What is a Codec?
A codec is software or hardware that compresses (encodes) and decompresses (decodes) video and audio data.
The main role of a codec is to reduce data size while maintaining the original quality as much as possible.
This enables efficient file storage and transfer.
Supported Codecs in Teachme Biz
Videos with unsupported codecs cannot be uploaded even if they have .mov or .mp4 extensions.
| Codec | PC | Mobile |
| H.263 | △* | △* |
| H.264 (AVC) | ◯ | ◯ |
| H.265 (HEVC) | ◯ | ◯ |
| AV1 | ◯ | ✕ |
* Although supported by the recommended operating systems and browsers for Teachme Biz, functionality has not been verified. If you encounter any errors, please convert the video to a supported codec before use.
HDR Support in Teachme Biz
While HDR videos can be uploaded on both PC and mobile devices, please note the following:
- HDR videos will be converted to non-HDR format within the system and cannot be played as HDR content.
- To upload or trim HDR videos on mobile devices, you need the following or later versions of the mobile app:
- iOS: Version 3.9.3 or later
- Android: Version 4.6.8 or later
Related Links
- What kind of limitations are there for images and video?
https://help.teachme.jp/hc/en-us/articles/900006441863 - What should I do if "This video cannot be uploaded to Teachme Biz." was displayed when I tried to upload a video? (Web Browser)
https://help.teachme.jp/hc/en-us/articles/4411962522649 - What should I do if the "Failed to upload video" error was displayed?
https://help.teachme.jp/hc/en-us/articles/4405130646809