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  • Streaming Webcam from Windows 10 to Ubuntu 18.04 via WSL2 and usbip [closed]

    15 juin 2021, par Jacob Dallas

    Background
    
Alright so I was able to set up my Windows 10 desktop with WSL2 in order to run Ubuntu 18.04. I'm trying to get the webcam to be accessible and have picked and pieced together the following tutorials in order to get myself to where I am.

    


    


    The Why
    
"Why would you go through this painstaking effort ? Seems dumb." you might be telling yourself. Well I think that it's dumb that WSL2 doesn't have a USB pass-through, so there's that. But I develop on Windows traditionally, and with a recent computer vision project I'm undertaking that incorporates the Nvidia Isaac SDK (only available on Ubuntu 18.04) I was hoping to continue to use Windows to develop, and then Ubuntu 18.04 to test. I'm trying to stay away from dual booting because switching back and forth between OSs is time-consuming.

    


    Current State
    
What I'm able to do is pass through the web camera using usbip from windows using the following commands
    
.\usbip.exe bind -b 1-189
    
.\usbipd.exe -d -4

    


    and then on the linux side I connect it by running
    
sudo usbip attach --remote=172.30.64.1 --busid=1-220
    
except that I put in my own remote address and busid

    


    What that results in is the ability to see that the camera is attached and seen by linux, but no matter what program/library I use, none of them are able to open the webcam

    


    Here are some outputs from different commands people have used to display camera information :

    


    ~$ v4l2-ctl --list-devices 
Logitech Webcam C930e (usb-vhci_hcd.0-1):
    /dev/video0
    /dev/video1

~$ v4l-info /dev/video0

### v4l2 device info [/dev/video0] ###
general info
    VIDIOC_QUERYCAP
    driver                  : "uvcvideo"
    card                    : "Logitech Webcam C930e"
    bus_info                : "usb-vhci_hcd.0-1"
    version                 : 4.19.84
    capabilities            : 0x84a00001 [VIDEO_CAPTURE,?,?,STREAMING,(null)]

standards

inputs
    VIDIOC_ENUMINPUT(0)
    index                   : 0
    name                    : "Camera 1"
    type                    : CAMERA
    audioset                : 0
    tuner                   : 0
    std                     : 0x0 []
    status                  : 0x0 []

video capture
    VIDIOC_ENUM_FMT(0,VIDEO_CAPTURE)
    index                   : 0
    type                    : VIDEO_CAPTURE
    flags                   : 0
    description             : "YUYV 4:2:2"
    pixelformat             : 0x56595559 [YUYV]
    VIDIOC_ENUM_FMT(1,VIDEO_CAPTURE)
    index                   : 1
    type                    : VIDEO_CAPTURE
    flags                   : 1
    description             : "Motion-JPEG"
    pixelformat             : 0x47504a4d [MJPG]
    VIDIOC_G_FMT(VIDEO_CAPTURE)
    type                    : VIDEO_CAPTURE
    fmt.pix.width           : 640
    fmt.pix.height          : 480
    fmt.pix.pixelformat     : 0x56595559 [YUYV]
    fmt.pix.field           : NONE
    fmt.pix.bytesperline    : 1280
    fmt.pix.sizeimage       : 614400
    fmt.pix.colorspace      : SRGB
    fmt.pix.priv            : 4276996862

controls
    VIDIOC_QUERYCTRL(BASE+0)
    id                      : 9963776
    type                    : INTEGER
    name                    : "Brightness"
    minimum                 : 0
    maximum                 : 255
    step                    : 1
    default_value           : 128
    flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+1)
    id                      : 9963777
    type                    : INTEGER
    name                    : "Contrast"
    minimum                 : 0
    maximum                 : 255
    step                    : 1
    default_value           : 128
    flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+2)
    id                      : 9963778
    type                    : INTEGER
    name                    : "Saturation"
    minimum                 : 0
    maximum                 : 255
    step                    : 1
    default_value           : 128
    flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+12)
    id                      : 9963788
    type                    : BOOLEAN
    name                    : "White Balance Temperature, Auto"
    minimum                 : 0
    maximum                 : 1
    step                    : 1
    default_value           : 1
    flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+19)
    id                      : 9963795
    type                    : INTEGER
    name                    : "Gain"
    minimum                 : 0
    maximum                 : 255
    step                    : 1
    default_value           : 0
    flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+24)
    id                      : 9963800
    type                    : MENU
    name                    : "Power Line Frequency"
    minimum                 : 0
    maximum                 : 2
    step                    : 1
    default_value           : 2
    flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+26)
    id                      : 9963802
    type                    : INTEGER
    name                    : "White Balance Temperature"
    minimum                 : 2000
    maximum                 : 7500
    step                    : 1
    default_value           : 4000
    flags                   : INACTIVE
    VIDIOC_QUERYCTRL(BASE+27)
    id                      : 9963803
    type                    : INTEGER
    name                    : "Sharpness"
    minimum                 : 0
    maximum                 : 255
    step                    : 1
    default_value           : 128
    flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+28)
    id                      : 9963804
    type                    : INTEGER
    name                    : "Backlight Compensation"
    minimum                 : 0
    maximum                 : 1
    step                    : 1
    default_value           : 0
    flags                   : unknown

