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<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff
size=2>Hai,</FONT></SPAN></DIV>
<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff size=2>I only
saw this postings now: Here are my test results and
findings:</FONT></SPAN></DIV>
<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff size=2>I
encode a satellite signal into mp4 (vcodec=mp4v acodec=mp4a) this is served via
VLC via HTTP to the second server that has vlc and darwin on it (I need to use
VLC to transport the stream via the network since DSS injection doesn't work.
The 2nd VLC receives the stream and serveses it to DSS and creates the .sdp
file. The stream is visible with QuickTime on PC and Mac but not with Real. The
stream doesn't play on my UMTS phone (SonyEricsson Z1010). </FONT></SPAN></DIV>
<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff size=2>And
now for the *strange* part....</FONT></SPAN></DIV>
<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff size=2>When I
kill the audio or use acodec=samr VLC says it cannot find the codec and streams
out video only. This stream IS visible on my mobile.</FONT></SPAN></DIV>
<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff size=2>If I
take a look at the created .sdp file it say audio format *mpeg4 generic* but
this should be *mpeg4 latm* (according to DSS)</FONT></SPAN></DIV>
<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff size=2>Turns
out either the mobile phone OR DSS wants the audio encoded in AAC HE - LATM
</FONT></SPAN></DIV>
<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff size=2>I
haven't been successfull in compiling VLC/FFMpeg with amr to test
that....</FONT></SPAN></DIV>
<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff size=2>I fear
the only way to solve this is a correct implementation of AAC HE -LATM by or in
VLC (but I'm not a programmer).</FONT></SPAN></DIV>
<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff size=2>Has
anyone ever tried to use VLC directly with a mobile or any other media server
for that matter? (catraserver i.e.)</FONT></SPAN></DIV>
<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=695052019-13122005><FONT face=Arial color=#0000ff
size=2>Steit!</FONT></SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=nl dir=ltr align=left><FONT face=Tahoma
size=2>-----Oorspronkelijk bericht-----<BR><B>Van:</B>
streaming-bounce@videolan.org [mailto:streaming-bounce@videolan.org] <B>Namens
</B>PERET Pierre-Hugues<BR><B>Verzonden:</B> dinsdag 13 december 2005
17:10<BR><B>Aan:</B> streaming@videolan.org<BR><B>Onderwerp:</B> [streaming]
Re: Streaming mp4+AAC to mobile phones<BR><BR></FONT></DIV>I give up !<BR>it's
time to pass to another thing... i cannot afford spending more time on that
.<BR>If anyone find the solution , let me know.<BR><BR><BR>At 16:36 13/12/2005
+0100, you wrote:<BR><BR>
<BLOCKQUOTE class=cite cite="" type="cite">
<BLOCKQUOTE class=cite cite="" type="cite">...because the mobile tries to
load the stream (instead of telling you that this type of stream is not
supported), right? So maybe it is an sdp issue...<BR>One thing to test if
aac is supported at all might be:<BR>1) encode a video with mp4/aac using
vlc<BR>2) hint the encoded file with mp4box and put it in DSS' streaming
dir<BR>3) access the encoded file directly without using an sdp file (e.g.
<A href="rtsp://server:port/myfile.mp4">rtsp://server:port/myfile.mp4</A>)
to see if aac sound works.<BR>==> If it does not work, i bet it's the
phone not soppurting aac. Then we are sure that there's nothing wrong with
the sdp (because it's not involved here) and it's also not the fault of
VLC's mp4a packetizer (because this one is not involved when VLC encodes
to file)<BR>==> On the other hand, if it works, then there must be
something wrong with either the sdp or the packetize_mp4a method -- or
something completely different :-/</BLOCKQUOTE><BR>I encoded a mp4/aac file,
and hinted it with mp4creator , and sound is not working. For this one, i
think its a DSS issue, because the sample_100kbit.mp4 (with aac) doesn't
work either with DSS.<BR>I'm trying to find a streaming server that can
stream mp4/aac to mobile phones.<BR><BR>
<BLOCKQUOTE class=cite cite="" type="cite">
<BLOCKQUOTE class=cite cite="" type="cite">when playing with the sdp
file,i can make my mobile phone loading my aac stream, but not playing
it (player stuck at the end of loading).</BLOCKQUOTE><BR>Unfortunately I
can't test the stream right now, because my current provider does not
allow any other traffic than http :(<BR><BR>
<BLOCKQUOTE class=cite cite="" type="cite">looking at the code of the
rtp module, i noticed amr / mpa4 sections seems inappropriate for mobile
streaming (looks normal). unfortunatly i'm not able to implement such
thing. Maybe i'm completely wrong ...<BR>correct me in this
case.</BLOCKQUOTE><BR><BR> <BR><BR>
<BLOCKQUOTE class=cite cite="" type="cite">At 17:48 12/12/2005 +0100,
you wrote:<BR>
<BLOCKQUOTE class=cite cite="" type="cite">Well,<BR>back again
!<BR>streaming amr_wb is the same as amr_nb.. it doesn't play in
QTplayer because it doesn't have the codecs, but the mobile player
seems to accept it, but no sound is coming.<BR>switch back to amr_nb
and play with the sdp file....<BR><BR><BR>At 11:55 12/12/2005 +0100,
you wrote:<BR>
<BLOCKQUOTE class=cite cite="" type="cite">I came to the same
conclusion as you .<BR>For now, i'm working on the sdp stuff which i
think is the problem. Or it might be the reflector module of DSS (in
this case i doubt i could do anything for it).<BR><BR>At 17:02
11/12/2005 -0800, Torben Knerr wrote:<BR><BR><BR>
<BLOCKQUOTE class=cite cite="" type="cite">On 12/11/05, <B>PERET
Pierre-Hugues</B> <<A
href="mailto:ph.peret@free.fr">ph.peret@free.fr</A>> wrote:<BR>
<BLOCKQUOTE class=cite cite="" type="cite">Didn't tried with
ffmpeg's amr_wb.<BR>trying with http allways make my operator
says wrong url, putting the full path or not.<BR><BR>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....<BR><BR>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.
</BLOCKQUOTE><BR>I think it is possible with vlc+dss, as soon as
the sound issue is solved. Even though the stream might not be
100% 3gp spec compliant, it worked (at least with video only).
<BR><BR>
<BLOCKQUOTE class=cite cite="" type="cite">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).</BLOCKQUOTE><BR>I think
that's not possible with the 6630, because it can not play aac
streams :( <BR>On the other hand DSS _is able_ to stream mp4+aac
(as you can see the stream with different players, such as QT), so
imho it is definitely the mobile, which is _not able_ to play
rtsp-streamed aac.<BR>But you are right, amr_nb is no solution
because it is too crappy... amr_wb might be okay, even though not
as good as aac.<BR><BR>
<BLOCKQUOTE class=cite cite="" type="cite">if you know a
streaming server that can do that.. pls tell me.<BR>maybe
tomorrow i will try amr_wb . i will keep you informed.<BR><BR>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)</BLOCKQUOTE><BR>Right, for local playback you need to hint
the files. I used mp4box for hinting and got it work to play
locally with mp4+aac and mp4+amr (both encoded with vlc). Don't
remember if it worked with h263 video too, but i guess
so.<BR><BR>Good luck with the amr_wb
stuff!</BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>