[MPlayer-dev-eng] udp/mpeg2-ts streaming

Nico Sabbi nsabbi at tiscali.it
Thu May 20 15:03:02 CEST 2004


Dermot McGahon wrote:

> What I am trying to do:
> -----------------------
>
> Stream over UDP from a Kasenna VOD server, and use mplayer
> as the client. The stream format is MPEG2-TS with layer 2
> audio. The development machine is a p3-700 with 384MB RAM
> and FC2 with 2.6.5 kernel and alsa. Soundcard is SBLive
> and video card is an nvidia GeForce 256. This will
> eventually move to a single board computer with ALSA and
> a Trident video chip.
>
>
> What problems am I having:
> --------------------------
>
> A/V sync for the same stream played from file is ok, but
> not when streamed. Video quality for the same stream when
> played from file is good, even at fullscreen, but not when
> streamed.
>

It's an old problem that hasn't been solved yet.
It seems that piping demux_rtp and demux_ts slows playback so much.
I suspect that there's too much memcpy() around.
How does mplayer behave if you disable Live libraries during ./configure 
and use
the embedded rtp streamer (plain udp only, no sdp and no rtsp) ?

    Nico





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