Timelapse sequence

[Elusien]

This is a warning message, not necessarily a problem. See here:

Not seek able stuff

Usually this occurs because Shotcut was not able to detect a standard frame rate for your video and then assumes that it might be variable frame rate. Errors are common when trying to seek in variable frame rate videos because it is not possible to determine a frame position without scanning the entire file from the beginning for each frame. Your file may or may not actually be variable frame rate. Shotcut is just warning you because the detection was not conclusive. If your file comes from a …