> $ ffmpeg -f avfoundation -framerate 30 -s 1280x720 -pixel_format yuyv422 -i > default -an -c:v libx264 -profile:v main -level 3.2 -preset medium -tune > zerolatency -b:v 2000k -flags +cgop+low_delay -movflags > empty_moov+omit_tfhd_offset+frag_keyframe+default_base_moof+isml -x264opts > keyint=250:no-scenecut -pix_fmt yuv420p -r 30 -f mp4 - > > > The above emits MOOF/MDAT atoms every 250 frames with a nice bitrate. The > atoms are sent to stdout only upon completion, i.e. the whole 250 GOP is > written at once. Is there any way to force buffers to be flushed more > frequently without increasing the number of i-frames? I would like to start > processing the data as soon as possible rather than having to wait for all > 250 frames to be processed.
You are creating fragments at each keyframe (-movflags frag_keyframe). There are other conditions you can use to create fragments, like -frag_duration and -frag_size. I don't think it is allowed for the moof to come after the mdat, so it's not possible to start emitting the mdat until the moof is complete. _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".