On 2016-06-11, Grant Edwards <grant.b.edwa...@gmail.com> wrote: > I've got a handful of mp4 video clips (a minute or two each). All I > want to do is > > 1) Concatenate them with fade-in at beginning of each clip and fade-out > at the end of each clip. > > 2) Superimpose a title at the beginning for a few seconds. > > Can anybody recomment a simple video editor? > > > So far I've tried Openshot and Cinelerra and niether is usable even > for my trivial task. [...] > I may try Cinelerra 2014, but I'm not optimistic -- Cinelerra is known > for it's slow rate of change.
I tried the 2014 (~amd64) version of Cinelerra, and it still doesn't recognize the AAC audio in the MP4 files my Moto G phone produces. I also tried the downloaded binary of Shotcut, but it it requires old versions of libraries and wouldn't run. So, I tried building it using the shotcut-9999 ebuild and the mlt-9999 ebuild from https://gpo.zugaina.org/media-video/shotcut https://gpo.zugaina.org/media-libs/mlt The git version of MLT installed fine, but shotcut failed to compile: cd src/ && ( test -e Makefile || /usr/lib64/qt5/bin/qmake /var/tmp/portage/media-video/shotcut-9999/work/shotcut-9999/src/src.pro 'PREFIX={D}/usr/' -o Makefile ) && make -f Makefile Project ERROR: Unknown module(s) in QT: websockets Makefile:95: recipe for target 'sub-src-make_first' failed I could probably figure out what's wrong and fix it, but... Meanwhile, I was experimenting with the "melt" command-line video editor that's included in the MLT library. https://mltframework.org/twiki/bin/view/MLT/MltMelt https://www.youtube.com/playlist?list=PLcUid3OP_4OWC-GJ6KfHK7dIK_yRKKn0e It's pretty cool, if somewhat cryptic. The documentation is a little scarce, and what exists is somewhat hidden from Google by the use of a common English word as the program name. But, the developer was kind enough to offer a couple hints on the mailing list, and it did a great job. Using the x264 codec it produce an output file that was 1/3 the size of that produce by Openshot and the improvement in video quality over Openshot was Yuge(tm)! I cranked up the x264 bitrate some (filesize is now a little over half of that produced by Openshot), and the video quality is great -- it's indiscernible from the input files which are almost twice as large. The interesting thing is that Openshot and melt both use the same MLT backend, so Openshot _should_ be able to generate the exact same output -- assuming it exposes all the required codec selections and settings. -- Grant Edwards grant.b.edwards Yow! I have a TINY BOWL in at my HEAD gmail.com
