mov: Refactor codec id selection in mov_codec_id
mov: Refactor video specific parsing in mov_parse_stsd_video
mov: Refactor audio specific parsing in mov_parse_stsd_audio
mov: Refactor subtitle specific parsing in mov_parse_stsd_subtitle
mov: Refactor codec specific final steps in mov_finalize_stsd_codec
mov: Refactor multiple stsd skipping in mov_mov_skip_multiple_stsd
mov: Parse tmcd extradata
mov: Write tmcd extradata