https://github.com/divout/mpv_reduce_stream_cache

Reduces MPV cache for streams by increasing playback speed.
https://github.com/divout/mpv_reduce_stream_cache

Last synced: 3 months ago
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Reduces MPV cache for streams by increasing playback speed.

• Host: GitHub
• URL: https://github.com/divout/mpv_reduce_stream_cache
• Owner: divout
• License: mit
• Created: 2022-01-01T15:26:33.000Z (almost 3 years ago)
• Default Branch: main
• Last Pushed: 2023-11-02T02:36:57.000Z (about 1 year ago)
• Last Synced: 2024-06-30T13:40:13.133Z (5 months ago)
• Language: JavaScript
• Homepage:
• Size: 3.91 KB
• Stars: 8
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

• awesome-mpv - reduce_stream_cache - Reduces MPV cache for streams by increasing playback speed. Works with Twitch through Streamlink. (Streaming)

README

        
# Reduce stream cache

Reduces MPV cache for streams by increasing playback speed. It meant to work with Twitch through [Streamlink](https://streamlink.github.io/install.html). I find this setup has a few hundred milliseconds lower latency than the Twitch web player.

## Installation

Copy related folders to your MPV config folder `~/.config/mpv`.

## Script configuration

In `./script-opts/reduce_stream_cache.conf`, you can adjust when to start and stop speeding up the playback. The default configuration is quite aggressive, and it works fine on a wired stable Internet connection. But if you or your streamer have an unstable Internet connection, consider increasing `enable_faster_speed_over_cache_seconds` to prevent often speed changes. Or turn off this script with `a` shortcut.

## Make an MPV profile

MPV has its own `low-latency` profile. But the profile below has lower latency in my setup.

```bash

# ~/.config/mpv/mpv.conf

[stream]

demuxer-lavf-o-add="fflags=+nobuffer+fastseek+flush_packets"

cache=no

deband=no

dither-depth=no

scale=bilinear

cscale=bilinear

dscale=bilinear

scale-antiring=0

cscale-antiring=0

dither-depth=no

correct-downscaling=no

sigmoid-upscaling=no

```

## Start a stream with Streamlink.

```bash

streamlink twitch.tv/twitch \

  best \

  -p "mpv" \

  --player-args="--profile='stream' --script-opts='enable-stream-cache-reduction=true'" \

  --title="stream-twitch" \

  --twitch-low-latency \

  --twitch-disable-ads \

  --ringbuffer-size=256M

```

You can put it in the [gnome extension](https://extensions.gnome.org/extension/1078/twitchlive-panel/) or modify the [play-with-mpv](https://github.com/Thann/play-with-mpv) Chrome extension to your liking.

## Stream replay

If you use the MPV profile that disables cache, you won't be able to seek the video stream. As a workaround, you can record the stream to `/tmp/` and open the recorded video with a shortcut.

```bash

streamlink twitch.tv/twitch \

  best \

  -p "mpv" \

  --player-args="--profile='stream' --script-opts='enable-stream-cache-reduction=true'" \

  --title="stream-twitch" \

  --twitch-low-latency \

  --twitch-disable-ads \

  --ringbuffer-size=256M \

  --record="/tmp/stream-twitch.mp4" \

  --force

```

Then pressing `'` will open the recorded video. See `./script-opts/stream_replay.conf` for configuration.