Camera board • UVC Camera FPS and libcamera api

Code:

wkeeling@pi5dev4g:~ $ v4l2-ctl --list-formats-ext -d /dev/video16ioctl: VIDIOC_ENUM_FMTType: Video Capture[0]: 'YUYV' (YUYV 4:2:2)Size: Discrete 640x480Interval: Discrete 0.033s (30.000 fps)Size: Discrete 352x288Interval: Discrete 0.033s (30.000 fps)Size: Discrete 320x240Interval: Discrete 0.033s (30.000 fps)Size: Discrete 160x120Interval: Discrete 0.033s (30.000 fps)Size: Discrete 1280x720Interval: Discrete 0.033s (30.000 fps)Size: Discrete 1280x960Interval: Discrete 0.033s (30.000 fps)[1]: 'MJPG' (Motion-JPEG, compressed)Size: Discrete 640x480Interval: Discrete 0.033s (30.000 fps)Size: Discrete 352x288Interval: Discrete 0.033s (30.000 fps)Size: Discrete 320x240Interval: Discrete 0.033s (30.000 fps)Size: Discrete 160x120Interval: Discrete 0.033s (30.000 fps)Size: Discrete 1280x720Interval: Discrete 0.033s (30.000 fps)Size: Discrete 1280x960Interval: Discrete 0.033s (30.000 fps)

Code:

wkeeling@pi5dev4g:~ $ ffmpeg -f v4l2 -video_size 640x480 -framerate 30 -t 10 -i /dev/video16 -pix_fmt yuv420p output1.mp4ffmpeg version 5.1.6-0+deb12u1+rpt1 Copyright (c) 2000-2024 the FFmpeg developers  built with gcc 12 (Debian 12.2.0-14)  configuration: --prefix=/usr --extra-version=0+deb12u1+rpt1 --toolchain=hardened --incdir=/usr/include/aarch64-linux-gnu --enable-gpl --disable-stripping --disable-mmal --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libglslang --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librist --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sand --enable-sdl2 --disable-sndio --enable-libjxl --enable-neon --enable-v4l2-request --enable-libudev --enable-epoxy --libdir=/usr/lib/aarch64-linux-gnu --arch=arm64 --enable-pocketsphinx --enable-librsvg --enable-libdc1394 --enable-libdrm --enable-vout-drm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-libplacebo --enable-librav1e --enable-shared  libavutil      57. 28.100 / 57. 28.100  libavcodec     59. 37.100 / 59. 37.100  libavformat    59. 27.100 / 59. 27.100  libavdevice    59.  7.100 / 59.  7.100  libavfilter     8. 44.100 /  8. 44.100  libswscale      6.  7.100 /  6.  7.100  libswresample   4.  7.100 /  4.  7.100  libpostproc    56.  6.100 / 56.  6.100Input #0, video4linux2,v4l2, from '/dev/video16':  Duration: N/A, start: 248911.357871, bitrate: 147456 kb/s  Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, 147456 kb/s, 30 fps, 30 tbr, 1000k tbnFile 'output1.mp4' already exists. Overwrite? [y/N] yStream mapping:  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))Press [q] to stop, [?] for help[libx264 @ 0x55564016b5c0] using cpu capabilities: ARMv8 NEON[libx264 @ 0x55564016b5c0] profile High, level 3.0, 4:2:0, 8-bit[libx264 @ 0x55564016b5c0] 264 - core 164 r3095 baee400 - H.264/MPEG-4 AVC codec - Copyleft 2003-2022 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00Output #0, mp4, to 'output1.mp4':  Metadata:    encoder         : Lavf59.27.100  Stream #0:0: Video: h264 (avc1 / 0x31637661), yuv420p(tv, progressive), 640x480, q=2-31, 30 fps, 15360 tbn    Metadata:      encoder         : Lavc59.37.100 libx264    Side data:      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/Aframe=  303 fps= 34 q=-1.0 Lsize=     927kB time=00:00:10.00 bitrate= 759.6kbits/s dup=217 drop=0 speed=1.11x    video:923kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.475213%[libx264 @ 0x55564016b5c0] frame I:2     Avg QP:20.23  size: 18476[libx264 @ 0x55564016b5c0] frame P:76    Avg QP:23.62  size: 11119[libx264 @ 0x55564016b5c0] frame B:225   Avg QP:25.24  size:   277[libx264 @ 0x55564016b5c0] consecutive B-frames:  1.0%  0.0%  0.0% 99.0%[libx264 @ 0x55564016b5c0] mb I  I16..4:  5.6% 69.5% 24.9%[libx264 @ 0x55564016b5c0] mb P  I16..4:  2.8%  3.5%  0.8%  P16..4: 50.3% 20.1% 16.2%  0.0%  0.0%    skip: 6.4%[libx264 @ 0x55564016b5c0] mb B  I16..4:  0.1%  0.1%  0.0%  B16..8:  6.2%  0.2%  0.1%  direct: 0.8%  skip:92.5%  L0:52.9% L1:42.6% BI: 4.5%[libx264 @ 0x55564016b5c0] 8x8 transform intra:54.9% inter:55.3%[libx264 @ 0x55564016b5c0] coded y,uvDC,uvAC intra: 32.9% 77.9% 62.7% inter: 9.2% 20.8% 8.5%[libx264 @ 0x55564016b5c0] i16 v,h,dc,p: 17% 18%  5% 59%[libx264 @ 0x55564016b5c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 23% 31%  3%  4%  3%  5%  3%  4%[libx264 @ 0x55564016b5c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 45% 10%  3%  3%  4%  5%  3%  5%[libx264 @ 0x55564016b5c0] i8c dc,h,v,p: 64% 19% 13%  5%[libx264 @ 0x55564016b5c0] Weighted P-Frames: Y:13.2% UV:9.2%[libx264 @ 0x55564016b5c0] ref P L0: 50.2% 11.5% 21.8% 15.5%  1.0%[libx264 @ 0x55564016b5c0] ref B L0: 83.8%  3.6% 12.5%[libx264 @ 0x55564016b5c0] ref B L1: 97.5%  2.5%[libx264 @ 0x55564016b5c0] kb/s:748.01