demux/mux stalling

[Babineau, Denis-2]

Hi

 

I’m experimenting with gst-launch and different pipelines trying to get a better understanding of the flow. Ultimately I’d want to be able to mux multiple streams from different sources (files). However I’m having problems just demuxing and remuxing a single file.

 

The following works, however I have to decode and re-encode which I don’t want to do:

 

gst-launch -v filesrc location=test.ogg ! oggdemux name=demux demux. ! queue ! theoradec ! theoraenc ! queue ! mux. demux. ! queue ! vorbisdec ! vorbisenc ! queue ! mux. oggmux name=mux ! filesink location=new.ogg

 

The following doesn’t work, everything looks ok, it goes to PLAYING but it just stalls there and I get an empty file:

 

gst-launch -v filesrc location=test.ogg ! oggdemux name=demux demux. ! "video/x-theora" ! queue ! mux. demux. ! "audio/x-vorbis" ! queue ! mux. oggmux name=mux ! filesink location=new.ogg

 

I tried different permutations, with queues, without queues but I can’t figure out why it’s stalling ..

 

Thanks

 

Denis

 

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[Andrés González]

Hello,

On 16/02/11 15:05, Babineau, Denis wrote:

Hi

 

I’m experimenting with gst-launch and different pipelines trying to get a better understanding of the flow. Ultimately I’d want to be able to mux multiple streams from different sources (files). However I’m having problems just demuxing and remuxing a single file.

 

The following works, however I have to decode and re-encode which I don’t want to do:

 

gst-launch -v filesrc location=test.ogg ! oggdemux name=demux demux. ! queue ! theoradec ! theoraenc ! queue ! mux. demux. ! queue ! vorbisdec ! vorbisenc ! queue ! mux. oggmux name=mux ! filesink location=new.ogg

 

The following doesn’t work, everything looks ok, it goes to PLAYING but it just stalls there and I get an empty file:

 

gst-launch -v filesrc location=test.ogg ! oggdemux name=demux demux. ! "video/x-theora" ! queue ! mux. demux. ! "audio/x-vorbis" ! queue ! mux. oggmux name=mux ! filesink location=new.ogg

 

I tried different permutations, with queues, without queues but I can’t figure out why it’s stalling ..

 

Thanks

 

Denis

I had a similar problem some time ago (in a python program, not with gst-launch). The solution was using a "multiqueue".

Here is the thread (you can see the python programs in the files attached to the posts):

http://gstreamer-devel.966125.n4.nabble.com/Simple-ogg-pipeline-doesn-t-work-td3076883.html

Documentation:

http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-plugins/html/gstreamer-plugins-multiqueue.html

Hope that helps,

Andrés

 

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