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What are the requirements for images and videos that can be registered on covers and Steps?

2021-04-06 06:31:37 UTC 2026-10-31 15:41:08 UTC

Please refer to the following articles for conditions related to Teachme AI and Studio features.

▼What are the conditions for files that can be uploaded to Teachme AI or Studio?
https://help.teachme.jp/hc/en-us/articles/59862918920217

Images

Limit / Maximum

Image Registration

Total number of images per Group No limit
Total image storage per Group No limit
File size per cover or Step image Up to 20 MB
File size per Icon image Up to 5 MB
File extensions png, jpg, HEIC ※

※ HEIC format images can only be registered via the iOS app.

Video

Restrictions, Limits

Common to All Apps

Profile Total number of videos per Group Up to 1,000 videos ※1
Total video storage per Group No limit
File size per cover or Step video Up to 4 GB
Number of Markings and subtitles per video For details, see the applicable manual.
▼How many Markings and subtitles can be added per video?
https://help.teachme.jp/hc/en-us/articles/54687781960601

Web Browser Version

Duration and file size per cover or Step video Registration only 20 minutes
When editing video 20 minutes
When using Video clip (source) Up to 2 GB
When using Video clip (output) 20 minutes
Supported file extensions ※2, 3 Registration mp4, mov, m4v, qt, avi
Video clip mp4, mov, m4v, qt

Mobile App

Duration per cover or Step video Registration only 10 minutes
When editing video 10 minutes
When using Video clip (source) No limit ※4
When using Video clip (output) 10 minutes
Upload to Media Library / Generate from video with AI Up to 2 GB
Supported file extensions ※2, 3 Registration, Video clip (iOS app) mp4, mov, m4v
Registration, Video clip (Android app) mp4, 3gp
Upload to Media Library / Generate from video with AI mp4, mov, m4v

Notes

※1 Videos archived in Archive or registered in Clipboard are also counted.
You can expand the limit in units of 1,000 videos by adding the paid Option "Movie Limit Increase".
Related: The number of registered videos has reached the limit. What should I do?
https://help.teachme.jp/hc/en-us/articles/4402479700249
If you have subscribed to the Teachme AI Options "Create Pro", "Utilize Pro", or "Premium", you can Upload an unlimited number of videos.
Related: [Overview] Teachme AI
https://help.teachme.jp/hc/en-us/articles/29512820683801

※2 Even if the file extension matches, audio-only files that do not contain visuals (images, videos, or animations) cannot be registered.

※3 Videos with the "AV1" codec cannot be registered on any device.

  • Even if the restrictions are met, there may be cases where Upload is not possible depending on how the video was created or edited.
    If you are preparing a large number of images or videos, or paid content, please prepare a sample video in advance and verify that it can be registered and edited as intended.
  • Depending on the length and size of the video and your usage environment, you may need to wait a long time for processing of lengthy videos.
    If processing does not complete after a prolonged wait, please consider canceling the process once, shortening the original video, and then re-registering it.

※4 When semi-automatically generating from a video already registered on a cover or Step, it can be used regardless of the file extension of the original video.

▼ Supported Devices/OS and Recommended Environment List
https://help.teachme.jp/hc/en-us/articles/14572215297305


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