How to make nlecomposition/nleurisource work as expected?

[Guofeng Zhang]

Thibault,

When I run the following command:
    ges-launch-1.0 --track-types=audio +clip ten.ogg inpoint=10.0 duration=2.0 start=0.0
It runs well.

But when I try to use '-o' option to render it to a file, ges-launch-1.0 is hung (not exit).
    ges-launch-1.0 --track-types=audio -o out.ogg +clip ten.ogg inpoint=10.0 duration=2.0 start=0.0

What is wrong with the above command?

Your help is appreciated.

Guofeng


On 2015/10/14 23:55, Thibault Saunier wrote:
> Hello Guofeng,
>
> gst-launch will not be able to use the NleComposition, mostly because
> the composition is responsible for building the pipeline, linking
> element together etc... but Gst pipeline parser also tried to do the
> same thing, leading to broken behaviour.
>
> You might want to have a look at ges-launch, there is some
> documentation at
> https://phabricator.freedesktop.org/w/gstreamer/gst-editing-services/ges-launch/
> but that will be moved to the GES documentation in the near future.
>
> Regards,
>
> Thibault Saunier
>
> On Wed, Oct 14, 2015 at 4:45 PM, Guofeng Zhang <guofeng.zhang at mybean.cn> wrote:
>> Hi,
>>
>> I tried to use gnonlin to play part of the audio file (start at 5s in the
>> audio file and the duration is 5s), so I use the following command:
>>
>> gst-launch-1.0 nlecomposition \( nleurisource uri=file://$PWD/ten.ogg
>> start=0 duration=5000000000 inpoint=5000000000 \) ! audioconvert ! alsasink
>>
>> I got the following output, which had the error messages listed:
>>
>> Setting pipeline to PAUSED ...
>> Pipeline is PREROLLING ...
>> (gst-launch-1.0:4619): GStreamer-CRITICAL **: gst_pad_push_event: assertion
>> 'GST_IS_PAD (pad)' failed
>> (gst-launch-1.0:4619): GStreamer-CRITICAL **: gst_object_unref: assertion
>> 'object != NULL' failed
>> Pipeline is PREROLLED ...
>> Setting pipeline to PLAYING ...
>> New clock: GstAudioSinkClock
>> Got EOS from element "pipeline0".
>> Execution ended after 0:00:16.289522903
>> Setting pipeline to PAUSED ...
>> Setting pipeline to READY ...
>> Setting pipeline to NULL ...
>> Freeing pipeline ...
>>
>> and the audio is played from the begin to the end (16s, not 5s, and not
>> start playing at 5s).
>>
>> I donot know how to fix it. Your help is appreciated.
>>
>> I use gstreamer 1.6.0 built from the source by myself, ubuntu 15.04.
>>
>> NOTE:
>>
>> if I run the following command:
>>
>>   gst-launch-1.0 uridecodebin uri=file://$PWD/ten.ogg ! audioconvert !
>> alsasink
>>
>> No failed messages output, so I think my environment is fine.
>>
>> Thanks again.
>>
>> guofeng
>>
>>
>>
>>
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>