I'm currently making a montage with different audio and video clips but some of the clips won't render properly.
Some of the video clips are recorded ingame using a program called shadowplay and the others are rendered in an animation program called source filmmaker. The clips that were rendered in source filmmaker won't display in the video preview and they won't show up in the final render.
However, they did show up in both the video preview and in the final render a few days ago, when i only had added a few clips on the timeline. But now that i have about 100 different clips on the timeline they wont render for some reason.
Note that if you import the same clips from source flimmaker into a new project they will appear in the video preview so i assume that there's some kinds of memory issue or some project setting that is the cause to this problem.