CN-JS-HuiBai/Media-Coding-Web
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CN-JS-HuiBai
2026-04-02 17:33:32 +08:00
parent 364438b66d
commit aad2b3db89
4 changed files with 106 additions and 46 deletions
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32
server.js
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@@ -64,17 +64,20 @@ app.get('/api/videos', async (req, res) => {
// Endpoint to transcode S3 video streaming to HLS
app.post('/api/transcode', async (req, res) => {
const { key } = req.body;
const { key, codec } = req.body;
if (!key) {
return res.status(400).json({ error: 'Video key is required' });
}
const safeCodec = codec === 'h265' ? 'h265' : 'h264';
const videoCodec = safeCodec === 'h265' ? 'libx265' : 'libx264';
try {
const safeKeyName = key.replace(/[^a-zA-Z0-9_\-]/g, '');
const outputDir = path.join(__dirname, 'public', 'hls', safeKeyName);
const safeKeySegments = key.split('/').map(segment => segment.replace(/[^a-zA-Z0-9_\-]/g, '_'));
const outputDir = path.join(__dirname, 'public', 'hls', ...safeKeySegments);
const m3u8Path = path.join(outputDir, 'index.m3u8');
const hlsUrl = `/hls/${safeKeyName}/index.m3u8`;
const hlsUrl = `/hls/${safeKeySegments.join('/')}/index.m3u8`;
// If it already exists, just return the URL
if (fs.existsSync(m3u8Path)) {
@@ -94,15 +97,18 @@ app.post('/api/transcode', async (req, res) => {
const s3Stream = response.Body;
// Triggers fluent-ffmpeg to transcode to HLS
console.log(`Starting transcoding for ${key}`);
console.log(`Starting transcoding for ${key} with codec ${videoCodec}`);
ffmpeg(s3Stream)
// Use hardware acceleration if available (optional for boilerplate)
.videoCodec(videoCodec)
.audioCodec('aac')
.outputOptions([
'-codec:v copy', // Use copy if it's already h264, else change to libx264
'-codec:a aac',
'-hls_time 10', // 10 second segments
'-hls_list_size 0', // keep all segments in playlist
'-preset fast',
'-crf 23',
'-hls_time 6',
'-hls_list_size 0',
'-hls_allow_cache 1',
'-hls_flags independent_segments',
'-f hls'
])
.output(m3u8Path)
@@ -128,12 +134,12 @@ app.get('/api/status', (req, res) => {
const { key } = req.query;
if (!key) return res.status(400).json({ error: 'Key is required' });
const safeKeyName = key.replace(/[^a-zA-Z0-9_\-]/g, '');
const m3u8Path = path.join(__dirname, 'public', 'hls', safeKeyName, 'index.m3u8');
const safeKeySegments = key.split('/').map(segment => segment.replace(/[^a-zA-Z0-9_\-]/g, '_'));
const m3u8Path = path.join(__dirname, 'public', 'hls', ...safeKeySegments, 'index.m3u8');
// Check if the playlist file exists
if (fs.existsSync(m3u8Path)) {
res.json({ ready: true, hlsUrl: `/hls/${safeKeyName}/index.m3u8` });
res.json({ ready: true, hlsUrl: `/hls/${safeKeySegments.join('/')}/index.m3u8` });
} else {
res.json({ ready: false });
}