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fix: preserve existing cover art when editing metadata without new image

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-map 0:v? copies the embedded cover stream from the original file when
no new artwork is supplied, preventing it from being silently stripped.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
HoneyandClaude Sonnet 4.6 committed 2026-05-23 20:28:04 +02:00
1 parent c9fe1da1b0
commit e4cdbe44e7
1 file changed
+7 -2
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backend/novasonic-server.js
+7 -2
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@@ -483,7 +483,12 @@ app.post('/api/edit-metadata', async (req, res) => {
const ffArgs = ['-i', filePath]; const ffArgs = ['-i', filePath];
if (artFile) ffArgs.push('-i', artFile); if (artFile) ffArgs.push('-i', artFile);
ffArgs.push('-map', '0:a'); ffArgs.push('-map', '0:a');
if (artFile) ffArgs.push('-map', '1:v'); // Always carry cover art: new file if provided, otherwise preserve existing embedded art
if (artFile) {
ffArgs.push('-map', '1:v');
} else {
ffArgs.push('-map', '0:v?'); // '?' = optional, no error if file has no cover
}
ffArgs.push('-c', 'copy', '-map_metadata', '-1', '-id3v2_version', '3'); ffArgs.push('-c', 'copy', '-map_metadata', '-1', '-id3v2_version', '3');
if (title) ffArgs.push('-metadata', `title=${title}`); if (title) ffArgs.push('-metadata', `title=${title}`);
if (artist) ffArgs.push('-metadata', `artist=${artist}`, '-metadata', `album_artist=${artist.split(';')[0].trim()}`); if (artist) ffArgs.push('-metadata', `artist=${artist}`, '-metadata', `album_artist=${artist.split(';')[0].trim()}`);
@@ -493,7 +498,7 @@ app.post('/api/edit-metadata', async (req, res) => {
if (totalTracks) ffArgs.push('-metadata', `totaltracks=${String(totalTracks)}`); if (totalTracks) ffArgs.push('-metadata', `totaltracks=${String(totalTracks)}`);
if (discNum) ffArgs.push('-metadata', `disc=${discTotal ? `${discNum}/${discTotal}` : String(discNum)}`); if (discNum) ffArgs.push('-metadata', `disc=${discTotal ? `${discNum}/${discTotal}` : String(discNum)}`);
if (genre) ffArgs.push('-metadata', `genre=${genre}`); if (genre) ffArgs.push('-metadata', `genre=${genre}`);
if (artFile) ffArgs.push('-metadata:s:v', 'title=Album cover', '-metadata:s:v', 'comment=Cover (front)'); ffArgs.push('-metadata:s:v', 'title=Album cover', '-metadata:s:v', 'comment=Cover (front)');
ffArgs.push(tmpFile, '-y', '-loglevel', 'error'); ffArgs.push(tmpFile, '-y', '-loglevel', 'error');
const ff = spawn('ffmpeg', ffArgs); const ff = spawn('ffmpeg', ffArgs);