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work around mp2/mp3 bug in ffmpeg

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closes #2129
This commit is contained in:
Mikael Finstad 2024-08-27 21:39:33 +02:00
parent 91fbc0fa95
commit 319124196e
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GPG Key ID: 25AB36E3E81CBC26
1 changed files with 23 additions and 8 deletions
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31
src/renderer/src/ffmpeg.ts
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@ -259,26 +259,41 @@ function mapDefaultFormat({ streams, requestedFormat }: { streams: FFprobeStream
async function determineOutputFormat(ffprobeFormatsStr: string | undefined, filePath: string) {
const ffprobeFormats = (ffprobeFormatsStr || '').split(',').map((str) => str.trim()).filter(Boolean);
if (ffprobeFormats.length === 0) {
console.warn('FFprobe returned unknown formats', ffprobeFormatsStr);
const [firstFfprobeFormat] = ffprobeFormats;
if (firstFfprobeFormat == null) {
console.warn('FFprobe returned no formats', ffprobeFormatsStr);
return undefined;
}
console.log('FFprobe detected format(s)', ffprobeFormatsStr);
const [firstFfprobeFormat] = ffprobeFormats;
if (ffprobeFormats.length === 1) return firstFfprobeFormat;
// We need to test mp3 first because ffprobe seems to report the wrong format sometimes https://github.com/mifi/lossless-cut/issues/2129
if (firstFfprobeFormat === 'mp3') {
// file-type detects it correctly
const fileTypeResponse = await FileType.fromFile(filePath);
if (fileTypeResponse?.mime === 'audio/mpeg') {
return 'mp2';
}
}
// If ffprobe returned a list of formats, try to be a bit smarter about it.
// This should only be the case for matroska and mov. See `ffmpeg -formats`
if (firstFfprobeFormat == null || !['matroska', 'mov'].includes(firstFfprobeFormat)) {
if (ffprobeFormats.length === 1) {
return firstFfprobeFormat;
}
// If ffprobe returned a list of formats, use `file-type` to try to detect more accurately.
// This should only be the case for matroska (matroska,webm) and mov (mov,mp4,m4a,3gp,3g2,mj2),
// so if it's another format, then just return the first format from the list.
// See also `ffmpeg -formats`
if (!['matroska', 'mov'].includes(firstFfprobeFormat)) {
console.warn('Unknown ffprobe format list', ffprobeFormats);
return firstFfprobeFormat;
}
const fileTypeResponse = await FileType.fromFile(filePath);
if (fileTypeResponse == null) {
console.warn('file-type failed to detect format, defaulting to first', ffprobeFormats);
console.warn('file-type failed to detect format, defaulting to first FFprobe detected format', ffprobeFormats);
return firstFfprobeFormat;
}