlc+DSS to QTplayer on windows, i 
>>don't know why i cannot play it on the mobile phone, maybe it's a player 
>>issue (Realplayer) .
>
>Isn't Realplayer based on the Helix DNA Client (described in the link you 
>gave)? If that is true, then only amr-wb/samr will be supported over rtsp 
>according to their description. AAC+ would be supported via HTTP 
>streaming, though. Can VLC encode AAC+?
>
>>Helix player can be recompiled with mpeg4 support (i'm not able at this 
>>time to do this). But if someone can compile helix player with mpeg4 
>>support for symbian OS, i would be glad to test it, but it think AAC 
>>cannot be streamed with mpeg4 in rtsp or http, anyone can confirm this ?
>
>I'm sure it can be streamed (as it works fine with QTPlayer etc.), but it 
>seems that Realplayer/Helix DNA Client for mobile is just not able to play 
>it, which sucks :(
>
>>if i have time, i will recompile vlc with samr support. but it will not 
>>be until next week.
>
>Btw: did you try to set up vlc to stream mp4+aac over http instead of 
>rtsp? Wondering if this would work with the mobile...
>
>>At 13:21 08/12/2005 -0800, Torben Knerr wrote:
>>
>>>that sounds interesting... is it possible to stream mp4+aac over http 
>>>with vlc?  can you relay this stream via dss and access it through an sdp file?
>>>I would be very glad to hear if you succeed in this :)
>>>
>>>Otherwise my guess is trying to recompile vlc with amr-wb (a.k.a. samr) 
>>>enabled, but I'm not sure if vlc can stream it... Maybe this would be 
>>>the better solution because of the overhead of http.
>>>
>>>Plz keep us posted,
>>>Torben
>>>
>>>
>>>On 12/8/05, PERET Pierre-Hugues 
>>><<mailto:ph.peret at free.fr>ph.peret at free.fr> wrote:
>>>>Hello again,
>>>>I fall upon a description of the realplayer for mobile phones, and it 
>>>>seems that AAC audio cannot be streamed via rtsp with mpeg4 video. AAC 
>>>>audio can be streamed in http.
>>>>go here for more info 
>>>><https://symbian.helixcommunity.org/>https://symbian.helixcommunity.org/
>>>>
>>>>
>>>>At 08:51 08/12/2005 -0800, you wrote:
>>>>>Hi,
>>>>>
>>>>>I tried that about half a year ago with the same setup (vlc+dss+sdp), 
>>>>>and I was also facing the same problem with the sound.
>>>>>What device do you have? I have a Nokia 6630. The strange thing about 
>>>>>it was, that it played mp4/aac content locally without problems -- but 
>>>>>when I tried to stream the same mp4/aac content then there was no 
>>>>>sound. Maybe it is a problem with the device not supporting aac 
>>>>>streamed over rtsp..?
>>>>>Because that did not work, I tried to stream with amr/samr audio 
>>>>>instead of aac, but it failed because vlc does not officially support 
>>>>>amr. Well, you need to compile ffmpeg with amr enabled and then 
>>>>>recompile vlc with the amr-enabled ffmpeg. That allowed me to play amr 
>>>>>files locally with vlc, but streaming amr was not supported at this time...
>>>>>
>>>>>If you get it work somehow, either with aac or amr/samr, please let me 
>>>>>know!
>>>>>@VLC team: is it by now possible to stream amr/samr with a 
>>>>>self-compiled ffmpeg lib? Did anyone succeed with that?
>>>>>
>>>>>Cheers,
>>>>>torben
>>>>>
>>>>>
>>>>>On 12/8/05, PERET Pierre-Hugues 
>>>>><<mailto:ph.peret at free.fr>ph.peret at free.fr> wrote:
>>>>>>Hello,
>>>>>>I'm trying to stream contents transcoding or not to mobile phones.
>>>>>>At the moment, i'm using VLC + DSS , but i cannot get the sound 
>>>>>>working on
>>>>>>my mobile phone.
>>>>>>The file plays fine when accessed directly through the url
>>>>>><http://??>rtsp://my.server.com:554/myfile.mp4 , but if i want to 
>>>>>>stream it with vlc +
>>>>>>DSS the mobile phone player (realplayer) doesn't load the sound. 
>>>>>>Accessing
>>>>>>the stream with QTplayer on my PC (windows) works fine.
>>>>>>Any idea about that ?
>>>>>>Someone got streaming for mobile phone (3GP) working ?
>>>>>>The goal would be to have vlc transcode a live stream and feed the DSS
>>>>>>server with a .sdp file.
>>>>>>
>>>>>>thanks
>>>>>>
>>>>>>--
>>>>>>This is the streaming mailing-list, see 
>>>>>><http://www.videolan.org/streaming/>http://www.videolan.org/streaming/
>>>>>>To unsubscribe, please read 
>>>>>><http://www.videolan.org/support/lists.html>http://www.videolan.org/support/lists.html
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