Category Archives: video surveillance

Extract audio from video by ffmpeg

just to see if there any audio: ffprobe -i in.mp4 find string as example here: Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 95 kb/s (default) then exctract it ffmpeg -i in.mp4 -vn -acodec copy out.aac … Continue reading

Posted in Administration, Linux/Unix, video surveillance, windows | Leave a comment

Evidence Logs access remotely

Evidence beginning from version 2.1.x started to save its activity in windows event logs. To see these logs remotely you can connect to the PC by management console. Just select action -> connect to computer. User, which you connect under, … Continue reading

Posted in video surveillance, windows | Tagged , , , | Leave a comment

Dvars vhl recover files after power failure

Dvars vhl series has a problem that when power fails, then it most probably will loose materials saying hdd needs to be formatted to continue. If materials are critical then the workaround exists. We need: Same size drive or any … Continue reading

Posted in video surveillance | Tagged , , , | Leave a comment