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• avcodec/nvenc : unify CBR filler data insertion for all codecs

  31 mars, par Cameron Gutman

  avcodec/nvenc : unify CBR filler data insertion for all codecs
  Previously, AV1 used filler data with CBR by default while H.264
  
  and HEVC may or may not depending on driver version. Make this
  
  consistent by using not filler data in CBR mode for all codecs.
  Since there are valid reasons to use CBR with or without filler,
  
  also add a cbr_padding option to allow users to override this.
  Signed-off-by : Cameron Gutman <aicommander@gmail.com>
  
  Signed-off-by : Timo Rothenpieler <timo@rothenpieler.org>
  

  • [DH] libavcodec/nvenc.c
  • [DH] libavcodec/nvenc.h
  • [DH] libavcodec/nvenc_av1.c
  • [DH] libavcodec/nvenc_h264.c
  • [DH] libavcodec/nvenc_hevc.c
  • [DH] libavcodec/version.h

• How to record the bluetooth audio from my phone in my pc using ffmpeg ?

  12 septembre 2023, par Juan Inzunza

  I have my phone connected via Bluetooth to my PC and playing audio in my phone so i can hear that audio in my pc and i was trying to record that audio in my PC using ffmpeg this is the command i got so far

  


  ffmpeg -f pulse -ac 1 -ar 44100 -i alsa_input.usb-KTMicro_KT_USB_Audio_2021-06-25-0000-0000-0000--00.mono-fallback -f pulse -ac 2 -ar 44100 -i bluez_source.84_5F_04_75_B9_F6.a2dp_source -filter_complex amix=inputs=2 -i /dev/video5 -s 640x480 -vcodec libx264 -preset veryfast -crf 18 -acodec libmp3lame -ar 44100 -q:a 1 -pix_fmt yuv420p -aq 0 ~/Videos


  


  "bluez_source.84_5F_04_75_B9_F6.a2dp_source" is the name of the bluetooth audio source (my phone) but the problem is, if i am not playing audio on the device, just disappears when i execute this command "pactl list sources", and appears again when i play audio, so is listed when i run "pactl list sources" and i have to keep the phone playing audio so ffmpeg recognizes that device and not fail when executed.

  


  Finally my question is how can i keep that device in running state or suspended state without need to play audio all the time.

  


  gandalf@Mordor:~$ pactl list sources
Source #64
    State: IDLE
    Name: alsa_output.usb-KTMicro_KT_USB_Audio_2021-06-25-0000-0000-0000--00.analog-stereo.monitor
    Description: Monitor of KT USB Audio Analog Stereo
    Driver: module-alsa-card.c
    Sample Specification: s16le 2ch 44100Hz
    Channel Map: front-left,front-right
    Owner Module: 85
    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.usb-KTMicro_KT_USB_Audio_2021-06-25-0000-0000-0000--00.analog-stereo
    Latency: 0 usec, configured 2000000 usec
    Flags: DECIBEL_VOLUME LATENCY 
    Properties:
        device.description = "Monitor of KT USB Audio Analog Stereo"
        device.class = "monitor"
        alsa.card = "1"
        alsa.card_name = "KT USB Audio"
        alsa.long_card_name = "KTMicro KT USB Audio at usb-0000:03:00.3-3, full speed"
        alsa.driver_name = "snd_usb_audio"
        device.bus_path = "pci-0000:03:00.3-usb-0:3:1.0"
        sysfs.path = "/devices/pci0000:00/0000:00:08.1/0000:03:00.3/usb1/1-3/1-3:1.0/sound/card1"
        udev.id = "usb-KTMicro_KT_USB_Audio_2021-06-25-0000-0000-0000--00"
        device.bus = "usb"
        device.vendor.id = "12d1"
        device.vendor.name = "Huawei Technologies Co., Ltd."
        device.product.id = "0010"
        device.product.name = "KT USB Audio"
        device.serial = "KTMicro_KT_USB_Audio_2021-06-25-0000-0000-0000-"
        device.string = "1"
        module-udev-detect.discovered = "1"
        device.icon_name = "audio-card-usb"
    Formats:
        pcm

