Openshot-qt: Crash when trasitioning in preview mode

[ruffieuxh]

Describe the bug
I today reviewed my entire video and went through many transitions between track 0 and 1. When the first transition between track 0 and 2 came up, it stopped and then crashed.

System Details (please complete the following information):

• Operating System / Distro: Ubuntu 16.04
• OpenShot Version: 2.4.2-rc4

To Reproduce
Steps to reproduce the behavior:

1. Preview a video with 3 tracks
2. Run through a transition from track 0 to track 2

Expected behavior
No crash during any transition

Screenshots
None

Logs
Attached
libopenshot.log
openshot-qt.log

[ruffieuxh]

Another example for the crash
libopenshot.log
openshot-qt.log

[peanutbutterandcrackers]

How exactly are you applying the transitions, good sir? Could you please attach a screenshot? That should help us understand this better.

In OpenShot, transitions are applied between clips in the same track, and not between tracks. That is why I am asking for the screenshot.

[ruffieuxh]

Hi,

I am clearly doing both within the track and between tracks. And yes, it mostly crashes between tracks.

How would I then do a nice transition between tracks? I think I got the idea from you introduction videos. :-)

Please find attached a screenshot requested.

[peanutbutterandcrackers]

Hmm... I see. It seems you have put videos that you want to show in lower tracks. Which is not how OpenShot works. We should put videos in the upper tracks... It's like stacking a bunch of see-through pages on top of each other.

Please go through this guide to go from zero to hero in OpenShot. Maybe then you'll see what you can do to fix it. Hope that helps! :+1:

[DylanC]

@ruffieuxh Can you try v2.4.2 and let us know if you have any success?

[ruffieuxh]

Ran the exact same video in preview mode over 50mins including several dozens of transitions and it did not crash once, despite I ran heavy number crunching in parallel (by intention). Well done!!

[peanutbutterandcrackers]

Awesome! Closing this as resolved!