VideoReplace
VideoReplace[video, {t1, t2} -> new] replaces the video between t1 and t2 with the new video new.
VideoReplace[video, {{t11, t12}, ...} -> new]replaces multiple intervals with the same video new.VideoReplace[video, {{t11, t12} -> new1, ...}]replaces multiple intervals.VideoReplace[video, ..., durfitting]uses the specified durfitting method to replace an interval of a different duration.
Examples
Replace a section of video:
VideoReplace[video, {Quantity[2, "Seconds"], Quantity[5, "Seconds"]} -> newClip]Replace multiple intervals:
VideoReplace[video, {{Quantity[1, "Seconds"], Quantity[2, "Seconds"]} -> clip1, {Quantity[5, "Seconds"], Quantity[7, "Seconds"]} -> clip2}]Please visit the official Wolfram Language Reference for more details.