~$ sudo ffmpeg -y -t 5 -f video4linux2  -i /dev/video0  out.mov
ffmpeg version 3.4.8-0ubuntu0.2 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
  configuration: --prefix=/usr --extra-version=0ubuntu0.2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
/dev/video0: Input/output error

~$ ffmpeg -f v4l2 -video_size 640x480 -i /dev/video0 -frames 1 out.jpg
ffmpeg version 3.4.8-0ubuntu0.2 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
  configuration: --prefix=/usr --extra-version=0ubuntu0.2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
/dev/video0: Input/output error


    

    


    I'm not sure if I don't have a specific library, driver, random other thing, but everything I've tried so far seems to not solve the problem.

    
Question
    
Linux sees the web camera, knows that it is a web camera, but is not processing the camera feed. What would you recommend I do to be able to process the video feed ? I think this is an issue with my settings when I originally set up linux with menuconfig.
Any help would be appreciated :)

    


  • ffmpeg performance on raspberry pi

    20 août 2021, par Rudi

    I'm running ffmpeg on a rasperry pi 4. I'm capturing the signal of an usb device.

    


    ffprobes output is :

    


    pi@skycam:~ $ ffprobe /dev/video0
ffprobe version 4.1.4-1+rpt7~deb10u1 Copyright (c) 2007-2019 the FFmpeg developers
  built with gcc 8 (Raspbian 8.3.0-6+rpi1)
  configuration: --prefix=/usr --extra-version='1+rpt7~deb10u1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared --libdir=/usr/lib/arm-linux-gnueabihf --cpu=arm1176jzf-s --arch=arm
  WARNING: library configuration mismatch
  avutil      configuration: --prefix=/usr --extra-version='1+rpt7~deb10u1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
  avcodec     configuration: --prefix=/usr --extra-version='1+rpt7~deb10u1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
  avformat    configuration: --prefix=/usr --extra-version='1+rpt7~deb10u1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
  avdevice    configuration: --prefix=/usr --extra-version='1+rpt7~deb10u1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
  avfilter    configuration: --prefix=/usr --extra-version='1+rpt7~deb10u1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
  avresample  configuration: --prefix=/usr --extra-version='1+rpt7~deb10u1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
  swscale     configuration: --prefix=/usr --extra-version='1+rpt7~deb10u1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
  swresample  configuration: --prefix=/usr --extra-version='1+rpt7~deb10u1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
  postproc    configuration: --prefix=/usr --extra-version='1+rpt7~deb10u1' --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs
  libavutil      56. 22.100 / 56. 22.100
  libavcodec     58. 35.100 / 58. 35.100
  libavformat    58. 20.100 / 58. 20.100
  libavdevice    58.  5.100 / 58.  5.100
  libavfilter     7. 40.101 /  7. 40.101
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  3.100 /  5.  3.100
  libswresample   3.  3.100 /  3.  3.100
  libpostproc    55.  3.100 / 55.  3.100
Input #0, video4linux2,v4l2, from '/dev/video0':
  Duration: N/A, start: 1230.660915, bitrate: 1990656 kb/s
    Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 1920x1080, 1990656 kb/s, 60 fps, 60 tbr, 1000k tbn, 1000k tbc


    


    the ffmpeg call i'm using is :

    


    bin/ffmpeg -loglevel quiet -re -f v4l2 -i /dev/video0 -tune zerolatency -preset ultrafast -pix_fmt yuv420p out.mkv


    


    put the framerate starts at around 20 and increases slowly to 36. Also when reviewing the output videos i feel like i see a bit of a framedrop so the video is not as smooth as the input.

