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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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examples/hls-transcoding/hls-transcoding.ts
+13 -17
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@@ -1,19 +1,15 @@
import {
Input,
ALL_FORMATS,
BlobSource,
UrlSource,
BufferTarget,
Conversion,
HlsOutputFormat,
Input,
MpegTsOutputFormat,
Output,
PathedTarget,
BufferTarget,
HlsOutputFormat,
MpegTsOutputFormat,
Conversion,
QUALITY_VERY_HIGH,
QUALITY_HIGH,
QUALITY_MEDIUM,
QUALITY_LOW,
QUALITY_VERY_LOW,
Quality,
UrlSource,
} from 'mediabunny';
import { registerAc3Decoder } from '@mediabunny/ac3';
import { registerProresDecoder } from '@mediabunny/prores';
@@ -101,14 +97,14 @@ const convertToHls = async (resource: File | string) => {
output,
tracks: 'primary', // Use only the primary video and audio tracks of the input
video: [
{ codec: 'avc', height: 1080, bitrate: QUALITY_VERY_HIGH },
{ codec: 'avc', height: 720, bitrate: QUALITY_HIGH },
{ codec: 'avc', height: 480, bitrate: QUALITY_MEDIUM },
{ codec: 'avc', height: 360, bitrate: QUALITY_LOW },
{ codec: 'avc', height: 240, bitrate: QUALITY_VERY_LOW },
{ codec: 'avc', height: 1080, quality: new Quality('very-high') },
{ codec: 'avc', height: 720, quality: new Quality('high') },
{ codec: 'avc', height: 480, quality: new Quality('medium') },
{ codec: 'avc', height: 360, quality: new Quality('low') },
{ codec: 'avc', height: 240, quality: new Quality('very-low') },
],
audio: [
{ codec: 'aac', bitrate: QUALITY_HIGH },
{ codec: 'aac', quality: new Quality('high') },
],
});