2024-06-13 UTC
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[KevinMarks] Video time to byte range mapping is built into mp4 as that is based on the quicktime movie format, which got that right. Some other formats like Ogg and raw MPEG streams don't do that so you have to guess the byte range to fetch when seeking. HLS/Dash reinvented this at the file system layer with a playlist of files containing media chunks at known offsets, originally for live updating over TCP, and adopted for prerecorded playback