    


    Is this due to a lack of power of the raspberry or are there any tweaks i could use to improve performance ? I don't care about the output format, framerate or resolution

    


    thank you very much

    


  • FFMPEG audio conversion is taking too much time

    26 octobre 2018, par Sachin Varma

    How to make the audio conversion ultrafast ?

    It is now taking more than 2 minutes for converting an audio around 2mb in size.

    The command i’m using for execution of conversion is

    String[] cmd = {"-y", "-i", audioPath, outputPath};

    How to preset the ultrafast mode ?

    While i’m trying it like

    String[] cmd = {"-y", "-i", audioPath,"-preset", "ultrafast" ,outputPath};

    It is taking same time itself.

    Using the library https://github.com/WritingMinds/ffmpeg-android-java

    Log :

    D : ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
    D : built with gcc 4.8 (GCC) D : configuration : —target-os=linux
    —cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi-
    —arch=arm —cpu=cortex-a8 —enable-runtime-cpudetect —sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot
    —enable-pic —enable-libx264 —enable-libass —enable-libfreetype —enable-libfribidi —enable-libmp3lame —enable-fontconfig —enable-pthreads —disable-debug —disable-ffserver —enable-version3 —enable-hardcoded-tables —disable-ffplay —disable-ffprobe —enable-gpl —enable-yasm —disable-doc —disable-shared —enable-static —pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config —prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a —extra-cflags=’-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include
    -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all’ —extra-ldflags=’-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib
    -Wl,-z,relro -Wl,-z,now -pie’ —extra-libs=’-lpng -lexpat -lm’ —extra-cxxflags= D : libavutil 55. 17.103 / 55. 17.103 D : libavcodec 57. 24.102 / 57. 24.102 D : libavformat 57. 25.100
    / 57. 25.100 D : libavdevice 57. 0.101 / 57. 0.101 D :
    libavfilter 6. 31.100 / 6. 31.100 D : libswscale 4. 0.100
    / 4. 0.100 D : libswresample 2. 0.101 / 2. 0.101 D :
    libpostproc 54. 0.100 / 54. 0.100 D : [mp3 @ 0xf2a25000] Skipping
    0 bytes of junk at 33. D : [mp3 @ 0xf2a25000] Estimating duration from
    bitrate, this may be inaccurate D : Input #0, mp3, from
    ’/storage/emulated/0/Bluetooth1/Aluva Puzha Song with Lyrics Premam
    Malayalam Movie Song 2015 ft Nivin Pauly.mp3’ : D : Metadata : D :
    encoder : Lavf52.64.2 D : Duration : 00:03:03.28, start :
    0.000000, bitrate : 128 kb/s D : Stream #0:0 : Audio : mp3, 44100 Hz, stereo, s16p, 128 kb/s D : Codec AVOption preset (Set the encoding
    preset (cf. x264 —fullhelp)) specified for output file #0
    (/storage/emulated/0/SACLO.m4a) has not been used for any stream. The
    most likely reason is either wrong type (e.g. a video option with no
    video streams) or that it is a private option of some encoder which
    was not actually used for any stream. D : Output #0, ipod, to
    ’/storage/emulated/0/SACLO.m4a’ : D : Metadata : D : encoder
     : Lavf57.25.100 D : Stream #0:0 : Audio : aac (LC) (mp4a /
    0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s D : Metadata : D :
    encoder : Lavc57.24.102 aac D : Stream mapping : D : Stream

    0:0 -> #0:0 (mp3 (native) -> aac (native)) D : Press [q] to stop, [?] for help D : size= 6kB time=00:00:01.78 bitrate= 25.6kbits/s