Source #65
    State: SUSPENDED
    Name: alsa_input.usb-KTMicro_KT_USB_Audio_2021-06-25-0000-0000-0000--00.mono-fallback
    Description: KT USB Audio Mono
    Driver: module-alsa-card.c
    Sample Specification: s16le 1ch 44100Hz
    Channel Map: mono
    Owner Module: 85
    Mute: no
    Volume: mono: 65536 / 100% / 0.00 dB
            balance 0.00
    Base Volume: 65536 / 100% / 0.00 dB
    Monitor of Sink: n/a
    Latency: 0 usec, configured 0 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 = "USB Audio"
        alsa.id = "USB Audio"
        alsa.subdevice = "0"
        alsa.subdevice_name = "subdevice #0"
        alsa.device = "0"
        alsa.card = "1"
        alsa.card_name = "KT USB Audio"
        alsa.long_card_name = "KTMicro KT USB Audio at usb-0000:03:00.3-3, full speed"
        alsa.driver_name = "snd_usb_audio"
        device.bus_path = "pci-0000:03:00.3-usb-0:3:1.0"
        sysfs.path = "/devices/pci0000:00/0000:00:08.1/0000:03:00.3/usb1/1-3/1-3:1.0/sound/card1"
        udev.id = "usb-KTMicro_KT_USB_Audio_2021-06-25-0000-0000-0000--00"
        device.bus = "usb"
        device.vendor.id = "12d1"
        device.vendor.name = "Huawei Technologies Co., Ltd."
        device.product.id = "0010"
        device.product.name = "KT USB Audio"
        device.serial = "KTMicro_KT_USB_Audio_2021-06-25-0000-0000-0000-"
        device.string = "hw:1"
        device.buffering.buffer_size = "176400"
        device.buffering.fragment_size = "88200"
        device.access_mode = "mmap+timer"
        device.profile.name = "mono-fallback"
        device.profile.description = "Mono"
        device.description = "KT USB Audio Mono"
        module-udev-detect.discovered = "1"
        device.icon_name = "audio-card-usb"
    Ports:
        analog-input-mic: Microphone (type: Mic, priority: 8700, availability unknown)
    Active Port: analog-input-mic
    Formats:
        pcm

Source #68
    State: RUNNING
    Name: bluez_source.84_5F_04_75_B9_F6.a2dp_source
    Description: Juan's S20 FE
    Driver: module-bluez5-device.c
    Sample Specification: s16le 2ch 44100Hz
    Channel Map: front-left,front-right
    Owner Module: 23
    Mute: no
    Volume: front-left: 53151 /  81% / -5.46 dB,   front-right: 53151 /  81% / -5.46 dB
            balance 0.00
    Base Volume: 65536 / 100% / 0.00 dB
    Monitor of Sink: n/a
    Latency: 68928 usec, configured 68537 usec
    Flags: HARDWARE DECIBEL_VOLUME LATENCY 
    Properties:
        bluetooth.protocol = "a2dp_source"
        bluetooth.codec = "sbc"
        device.description = "Juan's S20 FE"
        device.string = "84:5F:04:75:B9:F6"
        device.api = "bluez"
        device.class = "sound"
        device.bus = "bluetooth"
        device.form_factor = "phone"
        bluez.path = "/org/bluez/hci0/dev_84_5F_04_75_B9_F6"
        bluez.class = "0x5a020c"
        bluez.alias = "Juan's S20 FE"
        device.icon_name = "audio-card-bluetooth"
    Ports:
        phone-input: Phone (type: Phone, priority: 0, available)
    Active Port: phone-input
    Formats:
        pcm


  


  This is the error i am getting when there's no playing audio in my phone.

  


  ffmpeg version 4.4.2-0ubuntu0.22.04.1 Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 11 (Ubuntu 11.2.0-19ubuntu1)
  configuration: --prefix=/usr --extra-version=0ubuntu0.22.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --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-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --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-sdl2 --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Guessed Channel Layout for Input Stream #0.0 : mono
Input #0, pulse, from 'alsa_input.usb-KTMicro_KT_USB_Audio_2021-06-25-0000-0000-0000--00.mono-fallback':
  Duration: N/A, start: 1694557964.268337, bitrate: 705 kb/s
  Stream #0:0: Audio: pcm_s16le, 44100 Hz, mono, s16, 705 kb/s
bluez_source.84_5F_04_75_B9_F6.a2dp_source: Input/output error



  


• why am i getting very low encoding bitrate using vaapi in ffmpeg

  19 janvier 2021, par ohroblot

  I am using this command :

  


  ffmpeg -y \
-vaapi_device /dev/dri/renderD128 \
-loop 1 -r 1 -i ./image.jpg -pix_fmt vaapi_vld \                                          
-b:v 18000k -minrate 18000k \
-vf 'format=nv12|vaapi,hwupload,scale_vaapi=w=1280:h=720' \ 
-rc_mode 3 \
-r 30 -g 60 \
-c:v h264_vaapi -f flv /dev/null


  


  I am getting very low bitrate with this, the bitrate is as low as 100Kbits/s. I get faster encoding using libx264 and my cpu. Is it an underpowered GPU ? am I missing some ffmpeg arguments ?

  


  I am not sure what's going on, could this be an issue with linux, mesa drivers, did i miss some options when I compiled ffmpeg ?

