[gst-devel] flutsmux information (extended)

[lyang]

Hi Idac,

Are you trying to mux two different programs within one TS stream?

In fact I looked into a similar problem with mpegtsmux/flutsmux (they are
basically identical) a few weeks ago, and what I found is that the
capability of the muxer is not as good as expected. (If you are interested
you can have a look at http://gstreamer.freedesktop.org/wiki/MpegTsMuxTest;
there you can see that the produced TS stream is not compatible with many
contemporary players.) The main reason of this is that flutsmux/mpegtsmux is
incapable to write full-fledged PAT/PMT tables in the stream. I currently
don't have an environment to test your pipeline, but I think your problem
probably comes from the same reason.

As an advertisement, I've proposed a project aiming to enhance the TS muxer
in the Google summer of code this year, which is supposed to be finished by
the end of June or so. I hope to support your use case in my project.

Regards,
Lin



ldac wrote:
> 
>    Hi all,
> 
> 
>     I have a few questions related to the
> flutsmux/flutsdemux elements.
> 
> 
>    Firstable, which is the standard way to do streaming with the
> output
> of the "flutsmux" element? I mean, you get the output flow from
> "flutsmux", and do you directly encapsulate it into UDP packages for
> being sent through the network? Or it is normally used TCP packages, or
> any other kind of encapsulation before being sent?
> 
> 
>    Where can I find some more information/documentation about
> flutsmux/flutsdemux?
> 
> 
>    In "flutsdemux" I have seen that you have a property named
> "program-number". But, how do you mux several "programs" using
> "flutsmux"? Is there some pipeline example muxing several channels in a
> sender and then demuxing them in a receiver?
> 
> 
>     One specific question about a pipeline multiplexing
> streams. Next
> pipeline encodes 2 video and 2 audio streams into one .ts file (it
> works fine). But, how do I play either one stream or the other? 
> 
> gst-launch-0.10 \ 
>    filesrc location=video0.mp4 ! qtdemux ! h264parse ! queue !
> mux. \ 
>    filesrc location=audio0.mp3 ! mp3parse ! queue ! mux. \ 
>    filesrc location=video1.mp4 ! qtdemux ! h264parse ! queue !
> mux. \ 
>    filesrc location=inputs/audio1.mp3 ! mp3parse ! queue ! mux.
> \ 
>    flutsmux name=mux ! filesink location=test_2prog.ts 
> 
> I guess that is should be something like this, but I can play only
> video0 with audio0. 
> 
> gst-launch-0.10 filesrc location=test_2prog.ts ! flutsdemux
> program-number=1 name=demux demux. ! queue ! ffdec_h264 ! xvimagesink
> demux. ! queue ! mad ! alsasink demux. 
> 
> (changing "program-number" I always get: ERROR: from element
> /GstPipeline:pipeline0/GstFluTSDemux:demux: Could not determine type of
> stream) 
> 
> 
>    THANK YOU VERY MUCH.
> 
>    All the best.
> 
>    LD.
> 
> 
> 
> 
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