    speed=3.54x D : size= 18kB time=00:00:02.53 bitrate=
    57.1kbits/s speed=2.51x D : size= 30kB time=00:00:03.32 bitrate= 74.1kbits/s speed=2.18x D : size= 42kB
    time=00:00:04.08 bitrate= 84.9kbits/s speed=2.02x D : size=
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    1238kB time=00:01:19.87 bitrate= 127.0kbits/s speed=1.56x D : size=
    1251kB time=00:01:20.68 bitrate= 127.0kbits/s speed=1.56x D : size=
    1264kB time=00:01:21.52 bitrate= 127.0kbits/s speed=1.56x D : size=
    1276kB time=00:01:22.29 bitrate= 127.1kbits/s speed=1.56x D : size=
    1287kB time=00:01:22.94 bitrate= 127.1kbits/s speed=1.55x D : size=
    1298kB time=00:01:23.66 bitrate= 127.1kbits/s speed=1.54x D : size=
    1308kB time=00:01:24.26 bitrate= 127.1kbits/s speed=1.54x D : size=
    1321kB time=00:01:25.10 bitrate= 127.1kbits/s speed=1.54x D : size=
    1333kB time=00:01:25.91 bitrate= 127.1kbits/s speed=1.54x D : size=
    1345kB time=00:01:26.63 bitrate= 127.2kbits/s speed=1.54x D : size=
    1358kB time=00:01:27.39 bitrate= 127.3kbits/s speed=1.54x D : size=
    1370kB time=00:01:28.14 bitrate= 127.3kbits/s speed=1.54x D : size=
    1380kB time=00:01:28.76 bitrate= 127.3kbits/s speed=1.54x D : size=
    1388kB time=00:01:29.28 bitrate= 127.3kbits/s speed=1.53x D : size=
    1401kB time=00:01:30.11 bitrate= 127.4kbits/s speed=1.53x D : size=
    1408kB time=00:01:30.51 bitrate= 127.4kbits/s speed=1.53x D : size=
    1420kB time=00:01:31.32 bitrate= 127.4kbits/s speed=1.53x D : size=
    1432kB time=00:01:32.04 bitrate= 127.5kbits/s speed=1.53x D : size=
    1442kB time=00:01:32.67 bitrate= 127.5kbits/s speed=1.52x D : size=
    1455kB time=00:01:33.50 bitrate= 127.5kbits/s speed=1.53x D : size=
    1467kB time=00:01:34.24 bitrate= 127.5kbits/s speed=1.53x D : size=
    1480kB time=00:01:35.06 bitrate= 127.6kbits/s speed=1.53x D : size=
    1489kB time=00:01:35.57 bitrate= 127.6kbits/s speed=1.52x D : size=
    1499kB time=00:01:36.24 bitrate= 127.6kbits/s speed=1.52x D : size=
    1513kB time=00:01:37.05 bitrate= 127.7kbits/s speed=1.52x D : size=
    1527kB time=00:01:37.91 bitrate= 127.7kbits/s speed=1.52x D : size=
    1541kB time=00:01:38.80 bitrate= 127.7kbits/s speed=1.52x D : size=
    1554kB time=00:01:39.66 bitrate= 127.7kbits/s speed=1.52x D : size=
    1567kB time=00:01:40.51 bitrate= 127.7kbits/s speed=1.53x D : size=
    1580kB time=00:01:41.33 bitrate= 127.8kbits/s speed=1.53x D : size=
    1594kB time=00:01:42.19 bitrate= 127.8kbits/s speed=1.53x D : size=
    1607kB time=00:01:43.00 bitrate= 127.8kbits/s speed=1.53x D : size=
    1620kB time=00:01:43.83 bitrate= 127.8kbits/s speed=1.53x D : size=
    1633kB time=00:01:44.67 bitrate= 127.8kbits/s speed=1.53x D : size=
    1646kB time=00:01:45.53 bitrate= 127.8kbits/s speed=1.53x D : size=
    1659kB time=00:01:46.34 bitrate= 127.8kbits/s speed=1.53x D : size=
    1673kB time=00:01:47.18 bitrate= 127.8kbits/s speed=1.53x D : size=
    1686kB time=00:01:48.01 bitrate= 127.8kbits/s speed=1.53x D : size=
    1699kB time=00:01:48.85 bitrate= 127.8kbits/s speed=1.53x D : size=
    1712kB time=00:01:49.69 bitrate= 127.9kbits/s speed=1.53x D : size=
    1726kB time=00:01:50.57 bitrate= 127.9kbits/s speed=1.53x D : size=
    1740kB time=00:01:51.43 bitrate= 127.9kbits/s speed=1.54x D : size=
    1751kB time=00:01:52.12 bitrate= 127.9kbits/s speed=1.53x D : size=
