ZoneMinder Forums

Hello ZoneMinder Community,

I'm facing an issue with an H264 stream in ZoneMinder that functions correctly when accessed via VLC. The stream URL is as follows:

'rtsp://xx.xx.xxx.xx:xxx/axis-media/media.amp?videocodec=h264&resolution=1920x1080

While trying to use this stream, I encounter the following error messages in the ZoneMinder logs:

Error Message 1:
Component: zmc_m2
PID: 539042
Level: ERR
Message: "Failed to prime capture of initial monitor"
File: zmc.cpp
Line: 263

Warning Message:
Component: zmc_m2
PID: 539042
Level: WAR
Message: "No width and height in video stream. Trying again"
File: zm_ffmpeg_camera.cpp
Line: 397

Additional details:

Source Type: Ffmpeg
Changing videocodec=jpeg in the URL resolves the issue, but I need to use H264.

Has anyone experienced a similar issue or have any suggestions on how to troubleshoot this? I am completely new to zoneminder. Any help would be greatly appreciated!

Thank you in advance for your assistance!

you may need to specify probesize= and or analyzeduration= in Source->Options. These correspond to the ffmpeg command line options. Google them. Try different values.

Thanks for your feedback! So far I have been unsuccessful with a number of different values. I will post when I find a solution that works. Is there an easy way to check that Ffmpeg is working correctly with Zoneminder?

I just had two cameras that suddenly showed black screens in the ZM monitor and a message saying unable to stream, but opened fine in VLC.

The two cams always worked before, and are set to Nodect mode with no Analysis. They are high-rez streams that are linked to low-rez streams from the same cam.

Anyway, on the General page, I had to enable Decoding to get them working.

As I said, they always worked before, so maybe an Ubuntu library was updated, and thats causing different behavior?

If not decoding then you cannot view them. So someone set that to off. It didn't do it by itself.