[FFmpeg-user] Streaming audio input in a lossless format

Alex Becerra alexbecerra at gmail.com
Thu Oct 4 15:40:22 CEST 2012


So Roger, how can you stream raw data either RTP or UDP?
Thanks.

Best regards,
Alex.

2012/10/3 Alex Becerra <alexbecerra at gmail.com>

> Hello,
>
> I've tried the following commands
>
> 1.- "ffmpeg -f alsa -i hw:0 -acodec libmp3lame -ar 12000 -ac 1 -f rtp
> rtp://234.5.5.5:1234"
> --> ffplay and VLC reproduce this
>
> 2.- "ffmpeg -f alsa -i hw:0 -acodec pcm_s16le -f rtp rtp://234.5.5.5:1234"
> --> ffplay and VLC answer this "[rtp @ 02930420] Unable to receive RTP
> payload type 97 without an SDP file describing it"
>
> How can I send raw data?
> How can I do it using udp?
> Is FLAC supported for streaming?
>
> Thanks.
>
> Regards,
> Alex.
>
>
> 2012/10/3 Roger Pack <rogerdpack2 at gmail.com>
>
>> > Roger, Do you have a command line for that?
>> > Now I have the "official" ffmpeg. The mp3 streaming still works, but
>> when I
>> > try to change it to wav or flac I have the following error in VLC when I
>> > try to hear the streaming.
>> > "SDP required:
>> >
>> > A description in SDP format is required to receive the RTP stream. Note
>> > that rtp:// URIs cannot work with dynamic RTP payload format (97)."
>>
>> Can ffplay receive the stream?
>> -r
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>>
>
>


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