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Mike Lang ae809c696c cutter: Outline of how main cutter run loop works
This commit only lays out the main loop, showing the high-level flow
and defining shared utilities. This is for clarity.

The actual methods that do the work will be implemented seperately.
backfiller Renaming a variable that should have been part of the last commit
common Port existing cutting code from restreamer into common
cutter cutter: Outline of how main cutter run loop works
downloader downloader: Start backdoor later so workers is in locals
restreamer Port existing cutting code from restreamer into common
thrimshim updated thrimshim to handle all non-null edit columns
.gitignore Set up a docker compose file to run all images
.travis.yml travis.yml: Make script into individual lines
DATABASE.md database: Add constraints on edit inputs that they must be non-NULL if state != UNEDITED
LICENSE Licence under MIT
README.md Set up a docker compose file to run all images
build cutter: Add initial outline
docker-compose.jsonnet improvements suggested by ekim
generate-docker-compose generate-docker-compose: Clean up the container afterwards
generate-flamegraph generate-flamegraph: Script to create a flamegraph by querying prometheus
initial-design-doc.pdf Add initial design doc

README.md

Wubloader is a system for saving, re-serving and cutting into videos of a target twitch (or probably other HLS, but some twitch specifics are assumed) stream.

It was designed to serve the needs of the Video Strike Team as part of Desert Bus For Hope.

A full design doc can be read at initial-design-doc.pdf, but a brief overview of the components:

  • Downloader grabs segments from twitch and saves them to disk
  • Restreamer serves segments from disk as well as playlist files allowing them to be streamed
  • Backfiller queries restreamers of other servers in order to pick up segments this server doesn't have already, ie. it replicates missing segments.
  • Cutter interacts with a database to perform cutting jobs
  • Sheet Sync syncs specifc database columns to a google doc which is the primary operator interface.

Usage

All components are built as docker images. Components which access the disk expect a shared directory mounted at /mnt.

A docker-compose file is provided to run all components. See docker-compose.jsonnet to set configuration options, then generate the compose file with ./generate-docker-compose. Then run docker-compose up.