Mapping the "gst-launch -v playbin2" information messages to discrete pipeline

[Icarus Alive]

On Mon, Sep 5, 2011 at 6:02 PM, Andreas Rödig <a.roedig at null821.de> wrote:
> Hi Icarus,
>
> use this:
>
> $ export GST_DEBUG_DUMP_DOT_DIR=/tmp
> $ gst-launch playbin uri=.....
> $ cd /tmp
> $ dot -Tpng -oout.png <filename>.dot
>
> You need package graphviz.
>

This is just sheer awsomeness... (i.e. if there is such a word), sheer joy.
Thanks for sharing this.

>
> Am 05.09.2011 14:01, schrieb Icarus Alive:
>>
>> Hi,
>>
>> Is there a known / deterministic way to convert the information
>> messages printed on screen, when one launches a pipeline like this --
>>
>> $ gst-launch -v playbin2 uri="..."
>>
>> to a pipeline with discrete elements/filter etc. ?
>>
>> I have an IPcamera output available muxed in asf format, and while I
>> can get "playbin2" to play it, I am trying to create a pipeline that
>> instead of playing it, records audio and video into 2 separate files.
>>  From the information messages printed on screen, with the successful
>> run of playbin2, I think I've got some clear good clues, I was
>> wondering if there is a deterministic way to convert the series of
>> those into a pipeline.
>>
>>
>> For example, here's a small initial part of the messages printed --
>>
>>
>> /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstTypeFindElement:typefindelement0.GstPad:src:
>> caps = video/x-ms-asf
>>
>> /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstTypeFindElement:typefind:
>> force-caps = video/x-ms-asf
>>
>> /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20:
>> sink-caps = video/x-ms-asf
>>
>> /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstTypeFindElement:typefind.GstPad:src:
>> caps = video/x-ms-asf
>>
>> /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstQueue2:queue20.GstPad:sink:
>> caps = video/x-ms-asf
>>
>> /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstQueue2:queue20.GstPad:src:
>> caps = video/x-ms-asf
>>
>> /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstTypeFindElement:typefind.GstPad:sink:
>> caps = video/x-ms-asf
>>
>> /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20.GstGhostPad:sink:
>> caps = video/x-ms-asf
>>
>> /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20.GstGhostPad:sink.GstProxyPad:proxypad0:
>> caps = video/x-ms-asf
>>
>> /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstASFDemux:asfdemux0.GstPad:sink:
>> caps = video/x-ms-asf
>>
>> /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/GstMultiQueue:multiqueue0:
>> max-size-buffers = 5
>>
>> and reading the hints I've translated it (roughly) into --
>>
>> $ gst-launch uridecodebin ! video/x-ms-asf ! queue ! asfdemux ! tee ...
>>
>> but of course, I don't have the full pipeline yet. I am happy to do
>> this manually, but is this a valid/right approach ?
>>
>> thanks,
>> Icarus
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
> --
> Andreas Rödig
>
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> Weberstr. 2
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>
> Tel.: 0821 / 800 60 -34
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> Email: a.roedig at null821.de
> Web: www.null821.de
>
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