[Support]: Changing fps and bit rate in camera then lost audio

[Cold-Lemonade]

Describe the problem you are having

Everything was working fine in Frigate, then I started changing the fps and bit rate in my cameras and now I've completely lost audio from both the go2rtc live stream and the recordings. NOTHING has changed in my config file.

I decreased the fps from 25 to 20 and increased the bit rate to the maximum. I did not disable audio in the camera so I should be getting sound. In fact, when I open a live view of a camera in Frigate, I heard audio for a split second then complete silence.

I have Dahua branded cameras. And I'm using the following in my config file for each camera (as I said it was working fine before I started changing settings in the cameras and I didn't touch the config file):

      output_args:
        record: preset-record-generic-audio-copy

This is happening in both Frigate 0.13.2 and 0.14.1 as I have two separate mini pc's each making a separate connection to the same cameras. This setup hasn't changed. And I can confirm that the issue is happening when I use Firefox as an alternative to Microsoft Edge.

I have tried rebooting the cameras. Still no audio except for a split second when I open a live view in Frigate. Could Frigate be reverting to the default setting and removing the audio for some reason? My CPU percentage is in the mid 40 percent generally.

I've seen a lot of discussion that shm needs to be increased but, again, I wasn't having any issue until I started changing the fps and bit rates inside the cameras.

Version

0.14.1-f4f3cfa

What browser(s) are you using?

Microsoft Edge, ver. 131.0.2903.63 (Official build) (64-bit)

Frigate config file

NA

Relevant Frigate log output

NA

Relevant go2rtc log output

2024-11-24 06:27:14.520460054  [INFO] Preparing new go2rtc config...
2024-11-24 06:27:15.030074409  [INFO] Not injecting WebRTC candidates into go2rtc config as it has been set manually
2024-11-24 06:27:15.071825147  [INFO] Starting go2rtc...
2024-11-24 06:27:15.191204610  06:27:15.191 INF go2rtc platform=linux/amd64 revision=b2399f3 version=1.9.2
2024-11-24 06:27:15.191320611  06:27:15.191 INF config path=/dev/shm/go2rtc.yaml
2024-11-24 06:27:15.191973838  06:27:15.191 INF [api] listen addr=:1984
2024-11-24 06:27:15.192483408  06:27:15.191 INF [rtsp] listen addr=:8554
2024-11-24 06:27:15.192915334  06:27:15.192 INF [webrtc] listen addr=:8555
2024-11-24 06:27:24.523060866  [INFO] Starting go2rtc healthcheck service...

FFprobe output from your camera

ffprobe version n5.1-2-g915ef932a3-20220731 Copyright (c) 2007-2022 the FFmpeg developers
  built with gcc 12.1.0 (crosstool-NG 1.25.0.55_3defb7b)
  configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-ffbuild-linux-gnu- --arch=x86_64 --target-os=linux --enable-gpl --enable-version3 --disable-debug --enable-iconv --enable-libxml2 --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libvorbis --enable-opencl --enable-libpulse --enable-libvmaf --enable-libxcb --enable-xlib --enable-amf --enable-libaom --enable-libaribb24 --enable-avisynth --enable-libdav1d --enable-libdavs2 --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libass --enable-libbluray --enable-libjxl --enable-libmp3lame --enable-libopus --enable-mbedtls --enable-librist --enable-libtheora --enable-libvpx --enable-libwebp --enable-lv2 --enable-libmfx --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-librav1e --enable-librubberband --disable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --enable-libdrm --enable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-ldexeflags=-pie --extra-libs='-ldl -lgomp' --extra-version=20220731
  libavutil      57. 28.100 / 57. 28.100
  libavcodec     59. 37.100 / 59. 37.100
  libavformat    59. 27.100 / 59. 27.100
  libavdevice    59.  7.100 / 59.  7.100
  libavfilter     8. 44.100 /  8. 44.100
  libswscale      6.  7.100 /  6.  7.100
  libswresample   4.  7.100 /  4.  7.100
  libpostproc    56.  6.100 / 56.  6.100
192.168.50.28: No such file or directory

Frigate stats

No response

Install method

Docker Compose

docker-compose file or Docker CLI command

NA

Object Detector

Coral

Network connection

Wired

Camera make and model

Dahua

Screenshots of the Frigate UI's System metrics pages

No response

Any other information that may be helpful

No response

[Cold-Lemonade]

When I look at ffprobe in Frigate 0.13.2, I get the following output which leads me to believe the camera is outputting the audio (also I hear audio very very briefly in Frigate when I open a live view). To me, this indicates an issue with Frigate.

[{"return_code":0,"stderr":"","stdout":{"programs":[],"streams":[{"avg_frame_rate":"5/1","codec_long_name":"H.264/AVC/MPEG-4AVC/MPEG-4part10","height":480,"width":704}]}},{"return_code":0,"stderr":"","stdout":{"programs":[],"streams":[{"avg_frame_rate":"20/1","codec_long_name":"H.264/AVC/MPEG-4AVC/MPEG-4part10","height":1520,"width":2688},{"avg_frame_rate":"0/0","codec_long_name":"AAC(AdvancedAudioCoding)"}]}}]

[Cold-Lemonade]

I rebooted my laptop--this is the computer that runs the web browser I use to view Frigate. And presto the issue is gone. Very weird. I blame Windows 11. But rebooting solved the problem.

[Cold-Lemonade]

In case other run into similar issues. I have been able to replicate the problem. The audio seems to get dropped when I change the audio encoding's bit rate. Then I need to reboot the laptop to be able to hear it.