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Managing Low Frame Rate Video Evidence With Amped Replay

Reading time: 4 minDear friends, welcome to this week’s video pitfalls post! When thinking of “video resolution”, we normally recall possible pixel matrix sizes (640×480, 1920×1080, and so on). This is the spatial resolution. A video however has a temporal dimension as well, with the “tempo” relating to the speed at which the frames are captured and then […]

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Marco Fontani February 16, 2021
Perspective: Size Comparison May Be Tricky

Reading time: 4 minWelcome, dear friends, ready for this week’s video evidence pitfall? Today, we’re dealing with one video issue that often gets overlooked: perspective. It’s something we’re all familiar with, but in video analysis, it can play nasty tricks on you.

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Marco Fontani February 9, 2021
Lens Distortion: Cameras May Change the Shape of Things

Reading time: 5 minDear loyal readers welcome to this week’s video pitfall post! Today we continue our mission of shedding doubts on whether the aspect of things in your video is actually trustworthy. Last week, we showed the “stretching effect” that is often introduced by various aspect ratio issues. Today, we’re dealing with lens/optical distortion.

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Marco Fontani February 2, 2021
Correct Video Aspect Ratio: Prevent Image Distortion in Surveillance Footage

Reading time: 5 minDear friends, welcome to a new video pitfall post! Among the many visual clues, the shape, size, and aspect ratio of objects are quite important. This is especially true when considering the need to correct video aspect ratio in surveillance footage to ensure accuracy and reliability. However, we’ll see that in surveillance videos, clues can […]

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Marco Fontani January 26, 2021
Infrared Images: Don’t Trust the Colors of Most CCTV Footage at Night

Reading time: 5 minDear friends, ready for this week’s Video Evidence Pitfall? Today we’re talking about infrared (IR) images, how they could be misleading, and some potential IR-related issues that may involve even “normal” videos. Keep reading!

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Marco Fontani January 19, 2021
Introducing “Video Evidence Pitfalls: Because You Don’t Know What You Don’t Know”

Reading time: 3 minDear friends, I’m so glad to introduce this new blog series on video evidence pitfalls! Every Tuesday, for several weeks, we’ll walk together to discover some delicate or even dangerous aspects that you may easily encounter when dealing with images and videos during investigations. And of course, we’re not belittling your skills when we write […]

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Marco Fontani January 12, 2021