GES 1.14 -- How to achieve crossfade

[Thibault Saunier]

Then you should keyframe the alpha child property of the source :)

On Wed, Feb 20, 2019, 20:26 David Ing <ding at panopto.com> wrote:

> What if I did not want a transition between two clips "a" and "b", but
> instead I want clip "a" to transition into whatever the lower-priority
> layers had drawn?
>
> On Wed, Feb 20, 2019 at 2:12 PM David Ing <ding at panopto.com> wrote:
>
>> Thank you!
>>
>> On Wed, Feb 20, 2019 at 2:00 PM Thibault Saunier <
>> saunierthibault at gmail.com> wrote:
>>
>>>
>>>
>>> On Wed, Feb 20, 2019, 18:44 David Ing <ding at panopto.com> wrote:
>>>
>>>> Thibault, you said "Transitions happen between 2 overlapping clips".
>>>> Do you mean two clips within the same layer?
>>>>
>>>>
>>>> Are you saying that this will achieve a 2-second crossfade from a --> b?
>>>>
>>>> Layer 1:
>>>>
>>>> GESSourceClip a
>>>>
>>>> starts at 0 seconds
>>>> ends at 11 seconds
>>>>
>>>> GESTransitionClip c
>>>>
>>>> starts at 9 seconds
>>>>
>>>> ends at 11 seconds
>>>>
>>>> GESSourceClip b
>>>>
>>>> starts at 9 seconds
>>>> ends at 20 seconds
>>>>
>>>>
>>> That is correct yes :)
>>>
>>>>
>>>> On Wed, Feb 20, 2019 at 1:37 PM Thibault Saunier <
>>>> saunierthibault at gmail.com> wrote:
>>>>
>>>>> Hello David,
>>>>>
>>>>> Transitions happen between 2 overlapping clips so you need to make
>>>>> sure clips overlap at the point where you add them.
>>>>>
>>>>> Alternatively, you can use the GESTimeline::auto-transition property
>>>>> to automatically create transitions when 2 clips overlap.
>>>>>
>>>>> Regards,
>>>>>
>>>>> Thibault
>>>>>
>>>>> On Wed, Feb 20, 2019, 17:47 David Ing <ding at panopto.com> wrote:
>>>>>
>>>>>> I am struggling to find a clean example for how to achieve a
>>>>>> crossfade.
>>>>>>
>>>>>> I have a layer which contains two clips of type GESSourceClip:
>>>>>>
>>>>>> GESSourceClip a
>>>>>>
>>>>>> starts at 0 seconds
>>>>>> ends at 9.999999999 seconds
>>>>>>
>>>>>> GESSourceClip b
>>>>>>
>>>>>> starts at 10 seconds
>>>>>> ends at 20 seconds
>>>>>>
>>>>>>
>>>>>> Now I want a 2 second crossfade from "a" to "b" ... but how?
>>>>>>
>>>>>> Do I create a GESTransitionClip and insert it into the layer between
>>>>>> "a" and "b"?
>>>>>>
>>>>>> What about the timings.  Do I keep the timings for "a" and "b"
>>>>>> unchanged, but set the transition clip as follows?
>>>>>>
>>>>>>    - starts at 9 seconds
>>>>>>    - ends at 11 seconds
>>>>>>
>>>>>> Is it okay for the GESTransitionClip to overlap with GESSourceClip
>>>>>> with respect to time?
>>>>>> _______________________________________________
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>>>>>
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