Low FPS with H264 Camera Passthrough writer

[andrew-yu]

I'm using Zoneminder 1.32.3 with Ubuntu 18.04. Connected 7 IP-cameras - one Hikvision and 6 cheap chinese cameras. All 720P and 25 FPS.

When they are connected with H264 Camera Passthrough writer, all cameras, except Hikvision, are showing low (5-8) FPS at Zoneminder. Also Recorded video has lost frames: walking person can be teleported for 1-2 meters on next frame.

With X264 writer all cameras are working ok - 20-25 FPS and no lost frames.

I like low CPU load with H264 Camera Passthrough writer, so i'm trying to fix this. Any ideas?

[BaseballSS]

What is the make and model of the cameras that are being problematic? Do they have microphones?

[andrew-yu]

All cams without mic.

- 4 Escam QD800
- 1 Escam QD300
- 1 oem chinese cam that looks like

[andrew-yu]

I increased camera's image buffer size from 20 to 50 and removed Maximum FPS and Alarm Maximum FPS. At first look, all working ok now.