    1764kB time=00:01:52.94 bitrate= 127.9kbits/s speed=1.54x D : size=
    1778kB time=00:01:53.87 bitrate= 127.9kbits/s speed=1.54x D : size=
    1790kB time=00:01:54.59 bitrate= 128.0kbits/s speed=1.54x D : size=
    1803kB time=00:01:55.40 bitrate= 128.0kbits/s speed=1.54x D : size=
    1816kB time=00:01:56.26 bitrate= 128.0kbits/s speed=1.54x D : size=
    1829kB time=00:01:57.07 bitrate= 128.0kbits/s speed=1.54x D : size=
    1842kB time=00:01:57.88 bitrate= 128.0kbits/s speed=1.54x D : size=
    1855kB time=00:01:58.70 bitrate= 128.0kbits/s speed=1.54x D : size=
    1866kB time=00:01:59.44 bitrate= 128.0kbits/s speed=1.54x D : size=
    1879kB time=00:02:00.27 bitrate= 128.0kbits/s speed=1.54x D : size=
    1892kB time=00:02:01.09 bitrate= 128.0kbits/s speed=1.54x D : size=
    1906kB time=00:02:01.92 bitrate= 128.0kbits/s speed=1.54x D : size=
    1918kB time=00:02:02.74 bitrate= 128.0kbits/s speed=1.54x D : size=
    1931kB time=00:02:03.57 bitrate= 128.0kbits/s speed=1.54x D : size=
    1945kB time=00:02:04.41 bitrate= 128.0kbits/s speed=1.54x D : size=
    1958kB time=00:02:05.22 bitrate= 128.1kbits/s speed=1.54x D : size=
    1971kB time=00:02:06.06 bitrate= 128.1kbits/s speed=1.54x D : size=
    1984kB time=00:02:06.87 bitrate= 128.1kbits/s speed=1.54x D : size=
    1995kB time=00:02:07.59 bitrate= 128.1kbits/s speed=1.54x D : size=
    2008kB time=00:02:08.42 bitrate= 128.1kbits/s speed=1.54x D : size=
    2022kB time=00:02:09.31 bitrate= 128.1kbits/s speed=1.54x D : size=
    2035kB time=00:02:10.14 bitrate= 128.1kbits/s speed=1.54x D : size=
    2048kB time=00:02:10.93 bitrate= 128.1kbits/s speed=1.55x D : size=
    2061kB time=00:02:11.75 bitrate= 128.1kbits/s speed=1.55x D : size=
    2074kB time=00:02:12.56 bitrate= 128.1kbits/s speed=1.55x D : size=
    2087kB time=00:02:13.39 bitrate= 128.1kbits/s speed=1.55x D : size=
    2100kB time=00:02:14.21 bitrate= 128.2kbits/s speed=1.55x D : size=
    2112kB time=00:02:15.00 bitrate= 128.2kbits/s speed=1.55x D : size=
    2125kB time=00:02:15.81 bitrate= 128.2kbits/s speed=1.55x D : size=
    2137kB time=00:02:16.53 bitrate= 128.2kbits/s speed=1.55x D : size=
    2150kB time=00:02:17.34 bitrate= 128.2kbits/s speed=1.55x D : size=
    2163kB time=00:02:18.18 bitrate= 128.2kbits/s speed=1.55x D : size=
    2175kB time=00:02:18.99 bitrate= 128.2kbits/s speed=1.55x D : size=
    2188kB time=00:02:19.80 bitrate= 128.2kbits/s speed=1.55x D : size=
    2200kB time=00:02:20.55 bitrate= 128.2kbits/s speed=1.55x D : size=
    2211kB time=00:02:21.17 bitrate= 128.3kbits/s speed=1.55x D : size=
    2221kB time=00:02:21.78 bitrate= 128.3kbits/s speed=1.54x D : size=
    2232kB time=00:02:22.52 bitrate= 128.3kbits/s speed=1.54x D : size=
    2246kB time=00:02:23.36 bitrate= 128.3kbits/s speed=1.54x D : size=
    2258kB time=00:02:24.10 bitrate= 128.3kbits/s speed=1.54x D : size=
    2270kB time=00:02:24.84 bitrate= 128.4kbits/s speed=1.54x D : size=
    2279kB time=00:02:25.42 bitrate= 128.4kbits/s speed=1.54x D : size=
    2288kB time=00:02:25.98 bitrate= 128.4kbits/s speed=1.54x D : size=
    2300kB time=00:02:26.72 bitrate= 128.4kbits/s speed=1.54x D : size=
    2308kB time=00:02:27.23 bitrate= 128.4kbits/s speed=1.53x D : size=
    2317kB time=00:02:27.77 bitrate= 128.5kbits/s speed=1.53x D : size=
    2327kB time=00:02:28.35 bitrate= 128.5kbits/s speed=1.53x D : size=
    2334kB time=00:02:28.77 bitrate= 128.5kbits/s speed=1.52x D : size=
