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Every time I record my screen, and PC audio, the audio is always distorted. It will sound deeper and slower than it did when it was playing live. The issue is that this is a sudden problem, only starting just a few days ago. For months it recorded audio just fine and I'm at a loss to explain this or think of a fix.

Does anyone have any ideas? Or does anyone know where I can start looking for answers?

Here is the output of pulseaudio --dump-conf:

### Read from configuration file: /etc/pulse/daemon.conf ###
daemonize = no
fail = yes
high-priority = yes
nice-level = -11
realtime-scheduling = yes
realtime-priority = 5
allow-module-loading = yes
allow-exit = yes
use-pid-file = yes
system-instance = no
local-server-type = user
cpu-limit = no
enable-shm = yes
flat-volumes = no
lock-memory = no
exit-idle-time = 20
scache-idle-time = 20
dl-search-path = /usr/lib/pulse-4.0/modules
default-script-file = /etc/pulse/default.pa
load-default-script-file = yes
log-target = auto
log-level = notice
resample-method = speex-float-1
enable-remixing = yes
enable-lfe-remixing = no
default-sample-format = s16le
default-sample-rate = 44100
alternate-sample-rate = 48000
default-sample-channels = 2
default-channel-map = front-left,front-right
default-fragments = 8
default-fragment-size-msec = 10
enable-deferred-volume = yes
deferred-volume-safety-margin-usec = 1
deferred-volume-extra-delay-usec = 0
shm-size-bytes = 0
log-meta = no
log-time = no
log-backtrace = 0
rlimit-fsize = -1
rlimit-data = -1
rlimit-stack = -1
rlimit-core = -1
rlimit-rss = -1
rlimit-as = -1
rlimit-nproc = -1
rlimit-nofile = 256
rlimit-memlock = -1
rlimit-locks = -1
rlimit-sigpending = -1
rlimit-msgqueue = -1
rlimit-nice = 31
rlimit-rtprio = 9
rlimit-rttime = 1000000

Here is the stream date from the file:

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Kazam_screencast_00000.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42mp41isomiso2
    creation_time   : 2017-12-20T05:45:26.000000Z
    encoder         : x264
  Duration: 00:00:11.91, start: 0.000000, bitrate: 3402 kb/s
    Stream #0:0(eng): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv444p, 1920x1080 [SAR 1:1 DAR 16:9], 3289 kb/s, 25 fps, 25 tbr, 2500 tbn, 50 tbc (default)
    Metadata:
      creation_time   : 2017-12-20T05:45:26.000000Z
      handler_name    : VideoHandler
    Stream #0:1(eng): Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, mono, s16p, 115 kb/s (default)
    Metadata:
      creation_time   : 2017-12-20T05:45:26.000000Z
      handler_name    : SoundHandler
  • recent updates this week? If no software's changed, maybe some hardware's failing – Xen2050 Dec 21 '17 at 1:07
  • Check your pulseaudio sample rate by running pulseaudio --dump-conf. Check your avi files sample rate by running ffmpeg -i /path/to/file. Then check if there is a different rate set in kazam. edit your question to include the results from the above commands. – J. Starnes Dec 21 '17 at 1:49
  • Thanks J. Starnes. I will edit the information in when I get home. – Phanto Dec 21 '17 at 2:42
  • I'm not seeing any issue in the output of the commands. I have installed kazam. vlc had no issue playing back the screen casts that I made. What are you using to play the files back? – J. Starnes Dec 21 '17 at 5:51
  • I am using VLC. I have always used VLC, and the files that recorded fine a few days ago still play fine in VLC. The issue has me completely stumped. I hate to wipe away my OS and reinstall, but at this point I don't know what else to do. – Phanto Dec 21 '17 at 5:54

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