我正在使用 Kazam 录制视频。但是当我观看视频时，我注意到录制的声音比我说话的速度快得多（例如 10 秒变成了 2 秒）。我尝试了 RecordMyDesktop 软件，但问题仍然存在。有时它可以正常工作，但声音却不是那么快。
我尝试将 fps 从 15 改为 5 或从 15 改为 30，但结果仍然一样。我正在使用网络摄像头的麦克风录制（见下图）。当然，我没有使用“内置音频模拟立体声”。所有详细信息都在下面的屏幕截图中。
对不起，我的英语不好。
这是输出pacmd list-sources
3 source(s) available.
index: 0
name: <alsa_output.pci-0000_00_1b.0.analog-stereo.monitor>
driver: <module-alsa-card.c>
flags: DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
state: IDLE
suspend cause:
priority: 1950
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
volume steps: 65537
muted: no
current latency: 0.00 ms
max rewind: 64 KiB
sample spec: s16le 2ch 44100Hz
channel map: front-left,front-right
Stereo
used by: 0
linked by: 0
configured latency: 371.52 ms; range is 0.50 .. 371.52 ms
monitor_of: 0
card: 0 <alsa_card.pci-0000_00_1b.0>
module: 6
properties:
device.description = "Monitor of Built-in Audio Analog Stereo"
device.class = "monitor"
alsa.card = "0"
alsa.card_name = "HDA Intel"
alsa.long_card_name = "HDA Intel at 0xe04c0000 irq 24"
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 = "27d8"
device.product.name = "NM10/ICH7 Family High Definition Audio Controller"
device.form_factor = "internal"
device.string = "0"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
* index: 1
name: <alsa_input.pci-0000_00_1b.0.analog-stereo>
driver: <module-alsa-card.c>
flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
state: IDLE
suspend cause:
priority: 9959
volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% / 0.00 dB
balance 0.00
base volume: 17106 / 26% / -35.00 dB
volume steps: 65537
muted: no
current latency: 130.77 ms
max rewind: 0 KiB
sample spec: s16le 2ch 44100Hz
channel map: front-left,front-right
Stereo
used by: 0
linked by: 0
configured latency: 371.52 ms; range is 0.50 .. 371.52 ms
card: 0 <alsa_card.pci-0000_00_1b.0>
module: 6
properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALC260 Analog"
alsa.id = "ALC260 Analog"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "0"
alsa.card_name = "HDA Intel"
alsa.long_card_name = "HDA Intel at 0xe04c0000 irq 24"
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 = "27d8"
device.product.name = "NM10/ICH7 Family High Definition Audio Controller"
device.form_factor = "internal"
device.string = "front:0"
device.buffering.buffer_size = "65536"
device.buffering.fragment_size = "32768"
device.access_mode = "mmap+timer"
device.profile.name = "analog-stereo"
device.profile.description = "Analog Stereo"
device.description = "Built-in Audio Analog Stereo"
alsa.mixer_name = "Realtek ALC260"
alsa.components = "HDA:10ec0260,103c3011,00100400"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
ports:
analog-input-mic: Microphone (priority 8700, latency offset 0 usec, available: unknown)
properties:
device.icon_name = "audio-input-microphone"
analog-input-linein: Line In (priority 8100, latency offset 0 usec, available: no)
properties:
active port: <analog-input-mic>
index: 2
name: <alsa_input.usb-046d_0825_20169E00-02.analog-mono>
driver: <module-alsa-card.c>
flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
state: IDLE
suspend cause:
priority: 9049
volume: mono: 85979 / 131% / 7.07 dB
balance 0.00
base volume: 20724 / 32% / -30.00 dB
volume steps: 65537
muted: no
current latency: 69.22 ms
max rewind: 0 KiB
sample spec: s16le 1ch 48000Hz
channel map: mono
Mono
used by: 0
linked by: 0
configured latency: 2000.00 ms; range is 0.50 .. 2000.00 ms
card: 1 <alsa_card.usb-046d_0825_20169E00-02>
module: 7
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 = "USB Device 0x46d:0x825"
alsa.long_card_name = "USB Device 0x46d:0x825 at usb-0000:00:1d.7-6, high speed"
alsa.driver_name = "snd_usb_audio"
device.bus_path = "pci-0000:00:1d.7-usb-0:6:1.2"
sysfs.path = "/devices/pci0000:00/0000:00:1d.7/usb1/1-6/1-6:1.2/sound/card1"
udev.id = "usb-046d_0825_20169E00-02"
device.bus = "usb"
device.vendor.id = "046d"
device.vendor.name = "Logitech, Inc."
device.product.id = "0825"
device.product.name = "Webcam C270"
device.serial = "046d_0825_20169E00"
device.form_factor = "webcam"
device.string = "hw:1"
device.buffering.buffer_size = "192000"
device.buffering.fragment_size = "96000"
device.access_mode = "mmap+timer"
device.profile.name = "analog-mono"
device.profile.description = "Analog Mono"
device.description = "Webcam C270 Analog Mono"
alsa.mixer_name = "USB Mixer"
alsa.components = "USB046d:0825"
module-udev-detect.discovered = "1"
device.icon_name = "camera-web-usb"
ports:
analog-input-mic: Microphone (priority 8700, latency offset 0 usec, available: unknown)
properties:
device.icon_name = "audio-input-microphone"
active port: <analog-input-mic>