[streaming] Re: create 3gp compliant content with vlc

[Torben Knerr]

Dear Geoffroy,

thanks for your reply.
3gp and mp4 _playback_ are fine with vlc, but files _encoded_ with vlc
don't work for local playback on mobile device (Nokia 6630),
since vlc doesn't write a 3gp compliant file format.
I used mp4box (from gpac.sourceforge.net) to convert the vlc-generated
files into standard compliant files. after that, mp4+aac (mp4) and
h236+nosound (3gp) worked well for local playback on the 6630.

i've tried streaming a 3gp compliant and properly hinted mp4-file (9kb/s)
in gprs network over rtp/rtsp with darwin streaming server, but it 
didn't work.
rtsp communication (options, describe, setup, play..) works well,
and the server sends out rtp packets, but the realplayer on 6630
doesn't start playing...
imho neither the bitrate (9kb/s) nor the format (mp4, works for local
playback) is the problem, but i have no clue what it is....

can you send me a 3gp compliant mp4 file (video only suffices),
which is proven to be streamable through gprs network?
i would like to test if i can stream it with darwin streaming server
to my 6630 device.

or is it possible that eplus blocks rtp traffic in their gprs network
(see: 
http://lists.apple.com/archives/streaming-server-users/2005/Mar/msg00191.html)?

best regards,
torben


Geoffroy Gawin wrote:

> 3gp or mp4 are fine with VLC. On mobile device, only http and UDP 
> protocols work (livedotcom not implemented, so, no RTSP). If you are 
> using a phone with GPRS, make sure the bitrate of your file is lower 
> than 20 kb/s. to achieve this, you can for instance use ffmpeg -i 
> inputfile.any -r 5 -b 10 -s sqcif -an out.3gp
> this will mute your file. To have sound, you will need to recompile 
> ffmpeg with
> ./configure --enable-amr_nb
> make
>
> hope it will help
>
> ----- Original Message ----- From: "Torben Knerr" <ukio at gmx.de>
> To: <streaming at videolan.org>
> Sent: Thursday, April 28, 2005 9:02 PM
> Subject: [streaming] create 3gp compliant content with vlc
>

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