helpme101 0 Posted October 29, 2018 Hi, can i check that if your software/script does it able to help detect video issue for frame drop and frame lag as show below moving gif Video: 10mins camera capturing continuous ssame movement of a pendulum Objective of the video capture is to knew during video recording any frame drop or lag . After finish video record example at 1min 35 sec , visually, we can spot frame drop/loss/skip video was not as smooth Eg Below shown frame loss during pendulum returning back, can i check if your software able to detect this similar issue by showing the timestamp where the frame loss occur? This will help to watching manually to finish the 10mins duration video. eg of video capture start to lag showing after pendulum movement 2nd one to be out of sync during lst movement Share this post Link to post Share on other sites
tomcctv 190 Posted October 29, 2018 Hi, can i check that if your software/script does it able to help detect video issue for frame drop and frame lag as show below moving gif Video: 10mins camera capturing continuous ssame movement of a pendulum Objective of the video capture is to knew during video recording any frame drop or lag . After finish video record example at 1min 35 sec , visually, we can spot frame drop/loss/skip video was not as smooth Eg Below shown frame loss during pendulum returning back, can i check if your software able to detect this similar issue by showing the timestamp where the frame loss occur? This will help to watching manually to finish the 10mins duration video. eg of video capture start to lag showing after pendulum movement 2nd one to be out of sync during lst movement More rubbish Share this post Link to post Share on other sites
helpme101 0 Posted October 30, 2018 As sometime video recorded from surveillance had frame drop and lag. Does anyone had a solution to track if such issue occur without manually watching the footage? Share this post Link to post Share on other sites
tomcctv 190 Posted October 30, 2018 As sometime video recorded from surveillance had frame drop and lag.Does anyone had a solution to track if such issue occur without manually watching the footage? Yes .... watermark or signature. Frame drop like your first image would be noticeable by eye and most of the time it’s down to bad settings or bad HDrive. As far as lag ...... lag is not noticeable to even bother about or for you to design software to detect it. Lag does not loose frames it looses time. But like in your second image .....it might only loose 1000s of a second which is not noticeable Take your second image It looks as if right image has lost sink it could be the left ....your image only shows one is out of sink but which one. .... is the one on the right too slow or left too fast. But if it was two videos none have lost image but one has lost time (sink) but again 1000s of a second which is nothing to bother about .... you can’t blink that fast. And another problem in your lag .... where would you put your lag detection...... footage is burnt off and viewed on a pc which can naturally have lag Share this post Link to post Share on other sites
helpme101 0 Posted October 31, 2018 Thank for the detail explanation. Agreed too that frame loss is more critical, can i know more in depth for the signature or watermark that you had suggest earlier. As sometime video recorded from surveillance had frame drop and lag.Does anyone had a solution to track if such issue occur without manually watching the footage? Yes .... watermark or signature. Frame drop like your first image would be noticeable by eye and most of the time it’s down to bad settings or bad HDrive. As far as lag ...... lag is not noticeable to even bother about or for you to design software to detect it. Lag does not loose frames it looses time. But like in your second image .....it might only loose 1000s of a second which is not noticeable Take your second image It looks as if right image has lost sink it could be the left ....your image only shows one is out of sink but which one. .... is the one on the right too slow or left too fast. But if it was two videos none have lost image but one has lost time (sink) but again 1000s of a second which is nothing to bother about .... you can’t blink that fast. And another problem in your lag .... where would you put your lag detection...... footage is burnt off and viewed on a pc which can naturally have lag Share this post Link to post Share on other sites
helpme101 0 Posted November 1, 2018 hi how about able this sample video https://tinyurl.com/videoframeloss At 2-3 sec showing very quick frame loss. sometime need view a few times . Will it able to detect? Share this post Link to post Share on other sites
tomcctv 190 Posted November 1, 2018 hihow about able this sample video https://tinyurl.com/videoframeloss At 2-3 sec showing very quick frame loss. sometime need view a few times . Will it able to detect? . You can see it go out of sink by eye.... But again was it lag on recording or did the ball stick. How do you think this is going to help the cctv industry ? Loosing millisecond is not worth anything in cctv industry . We’re would your software be run .... on recorder or analysis it after ? Your demo video is only a upside down lollipop going left and right. Cctv would be people tress cars pets all together which is why cctv footage has electronic signature and watermark. Signatures got introduced years ago to verify tampering Of footage ..... all well known manufactures run it on native recording Some cheap China eBay crap don’t ..... this is why you never use cheap junk in commercial or high risk systems Share this post Link to post Share on other sites
