I had a video I edited and rendered with Kdenlive. When I made a few minor edits to the original project and re-rendered using the exact same settings and clips, Kdenlive renders a corrupted video file (No thumbnail, no seeking, and glitched image). I havn't added any clips, nor installed anything in between the two renders. This issue now occurs in every format in a different way. For example, if I render to mp4 or mpeg, the file is corrupted in the ways mentioned above. If I render to a .avi, the video has no sound and skips around randomly.