VHS for the streaming era: record and replay for HLS

on YouTube ↗10m

" summary

Tool claims it can record playlists and segments verbatim and later replay them as live via timestamped sessions, rewriting URLs to local files and serving media from disk. Implementation is a CLI that downloads multivariant playlists and segments, stores timestamps, spawns an HTTP server that serves the right playlist offset and original segments, and is already used to reproduce intermittent desyncs and SSAI adbreak stalls and to create deterministic regression tests.

AI-written summary · about

" chapters (6)

1. 0:00Introduction
2. 1:47Need for full-stream recording
3. 3:32Introducing streamr
4. 5:39Rewriting playlists and segments
5. 7:03Real-world debugging
6. 8:30Future work and open-source

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