public static extern libavfilter.AVFilterBufferRef *avfilter_get_buffer_ref_from_frame(libavutil.AVMediaType type, libavcodec.AVFrame * frame, int perms);
public static extern int avfilter_fill_frame_from_audio_buffer_ref(libavcodec.AVFrame *frame, libavfilter.AVFilterBufferRef *samplesref);
public static extern libavfilter.AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_frame(libavcodec.AVFrame * frame, int perms);
public static extern int avfilter_copy_buf_props(libavcodec.AVFrame *dst, libavfilter.AVFilterBufferRef *src);
public static extern int av_buffersrc_add_frame(libavfilter.AVFilterContext *buffer_src, libavcodec.AVFrame *frame, int flags);
public static extern int avfilter_fill_frame_from_video_buffer_ref(libavcodec.AVFrame *frame, libavfilter.AVFilterBufferRef *picref);
public static extern int av_buffersrc_write_frame(libavfilter.AVFilterContext *s, libavcodec.AVFrame *frame);