public static extern AVRational av_guess_frame_rate(AVFormatContext* ctx, AVStream* stream, AVFrame* frame);
public static extern AVProgram* av_new_program(AVFormatContext* s, int id);
public static extern void avdevice_capabilities_free(AVDeviceCapabilitiesQuery** caps, AVFormatContext* s);
public static extern int avdevice_dev_to_app_control_message(AVFormatContext* s, AVDevToAppMessageType type, void* data, uint data_size);
public static extern int avformat_match_stream_specifier(AVFormatContext* s, AVStream* st, String spec);
public static extern AVRational av_guess_sample_aspect_ratio(AVFormatContext* format, AVStream* stream, AVFrame* frame);
public static extern void av_dump_format(AVFormatContext* ic, int index, String url, int is_output);
public static extern int av_get_output_timestamp(AVFormatContext* s, int stream, long* dts, long* wall);
public static extern int av_read_frame(AVFormatContext* s, AVPacket* pkt);
public static extern int av_find_best_stream(AVFormatContext* ic, AVMediaType type, int wanted_stream_nb, int related_stream, AVCodec** decoder_ret, int flags);
public static extern AVProgram* av_find_program_from_stream(AVFormatContext* ic, AVProgram* last, int s);
public static extern int avformat_find_stream_info(AVFormatContext* ic, AVDictionary** options);
public static extern int av_demuxer_open(AVFormatContext* ic);
public static extern int avformat_open_input(AVFormatContext** ps, String filename, AVInputFormat* fmt, AVDictionary** options);
public static extern int avformat_alloc_output_context2(AVFormatContext** ctx, AVOutputFormat* oformat, String format_name, String filename);
public static extern int av_write_uncoded_frame_query(AVFormatContext* s, int stream_index);
public static extern int av_write_trailer(AVFormatContext* s);
public static extern int av_seek_frame(AVFormatContext* s, int stream_index, long timestamp, int flags);
public static extern int av_find_default_stream_index(AVFormatContext* s);
public static extern int avformat_seek_file(AVFormatContext* s, int stream_index, long min_ts, long ts, long max_ts, int flags);
public static extern int av_sdp_create(AVFormatContext** ac, int n_files, sbyte* /*String*/ buf, int size);
public static extern int av_read_pause(AVFormatContext* s);
public static extern void avformat_close_input(AVFormatContext** s);
public static extern int avformat_write_header(AVFormatContext* s, AVDictionary** options);
public static extern int avformat_queue_attached_pictures(AVFormatContext* s);
public static extern int av_interleaved_write_frame(AVFormatContext* s, AVPacket* pkt);
public static extern int avdevice_capabilities_create(AVDeviceCapabilitiesQuery** caps, AVFormatContext* s, AVDictionary** device_options);
public static extern int av_interleaved_write_uncoded_frame(AVFormatContext* s, int stream_index, AVFrame* frame);
public static extern int avdevice_list_devices(AVFormatContext* s, AVDeviceInfoList** device_list);
public static extern AVStream* avformat_new_stream(AVFormatContext* s, AVCodec* c);