Vidding Photosensitivity Relay (VPR)

Vidding is the name for the hobby of editing fan-videos, which includes AMVs (anime music videos). Photosensitive individuals are often overlooked when creating and sharing content, making it hard for them to find videos that are safe to view. The VPR system seeks to change this by offering information on how to relay content advisories for common photosensitive risks.
If you'd like to read more about what can cause seizures to further help rate your video, please see WCAG (Web content accessibility guidelines) and/or Prodicle's Photosensitivity Prevention Best Practice Guideline - Production (link contains high risk GIFs).

Originally made for our BentoVid Discord server, this relay system has been designed to accommodate photosensitive individuals without Epilepsy so may not be suitable for those with different sensitivities.
However, we are happy to modify our information to make it more inclusive for wider adoption. Please join us in Discord ( to suggest changes for the VPR.


TL;DR: It's like a CW, but for photosensitivities
Table of Contents
  1. Common Photosensitive Risks
    1. B&C
    2. Motion
    3. Peripheral
    4. Red
  2. How to Apply VPR
    1. Indicating Intensity/Frequency
    2. Best Practices
    3. Public/Live Viewings
    4. No Risk Videos
  3. Frequently Asked Questions

Note: All links in this box lead to high risk videos or GIFs.

Remember: Your source can have these naturally! Your video can be a risk without adding any effects!

"Brightness & Contrast" is about light intensity and color mixture moreso than any particular effect or element. Read more on Xbox Accessibility Guidelines.
  • "Flashing"
    • This includes:
    • Transitioning from one scene to another rapidly (quick fades or quick cuts)
    • Rapid dips to any color (most commonly white or black flashes)
    • Quick changes in brightness, curves, hue, saturation, or levels
  • "Flickering"
    • A flicker is a "flash" that is always present and may never reach 100% opacity
  • Strobing
  • High contrast scenes/colors
    • Pure, solid colors with little to no shading (e.g. a silhouette)
    • A solid color is 25% or more of the frame
    • Two (2) or more colors of light are touching (red, green, blue and CMYK)
    • Both pure black and pure white are present
  • Glitching (especially with red and blue)
  • Quick cuts
  • Quick zooms, such as cutting from 100% to 150% to 300% quickly in succession
  • Light leaks
  • Repetitive use of fades or dips to color, even when slow
Motion effects or transitions that mimic fast camera movement can be risk factors. Such effects and transitions added in the editing process are easily identifiable, but many problematic scenes can be natural to a source.
  • "Motion"
  • "Motion transitions"
    • This includes:
    • Motion effects or transitions that mimic fast camera movement
    • Rapid zooms
    • Lens distortion
    • Motion blurs
  • Several individual elements that all move independently in the same scene
  • Wave/warp/turbulence effects
  • Kaleidoscopic imagery, such as mandalas
  • Quick cuts
  • Ripples
  • Busy, textured, or colorful backgrounds
  • Fast-moving geometric shapes
Any effects or motion that happen in the peripherary or along the edges of frames/video can be risk factors.
  • Vignettes
  • Borders
  • Glitches
Any appearance where the color red is emphasized can be a risk factor and should be explicitly mentioned.
  • Red Emphasis
  • Fast moving red instances
  • Words on a red background
  • All grayscale except for the color red
  • A find edges effect using the color red
  • A red stroke
  • Flames with a red highlight
HOW TO APPLY VPR The relay should be visible before the video begins to play. Always put the VPR in the title, filename, and/or hyperlink text to the video. If putting the VPR inside these is not possible, place them directly next to those elements. When possible, identify what the risk factors of the video are. In the case of Youtube, this is most easily done by placing it in the video’s description area. If a text VPR is impossible, or an additional VPR notice is desired, place the VPR inside the video itself as a title card or overlay before any risk factors play. The VPR should be on the screen for at least 2 full seconds and clearly legible.
"Average" amounts of risk factors or factors that are evenly distributed throughout the video do not use an extra indicator. Very few amounts of risk factors may be qualified with "minimal" or "minor" e.g. VPR: Minimal Flashing or VPR: Minor All If you feel the video is nearly guaranteed to cause problems, and/or has a more than usual presence of risk factors, you may qualify this with "heavy" or "intense." e.g. VPR: Heavy Strobes or VPR: Intense All
All VPR information should be able to be seen before a video begins to play.
  1. Place shorthand in the title
    • My Amazing Title [VPR: B&C]
    • My Great Title [VPR: Minor Motion]
    • The Best Title [VPR: Red, Peripheral]
  2. Elaborate in the description
    • VPR: Quick cuts, color flashes, flickering
  3. If space and time allows, include timestamps of risks, especially if they are only in one part of an otherwise lower risk video.
    • VPR: flash-intensive section at 0:48 – 0:50
    • VPR: Red intro credits. Start the video at 0:10 to skip. No known risks for the rest.
  • Award ceremonies, contests, convention viewings, etc., can help accommodate photosensitive individuals in an audience by using the relays on title cards.
  • Photosensitive risks can be displayed alongside other content warnings, or delineated with a header such as VPR or Potential photosensitive risks.
  • When listing all risks isn't possible, using only the group names (Brightness & contrast, motion, peripheral, & red) may be used to relay the general message.
  • It is important that the relays are video-specific. Photosensitive people are well aware of general risks for video watching, and a boilerplate advisory for the entire show does not help these viewers.
There will always be some risk associated with watching videos for photosensitive individuals. If you believe a video does not have any risk factors, you can use [VPR: No Known] in the title. It is important to still use VPR in these cases, to show that photosensitivities were considered. Otherwise, it may come across as a normal (possibly risky) link to a photosensitive individual.

Frequently Asked Questions

Are you asking me to change my editing style to accommodate others? No. Feel free to edit however you want! All we ask is that you label your video.
I don't want to use the VPR. Is there another way I can be considerate of photosensitive viewers?
Use of a standard Content Warning with an explanation of what is in the video will help. Example: CW: flashing, red.
A generic notice like "flash warning," "photosensitivity advisory" etc. is also helpful, but more vague than a CW.
Using "epilepsy warning" is discouraged. It can be seen as reductive and exclusionary. Photosensitive epilepsy is not the only form of epilepsy and many photosensitive individuals are not epileptic.
Is it a bad thing if my video is VPR: All? The VPR is not a statement on the quality of your video. It is simply a label to allow greater access for photosensitive people to decide if they are able to watch your video or not. Think of it like a TW/CW. A video that has a CW or TW doesn't mean it's a bad video.