I'm generating an MLT file from a collection of images but there are about
20 different ways I've seen to do it. The simplest seemed to be to put all
the images in a playlist rather than dealing with multiple
tracks/multitrack. I didn't think about the transition problem until I
thought I was "done".
Yes, I can get different transitions to work using luma and gradient
images. I can set the in/out of the different luma filter sections to get
a different effect between each image. That works fine. I just thought I
could use other filters as transitions between images when I started.
So if you were going to format an MLT file for a slideshow only, how would
you do it? Right now, like I mentioned, I have:
producer1
producer2
producer3
producer4
playlist
producer1
producer2
producer3
producer4
filter1 luma
filter2 luma
filter3 luma
On Thu, Jan 8, 2015 at 1:12 PM, Dan Dennedy <d...@dennedy.org> wrote:
> On Thu, Jan 8, 2015 at 7:42 AM, Jeremy Yoder <jmyo...@gmail.com> wrote:
>
>> Looking at the list of filters it looks like "luma" is the only one that
>> will take the current and next frame as input. Is there any way to
>> accomplish the same thing with other transitions, like "composite" or
>> "affine" (maybe using the "transition" filter somehow?).
>>
>>
> Per the subject line, are you basing this question on demo/mlt_slideshow
> [1]?
>
> If so, I consider that just a cute hack with a quick dead end as it offers
> little-to-no control. To answer your question, i think the answer is "no."
> Of course, you can probably specify a gradient wipe image file to the luma
> filter to get a different type of transition. However, you are better off
> to write a tool or script that generates MLT XML from your set of images.
> Maybe you give that tool a list of images as a newline-delimited text file.
> At the very least you now have more control over image file selection and
> order. Maybe turn that text file into tab- or CSV-delimited and add a
> column that specifies whether to apply a center crop operation for that
> image. Next, add a column for the transition type. You see what I mean?
>
> [1] https://github.com/mltframework/mlt/blob/master/demo/mlt_slideshow
>
> --
> +-DRD-+
>
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