Various fixes

docs/guide/supported-formats-and-codecs.md

@@ -196,7 +196,60 @@ Codec encodability checks take [custom encoders](#custom-encoders) into account.
 
 ## Querying codec decodability
 
-Whether a codec can be decoded depends on the specific codec configuration of an `InputTrack`; you can use its [`canDecode`](./reading-media-files#codec-information) method to check.
+If you already have an `InputTrack`, you can check its decodability using its [`canDecode`](./reading-media-files#codec-information) method, which uses the track's actual codec configuration:
+```ts
+const canDecodeTrack = await inputTrack.canDecode(); // => boolean
+```
+
+However, you can also gauge decodability even in the absence of any concrete track. `canDecode` tests whether a codec can be decoded using typical settings:
+```ts
+import { canDecode } from 'mediabunny';
+
+canDecode('avc'); // => Promise<boolean>
+canDecode('opus'); // => Promise<boolean>
+```
+Video codecs are checked using 1280x720, while audio codecs are checked using 2 channels, 48 kHz.
+
+You can also check decodability using specific configurations:
+```ts
+import { canDecodeVideo, canDecodeAudio } from 'mediabunny';
+
+canDecodeVideo('hevc', {
+	codedWidth: 1920, codedHeight: 1080
+}); // => Promise<boolean>
+
+canDecodeAudio('aac', {
+	numberOfChannels: 1, sampleRate: 44100
+}); // => Promise<boolean>
+```
+
+All additional properties of [`VideoDecoderConfig`](https://developer.mozilla.org/en-US/docs/Web/API/VideoDecoder/configure#config) and [`AudioDecoderConfig`](https://developer.mozilla.org/en-US/docs/Web/API/AudioDecoder/configure#config) can be used here as well.
+
+---
+
+In addition, you can use the following functions to check decodability for multiple codecs at once, getting back a list of supported codecs:
+```ts
+import {
+	getDecodableCodecs,
+	getDecodableVideoCodecs,
+	getDecodableAudioCodecs,
+} from 'mediabunny';
+
+getDecodableCodecs(); // => Promise<MediaCodec[]>
+getDecodableVideoCodecs(); // => Promise<VideoCodec[]>
+getDecodableAudioCodecs(); // => Promise<AudioCodec[]>
+
+// These functions also accept optional configuration options.
+// Here, we check which of AVC, HEVC and VP8 can be decoded at 1920x1080:
+getDecodableVideoCodecs(
+	['avc', 'hevc', 'vp8'],
+	{ codedWidth: 1920, codedHeight: 1080 },
+); // => Promise<VideoCodec[]>
+```
+
+::: info
+Codec decodability checks take [custom decoders](#custom-decoders) into account.
+:::
 
 ## Custom coders