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Add custom quality factors and quantizer bitrate mode (#448)

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* Add custom quality factors and quantizer bitrate mode (closes #327)

* Fix quantizer mode fallback and per-frame quantizer edge cases

* Clean up quantizer mode tests

* Quantizer implementation

* Add quality tests

* Improve conversion codec error message, make test more lenient

* Add quantizer support blog post

---------

Co-authored-by: Vanilagy <[email protected]>
This commit is contained in:
Don Carignan
2026-07-30 17:24:59 +02:00
committed by GitHub
co-authored by Vanilagy
parent 1a99b0371d
commit c3df2a24e5
48 changed files with 1372 additions and 371 deletions
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test/node/ac3.test.ts
+5 -5
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@@ -8,7 +8,7 @@ import { MpegTsOutputFormat } from '../../src/output-format.js';
import { BufferTarget } from '../../src/target.js';
import { Conversion } from '../../src/conversion.js';
import { AC3_REGISTRATION_DESCRIPTOR, EAC3_REGISTRATION_DESCRIPTOR } from '../../src/codec-data.js';
import { canEncode } from '../../src/encode.js';
import { canEncode, Quality } from '../../src/encode.js';
import { AudioSampleSink, EncodedPacketSink } from '../../src/media-sink.js';
import { AudioSampleSource } from '../../src/media-source.js';
import { Mp4OutputFormat } from '../../src/output-format.js';
@@ -248,7 +248,7 @@ test('AC-3 encoding', async () => {
target: new BufferTarget(),
});
const audioSource = new AudioSampleSource({ codec: 'ac3', bitrate: 192000 });
const audioSource = new AudioSampleSource({ codec: 'ac3', quality: new Quality({ bitrate: 192000 }) });
output.addAudioTrack(audioSource);
await output.start();
@@ -298,7 +298,7 @@ test('E-AC-3 encoding', async () => {
target: new BufferTarget(),
});
const audioSource = new AudioSampleSource({ codec: 'eac3', bitrate: 192000 });
const audioSource = new AudioSampleSource({ codec: 'eac3', quality: new Quality({ bitrate: 192000 }) });
output.addAudioTrack(audioSource);
await output.start();
@@ -350,7 +350,7 @@ test('AC-3 with huge timestamps', async () => {
target: new BufferTarget(),
});
const audioSource = new AudioSampleSource({ codec: 'ac3', bitrate: 192000 });
const audioSource = new AudioSampleSource({ codec: 'ac3', quality: new Quality({ bitrate: 192000 }) });
output.addAudioTrack(audioSource);
await output.start();
@@ -401,7 +401,7 @@ test('E-AC-3 with huge timestamps', async () => {
target: new BufferTarget(),
});
const audioSource = new AudioSampleSource({ codec: 'eac3', bitrate: 192000 });
const audioSource = new AudioSampleSource({ codec: 'eac3', quality: new Quality({ bitrate: 192000 }) });
output.addAudioTrack(audioSource);
await output.start();