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ffmpeg fallback for specific vp9 videos

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Kibi Kelburton
2026-06-01 10:33:04 +02:00
parent 8d8416e650
commit 0f69365b02
2 changed files with 54 additions and 2 deletions
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28
src/comment_upload_handler.mjs
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@@ -625,7 +625,33 @@ async function generateCommentThumbnail(filename, mime, uuid, size = 512) {
const ffThumbSize = Math.max(size, 512);
const seeks = ['20%', '40%', '60%', '80%'];
for (const seek of seeks) {
await queue.spawn('ffmpegthumbnailer', ['-i', realSource, '-s', String(ffThumbSize), '-t', seek, '-o', tmpFile]);
try {
await queue.spawn('ffmpegthumbnailer', ['-i', realSource, '-s', String(ffThumbSize), '-t', seek, '-o', tmpFile]);
} catch (err) {
console.warn(`[COMMENT_UPLOAD] ffmpegthumbnailer failed at ${seek} for ${filename}, trying ffmpeg fallback: ${err.message}`);
let seekSeconds = 0;
try {
const durationStr = (await queue.spawn('ffprobe', ['-v', 'error', '-show_entries', 'format=duration', '-of', 'default=noprint_wrappers=1:nokey=1', realSource])).stdout.trim();
const duration = parseFloat(durationStr);
if (!isNaN(duration) && duration > 0) {
const pct = parseFloat(seek) / 100;
seekSeconds = duration * pct;
}
} catch (probeErr) {
seekSeconds = seek === '20%' ? 2 : seek === '40%' ? 5 : seek === '60%' ? 8 : 10;
}
// Fallback to ffmpeg, overriding the color transfer characteristic to standard bt709 (1) in case of unsupported trc properties (e.g. log316)
await queue.spawn('ffmpeg', [
'-y',
'-ss', String(seekSeconds),
'-color_trc', '1',
'-i', realSource,
'-frames:v', '1',
'-update', '1',
'-vf', `scale=${ffThumbSize}:${ffThumbSize}:force_original_aspect_ratio=increase,crop=${ffThumbSize}:${ffThumbSize}`,
tmpFile
]);
}
try {
const { stdout } = await queue.spawn('magick', [tmpFile, '-colorspace', 'Gray', '-format', '%[fx:mean]', 'info:']);
if (parseFloat(stdout.trim()) > 0.05) break;

28
src/inc/queue.mjs
View File

@@ -373,7 +373,33 @@ export default new class queue {
const ffThumbSize = Math.max(thumbSize, 512);
const seeks = ['20%', '40%', '60%', '80%'];
for (const seek of seeks) {
await this.spawn('ffmpegthumbnailer', ['-i', sourcePath, '-s', String(ffThumbSize), '-t', seek, '-o', tmpFile]);
try {
await this.spawn('ffmpegthumbnailer', ['-i', sourcePath, '-s', String(ffThumbSize), '-t', seek, '-o', tmpFile]);
} catch (err) {
console.warn(`[QUEUE] ffmpegthumbnailer failed at ${seek} for ${itemid}, trying ffmpeg fallback: ${err.message}`);
let seekSeconds = 0;
try {
const durationStr = (await this.spawn('ffprobe', ['-v', 'error', '-show_entries', 'format=duration', '-of', 'default=noprint_wrappers=1:nokey=1', sourcePath])).stdout.trim();
const duration = parseFloat(durationStr);
if (!isNaN(duration) && duration > 0) {
const pct = parseFloat(seek) / 100;
seekSeconds = duration * pct;
}
} catch (probeErr) {
seekSeconds = seek === '20%' ? 2 : seek === '40%' ? 5 : seek === '60%' ? 8 : 10;
}
// Fallback to ffmpeg, overriding the color transfer characteristic to standard bt709 (1) in case of unsupported trc properties (e.g. log316)
await this.spawn('ffmpeg', [
'-y',
'-ss', String(seekSeconds),
'-color_trc', '1',
'-i', sourcePath,
'-frames:v', '1',
'-update', '1',
'-vf', `scale=${ffThumbSize}:${ffThumbSize}:force_original_aspect_ratio=increase,crop=${ffThumbSize}:${ffThumbSize}`,
tmpFile
]);
}
try {
const { stdout } = await this.spawn('magick', [tmpFile, '-colorspace', 'Gray', '-format', '%[fx:mean]', 'info:']);
if (parseFloat(stdout.trim()) > 0.05) break;