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• VIVALDI FFMPEG H264 CODEC NVIDIA Mac OS X 10.12.5 ERROR HTML5 VIDEOS

  30 septembre 2018, par Arthur Melo

  I’ve been suffering with the vivaldi browser when trying to run some videos, I believe they use codecs that vivaldi can not run using the architecture of my video card, or something of the genre.
  The error does not manifest when using the Safari or Chrome or even Opera browsers.
  Attached is the error
  

• usb capture device to "cast" stream

  6 juin 2021, par cubesareneat

  im using a raspberry pi with a usb capture device (dmesg -w below)

  


  [ 3825.105250] cx231xx 1-1.4:1.1: New device Geniatech Inc. Video Capture @ 480 Mbps (1f4d:0102) with 6 interfaces
[ 3825.105571] cx231xx 1-1.4:1.1: Identified as Geniatech OTG102 (card=17)
[ 3825.106698] i2c i2c-12: Added multiplexed i2c bus 14
[ 3825.106948] i2c i2c-12: Added multiplexed i2c bus 15
[ 3825.233031] cx25840 11-0044: cx23102 A/V decoder found @ 0x88 (cx231xx #0-0)
[ 3827.270228] cx25840 11-0044: loaded v4l-cx231xx-avcore-01.fw firmware (16382 bytes)
[ 3827.307022] cx231xx 1-1.4:1.1: v4l2 driver version 0.0.3
[ 3827.411911] cx231xx 1-1.4:1.1: Registered video device video0 [v4l2]
[ 3827.412183] cx231xx 1-1.4:1.1: Registered VBI device vbi0
[ 3827.418150] cx231xx 1-1.4:1.1: audio EndPoint Addr 0x83, Alternate settings: 3
[ 3827.418179] cx231xx 1-1.4:1.1: video EndPoint Addr 0x84, Alternate settings: 5
[ 3827.418203] cx231xx 1-1.4:1.1: VBI EndPoint Addr 0x85, Alternate settings: 2
[ 3827.418224] cx231xx 1-1.4:1.1: sliced CC EndPoint Addr 0x86, Alternate settings: 2


  


  i want to stream the audio to "cast" dose this protocol have a more specific name ? its the one that Spotify and YouTube can send audio video to over local network ; little screen with a wifi signal in the bottom left corner.

  


  i am thinking of going into ffmpeg or vlc to stream from usb to some cast program, dose anyone have any suggestions on where to start any key words so im not blindly googling ?
sorry this is so open ended, ill mark it solved with the best answer in like 5 days or when i finish this project ( turntable -> usb audio capture card on pi -> steam to cast protocol -> wifi speakers )

  


• How do I stream audio from a mic in a raspberry pi with FFmpeg ?

  23 mars 2024, par Ignacio

  I'm trying to follow this to stream audio from a mic in my raspberry pi.

  


  ignacio@pi-satellite-bigbedroom:~ $ ffmpeg -re -f pulse -ac 1 -i plughw:CARD=seeed2micvoicec,DEV=0 -f rtsp -rtsp_transport tcp rtsp://192.168.86.151:8554/live.stream
ffmpeg version 4.3.6-0+deb11u1+rpt5 Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 10 (Debian 10.2.1-6)
  configuration: --prefix=/usr --extra-version=0+deb11u1+rpt5 --toolchain=hardened --incdir=/usr/include/aarch64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --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-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --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-opencl --enable-opengl --enable-sdl2 --disable-mmal --enable-neon --enable-v4l2-request --enable-libudev --enable-epoxy --enable-sand --libdir=/usr/lib/aarch64-linux-gnu --arch=arm64 --enable-pocketsphinx --enable-libdc1394 --enable-libdrm --enable-vout-drm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
plughw:CARD=seeed2micvoicec,DEV=0: No such process


  


  I believe this shows the cards I have :

