[gst-devel] how to limit the duration of a pipeline in gst-launch and pyhton bindings?

[Pau Aliagas]

Sorry if this question has been asked before, I've searched the mailing list 
but I've found nothing.

I saw the excellent article from Jono Bacon (and the one in Portuguese from the 
comments), and I wanted to do something a little different, but I don't know 
whay, I cannot find any examples :(

What I want to do is an app that, given a video file in any format, can return 
a given length in the same format (same container, same codecs).

My first idea was to limit the formats, for a quick test, to 3gpp and mp4, and 
see if I could manage those, but it would be much better if the format could be 
autodetected on the fly; the output would always be limited by a start and a 
stop positions.

Before trying the python app, I tried to build the pipeline with gst-launch, 
but I do not know how to do it.

I even had a look a GNonLin -easy to install as is in Fedora Extras-, as it 
looked like it could do the job, but it is still more misterious to me than the 
other filters. I'm totally lost.

Can anybody enlighten me?

Thanks
Pau