FlexClip supports uploading various video formats (within 3GB per file), including 'mp4', 'mov', 'webm', 'm4v', 'avi', 'wmv', 'mkv', 'rmvb'，'.mpg'，'.mpeg', '.flv', '.rm',' .ts'.

With Timeline Mode, you can upload videos in different formats or encodings, and the system will automatically convert them to a workable format.

If failed, we recommend you reformat it using the free online video converting tool: https://www.flexclip.com/tools/convert-video/.