[streaming] Video Streaming over GPRS

[Emmanuel CHANSON]

I come again on this thread to explain my project.

I was able to compile the last version of VLC 1.0.4 under Fedora Core 9 with
x264 and live555 libraries (and others).

I am now able to stream a movie over internet using RTSP (and read it with a
VLC client on my computer) but I don't succeed to stream under 50 kbit/sec.
I have tested many different parameters like reducing fps, audio bitrate,
video bitrate, size of the movie without success, I got always this speed.

The flow I am sending is always stream at a bandwidth higher than 50
kbit/sec.
I would like to reduce it to reach 30 kbit/sec even 20-25.

As anyone of you any idea to tune my VLC command, or any other tips to
achieve this?
Maybe I hae to use another codec? container? stream protocol method?

I am using this command:

*# cvlc media/video-1.flv
--sout='#transcode{fps=8,vcodec=h264,vb=8,width=20,height=15,acodec=mp4a,ab=2}:rtp{mux=ts,ttl=10,name="Video",description="Video",port=1234,sdp=rtsp://
192.168.1.2:3130/str/test.sdp}'*

If I make a test where I try to stream only audio, I reach the same
bandwidth of 50 kbit/sec, that makes me thinking that RTSP protocol may not
go under this bandwidth?

The aim is to read movies from GPRS handset.

Youtube for example use RTSP and 3GP container and I am able to play youtube
movies from my mobile using GPRS connection although movies are located far
from where I live (south pacific).
I can not play my own movies from a local server (on internet) using this
config although it works with tests done in LAN (player on the mobile is
coreplayer).

So what is the difference between youtube solution and this one?

Best regards,

Emmanuel

2009/12/28 Emmanuel CHANSON <emmanuelchanson at gmail.com>

> No handset support more than GPRS (3G of course) but here the network will
> upgrade in 3G in 2 years only...
>
> BR
>
> Emmanuel
>
> 2009/12/28 Mait Mandel <Mait.Mandel at emt.ee>
>
> Hey,
>>
>> i have been using h263 + amr_nb with 50kbps (176x144 px, 10fps).
>> if you have a mobile handset that only supports GPRS, then i doubt it
>> supports any newer codecs either.
>>
>> Mait
>>
>> > -----Original Message-----
>> > From: streaming-bounces at videolan.org [mailto:streaming-
>> > bounces at videolan.org] On Behalf Of Marshall Eubanks
>> > Sent: Saturday, December 26, 2009 10:24 PM
>> > To: Emmanuel CHANSON
>> > Cc: streaming at videolan.org; matt
>> > Subject: Re: [streaming] Video Streaming over GPRS
>> >
>> > We (AmericaFree.TV) stream 3GPPx video at 96 and 160 Kbps using QTSS.
>> > This is MPEG-4 + AAC.
>> >
>> > The quality is pretty decent at 160 Kbps.
>> >
>> > Marshall
>> >
>> > On Dec 26, 2009, at 3:05 PM, Emmanuel CHANSON wrote:
>> >
>> > > Even h264 codec ?
>> > >
>> > > Emmanuel
>> > >
>> > > 2009/12/27 matt <matt at vitalit.co.uk>
>> > > Emmanuel,
>> > >
>> > > You want video over a variable (20 - 50) kilo bit link ?
>> > >
>> > > That's as slow, or slower, than dial up.
>> > >
>> > > I may be wrong, but there is no codec that I am aware of that
>> > > provides any kind of quality over such a narrow link.
>> > >
>> > > Best Regards
>> > >
>> > > Matt
>> > >
>> > >
>> > > Emmanuel CHANSON wrote:
>> > > No ideas?
>> > >
>> > > Regards,
>> > >
>> > > Emmanuel
>> > >
>> > > 2009/12/20, Emmanuel CHANSON <emmanuelchanson at gmail.com>:
>> > >
>> > > Hello,
>> > >
>> > > I would like to ask you about the possibility to stream video over
>> > > GPRS.
>> > > I made some test and the bandwidth I have can reach 50 kbit/sec,
>> > > let's say
>> > > 20 kbit/sec (average).
>> > >
>> > > Do you know if it is possible to stream video encoded with VLC using
>> > > this
>> > > bandwidth (GPRS connection on mobile)?
>> > >
>> > > If yes what do you advise to use?
>> > > - last VLC version 1.0.4 ?
>> > > - codec video: X264 ?
>> > > - codec audio: AAC ?
>> > >   - fps ? , audio bitrate & video bitrate
>> > > - encapsulation: ?
>> > > - protocole: HTTP ? (slow) maybe UDP is better or RTP/RTSP?
>> > >
>> > > If some of you has ever experimented this and can give me some clues?
>> > >
>> > > Regards,
>> > >
>> > > --
>> > > Emmanuel
>> > > @email : emmanuelchanson at gmail.com
>> > >
>> > >
>> > >
>> > >
>> > >
>> > >
>> > >
>> > >
>> > >
>> > > --
>> > > Emmanuel
>> > >
>> > > CHANSON Emmanuel
>> > > Mobile Nouvelle-Calédonie: +687.77.35.02
>> > > Mobile France: +33 (0) 6.68.03.89.56
>> > > @email : emmanuelchanson at gmail.com
>> > > _______________________________________________
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>
>
>
> --
> Emmanuel
>
> CHANSON Emmanuel
> Mobile Nouvelle-Calédonie: +687.77.35.02
> Mobile France: +33 (0) 6.68.03.89.56
> @email : emmanuelchanson at gmail.com
>



-- 
Emmanuel

CHANSON Emmanuel
Mobile Nouvelle-Calédonie: +687.77.35.02
Mobile France: +33 (0) 6.68.03.89.56
@email : emmanuelchanson at gmail.com
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