hikvision dropping frames on playback

[manikm]

hi guys,

ive got a hikvision NVR and 4 x hivision cameras, 3 bullets and 1 dome.

ive noticed when playing back the dome one, i get occasional frame drop.

tried various settings but nothing seems to fix it.

the cameras are plugged direct into the NVR poe ports.

any ideas what might cause this? i dont recall it happening, when i had 4 x bullets, but i replaced one bullet with a dome, with wider lens.

its a DS-7608NI-E2 NVR (8 port)
firmware: v.3.4.96 - build 170921

cameras are: 3 x DS-2CD2032-I (bullets) and 1 x DS-2CD2342WD-I (dome)

any ideas?

 

[cyberwolf_uk]

Have you tried lowering the FPS to 10 for example and the the iFrames to match. Also dropping the bitrate down to 4096 on the cameras.

 

[manikm]

funnily enough yes, im running 10FPS, and max bitrate is set to 4096 - it didnt help.
where are iFrame settings, camera themselves?

 

[alastairstevenson]

ive noticed when playing back the dome one, i get occasional frame drop.

If you repeat the playback, does it drop in the same location?

Suggestion either way:
Export a segment of the video in question and play it directly on the PC and see how it is.

 

[cyberwolf_uk]

 

[manikm]

thanks yes, same place - and i tried exporting to pc, and it drops then too.

ive changed to CBR as above screen shot, and changed iframe to match fps

thanks all, i'll see how it goes

i read somewhere, that iframe should be double FPS - does that sound right?

 

[manikm]

UPDATE - this seems to have fixed the issue (as above but at 15 FPS and 15 I FRAMES!

THANKS!!! this had been driving me nuts!!!