Sunday Oct 02, 2022

How To Learn VIDEO FORENSICS

1. Image Analysis

Section a. Image Analysis – This section Digital Forensics Experts examines an image and any irregularities that may be visible for example, if the background has changed or been modified. It will also look at colour changes and both enhancement or reduction of contrast and brightness. If this image is a still photo that was taken on film, then it may be possible to see a film grain pattern in the original picture; however if it is a video that has been retouched, it will usually look like digital noise with no recognizable pattern to it.

2. Sound Analysis

Section a. Sound Analysis – When an image has been altered you should check out the accompanying sound to determine if it is real or not. If there is no sound at all or someone claiming it is a certain location when in actual fact it isn’t, then this can also be considered forged. For example, if you have an image of a video taken during 9/11 and there are no planes in the sky then you can safely assume that the image is fake and has been digitally retouched.

3. Time Analysis

Section a. Time Analysis – Like image analysis, video analysis also uses a time stamp. This is the actual time that the video was recorded and uploaded onto the internet by either a camera or by someone else. If you find it suspicious that there is no entry of this time, then this may be a fake.

Section b. Time Analysis – It is important to check out the time stamp in order to determine if your video has been altered at all. This can be done by using special software such as AviExpert or ReelHealer. Both of these applications have a lot of technical jargon that is helpful in identifying the exact type of video.

4. Video Analysis

Section a. Video Analysis – In this section you will be looking at the time stamp and video analysis tools to determine the origins of your video. The video analysis tools can be used to analyze and separate out the source which contains all of the information concerning the time, date and location that the image was taken. This is quite a laborious process as it can take several hours to accomplish, but it can save you lots of time in checking out possible fake videos on the internet.

Section b. Video Analysis – If there are no time stamps or any technology applied to your video, then you can be sure that it was taken digitally because unlike film, digital cameras do not have a moving filmstrip. This means that all of the images are taken at once and then recorded. If your video is being downloaded from the internet and there is no time stamp then this means that it cannot be proven real, particularly if there are no other tools applied to it as well.

5. Forged Video

Section a. Forged Video – This is a term that is used to describe a video that has been altered in some way so that it looks much different to the original. For example, if you have an image of a video taken during 9/11, but there are no planes in the sky then this can be considered fake because the footage is of another city or country and not New York.

Section b. Forged Video – Faking a video can also be done with edits made to sound in various ways as well. By adding in additional sound effects before or after the video has been taken, you can make the person listening to it believe that it is real.

Mike Steward

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