default to mov when pcm audio

fixes #947 #163 #367 #948

src/App.jsx

@@ -1410,7 +1410,7 @@ const App = memo(() => {
       const fileMeta = await readFileMeta(fp);
       // console.log('file meta read', fileMeta);
 
-      const fileFormatNew = await getSmarterOutFormat(fp, fileMeta.format);
+      const fileFormatNew = await getSmarterOutFormat({ filePath: fp, fileMeta });
 
       // console.log(streams, fileMeta.format, fileFormat);
 

src/components/ConcatDialog.jsx

@@ -61,7 +61,7 @@ const ConcatDialog = memo(({
       setFileFormat();
       setDetectedFileFormat();
       const fileMetaNew = await readFileMeta(firstPath);
-      const fileFormatNew = await getSmarterOutFormat(firstPath, fileMetaNew.format);
+      const fileFormatNew = await getSmarterOutFormat({ filePath: firstPath, fileMeta: fileMetaNew });
       if (aborted) return;
       setFileMeta(fileMetaNew);
       setFileFormat(fileFormatNew);

src/ffmpeg.js

@@ -6,6 +6,7 @@ import i18n from 'i18next';
 import Timecode from 'smpte-timecode';
 
 import { getOutPath, isDurationValid, getExtensionForFormat, isWindows, platform } from './util';
+import { encodeablePcmCodecs } from './util/streams';
 
 const execa = window.require('execa');
 const { join } = window.require('path');
@@ -228,13 +229,20 @@ export async function createChaptersFromSegments({ segmentPaths, chapterNames })
  * Therefore we have to map between detected format and encode format
  * See also ffmpeg -formats
  */
-function mapFormat(requestedFormat) {
+function mapDefaultFormat({ streams, requestedFormat }) {
+  if (requestedFormat === 'mp4') {
+    // Only MOV supports these, so switch to MOV https://github.com/mifi/lossless-cut/issues/948
+    if (streams.some((stream) => encodeablePcmCodecs.includes(stream.codec_name))) {
+      return 'mov';
+    }
+  }
+
   switch (requestedFormat) {
     // These two cmds produce identical output, so we assume that encoding "ipod" means encoding m4a
     // ffmpeg -i example.aac -c copy OutputFile2.m4a
     // ffmpeg -i example.aac -c copy -f ipod OutputFile.m4a
     // See also https://github.com/mifi/lossless-cut/issues/28
-    case 'm4a': return 'ipod';
+    case 'm4a':
     case 'aac': return 'ipod';
     default: return requestedFormat;
   }
@@ -245,8 +253,8 @@ function determineOutputFormat(ffprobeFormats, fileTypeResponse) {
   return ffprobeFormats[0] || undefined;
 }
 
-export async function getSmarterOutFormat(filePath, formatData) {
-  const formatsStr = formatData.format_name;
+export async function getSmarterOutFormat({ filePath, fileMeta: { format, streams } }) {
+  const formatsStr = format.format_name;
   console.log('formats', formatsStr);
   const formats = (formatsStr || '').split(',');
 
@@ -254,12 +262,9 @@ export async function getSmarterOutFormat(filePath, formatData) {
   const bytes = await readChunk(filePath, 0, 4100);
   const fileTypeResponse = fileType(bytes) || {};
   console.log(`fileType detected format ${JSON.stringify(fileTypeResponse)}`);
-  let assumedFormat = determineOutputFormat(formats, fileTypeResponse);
-
-  // https://github.com/mifi/lossless-cut/issues/367
-  if (assumedFormat === 'mp4' && formatData.tags && formatData.tags.major_brand === 'XAVC') assumedFormat = 'mov';
+  const assumedFormat = determineOutputFormat(formats, fileTypeResponse);
 
-  return mapFormat(assumedFormat);
+  return mapDefaultFormat({ streams, requestedFormat: assumedFormat });
 }
 
 export async function readFileMeta(filePath) {

src/util/streams.js

@@ -6,6 +6,57 @@ export const defaultProcessedCodecTypes = [
   'attachment',
 ];
 
+// taken from `ffmpeg -codecs`
+export const encodeablePcmCodecs = [
+  'adpcm_adx',
+  'adpcm_argo',
+  'adpcm_g722',
+  'adpcm_g726',
+  'adpcm_g726le',
+  'adpcm_ima_alp',
+  'adpcm_ima_amv',
+  'adpcm_ima_apm',
+  'adpcm_ima_qt',
+  'adpcm_ima_ssi',
+  'adpcm_ima_wav',
+  'adpcm_ms',
+  'adpcm_swf',
+  'adpcm_yamaha',
+
+  'pcm_alaw',
+  'pcm_dvd',
+
+  'pcm_f32be',
+  'pcm_f32le',
+  'pcm_f64be',
+  'pcm_f64le',
+
+  'pcm_mulaw',
+  'pcm_s16be',
+  'pcm_s16be_planar',
+  'pcm_s16le',
+  'pcm_s16le_planar',
+  'pcm_s24be',
+  'pcm_s24daud',
+  'pcm_s24le',
+  'pcm_s24le_planar',
+  'pcm_s32be',
+  'pcm_s32le',
+  'pcm_s32le_planar',
+  'pcm_s64be',
+  'pcm_s64le',
+  'pcm_s8',
+  'pcm_s8_planar',
+  'pcm_u16be',
+  'pcm_u16le',
+  'pcm_u24be',
+  'pcm_u24le',
+  'pcm_u32be',
+  'pcm_u32le',
+  'pcm_u8',
+  'pcm_vidc',
+];
+
 export function getActiveDisposition(disposition) {
   if (disposition == null) return undefined;
   const existingActiveDispositionEntry = Object.entries(disposition).find(([, value]) => value === 1);

src/util/streams.test.js

@@ -17,7 +17,7 @@ const streams1 = [
 // https://stackoverflow.com/questions/32152090/encode-h265-to-hvc1-codec
 test('getMapStreamsArgs', () => {
   const path = '/path/file.mp4';
-const outFormat = 'mp4';
+  const outFormat = 'mp4';
 
   expect(getMapStreamsArgs({
     allFilesMeta: { [path]: { streams: streams1 } },