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Module 11 - Edited photos and videos (deepfakes)

How to recognise manipulated visual content

Introduction

In the previous module, we focused on recognising manipulation and working with emotions. You already know that text can contain strong claims without evidence. Now we will look at something even more specific. On the internet and in the media, we may encounter information that is untrue or deliberately misleading. In this module, you will learn to recognise edited photos and videos.

What does "manipulated photos/videos" mean?

Sometimes it can be:

  • a photograph edited,
  • a video edited,
  • a voice altered,
  • a face digitally altered.

Today's technology also makes it possible to create a video in which a person says or does something that they never actually said or did. Or something that is impossible in reality. Yet it looks very realistic and credible. Such material is called deepfake.

Why is this a problem?

Because:

  • the video is very convincing,
  • people tend to believe what they see,
  • the emotions it evokes can be strong.

We must remember that not only text, but also images, videos and sound can be fake and manipulative.

How can a video be edited?

For example:

  • cutting out part of a speech (missing context),
  • slowing down or speeding up the recording,
  • adding subtitles that change the meaning,
  • digitally altering a face or voice.

📌 Summary

Just because a photograph or video has been edited does not mean that all videos are false.

Critical thinking means:

  • verifying the source,
  • searching for the original context,
  • not reacting hastily.

Even photographs and videos can be fake. Not everything we see is a complete picture of reality. It is a good idea to check the material before sharing it.

Practical exercises

✍️ Practical exercise 1

A pilot taking a selfie outside an aircraft in flight, with the wing and landscape visible below

"Look at this photo. This is proof that the real reason they stop us from opening the windows on planes is to save fuel. Different air pressure, low temperatures and high speeds are just excuses made up by the airlines!! After all, it's warmer closer to the sun, and with less air up there, the pressure is lower – that's logical!! Share this before they delete it!"

Does the text contain a request to share it quickly?

👀 Show solution

✅ Yes.

Does the message contain specific, true and verifiable evidence?

👀 Show solution

✅ No.

Can the image and text evoke strong emotions?

👀 Show solution

✅ Yes.

✍️ Practical exercise 2

"Watch this video of animals kept by people from shelters. This is clear proof that animals from shelters have an extraordinary ability and intelligence to protect their family. Pets from breeders could never do anything like this! Only get pets from shelters. Share before they delete it!"

DOGS SAVE CHILD'S LIFE

This video is our own compilation created from multiple sources, the original links are no longer active: [https://www.youtube.com/watch?v=jd7_MsbCzig]

What signs suggest that this might be a fake video?

👀 Show solution
  • ✅ there is pressure to share it quickly
  • ❌ It features well-known personalities
  • ✅ It evokes strong emotions
  • ❌ It is colourful
  • ❌ It is filmed in a setting that everyone recognises
  • ✅ there are noticeable visual inconsistencies
  • ✅ unnatural movements, especially of the faces
  • ❌ features people from different parts of the world
  • ✅ distorted details and fluctuating image quality
  • ✅ short shots
  • ✅ poor video quality
  • ✅ general implausibility, unreality
  • ✅ inconsistency with information in credible media
  • ✅ lack of broader context (what happened before and after)

Does the text contain a request for rapid sharing?

👀 Show solution

✅ Yes.

Does the text contain specific, verifiable evidence?

👀 Show solution

✅ No.

Can a video evoke strong emotions?

👀 Show solution

✅ Yes.

Naposledy změněno: středa, 24. června 2026, 16.59