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Please tell me the conditions for images and videos that can be registered on covers and steps

2021-04-06 06:31:37 UTC 2026-09-03 01:52:47 UTC

Please refer to the following article for conditions related to Teachme AI and the Studio feature.

▼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

Limits / Maximums

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.

Videos

Restrictions, Limits

Common to All Apps

Basic Information 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 Please refer to the following for details.
▼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 a video 20 minutes
When trimming a video (source) Up to 2 GB
When trimming a video (output) 20 minutes
Supported file extensions *2, 3 Registration mp4, mov, m4v, qt, avi
Video trimming mp4, mov, m4v, qt

Mobile App

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

Notes

※1 Videos that have been archived or registered to the clipboard are also counted.
The limit can be expanded in increments of 1,000 videos by adding the paid option "Movie Limit Increase".
Related: The video registration limit has been reached. What should I do?
https://help.teachme.jp/hc/en-us/articles/4402479700249
If you have subscribed to the Teachme AI options "Creation Pro", "Utilization Pro", or "Premium", unlimited uploads are available.
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 On all devices, videos with the "AV1" codec cannot be registered.

  • Even if the requirements are met, there may be cases where uploading is not possible depending on how the video was created or edited.
    If you plan to prepare a large number of images, videos, etc., or expensive ones, please prepare a sample video in advance and verify that it can be registered and edited as intended.
  • Depending on the length and file size of the video, as well as your environment, you may need to wait a long time for processing of lengthy videos.
    If processing does not complete after an extended period, consider canceling the process, shortening the original video, and then re-registering it.

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

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


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