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https://github.com/ad1217/PrinterStatus
synced 2024-11-10 18:45:08 -05:00
Add reconnection handling to FFmpeg streams
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36c3af1446
commit
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@ -1,5 +1,8 @@
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import * as ffmpeg from 'fluent-ffmpeg';
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import * as Mp4Frag from 'mp4frag';
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import { PassThrough } from 'stream';
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const RECONNECT_TIME = 5000;
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interface WebcamSettings {
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flipH: boolean;
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@ -7,11 +10,11 @@ interface WebcamSettings {
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rotate90: boolean;
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}
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export function make_mp4frag(
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slug: string,
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function start_ffmpeg(
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url: URL | string,
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webcamSettings: WebcamSettings
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): Mp4Frag {
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webcamSettings: WebcamSettings,
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mp4frag: Mp4Frag
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) {
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let transforms = [];
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if (webcamSettings.flipH) {
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transforms.push('hflip');
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@ -26,6 +29,7 @@ export function make_mp4frag(
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const command = ffmpeg(url.toString())
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.nativeFramerate()
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.inputOptions([
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'-timeout 5000000',
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'-probesize 1048576',
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'-analyzeduration 10000000',
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'-use_wallclock_as_timestamps 1',
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@ -48,16 +52,43 @@ export function make_mp4frag(
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'-pix_fmt yuv420p',
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'-movflags +dash+negative_cts_offsets',
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])
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.on('error', function (err) {
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console.log('ffmpeg error occurred: ' + err.message);
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.on('start', function (commandLine) {
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console.log('Spawned FFmpeg for ' + url.toString());
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});
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let pipe = command.pipe(undefined, { end: false }) as PassThrough;
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pipe.pipe(mp4frag);
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function reconnect() {
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start_ffmpeg(url, webcamSettings, mp4frag);
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}
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command.once('error', (err) => {
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console.log(
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`FFmpeg error occurred, reconnecting in ${RECONNECT_TIME}ms: ${err.message}`
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);
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pipe.unpipe();
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command.kill('SIGKILL');
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setTimeout(() => reconnect(), RECONNECT_TIME);
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});
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command.once('end', () => {
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console.log(`FFmpeg stream ended, reconnecting in ${RECONNECT_TIME}ms:`);
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pipe.unpipe();
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setTimeout(() => reconnect(), RECONNECT_TIME);
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});
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}
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export function make_mp4frag(
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slug: string,
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url: URL | string,
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webcamSettings: WebcamSettings
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): Mp4Frag {
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const mp4frag = new Mp4Frag({
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hlsPlaylistBase: slug,
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});
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command.pipe(mp4frag);
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start_ffmpeg(url, webcamSettings, mp4frag);
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return mp4frag;
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}
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