  


  vainfo

  


  error: can't connect to X server!
libva info: VA-API version 1.8.0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/radeonsi_drv_video.so
libva info: Found init function __vaDriverInit_1_8
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.8 (libva 2.8.0)
vainfo: Driver version: Mesa Gallium driver 20.2.6 for AMD Radeon (TM) RX 480 Graphics (POLARIS10, DRM 3.38.0, 5.8.0-7630-generic, LLVM 11.0.0)
vainfo: Supported profile and entrypoints
      VAProfileMPEG2Simple            : VAEntrypointVLD
      VAProfileMPEG2Main              : VAEntrypointVLD
      VAProfileVC1Simple              : VAEntrypointVLD
      VAProfileVC1Main                : VAEntrypointVLD
      VAProfileVC1Advanced            : VAEntrypointVLD
      VAProfileH264ConstrainedBaseline: VAEntrypointVLD
      VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
      VAProfileH264Main               : VAEntrypointVLD
      VAProfileH264Main               : VAEntrypointEncSlice
      VAProfileH264High               : VAEntrypointVLD
      VAProfileH264High               : VAEntrypointEncSlice
      VAProfileHEVCMain               : VAEntrypointVLD
      VAProfileHEVCMain               : VAEntrypointEncSlice
      VAProfileHEVCMain10             : VAEntrypointVLD
      VAProfileJPEGBaseline           : VAEntrypointVLD
      VAProfileNone                   : VAEntrypointVideoProc


  


  ffmpeg -buildconf

  


  ffmpeg version N-100671-gc48110a4a4 Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 10 (Ubuntu 10.2.0-13ubuntu1)
  configuration: --prefix=/home/_user/Dev/ffmpeg_build/build --extra-cflags='-I/home/_user/Dev/ffmpeg_build/build/include -I/usr/include' --extra-ldflags='-L/home/_user/Dev/ffmpeg_build/build/lib -L/home/_user/Dev/ffmpeg_build/build/lib/x86_64-linux-gnu -Wl,-rpath=/home/_user/Dev/ffmpeg_build/build/lib/x86_64-linux-gnu -ldrm -L/usr/lib' --pkg-config-flags=--static --extra-libs='-lpthread -lm' --bindir=/home/_user/Dev/ffmpeg_build/bin --arch=amd64 --disable-shared --disable-ffprobe --disable-ffplay --disable-gnutls --enable-openssl --enable-zlib --enable-librtmp --enable-static --enable-chromaprint --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree --enable-vdpau --enable-ladspa --enable-libaom --enable-libbs2b --enable-libcaca --enable-libcodec2 --enable-libdav1d --enable-libfontconfig --enable-libfribidi --enable-libgme --enable-libopenjpeg --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libwebp --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-libass --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-librabbitmq --enable-libvorbis --enable-libvpx --enable-libflite --enable-chromaprint --enable-frei0r
  libavutil      56. 63.101 / 56. 63.101
  libavcodec     58.117.101 / 58.117.101
  libavformat    58. 65.101 / 58. 65.101
  libavdevice    58. 11.103 / 58. 11.103
  libavfilter     7. 96.100 /  7. 96.100
  libswscale      5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
  libpostproc    55.  8.100 / 55.  8.100

  configuration:
    --prefix=/home/_user/Dev/ffmpeg_build/build
    --extra-cflags='-I/home/_user/Dev/ffmpeg_build/build/include -I/usr/include'
    --extra-ldflags='-L/home/_user/Dev/ffmpeg_build/build/lib -L/home/_user/Dev/ffmpeg_build/build/lib/x86_64-linux-gnu -Wl,-rpath=/home/_user/Dev/ffmpeg_build/build/lib/x86_64-linux-gnu -ldrm -L/usr/lib'
    --pkg-config-flags=--static
    --extra-libs='-lpthread -lm'
    --bindir=/home/_user/Dev/ffmpeg_build/bin
    --arch=amd64
    --disable-shared
    --disable-ffprobe
    --disable-ffplay
    --disable-gnutls
    --enable-openssl
    --enable-zlib
    --enable-librtmp
    --enable-static
    --enable-chromaprint
    --enable-gpl
    --enable-libass
    --enable-libfdk-aac
    --enable-libfreetype
    --enable-libmp3lame
    --enable-libopus
    --enable-libvorbis
    --enable-libvpx
    --enable-libx264
    --enable-libx265
    --enable-nonfree
    --enable-vdpau
    --enable-ladspa
    --enable-libaom
    --enable-libbs2b
    --enable-libcaca
    --enable-libcodec2
    --enable-libdav1d
    --enable-libfontconfig
    --enable-libfribidi
    --enable-libgme
    --enable-libopenjpeg
    --enable-librsvg
    --enable-librubberband
    --enable-libshine
    --enable-libsnappy
    --enable-libsoxr
    --enable-libspeex
    --enable-libsrt
    --enable-libssh
    --enable-libtheora
    --enable-libtwolame
    --enable-libvidstab
    --enable-libwebp
    --enable-libxml2
    --enable-libxvid
    --enable-libzmq
    --enable-libzvbi
    --enable-lv2
    --enable-omx
    --enable-openal
    --enable-opencl
    --enable-opengl
    --enable-sdl2
    --enable-pocketsphinx
    --enable-libdc1394
    --enable-libdrm
    --enable-libiec61883
    --enable-libass
    --enable-libfreetype
    --enable-libgsm
    --enable-libmp3lame
    --enable-libmysofa
    --enable-libopenjpeg
    --enable-libopenmpt
    --enable-libopus
    --enable-librabbitmq
    --enable-libvorbis
    --enable-libvpx
    --enable-libflite
    --enable-chromaprint
    --enable-frei0r


  


  a link to full logs : http://0x0.st/-i2j.txt