avfilterLibName
AVFILTER_AUTO_CONVERT_ALL
AVFILTER_AUTO_CONVERT_NONE
AVFILTER_FLAG_DYNAMIC_INPUTS
AVFILTER_FLAG_DYNAMIC_OUTPUTS
AVFILTER_FLAG_SLICE_THREADS
AVFILTER_FLAG_SUPPORT_TIMELINE
AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
AVFILTER_THREAD_SLICE
AV_BUFFERSINK_FLAG_NO_REQUEST
AV_BUFFERSINK_FLAG_PEEK
AV_BUFFERSRC_FLAG_KEEP_REF
AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT
AV_BUFFERSRC_FLAG_PUSH