  


  ignacio@pi-satellite-bigbedroom:~ $ pactl list sources
Source #0
    State: SUSPENDED
    Name: alsa_output.platform-bcm2835_audio.analog-stereo.monitor
    Description: Monitor of Built-in Audio Analog Stereo
    Driver: module-alsa-card.c
    Sample Specification: s16le 2ch 44100Hz
    Channel Map: front-left,front-right
    Owner Module: 4
    Mute: no
    Volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% / 0.00 dB
            balance 0.00
    Base Volume: 65536 / 100% / 0.00 dB
    Monitor of Sink: alsa_output.platform-bcm2835_audio.analog-stereo
    Latency: 0 usec, configured 0 usec
    Flags: DECIBEL_VOLUME LATENCY 
    Properties:
        device.description = "Monitor of Built-in Audio Analog Stereo"
        device.class = "monitor"
        alsa.card = "0"
        alsa.card_name = "bcm2835 Headphones"
        alsa.long_card_name = "bcm2835 Headphones"
        alsa.driver_name = "snd_bcm2835"
        device.bus_path = "platform-bcm2835_audio"
        sysfs.path = "/devices/platform/soc/3f00b840.mailbox/bcm2835_audio/sound/card0"
        device.form_factor = "internal"
        device.string = "0"
        module-udev-detect.discovered = "1"
        device.icon_name = "audio-card"
    Formats:
        pcm

Source #1
    State: IDLE
    Name: alsa_output.platform-soc_sound.stereo-fallback.monitor
    Description: Monitor of Built-in Audio Stereo
    Driver: module-alsa-card.c
    Sample Specification: s16le 2ch 44100Hz
    Channel Map: front-left,front-right
    Owner Module: 12
    Mute: no
    Volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% / 0.00 dB
            balance 0.00
    Base Volume: 65536 / 100% / 0.00 dB
    Monitor of Sink: alsa_output.platform-soc_sound.stereo-fallback
    Latency: 0 usec, configured 2000000 usec
    Flags: DECIBEL_VOLUME LATENCY 
    Properties:
        device.description = "Monitor of Built-in Audio Stereo"
        device.class = "monitor"
        alsa.card = "2"
        alsa.card_name = "seeed-2mic-voicecard"
        alsa.long_card_name = "seeed-2mic-voicecard"
        alsa.driver_name = "snd_soc_simple_card"
        device.bus_path = "platform-soc:sound"
        sysfs.path = "/devices/platform/soc/soc:sound/sound/card2"
        device.form_factor = "internal"
        device.string = "2"
        module-udev-detect.discovered = "1"
        device.icon_name = "audio-card"
    Formats:
        pcm

Source #2
    State: RUNNING
    Name: alsa_input.platform-soc_sound.stereo-fallback
    Description: Built-in Audio Stereo
    Driver: module-alsa-card.c
    Sample Specification: s16le 2ch 44100Hz
    Channel Map: front-left,front-right
    Owner Module: 12
    Mute: no
    Volume: front-left: 32845 /  50% / -18.00 dB,   front-right: 32845 /  50% / -18.00 dB
            balance 0.00
    Base Volume: 20724 /  32% / -30.00 dB
    Monitor of Sink: n/a
    Latency: 688 usec, configured 10000 usec
    Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 
    Properties:
        alsa.resolution_bits = "16"
        device.api = "alsa"
        device.class = "sound"
        alsa.class = "generic"
        alsa.subclass = "generic-mix"
        alsa.name = "bcm2835-i2s-wm8960-hifi wm8960-hifi-0"
        alsa.id = "bcm2835-i2s-wm8960-hifi wm8960-hifi-0"
        alsa.subdevice = "0"
        alsa.subdevice_name = "subdevice #0"
        alsa.device = "0"
        alsa.card = "2"
        alsa.card_name = "seeed-2mic-voicecard"
        alsa.long_card_name = "seeed-2mic-voicecard"
        alsa.driver_name = "snd_soc_simple_card"
        device.bus_path = "platform-soc:sound"
        sysfs.path = "/devices/platform/soc/soc:sound/sound/card2"
        device.form_factor = "internal"
        device.string = "hw:2"
        device.buffering.buffer_size = "352800"
        device.buffering.fragment_size = "176400"
        device.access_mode = "mmap+timer"
        device.profile.name = "stereo-fallback"
        device.profile.description = "Stereo"
        device.description = "Built-in Audio Stereo"
        module-udev-detect.discovered = "1"
        device.icon_name = "audio-card"
    Ports:
        analog-input: Analog Input (type: Analog, priority: 10000, availability unknown)
    Active Port: analog-input
    Formats:
        pcm


  


  I want to use the mic from the seeed-2mic-voicecard.

  


  Thanks for the help