On Tue, Nov 10, 2015 at 9:45 PM Tony Mobily <m...@mobily1.com> wrote:
> Hi, > > I am quite new to MLT; please accept my apologies if what I am asking is > nonsensical... > > I have 2 videos, both 1 minute long. > I would like to do the following: whenever the video_1 has a "transparent" > frame, I would like the resulting video to have the corresponding frame > (time-wise) in video_2. > > So, if video_1 starts with 5 seconds of transparency, then 30 seconds of > proper video, and then 3 seconds of transparency, I would like the result > video to have: > > * 5 seconds of video_2 > * 30 seconds of video_1 > * 3 seconds of video_2 > > Is this possible with MLT? > Yes, you must use a simple alpha-over transition such as composite, affine, frei0r.composition, or frei0r.cairoblend between 2 tracks. However, I am not sure it makes the most sense to have transparency control it. > The ideai s that there is an interview track, and we would like to somehow > "merge" them intelligently, some parts of track 1, and some parts of track > 2. > > Maybe my idea of "transparent spots" is not very functional... how would > you go about having 2 video channels, and switching from one to the other? > > How are you going to control and set the transparency? Why not just have a playlist of timed shots/cuts from each video? You can repeat or reuse the producer. Have you used a MLT GUI such as Flowblade, Shotcut, or Kdenlive? If not, you should.
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