J'essaye d'enregistrer une partie de mon écran avec le son. Pour cela j'utilise ffmpeg avec la commande suivante :
ffmpeg -y -f alsa -i hw:0 -f x11grab -framerate 30 -video_size 300x168 -i :0.0+2,28 -c:v libx264 -pix_fmt yuv420p -qp 0 -preset ultrafast screen.avi
Une idée ?
Si je fais :
pactl list sources at 15:41:37
Source #0
State: IDLE
Name: alsa_output.pci-0000_00_1b.0.analog-stereo.monitor
Description: Monitor of Audio interne Stéréo analogique
Driver: module-alsa-card.c
Sample Specification: s16le 2ch 44100Hz
Channel Map: front-left,front-right
Owner Module: 7
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.pci-0000_00_1b.0.analog-stereo
Latency: 0 usec, configured 2000000 usec
Flags: DECIBEL_VOLUME LATENCY
Properties:
device.description = "Monitor of Audio interne Stéréo analogique"
device.class = "monitor"
alsa.card = "0"
alsa.card_name = "HDA Intel MID"
alsa.long_card_name = "HDA Intel MID at 0xdb100000 irq 27"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:1b.0"
sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0"
device.bus = "pci"
device.vendor.id = "8086"
device.vendor.name = "Intel Corporation"
device.product.id = "3b56"
device.product.name = "5 Series/3400 Series Chipset High Definition Audio"
device.form_factor = "internal"
device.string = "0"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
Formats:
pcm
Source #1
State: SUSPENDED
Name: alsa_input.pci-0000_00_1b.0.analog-stereo
Description: Audio interne Stéréo analogique
Driver: module-alsa-card.c
Sample Specification: s16le 2ch 48000Hz
Channel Map: front-left,front-right
Owner Module: 7
Mute: yes
Volume: front-left: 54394 / 83% / -4.86 dB, front-right: 54394 / 83% / -4.86 dB
balance 0.00
Base Volume: 8739 / 13% / -52.50 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 = "92HD75B3X5 Analog"
alsa.id = "92HD75B3X5 Analog"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "0"
alsa.card_name = "HDA Intel MID"
alsa.long_card_name = "HDA Intel MID at 0xdb100000 irq 27"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:1b.0"
sysfs.path = "/devices/pci0000:00/0000:00:1b.0/sound/card0"
device.bus = "pci"
device.vendor.id = "8086"
device.vendor.name = "Intel Corporation"
device.product.id = "3b56"
device.product.name = "5 Series/3400 Series Chipset High Definition Audio"
device.form_factor = "internal"
device.string = "front:0"
device.buffering.buffer_size = "352800"
device.buffering.fragment_size = "176400"
device.access_mode = "mmap+timer"
device.profile.name = "analog-stereo"
device.profile.description = "Stéréo analogique"
device.description = "Audio interne Stéréo analogique"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
Ports:
analog-input-internal-mic: Internal Microphone (type: Mic, priority: 8900, availability unknown)
analog-input-mic: Microphone (type: Mic, priority: 8700, not available)
Active Port: analog-input-internal-mic
Formats:
pcm