[vlc-devel] Re: RFC3016 (LATM) streaming

PERET Pierre-Hugues ph.peret at free.fr
Wed Mar 15 15:51:17 CET 2006


The log posted were for transcoding to mp4a (2 or 1 channel is the same no 
transcoding possible).
trying on windows doesn't allow me to transcode from 2 to 1 channel.

At 15:46 15/03/2006 +0100, you wrote:
>thanks for your quick answer.
>i'm running into trouble with transcoding audio from 2 to 1 channel, and 
>it seems that 2 channels audio doesn't stream to mobiles.
>here is the log of the error msg :
>[00000319] mpeg_audio packetizer debug: MPGA channels:2 samplerate:44100 
>bitrate:96
>[00000281] main stream output debug: adding a new input
>[00000282] stream_out_transcode private debug: creating audio transcoding 
>from fcc=`mpga' to fcc=`mp4a'
>[00000337] main decoder debug: looking for decoder module: 23 candidates
>[00000337] main decoder debug: using decoder module "mpeg_audio"
>[00000338] main encoder debug: looking for encoder module: 8 candidates
>[00000338] ffmpeg encoder debug: libavcodec already initialized
>[00000338] ffmpeg encoder error: cannot find encoder MPEG AAC Audio
>[00000282] stream_out_transcode private error: cannot find encoder
>[00000337] main decoder debug: removing module "mpeg_audio"
>[00000282] stream_out_transcode private error: cannot create audio chain
>[00000319] main packetizer error: cannot create packetizer output (mpga)
>
>source is an mpeg4 video mpeg audio stream, the error is the same with any 
>other audio codec as source.
>VLC install is newest nightly on debian.
>
>anyone can help ?
>PS : i have a sample aac audio  file that streams correctly on my mobile 
>(which was not the case before your patch).
>
>thanx
>
>At 16:01 15/03/2006 +0200, you wrote:
>>On Wed, Mar 15, 2006 at 02:28:14PM +0100, PERET Pierre-Hugues wrote:
>>PPH> Hello,
>>PPH> Great news !
>>PPH> Could you post the command line you use to stream to cell phones , and
>>PPH> which sample video+audio you use ?
>>vlc -I dummy -vvv  udp://@224.3.3.4 --sout 
>>"#transcode{vb=64,ab=24,channels=1,vcodec=H263,acodec=mp4a,width=176,height=144,samplerate=22050,fps=15}:rtp{dst=224.3.5.3,sdp=test.sdp}"
>>PPH> Do you use vlc+DSS(as reflector) ?
>>I use vlc as source for other streaming server.
>>
>>
>>
>>--
>>Regards,
>>Alex Antropoff
>>
>>--
>>This is the vlc-devel mailing-list, see http://www.videolan.org/vlc/
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>
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