Instant video stitching and associated methods and systems

A non-transitory storage medium storing program code for video editing, the program code executable by a hardware processor, the program code when executed by the hardware processor causing the hardware processor to:

• receive a first video file, the first video file comprising a first plurality of labeled video segments and a first playlist, the first playlist comprising a first plurality of segment labels providing an order for playing the first plurality of labeled video segments;
• receive a second video file, the second video file comprising a second plurality of labeled video segments and a second playlist, the second playlist comprising a second plurality of segment labels providing an order for playing the second plurality of labeled video segments, wherein each labeled video segment of the first plurality of labeled video segments and of the second plurality of labeled video segments comprises a plurality of frames and a corresponding plurality of timestamps;
• receive a stitch request, the stitch request comprising the first playlist and the second playlist;
• receive a segment request from a user device;
• and execute, just-in-time, the stitch request in response to receiving the segment request, by generating a modified playlist by appending the second playlist to the end of the first playlist.