seth-public/ws4kp-to-hls
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further optimization

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Seth Van Niekerk
2025-11-18 14:40:37 -05:00
parent 96cb36663e
commit 4947646cb3
2 changed files with 27 additions and 10 deletions
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20
src/ffmpegConfig.js
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@@ -56,7 +56,7 @@ async function buildFFmpegArgs({ fps, useMusic, musicPath }) {
'-preset', 'ultrafast',
'-tune', 'zerolatency',
'-pix_fmt', 'yuv420p',
'-g', fps.toString(), // Keyframe every second for 1s segments
'-g', (fps * 2).toString(), // Keyframe every 2 seconds for 2s segments
'-bf', '0', // No B-frames for lower latency
'-x264opts', 'nal-hrd=cbr:no-scenecut', // Constant bitrate, no scene detection
'-b:v', '2500k', // Target bitrate for stable encoding
@@ -75,12 +75,14 @@ async function buildFFmpegArgs({ fps, useMusic, musicPath }) {
'-max_interleave_delta', '500000', // Increased for smoother transitions (500ms)
'-err_detect', 'ignore_err', // Continue on minor audio errors
'-f', 'hls',
'-hls_time', '1', // Smaller segments for faster startup
'-hls_list_size', '3', // Fewer segments in playlist
'-hls_flags', 'delete_segments+omit_endlist',
'-hls_time', '2', // 2-second segments for better buffering
'-hls_list_size', '10', // Keep more segments in playlist for slower clients
'-hls_flags', 'omit_endlist+program_date_time+independent_segments',
'-hls_segment_type', 'mpegts',
'-hls_start_number_source', 'epoch',
'-start_number', '0', // Start from segment 0
'-flush_packets', '1', // Flush packets immediately
'-hls_allow_cache', '0', // Disable client caching
'pipe:1'
);
@@ -98,19 +100,21 @@ async function buildFFmpegArgs({ fps, useMusic, musicPath }) {
'-preset', 'ultrafast',
'-tune', 'zerolatency',
'-pix_fmt', 'yuv420p',
'-g', fps.toString(), // Keyframe every second for 1s segments
'-g', (fps * 2).toString(), // Keyframe every 2 seconds for 2s segments
'-bf', '0',
'-x264opts', 'nal-hrd=cbr:no-scenecut',
'-b:v', '2500k',
'-maxrate', '2500k',
'-bufsize', '5000k',
'-f', 'hls',
'-hls_time', '1', // Smaller segments for faster startup
'-hls_list_size', '3', // Fewer segments in playlist
'-hls_flags', 'delete_segments+omit_endlist',
'-hls_time', '2', // 2-second segments for better buffering
'-hls_list_size', '10', // Keep more segments in playlist for slower clients
'-hls_flags', 'omit_endlist+program_date_time+independent_segments',
'-hls_segment_type', 'mpegts',
'-hls_start_number_source', 'epoch',
'-start_number', '0',
'-flush_packets', '1', // Flush packets immediately
'-hls_allow_cache', '0', // Disable client caching
'pipe:1'
);

17
src/streamHandler.js
View File

@@ -33,6 +33,7 @@ async function streamHandler(req, res, { useMusic = false, musicPath, lateGeocod
let isCleaningUp = false;
let playlistFile = null;
let cleanup; // Declare cleanup function variable early
let streamId = '[STREAM]'; // Default stream ID
try {
// Set HLS headers
@@ -65,6 +66,18 @@ async function streamHandler(req, res, { useMusic = false, musicPath, lateGeocod
'--mute-audio',
'--disable-breakpad',
'--disable-component-update',
// Resource limits (safe optimizations)
'--disable-renderer-backgrounding',
'--disable-backgrounding-occluded-windows',
'--js-flags=--max-old-space-size=512', // Limit V8 heap to 512MB
'--renderer-process-limit=2', // Limit to 2 renderer processes
// Disable unnecessary features
'--disable-databases',
'--disable-plugins',
'--disable-notifications',
'--disable-features=AudioServiceOutOfProcess,TranslateUI',
'--autoplay-policy=no-user-gesture-required',
'--disable-blink-features=AutomationControlled',
`--window-size=${width},${height}`,
`--force-device-scale-factor=1`
],
@@ -76,8 +89,8 @@ async function streamHandler(req, res, { useMusic = false, musicPath, lateGeocod
browser = browserInstance;
playlistFile = ffmpegConfig.playlistFile;
// Create stream identifier from browser process PID
const streamId = `[${browser.process()?.pid || 'STREAM'}]`;
// Update stream identifier from browser process PID
streamId = `[${browser.process()?.pid || 'STREAM'}]`;
// Start FFmpeg immediately
ffmpegProcess = spawn('ffmpeg', ['-loglevel', 'error', '-hide_banner', ...ffmpegConfig.args], {