On Sun, 28 May 2017 17:07:30 +0700
Constant Brouerius van Nidek wrote:
Since I got a dashboard camera for use in my car I
have got very long
videos which I would like to split into smaller parts. What can
opensuse offer me for such a job? And if I start editing, what are
the programs of choice?
We don't know the camera make & model or the recording format it uses.
This would be very helpful to know because it affects the complexity of
any recommendations. For example:
I've been playing with a high resolution (1080p) ~30 FPS camera that writes insanely
large files in .mov format to an internal micro-SD card. It has a built-in feature which
automatically (and seamlessly) splits the data stream into 5 minute 'chunks' as it
is recording. The files it creates in this mode are ~580 MB every five minutes. When the
micro-SD card fills up, it continues uninterrupted recording by overwriting existing
files, beginning with the oldest files first.
To productively work with these large files, I learned that it helped a
great deal to keep my "source", "target" and "system" disks
from one another to avoid device read/write contention.
I frequently used cli ffmpeg to transcode these files into .mpg / .mp4
formats - the output format was determined by my use case - to make
them much smaller and more manageable.
cli ffmpeg is also convenient for exporting (transcoding) selected
'clips' by specifying the source 'start' and 'stop' times.
Other times - again, depending upon the use case - I used cli mpgtx
("an MPeG ToolboX") to split large files down into equal sized 'chunks'
to make them easier to work.
In other words, I used a combination of tools and techniques to create
and dump 'clips' into a source directory that I could use with whatever
non-linear digital video editor I was experimenting with at the time.
As for which editor I preferreed, Cinelerra is great but it has a
fairly steep learning curve. I also liked kdenlive and openshot.
hth & regards,
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