GES samples/tests?

Fri Sep 4 04:35:40 PDT 2015

Hello Justin,

The in point is the time in the source clip where to start outputing
data, for operation it should change nothing to set it or not (better
not set it)[0].

You should never have the TextOverlayClip in the same layer as the
other clips (as it is an operation, for it to be taken into account it
should be in a layer with higher priority (lower number)).

Also you might want to use a simple GES.TextOverlay and add it
directly to a source clip.

Regards,

Thibault Saunier

[0] http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-editing-services/html/GESTimelineElement.html#ges-timeline-element-set-inpoint

On Fri, Sep 4, 2015 at 10:48 AM, Justin J. Kim
<justin.joy.9to5 at gmail.com> wrote:
> Hello,
>
> I am also trying to write GES example, but few things are not clear for me.
>
> Here's my sample code.
>
> http://pastebin.com/PxgYwVfv
>
> if i comment out line 59, 60, I can see a video with text overlay.
> but, this script causes an error as it is.
>
> GstMessageError, gerror=(GError)NULL, debug=(string)"qtdemux.c\(5304\):\
> gst_qtdemux_loop\ \(\):\
> /GESPipeline:gespipeline0/GESTimeline:gestimeline0/GESVideoTrack:gesvideotrack0/NleComposition:video_nlecomposition0/GstBin:current-bin/NleSource:nlesource2/GstBin:videosrcbin/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin3/GstQTDemux:qtdemux1:\012streaming\
> stopped\,\ reason\ not-linked";
>
> Could you advise me?
>
>
> And one more question
>
> At line 53, it was commented out, but if I set in-point as zero, GES
> pipeline is stalled.
> What "in-point" exactly is?
>
> Thanks,
> Justin
>
>
> On Wed, Sep 2, 2015 at 11:11 PM, Thibault Saunier <tsaunier at gnome.org>
> wrote:
>>
>> > I've read the GESAsset documentation a few times. Even so I believed
>> > (incorrectly) that I should add Clips instead of assets. There wasn't really
>> > a good question there, just some stumbling trying to comprehend the API.
>>
>> You can do both, I think it is simpler to use assets in many cases (so
>> you can 'introspect' the elements before using them).
>>
>> > Setting the auto-transition to true worked great. Can I change the type
>> > of transition?
>>
>> Sure, you should just retrieve the transition and set properties on it.
>>
>> Regards,
>>
>> Thibault Saunier
>>
>> On Wed, Sep 2, 2015 at 2:40 PM, Kovamees, Carl <ckovamees at novetta.com>
>> wrote:
>> > Thanks again for taking the time to explain.
>> >
>> > I've read the GESAsset documentation a few times. Even so I believed
>> > (incorrectly) that I should add Clips instead of assets. There wasn't
>> > really
>> > a good question there, just some stumbling trying to comprehend the API.
>> >
>> > Setting the auto-transition to true worked great. Can I change the type
>> > of
>> > transition?
>> >
>> >
>> > /Carl
>> >
>> > On Mon, Aug 31, 2015 at 1:09 PM, Thibault Saunier <tsaunier at gnome.org>
>> > wrote:
>> >>
>> >> Hello Carl,
>> >>
>> >> Did you have a look at the GESAsset documentation:
>> >>
>> >>
>> >> http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer-editing-services/html/GESAsset.html
>> >> it contains quite abit of information about the concept and what
>> >> problem it solves.
>> >>
>> >> Most of the time you should just enable GESTimeline::auto-transition
>> >> if you want to have transition in your timeline (instead of doing it
>> >> by hand, and probably handle it wrong).
>> >>
>> >> I am not sure what you question is in that last mail? :)
>> >>
>> >> Regards,
>> >>
>> >> Thibault
>> >>
>> >> On Mon, Aug 31, 2015 at 5:51 PM, Kovamees, Carl <ckovamees at novetta.com>
>> >> wrote:
>> >> > Thanks Thibault,
>> >> >
>> >> > I thought layers consisted of clips. Then I ran into assets and was
>> >> > trying
>> >> > to understand the concept a little more. It seems like instead of
>> >> > adding
>> >> > clips to the timeline, the samples I see now adds assets. Does it
>> >> > matter
>> >> > which?
>> >> >
>> >> > This is a part of a what I have working, but I haven't really seen
>> >> > asset
>> >> > talked about to any extent.
>> >> >
>> >> > ges_layer_add_asset (layer,
>> >> > GES_ASSET(ges_uri_clip_asset_request_sync(uri,
>> >> > NULL)), 0, 0 * GST_SECOND, 6 * GST_SECOND, GES_TRACK_TYPE_UNKNOWN);
>> >> > g_free (uri);
>> >> >
>> >> > GESVideoTransition * transition = ges_video_transition_new();
>> >> > GESAsset * transition =
>> >> > GES_ASSET(ges_asset_request(GES_TYPE_TRANSITION,
>> >> > "crossfade", NULL));
>> >> > ges_layer_add_asset (layer, GES_ASSET(transition), 4 * GST_SECOND, 0,
>> >> > 2
>> >> > *
>> >> > GST_SECOND, GES_TRACK_TYPE_UNKNOWN);
>> >> >
>> >> > ges_layer_add_asset (layer,
>> >> > GES_ASSET(ges_uri_clip_asset_request_sync(uri2,
>> >> > NULL)), 5 * GST_SECOND, 0, 5 * GST_SECOND, GES_TRACK_TYPE_UNKNOWN);
>> >> > g_free (uri2);
>> >> >
>> >> >
>> >> > /Carl
>> >> >
>> >> > On Thu, Aug 27, 2015 at 5:19 PM, Thibault Saunier
>> >> > <tsaunier at gnome.org>
>> >> > wrote:
>> >> >>
>> >> >> Hello Carl,
>> >> >>
>> >> >> The tests are not outdated but are not really good examples of how
>> >> >> to
>> >> >> use the API.
>> >> >>
>> >> >> You can have a look at the ges-launch application but it is a bit
>> >> >> big/complex these days.
>> >> >>
>> >> >> The examples are outdated, we should really update them.
>> >> >>
>> >> >> You can also have a look at little scripts such as
>> >> >>
>> >> >>
>> >> >>
>> >> >> http://mathieuduponchelle.github.io/coding/2013/06/08/Fun-with-videomixer.html
>> >> >> which might be helpful to understand.
>> >> >>
>> >> >> Otherwize just ask any question you have :)
>> >> >>
>> >> >> Regards,
>> >> >>
>> >> >> Thibault Saunier
>> >> >>
>> >> >> On Thu, Aug 27, 2015 at 10:42 PM, Carl Kovamees
>> >> >> <ckovamees at novetta.com>
>> >> >> wrote:
>> >> >> > What's the best place for GES samples/tests to learn from? I
>> >> >> > looked
>> >> >> > in
>> >> >> > gstreamer/gst-editing-services/tests and it seems a little
>> >> >> > outdated.
>> >> >> >
>> >> >> > /Carl
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> > --
>> >> >> > View this message in context:
>> >> >> >
>> >> >> >
>> >> >> > http://gstreamer-devel.966125.n4.nabble.com/GES-samples-tests-tp4673376.html
>> >> >> > Sent from the GStreamer-devel mailing list archive at Nabble.com.
>> >> >> > _______________________________________________
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