H.264 is a video codec. If you mean AAC or MP3, which are usually used in the audio track along side H.264 in an MP4 or MP2-TS container, nobody outside of low

H.264 is a video codec. If you mean AAC or MP3, which are usually used in the audio track along side H.264 in an MP4 or MP2-TS container, nobody outside of low power/embedded bothers to decode the audio codec in hardware, it's just not worth it.