@remotion/renderer: Support outputting as 24-bit lossless

[JonnyBurger]

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Project	Deployment	Preview	Comments	Updated (UTC)
bugs	Ready	Preview	Comment	Oct 21, 2025 9:08am
remotion	Ready	Preview	Comment	Oct 21, 2025 9:08am

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Additional Comments:

packages/it-tests/pure.js (line 347):
The test fixture file packages/it-tests/pure.js contains outdated audio codec configuration that doesn't match the source code changes. This compiled/bundled file needs to be regenerated to reflect the removal of pcm-16 support from the aac codec.

View Details

📝 Patch Details

diff --git a/packages/it-tests/pure.js b/packages/it-tests/pure.js
index c32df4d746..c466c937b0 100644
--- a/packages/it-tests/pure.js
+++ b/packages/it-tests/pure.js
@@ -335,24 +335,24 @@ var require_audio_codec = __commonJS((exports) => {
   Object.defineProperty(exports, "__esModule", { value: true });
   exports.audioCodecOption = exports.getDefaultAudioCodec = exports.resolveAudioCodec = exports.getExtensionFromAudioCodec = exports.defaultAudioCodecs = exports.mapAudioCodecToFfmpegAudioCodecName = exports.supportedAudioCodecs = exports.isAudioCodec = exports.validAudioCodecs = undefined;
   var separate_audio_1 = require_separate_audio();
-  exports.validAudioCodecs = ["pcm-16", "aac", "mp3", "opus"];
+  exports.validAudioCodecs = ["pcm-16", "aac", "mp3", "opus", "pcm-24"];
   var isAudioCodec = (codec) => {
     return codec === "mp3" || codec === "aac" || codec === "wav";
   };
   exports.isAudioCodec = isAudioCodec;
   exports.supportedAudioCodecs = {
-    h264: ["aac", "pcm-16", "mp3"],
-    "h264-mkv": ["pcm-16", "mp3"],
-    "h264-ts": ["pcm-16", "aac"],
-    aac: ["aac", "pcm-16"],
+    h264: ["aac", "pcm-16", "pcm-24", "mp3"],
+    "h264-mkv": ["pcm-16", "pcm-24", "mp3"],
+    "h264-ts": ["pcm-16", "pcm-24", "aac"],
+    aac: ["aac"],
     avi: [],
     gif: [],
-    h265: ["aac", "pcm-16"],
+    h265: ["aac", "pcm-16", "pcm-24"],
     mp3: ["mp3", "pcm-16"],
     prores: ["aac", "pcm-16"],
     vp8: ["opus", "pcm-16"],
     vp9: ["opus", "pcm-16"],
-    wav: ["pcm-16"]
+    wav: ["pcm-16", "pcm-24"]
   };
   var _satisfies = exports.supportedAudioCodecs;
   if (_satisfies) {

Analysis

Bundled test fixture contains outdated audio codec configuration

What fails: The bundled test file packages/it-tests/pure.js contains outdated validAudioCodecs and supportedAudioCodecs definitions that don't match the current source code in packages/renderer/src/options/audio-codec.tsx

How to reproduce:

cd packages/it-tests
node -e "const fs = require('fs'); const content = fs.readFileSync('pure.js', 'utf8'); console.log('Missing pcm-24:', !content.includes('pcm-24')); console.log('AAC still includes pcm-16:', content.match(/aac: \[(.*?)\]/)[1].includes('pcm-16'));"

Result: Shows Missing pcm-24: true and AAC still includes pcm-16: true

Expected: The bundled file should match the source code where validAudioCodecs includes 'pcm-24' and supportedAudioCodecs.aac is ['aac'] only per renderer source code