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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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docs/guide/supported-formats-and-codecs.md
+7 -5
View File
@@ -131,14 +131,14 @@ Video codecs are checked using 1280x720 @1Mbps, while audio codecs are checked u
You can also check encodability using specific configurations:
```ts
import { canEncodeVideo, canEncodeAudio } from 'mediabunny';
import { canEncodeVideo, canEncodeAudio, Quality } from 'mediabunny';
canEncodeVideo('hevc', {
width: 1920, height: 1080, bitrate: 1e7
width: 1920, height: 1080, quality: new Quality({ bitrate: 1e7 })
}); // => Promise<boolean>
canEncodeAudio('aac', {
numberOfChannels: 1, sampleRate: 44100, bitrate: 192e3
numberOfChannels: 1, sampleRate: 44100, quality: new Quality({ bitrate: 192e3 })
}); // => Promise<boolean>
```
@@ -153,6 +153,7 @@ import {
getEncodableVideoCodecs,
getEncodableAudioCodecs,
getEncodableSubtitleCodecs,
Quality,
} from 'mediabunny';
getEncodableCodecs(); // => Promise<MediaCodec[]>
@@ -164,7 +165,7 @@ getEncodableSubtitleCodecs(); // => Promise<SubtitleCodec[]>
// Here, we check which of AVC, HEVC and VP8 can be encoded at 1920x1080 @10Mbps:
getEncodableVideoCodecs(
['avc', 'hevc', 'vp8'],
{ width: 1920, height: 1080, bitrate: 1e7 },
{ width: 1920, height: 1080, quality: new Quality({ bitrate: 1e7 }) },
); // => Promise<VideoCodec[]>
```
@@ -176,6 +177,7 @@ import {
getFirstEncodableVideoCodec,
getFirstEncodableAudioCodec,
getFirstEncodableSubtitleCodec,
Quality,
} from 'mediabunny';
getFirstEncodableVideoCodec(['avc', 'vp9', 'av1']); // => Promise<VideoCodec | null>
@@ -183,7 +185,7 @@ getFirstEncodableAudioCodec(['opus', 'aac']); // => Promise<AudioCodec | null>
getFirstEncodableVideoCodec(
['avc', 'hevc', 'vp8'],
{ width: 1920, height: 1080, bitrate: 1e7 },
{ width: 1920, height: 1080, quality: new Quality({ bitrate: 1e7 }) },
); // => Promise<VideoCodec | null>
```