Frigate issue due to use of ffmpeg v4 on arm64

[jherby2k]

Bear with me as i'm using go2rtc via the latest frigate beta (-4) and i'm struggling to get debug logging to show up...

I'm trying to transcode audio from my camera from a-law to opus and/or aac.

This appears to crash go2rtc with exit code 1:

  streams:
    driveway: ffmpeg:rtsp://192.168.2.206:80/ch0_0.264#video=copy#audio=opus

This doesn't work either but at least lets me use the stream without opus:

  streams:
    driveway:
      - rtsp://192.168.2.206:80/ch0_0.264
      - ffmpeg:driveway#audio=opus

same behavior with AAC. This is on a raspberry Pi 4 tested with and without HW decode acceleration in ffmpeg.

2023-01-17 17:11:23.815818233 17:11:23.815 ERR github.com/AlexxIT/go2rtc/cmd/streams/producer.go:52 > error="exec: exit status 1" url=ffmpeg:driveway#audio=aac#audio=opus

[AlexxIT]

You need to increase log level for exec to trace. And check details there

[jherby2k]

OK got my logs working.

When configured the first way, i see this:

2023-01-17 18:57:56.695387784  18:57:56.694 DBG [exec] run url="exec:ffmpeg -hide_banner -allowed_media_types audio -fflags nobuffer -flags low_delay -timeout 5000000 -user_agent go2rtc/ffmpeg -rtsp_transport tcp -i rtsp://192.168.2.206:80/ch0_0.264 -vn -map 0:a:0? -c:a:0 aac -map 0:a:0? -c:a:1 libopus -ar:a:1 48000 -ac:a:1 2 -user_agent ffmpeg/go2rtc -rtsp_transport tcp -f rtsp rtsp://localhost:8554/b008b7886d713602c3dd78c244faafa5"
2023-01-17 18:57:57.207692182  [rtsp @ 0x557cd271b0] Unable to open RTSP for listening
2023-01-17 18:57:57.207816125  rtsp://192.168.2.206:80/ch0_0.264: Cannot assign requested address
2023-01-17 18:57:57.307795693  18:57:57.306 ERR github.com/AlexxIT/go2rtc/cmd/streams/producer.go:52 > error="exec: exit status 1" url=ffmpeg:rtsp://192.168.2.206:80/ch0_0.264#audio=aac#audio=opus
2023-01-17 18:57:57.307813434  18:57:57.307 DBG [exec] run url="exec:ffmpeg -hide_banner -allowed_media_types audio -fflags nobuffer -flags low_delay -timeout 5000000 -user_agent go2rtc/ffmpeg -rtsp_transport tcp -i rtsp://192.168.2.206:80/ch0_0.264 -vn -map 0:a:0? -c:a:0 aac -map 0:a:0? -c:a:1 libopus -ar:a:1 48000 -ac:a:1 2 -user_agent ffmpeg/go2rtc -rtsp_transport tcp -f rtsp rtsp://localhost:8554/b008b7886d713602c3dd78c244faafa5"
2023-01-17 18:57:57.701333959  [rtsp @ 0x5575d381b0] Unable to open RTSP for listening
2023-01-17 18:57:57.701456606  rtsp://192.168.2.206:80/ch0_0.264: Cannot assign requested address
2023-01-17 18:57:57.716437616  18:57:57.716 ERR github.com/AlexxIT/go2rtc/cmd/streams/producer.go:52 > error="exec: exit status 1" url=ffmpeg:rtsp://192.168.2.206:80/ch0_0.264#audio=aac#audio=opus
2023-01-17 18:57:57.716724150  18:57:57.716 WRN [rtsp] error="source 0 error: exec: exit status 1" stream=driveway

when configured in the latter way, i get something a bit different:

2023-01-17 18:55:01.650929231  18:55:01.650 DBG [exec] run url="exec:ffmpeg -hide_banner -fflags nobuffer -flags low_delay -timeout 5000000 -user_agent go2rtc/ffmpeg -rtsp_transport tcp -i rtsp://localhost:8554/driveway?audio -vn -map 0:a:0? -c:a:0 aac -map 0:a:0? -c:a:1 libopus -ar:a:1 48000 -ac:a:1 2 -user_agent ffmpeg/go2rtc -rtsp_transport tcp -f rtsp rtsp://localhost:8554/b334914056eb823bfaa66de47fbb1272"
2023-01-17 18:55:02.090995958  [rtsp @ 0x55a5a281a0] Unable to open RTSP for listening
2023-01-17 18:55:02.091008699  rtsp://localhost:8554/driveway?audio: Address already in use
2023-01-17 18:55:02.185832196  18:55:02.185 ERR github.com/AlexxIT/go2rtc/cmd/streams/producer.go:52 > error="exec: exit status 1" url=ffmpeg:driveway#audio=aac#audio=opus
2023-01-17 18:56:04.194329251  18:56:04.193 DBG [exec] run url="exec:ffmpeg -hide_banner -fflags nobuffer -flags low_delay -timeout 5000000 -user_agent go2rtc/ffmpeg -rtsp_transport tcp -i rtsp://localhost:8554/driveway?audio -vn -map 0:a:0? -c:a:0 aac -map 0:a:0? -c:a:1 libopus -ar:a:1 48000 -ac:a:1 2 -user_agent ffmpeg/go2rtc -rtsp_transport tcp -f rtsp rtsp://localhost:8554/b334914056eb823bfaa66de47fbb1272"
2023-01-17 18:56:04.585998881  [rtsp @ 0x55acd121a0] Unable to open RTSP for listening
2023-01-17 18:56:04.586119213  rtsp://localhost:8554/driveway?audio: Address already in use
2023-01-17 18:56:04.605556566  18:56:04.605 ERR github.com/AlexxIT/go2rtc/cmd/streams/producer.go:52 > error="exec: exit status 1" url=ffmpeg:driveway#audio=aac#audio=opus

[jherby2k]

Confirmed this is a Frigate issue due to use of ffmpeg v4 on arm64. They will fix in the next beta.

[AlexxIT]

"Unable to open RTSP for listening" maybe because your camera support only UDP protocol. So you need to use network mode host in container with ffmpeg.

Go2rtc support this cameras only via ffmpeg source

[NickM-27]

We know the issue already, due to using ffmpeg4 on arm devices 👍

[danielkucera]

This is the solution:
blakeblackshear/frigate#5137 (comment)

@AlexxIT , would it be possible to implement some version detection for ffmpeg and adjust the parameters accordingly?

[NickM-27]

There's no need to implement version detection imo the user is able to customize the args to match the version of ffmpeg they are using

[danielkucera]

That is true but from the error message it is really not obvious that the problem is wrong ffmpeg command.

[AlexxIT]

@NickM-27 Any reason to use outdated ffmpeg?

[NickM-27]

@AlexxIT because hardware acceleration on the pi doesn't work with newer ffmpeg on many setups, so we use older ffmpeg for the arm build and newer for amd64.

blakeblackshear/frigate#3780

[NickM-27]

To be clear as far as Frigate goes this has been fixed https://github.com/blakeblackshear/frigate/blob/dev/docker/rootfs/usr/local/go2rtc/create_config.py#L73-L82

[AlexxIT]

FFmpeg v4 will not be supported. Minimum v5 version