FAQ, Known Problems and Workarounds
There are a few known problems that have not yet been fixed for which there are some workarounds presented here.
Using the Projector on the EDL within a Master Project follow these next steps.
This solves the alpha channel not working as expected and the Master Project now looks correct.
- Open your EDL with Open EDL by using the MMB (Middle Mouse Button) on the Nested edit on its track.
- In this nested EDL, insert a new Video track below the last video track.
- Add the Alpha plugin to the new Video track for the entire length of the nested EDL.
- Change the value of the Alpha to 0.00. The Alpha Plugin may be disabled or left enabled.
- Close the EDL.
In this case, the Motion51 plugin and the Dissolve transition are not seen during the transition phase
and is stopped at the cut point between 2 edits.
The left edit's plugin should be in effect until the end of that clip and should include the
dissolve. Instead, there is a jump inside the dissolve, as if the plugin does not exist. There are
2 possible workarounds. For example, extend the Motion51 plugin to cover both clips rather than
having a separate plugin for each clip. Or another workaround is to use two tracks and have the
plugin cover the cut point and use a Fade auto instead of the Dissolve transition.
When you insert an effect on an empty track the fade fades as if it were on a black background;
it interprets the alpha as black where there is transparency, which is what produces the fade.
So the problem in the case of text is that the letters appear as a black flash briefly in the first
few frames, then goes back to transparent, then the fade starts normally with the white color.
To avoid the unwanted effect produced by the fade over black (because there is no content) leave
the fade in/out of the effect at 0 and use the fade line to perform the intended results to
avoid the problem with the alpha channel. The same problem occurs when using transparent PNG
images with fade video transitions and can be resolved in the same manner.
However this workaround can be quite tedious and complicated if you want to fade many snippets of text
and transparent PNGs on the same track, with always the same video transition filter set to the same
Just a side note here. Fade in/out in the Title plugin works fine if there is a clip/image above
the plugin in the same track without an alpha channel but not if there is no clip/image.
And the Transition effect works fine when there is a transition between two clips/images without
an alpha channel.
The CINELERRA-GG Community, 2021