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feat: support changing the x264 encoder tune #114

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Merged
digiz3d merged 2 commits into from
Feb 17, 2025
Merged

feat: support changing the x264 encoder tune #114

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75a1f13
feat: support changing the h264 tune
digiz3d Feb 17, 2025
15adad4
:abcd:
digiz3d Feb 17, 2025
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1 change: 1 addition & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,7 @@ For instance if you plan on streaming to Twitch, set the OUTPUT to something lik
`OUTPUT` is the output file/stream. Can either start with `rtmp://`, `gs://` or end with `.mp4`. Defaults to `output.mp4`
`RATE` is the constant bitrate (CBR) used for the video. Defaults to `6000`
`RESOLUTION` is the resolution of the video. Defaults to `1280x720`
`TUNE` is the FFmpeg libx264 [tune setting](https://trac.ffmpeg.org/wiki/Encode/H.264#Tune). Defaults to `zerolatency`
`URL` is the webpage to record. Required.

# Contributing
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3 changes: 2 additions & 1 deletion src/index.ts
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Expand Up @@ -9,6 +9,7 @@ const disableAudio = process.env.DISABLE_AUDIO === 'true'
const fps = process.env.FPS || 30
const rate = process.env.RATE || 6000
const resolution = process.env.RESOLUTION
const tune = process.env.TUNE || 'zerolatency'
const url = process.env.URL

async function main() {
Expand Down Expand Up @@ -80,7 +81,7 @@ async function main() {
`ffmpeg -y -loglevel error -hide_banner -async 1 -nostdin -s ${resolution} -r ${fps} -draw_mouse 0
-f x11grab -i $DISPLAY
-f pulse -ac 2 -i default
-c:v libx264 -preset veryfast -tune zerolatency -b:v ${rate}k -minrate ${rate}k -maxrate ${rate}k -g 30
-c:v libx264 -preset veryfast -tune ${tune} -b:v ${rate}k -minrate ${rate}k -maxrate ${rate}k -g 30
${audioConfig}
-ss 00:00:03 ${ffmpegDurationParams} -pix_fmt yuv420p ${exporter.getFFmpegOutputParams()}`.replaceAll(
/[\n\r\s]+/gm,
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