Function selectBestCodec

selectBestCodec(
    version: VersionInfo,
    registry: CapabilityRegistry,
    candidates: CodecCandidate[],
): string | null
Select the first available codec from a priority list. Useful for graceful degradation: try hardware first, fall back to software.
Parameters
- version: VersionInfo
- registry: CapabilityRegistry
- candidates: CodecCandidate[]
Returns string | null
Example
```
const codec = selectBestCodec(version, registry, [
  { codec: 'h264_nvenc', featureKey: 'nvenc' },
  { codec: 'h264_vaapi', featureKey: 'vaapi' },
  { codec: 'h264_mediacodec', featureKey: 'mediacodec' },
  { codec: 'libx264' },
]);
```
- Defined in src/compat/guards.ts:272