avfilter_get_video_buffer  503 libavfilter/avfilter.h AVFilterPicRef *avfilter_get_video_buffer(AVFilterLink *link, int perms);
avfilter_get_video_buffer   79 libavfilter/defaults.c         out->outpic      = avfilter_get_video_buffer(out, AV_PERM_WRITE);