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?
Le 28/05/2017 à 12:07, Constant Brouerius van Nidek a écrit :
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?
kdenlive
jdd
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?
Hi Constant,
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 isolated 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,
Carl
On Sunday, May 28, 2017 8:41:38 PM WIB Carl Hartung wrote:
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?
Hi Constant,
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 isolated 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,
Dear Carl,
Am still finding out the specifics of this gift but in the mean time I know that the picture format is .MOV. Have already reuced some videos to .mp4 for a smoother playing. Will now dive into editing. Thanks list for the help
On 05/28/2017 08:41 AM, Carl Hartung wrote:
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.
You have it good. The old raw uncompressed (digital-8) 'dv' format was 31 MB per-second (which I still use because my . Since it is a dashcam, the files are probably already on disk. If you want to cut from the command line, there is always ffmpeg (see: https://superuser.com/questions/458761/accurately-cut-video-files-from-comma...)
For GUI apps, see https://askubuntu.com/questions/56022/what-to-use-to-quickly-cut-audio-video
Personally, I've always like cinelerra, but making friends with it takes a little time (but for just chopping out video clips, it's pretty easy) kdenlive seems to be a popular favorite.
On Thu, 1 Jun 2017 01:26:18 -0500 David C. Rankin wrote:
The old raw uncompressed (digital-8) 'dv' format was 31 MB per-second
I've worked with 'raw' digital video data in .dv format many times since Cinelerra and kdenlive use it as their native file format. What I didn't recognize until just now was the digital-8 connection. :)
On 06/01/2017 06:46 AM, Carl Hartung wrote:
I've worked with 'raw' digital video data in .dv format many times since Cinelerra and kdenlive use it as their native file format. What I didn't recognize until just now was the digital-8 connection. :)
Oh yes... And I'm still lucky enough to have 2 of them. Fantastic 3-CCD cameras, that do 16:9 wide-screen, etc.. I'll use them until they die (or until I can't find a firewire port anymore -- which is getting damn hard to find) Luckily my new(used) laptop HP 8760w comes complete with firewire and all my servers have it.
Using 'dvgrab' from the command-line is a wonderful utility. It will locate the small silence created by pressing the 'Record-Standby' button and create separate clips of each video clip for you (with nice date-time prefix so all your clips are nicely ordered as well. Literally, I have a little script that will run and rewind the tapes, download the dv clips, create a log file of the clips with their associated date-time, then rewind the tape again at the end, eject it and wait for me to put in the new tape.
dvgrab is the swiss-army-knife for getting dv off tape over firewire :p
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?
As already mentioned, ffmpeg and kdenlive. Two comments on that:
You can use ffmpeg to split the long videos into chunks without re-encoding.
ffmpeg -i longvideo -ss <starttime> -to <endtime> -c copy partvideo
(times are hh:mm:ss). Makes handling them much easier.
For real cutting etc kdenlive, and there it helps to have it create low-res proxy versions of your movies that are used in the gui. This really makes work a LOT more comfortable. You can enable it in settings->kdenlive->Project Defaults.
Le 28/05/2017 à 17:43, Peter Suetterlin a écrit :
For real cutting etc kdenlive, and there it helps to have it create low-res proxy versions of your movies that are used in the gui. This really makes work a LOT more comfortable. You can enable it in settings->kdenlive->Project Defaults.
did you use it really? I never seen any difference, hence I guess something don't works
jdd
jdd@dodin.org wrote:
Le 28/05/2017 à 17:43, Peter Suetterlin a écrit :
For real cutting etc kdenlive, and there it helps to have it create low-res proxy versions of your movies that are used in the gui. This really makes work a LOT more comfortable. You can enable it in settings->kdenlive->Project Defaults.
did you use it really? I never seen any difference, hence I guess something don't works
I used to, haven't been doing much video the last 2-3 years :o Then it was still on my old laptop (Core Duo 2.5GHz), and the difference was well noticeable when moving around in the video...
But you have to enable it and maybe also check the radiobox for the videos if you don't enable auto-proxy or the size of the video is too small.
Maybe also on nowadays hardware with SSDs the difference is substantially less. Then again, now we have 4k (and more) videos around
Pit
Am 28.05.2017 um 12:07 schrieb Constant Brouerius van Nidek:
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?
Perhaps you should have look at “Openshot”. www.openshot.org
But this is a real video editor, so if you only want to split the files it’s a little bit to much overhead
by Peter
Am 28.05.2017 um 12:07 schrieb Constant Brouerius van Nidek:
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.
I guess some internal setup can solve this (limit the time)
jdd
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Carl Hartung -
Constant Brouerius van Nidek -
David C. Rankin -
jdd＠dodin.org -
Peter Sikorski GTL -
Peter Suetterlin -
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