pub fn codec_string_from_init(init_path: &Path) -> Result<String>Expand description
Parse the HLS CODECS= string for a rendition from its init segment,
dispatching on the visual sample entry: av01 → AV1 sequence header,
avc1/avc3 → avcC profile/level, hvc1/hev1 → hvcC profile-tier-level.