Video Generation Too Fast

uri · Post by **uri** » Wed Apr 12, 2006 9:10 am

I am trying to evaluate this nice software suite

It seems to be running for a few days on my server, unfortunately, i can't have any video generated at a "real" frame rate.
My camera is configured with a preset profile (PAL / 5 fps max) and the video I get seem to be 5x too fast.
Are there any way to force a real frame rate generation ?
I looked at the ffmpeg parameters , i didn't change them, the ZM_FFMPEG_OUTPUT_OPTIONS has a -r 25 value.
Any help would be appreciated

jameswilson · Post by **jameswilson** » Wed Apr 12, 2006 10:20 am

Im not sure as i dont use ffmpeg on the web side but you passan input framerate to ffmpeg on thi input side so it might be worth adding -r 5 to in incoming framerate . Leave the out framrate at 25 as that will genertae a 25fps movie. I assume that it just duplicates the images x times to make 25fps from 5 but im no ffmpeg expert

uri · Post by **uri** » Wed Apr 12, 2006 12:40 pm

jameswilson wrote:Im not sure as i dont use ffmpeg on the web side but you passan input framerate to ffmpeg on thi input side so it might be worth adding -r 5 to in incoming framerate . Leave the out framrate at 25 as that will genertae a 25fps movie. I assume that it just duplicates the images x times to make 25fps from 5 but im no ffmpeg expert

If I tail zmvideo.log i can see the cli used
for example
04/12/06 14:35:54.686463 zmvideo[9685].INF [/usr/bin/ffmpeg -y -r 10.87 -i 0000-capture.jpg -s 320x240 -r 25 'Event-279-r1-s1.mpg' > ffmpeg.log]

the -r parameter used by ffmeg is never the same. I don't know how it's defined..

jameswilson · Post by **jameswilson** » Wed Apr 12, 2006 2:55 pm

ah it must be defined in code then i suppose no. of images/ section length. Im sorry then we need someone with more ffmpeg experience. Do all vids created i.e. formats have this issue?

rockerBOO · Post by **rockerBOO** » Thu Apr 13, 2006 3:31 pm

http://ffmpeg.sourceforge.net/ffmpeg-doc.html

You will see that -r is for frame rate which is supplied from the camera probally

But for some reason you have 2 in there.

Post by **zoneminder** » Mon Apr 17, 2006 8:01 pm

You can get odd appearing frame rates if you have limit frame rate on alarms set to off. Otherwise is should basically be calculated from the number of images in the events and the duration of it.