octave_ffmpeg_free >> Process file depending on ffmpeg-free
Audio
 ffmpeg_audio_open
 ffmpeg_audio_encode
 ffmpeg_audio_filter
 ffmpeg_audio_spectrum
 ffmpeg_audio_waveform
 ffmpeg_audio_features
 ffmpeg_lrc_parse
Video
 ffmpeg_video_open
 ffmpeg_video_filter
 ffmpeg_video_to_images
 ffmpeg_video_motion
 ffmpeg_video_scene
 ffmpeg_video_quality
ffmpeg-free avformat.h
 av_dump_format
 ffmpeg_save_audio_cover
 ffmpeg_side_data
Metadata
 ffmpeg_get_metadata
 ffmpeg_set_metadata
 ffmpeg_get_default_id3_metadata
 ffmpeg_get_attr
 ffmpeg_get_album
 ffmpeg_get_album_artist
 ffmpeg_get_artist
 ffmpeg_get_comment
 ffmpeg_get_composer
 ffmpeg_get_copyright
 ffmpeg_get_creation_time
 ffmpeg_get_date
 ffmpeg_get_disc
 ffmpeg_get_encoded_by
 ffmpeg_get_encoder
 ffmpeg_get_filename
 ffmpeg_get_genre
 ffmpeg_get_language
 ffmpeg_get_performer
 ffmpeg_get_publisher
 ffmpeg_get_service_name
 ffmpeg_get_service_provider
 ffmpeg_get_tagging_time
 ffmpeg_get_title
 ffmpeg_get_track
 ffmpeg_get_TYER
 ffmpeg_get_variant_bitrate
 ffmpeg_get_pixel_format
 ffmpeg_get_video_size
 ffmpeg_set_id3_struct_album
 ffmpeg_set_id3_struct_album_artist
 ffmpeg_set_id3_struct_artist
 ffmpeg_set_id3_struct_attr
 ffmpeg_set_id3_struct_comment
 ffmpeg_set_id3_struct_composer
 ffmpeg_set_id3_struct_copyright
 ffmpeg_set_id3_struct_creation_time
 ffmpeg_set_id3_struct_date
 ffmpeg_set_id3_struct_disc
 ffmpeg_set_id3_struct_encoded_by
 ffmpeg_set_id3_struct_encoder
 ffmpeg_set_id3_struct_genre
 ffmpeg_set_id3_struct_language
 ffmpeg_set_id3_struct_performer
 ffmpeg_set_id3_struct_publisher
 ffmpeg_set_id3_struct_title
 ffmpeg_set_id3_struct_track