trouble with long videos

[Winston Ewert]

I have a long video. (About an hour in length). Openshot does not appreciate this.

The underlying problem appears to be that openshot is using up all of my available ram (whenever I have the project open). This results in stability and performance problems.

This happens in Version 1.2.2 (via PPA), The "trunk?" version from bzr simply hangs attempting to load the file.

What I'd like is for openshot to avoid using as much memory. Another option would be if I could somehow split my existing project into several smaller projects, but I'm not see a good way to do this.

[Winston Ewert (winstonewert)]

I've discovered that a major part of the problem is caused by the rendering of the timeline. If I comment that out the situation improves a lot. (I can't actually use the program then, but it doesn't cause as large problems)

[Winston Ewert (winstonewert)]

The trunk version crash was do an installation error on my part.

I've solved my immediate problem by writing a python script which breaks my one long movie into several smaller ones.

It looks like the entire timeline is being rendered onto the canvas. The solution would be to only render the part that is needed. I may take a look at implementing that later, right now I'm too put off by your use of tabs. :P

[Olivier Girard (eolinwen)]

Hi,

What is the type of your file (i.e. AVCHD, H264, DV,....) ?
How many memories have you ?

Thanks.

[Winston Ewert (winstonewert)]

I believe the project type is DV NTSC (I'm not sure where in the openshot interface to confirm this)

Output of free:
             total used free shared buffers cached
Mem: 896484 577104 319380 0 6308 82612
-/+ buffers/cache: 488184 408300
Swap: 2624504 983096 1641408

This is less of a concern now. I see that splitting up the project into many smaller parts is better to work with a number of ways so I won't be creating such a large project in the future.

[Olivier Girard (eolinwen)]

Strange. Me i use some project with DV PAL for some clips who have a length of more one hour. And with none problem.
After to check my memory with free to compare with ours, it seems that the problem comes from your lack of memory and not from Openshot..
            total used free shared buffers cached
Mem: 4051088 3244840 806248 0 316460 900152
-/+ buffers/cache: 2028228 2022860
Swap: 10427492 0 10427492

[Winston Ewert (winstonewert)]

My machine could use more memory. However, the length of the movie really shouldn't be increasing the memory requirements of openshot that much.

[Ricardo Perry (pirolocito)]

I have the same problem, I'm producing a video on 20 minutes from about a dozen videos, text, logo, etc,etc... and it keeps increasing ram till it runs out and then crashes.

I have 8GB of Ram......

My version is 1.4.2
OS: Debian / Mint Debian (with debian testing sources)
Achitecture: 64 bits

[Andy Finch (fincha)]

Are you using version 0.8.0 of MLT? If so, try upgrading to 0.8.2 (or downgrading) as there is a major memory leak in that version.