multifilesink - how to interpret values sent via bus message?

[Ralph Heinkel]

Hi Nezer,

thanks for your hint with gnonlin. Unfortunately its documentation is 
so sparse that I have no indication on how to use it. So some sample 
code would be really helpful.

What I actually want to do is to read a video/audio stream (i.e. a TV 
channel) from a DVB card and split that data stream into small junks 
of MPEG-TS files (each about 4 secs long). For each junk I need to 
know the timestamp (+/- some msecs) when that data was received from 
the DVB card, and how long that junk plays. All of this should work in 
batch mode (using python gst), using a GUI is not an option.

Any indication on how the gnonlin project could do this would be 
appreciated a lot.

Thanks and ciao ciao

Ralph

On 12/07/2011 03:38 PM, Nezer Zaidenberg wrote:
> Hi Ralph,
>
> I think what you need is non-linear editing. There is a project called
> gnonlin which is a part of gstreamer and does just that. It can cut a
> movie into multiple parts in any manner you like.
> If you are only using it for one dvd you could also check out VLMC
> (VideoLan Movie Creator) which has a nice gui for non-linear editing.
> After you do this, you get multiple movies (as the parts of the
> original), which you can query (using gstreamer for instance) for
> duration.
>
> If this still doesn't help, and you want to pursue the original
> solution, could you post your pipeline for reference?
>
> Best regards,
>     Nezer
>
> On Tue, Dec 6, 2011 at 9:00 PM, Ralph Heinkel <ralph.heinkel at web.de
> <mailto:ralph.heinkel at web.de>> wrote:
>
>     Hi,
>
>     I'm (successfully) splitting a video from a DVD into separate
>     files using 'multifilesink', by splitting at every new key frame.
>     The command I used is shown below.
>
>     What I need to do is to keep track of the produced files, and in
>     particular I'm interested to get timestamp (when the file was
>     produced) and duration of the individual files.
>     However when looking at the messages produced by multifilesink all
>     junks seem to have identical durations, offsets etc (of absurd
>     high values). Also the timestamp is just increasing in discrete
>     steps. And this is even though all junks have slightly different
>     sizes (around 10secs +/- 1).
>
>     Can anybody help? (I'm a bloody beginner with gstreamer, so please
>     help me with 'basic' explanations ;-)
>
>     Thanks a lot,
>
>     Ralph
>
>     PS: I'm using gstreamer 0.10.35 on legacy opensuse 12.1 on a 32bit
>     machine.
>
>     -------------------
>     My call:
>
>     gst-launch -m dvdreadsrc title=2 ! multifilesink next-file=2
>                location='m-%05d.ts' post-messages=true
>
>
>     The log:
>     [...]
>     Got message #24 from element "multifilesink0" (element):
>     GstMultiFileSink, filename=(string)m-00000.ts, index=(int)0,
>     timestamp=(guint64)__10000000000,
>     stream-time=(guint64)__10000000000,
>     running-time=(guint64)__10000000000,
>     duration=(guint64)__18446744073709551615,
>     offset=(guint64)__18446744073709551615,
>     offset-end=(guint64)__18446744073709551615;
>     Got message #25 from element "multifilesink0" (element):
>     GstMultiFileSink, filename=(string)m-00001.ts, index=(int)1,
>     timestamp=(guint64)__20000000000,
>     stream-time=(guint64)__20000000000,
>     running-time=(guint64)__20000000000,
>     duration=(guint64)__18446744073709551615,
>     offset=(guint64)__18446744073709551615,
>     offset-end=(guint64)__18446744073709551615;
>     Got message #26 from element "multifilesink0" (element):
>     GstMultiFileSink, filename=(string)m-00002.ts, index=(int)2,
>     timestamp=(guint64)__30000000000,
>     stream-time=(guint64)__30000000000,
>     running-time=(guint64)__30000000000,
>     duration=(guint64)__18446744073709551615,
>     offset=(guint64)__18446744073709551615,
>     offset-end=(guint64)__18446744073709551615;
>
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