240p_400k_366067022.mp4 -

This represents the target bitrate of 400 Kilobits per second (Kbps). Bitrate determines the amount of data processed per second; at 400K, the file is highly compressed to ensure smooth playback on slow internet connections, though this results in lower visual quality.

When a user presses "play," the video player detects their connection speed and automatically selects the appropriate file. For example: A user on fiber internet might pull a file. 240P_400K_366067022.mp4

In modern streaming, a single video is rarely stored as just one file. Instead, servers generate multiple versions (renditions) of the same video at different quality levels. As seen in developer discussions on GitHub , these files are often part of a or Master M3U8 playlist . This represents the target bitrate of 400 Kilobits