    2342kB time=00:02:29.30 bitrate= 128.5kbits/s speed=1.52x D : size=
    2355kB time=00:02:30.11 bitrate= 128.5kbits/s speed=1.52x D : size=
    2364kB time=00:02:30.67 bitrate= 128.5kbits/s speed=1.52x D : size=
    2374kB time=00:02:31.27 bitrate= 128.5kbits/s speed=1.52x D : size=
    2386kB time=00:02:32.02 bitrate= 128.6kbits/s speed=1.52x D : size=
    2398kB time=00:02:32.76 bitrate= 128.6kbits/s speed=1.52x D : size=
    2411kB time=00:02:33.60 bitrate= 128.6kbits/s speed=1.52x D : size=
    2422kB time=00:02:34.27 bitrate= 128.6kbits/s speed=1.52x D : size=
    2435kB time=00:02:35.13 bitrate= 128.6kbits/s speed=1.52x D : size=
    2448kB time=00:02:35.87 bitrate= 128.6kbits/s speed=1.52x D : size=
    2460kB time=00:02:36.64 bitrate= 128.7kbits/s speed=1.52x D : size=
    2472kB time=00:02:37.40 bitrate= 128.7kbits/s speed=1.52x D : size=
    2485kB time=00:02:38.22 bitrate= 128.7kbits/s speed=1.52x D : size=
    2496kB time=00:02:38.89 bitrate= 128.7kbits/s speed=1.52x D : size=
    2509kB time=00:02:39.70 bitrate= 128.7kbits/s speed=1.52x D : size=
    2519kB time=00:02:40.35 bitrate= 128.7kbits/s speed=1.51x D : size=
    2530kB time=00:02:41.00 bitrate= 128.7kbits/s speed=1.51x D : size=
    2539kB time=00:02:41.61 bitrate= 128.7kbits/s speed=1.51x D : size=
    2553kB time=00:02:42.47 bitrate= 128.7kbits/s speed=1.51x D : size=
    2566kB time=00:02:43.28 bitrate= 128.7kbits/s speed=1.51x D : size=
    2578kB time=00:02:44.07 bitrate= 128.7kbits/s speed=1.51x D : size=
    2591kB time=00:02:44.86 bitrate= 128.7kbits/s speed=1.51x D : size=
    2602kB time=00:02:45.55 bitrate= 128.8kbits/s speed=1.51x D : size=
    2615kB time=00:02:46.39 bitrate= 128.8kbits/s speed=1.51x D : size=
    2628kB time=00:02:47.18 bitrate= 128.8kbits/s speed=1.51x D : size=
    2641kB time=00:02:47.99 bitrate= 128.8kbits/s speed=1.51x D : size=
    2649kB time=00:02:48.53 bitrate= 128.8kbits/s speed=1.51x D : size=
    2657kB time=00:02:49.04 bitrate= 128.8kbits/s speed=1.51x D : size=
    2671kB time=00:02:49.85 bitrate= 128.8kbits/s speed=1.51x D : size=
    2681kB time=00:02:50.50 bitrate= 128.8kbits/s speed=1.51x D : size=
    2691kB time=00:02:51.10 bitrate= 128.8kbits/s speed=1.51x D : size=
    2703kB time=00:02:51.89 bitrate= 128.8kbits/s speed=1.51x D : size=
    2716kB time=00:02:52.71 bitrate= 128.8kbits/s speed=1.51x D : size=
    2729kB time=00:02:53.47 bitrate= 128.9kbits/s speed=1.51x D : size=
    2741kB time=00:02:54.26 bitrate= 128.9kbits/s speed=1.51x D : size=
    2753kB time=00:02:55.00 bitrate= 128.9kbits/s speed=1.51x D : size=
    2766kB time=00:02:55.79 bitrate= 128.9kbits/s speed=1.51x D : size=
    2779kB time=00:02:56.65 bitrate= 128.9kbits/s speed=1.51x D : size=
    2792kB time=00:02:57.44 bitrate= 128.9kbits/s speed=1.51x D : size=
    2806kB time=00:02:58.32 bitrate= 128.9kbits/s speed=1.51x D : size=
    2819kB time=00:02:59.14 bitrate= 128.9kbits/s speed=1.51x D : size=
    2831kB time=00:02:59.90 bitrate= 128.9kbits/s speed=1.51x D : size=
    2844kB time=00:03:00.74 bitrate= 128.9kbits/s speed=1.51x D : size=
    2878kB time=00:03:03.27 bitrate= 128.6kbits/s speed=1.53x D :
    video:0kB audio:2846kB subtitle:0kB other streams:0kB global
    headers:0kB muxing overhead : 1.109895% D : [aac @ 0xf2a70c00] Qavg :
    2111.697

    Any help will be appreciated.

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