Recherche avancée

Sur d’autres sites (8600)

• 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



  


• Anomalie #3811 (Nouveau) : Sur le Wiki de Contrib = versionning apparent incorrect !

  24 juillet 2016, par YannX DYX

  Bonsoir,
  au passage /je rajoutais une suggestion sur le Carnet/ j’ai aperçu un soulignement pas exact lors de l’examen de versionning d’article :
  https://contrib.spip.net/ecrire/?exec=article&id_article=4088

  Voici le texte exact qui avait été rajouté :
  

  viser l’intégration de http://www.templatemo.com/tm-455-vi... (avec une sous-couche de mapping &lt ;code&gt ;.less&lt ;/code&gt ; pour faire correspondre les styles spipr/Z-core aux styles de Visual Admin)..
  

  L’image d’extrait prend en fait deux modifications : voir piece jointe...
  pour le lien [1]

  Serait-ce dû à la présence de la balise cachée .less!! dans le texte inséré ??

• FFMPEG add circular mask to videos, convert to black and white and concatenate

  3 mai 2018, par Yassine

  Hello everyone i’m a beginner and i would appreciate your help.

  I’m making a mobile application that generates custom video resumes based on the user’s videos taken from his phone, the user has to upload 5 different videos to the server from the mobile application, in the server side i want to :

  • Add a .png circular mask to each video.
  • Make each video black and white.

  • Concatenate the videos with other already existing title videos
    (e.g [userVideo1] [title1] [userVideo2] [title2]...) Visual Example

    [Edit : I would like more features]

  • Add background music
  • Add watermark logo in the middle
  • Remove silent footage from the beginning and from the end
  • Some input videos might be rotated, i want to rotate videos back to normal if they are rotated.

  So far i managed to add the circular mask, make the videos black and white and concatenate 3 videos including a premade title video, but the second user video has no sound in the output.

  This is the script i ended up with :

  ffmpeg -i uservid1.mov -i uservid2.mp4 -i mask.png -i title1.mp4  -preset 
  
  ultrafast -filter_complex "
  
  
  
  [2:v][0:v]scale2ref[s1][s2];     
  
  [s2][s1]overlay[vid1];  
  
  [2:v][1:v]scale2ref[s3][s4]; 
  
  [s4][s3]overlay[vid2];  
  
  [vid1]hue=s=0[v0]; 
  
  [vid2]hue=s=0[v1];  
  
  [v0]scale=720x400[in0]; 
  
  [v1]scale=720x400[in1]; 
  
  [3:v]scale=720x400[in3]; 
  
  [in0]setsar=sar=0[final0]; 
  
  [in1]setsar=sar=0[final1];      
  
  [in3]setsar=sar=0[final3]; 
  
  [final0][final3][final1]concat=n=3;"
  
  
  
  -codec:a copy finalCV.mp4