Public bug reported:
I installed Kino 1.3.4 on Ubuntu 18.04 and 20.04. It runs, import, etc.
all normally. However, when a transition is created, the preview is
perfect but its stored version (the temporary .dv file) is a still video
of a single frame. The same worked on previous versions of Ubuntu.
I dug a bit and found some info, such as: it only shows the first frame
of the next sequence; the issue affects saving to file, even when a
transition is applied to color fading; the length is correct; etc. I
have rebuilt kino 1.3.4 from the sources and it just worked.
Here came the second issue: mjpeg exporting was not working, with ffmpeg
quitting with:
> Unrecognized option 'ildct'.
> Error splitting the argument list: Option not found
I tried to replicate the pipe options given to ffmpeg to understand
where was the issue. 'ildct' "recently" (tm) became a flag rather than a
standalone option, so I assumed that the obsolete option was used to
ffmpeg command line; but this was not the case, because in
ffmpeg_utils.sh the right version of the flags (-ildct or -flags +ildct)
is used depending on the version of ffmpeg.
And how is this version checked? Grepping "flags" and other keywords
from "ffmpeg_help=`ffmpeg -h 2>&1`. And *that* has changed in the years
for ffmpeg. Now ffmpeg reports the complete set of options only with
"full". I changed that to
ffmpeg_help=`ffmpeg -h full 2>&1`
and exporting started working again. Note: you might need to make &&
sudo make install again after this change.
I know kino is not maintained anymore, but it might still be useful to
some and it has a unique feature: it's very nice when you need to fade
across many small and big samples, which are shown in a list and it is
easy to remove a single one. More powerful non-linear editors rely on a
timeline with sizes proportional to the clip lengths, resulting in very
hard browsing and zooming if you need to work on simple transitions
between clips with very different sizes. Plus, removing a clip in a
timeline can be really painful (e.g. need to shift tracks, can't select
transitions because they are tiny with respect to clips, etc.)
So I do not hope that this will be fixed anytime soon, but I hope that
this information will help other kino enthusiasts like me.
** Affects: kino (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1931022
Title:
[SOLVED] Kino transitions and export not working
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