我正在尝试跟随这从我的树莓派中的麦克风传输音频。
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
我相信这显示了我所拥有的牌：
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
我想使用 seeed-2mic-voicecard 的麦克风。
谢谢您的帮助