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  1. Help Center | Teachme Biz
  2. Explore Features
  3. Create & Edit Manuals
  4. Image & Video Editing
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    Image & Video Editing

    • Marking (Shapes, Blur, Text) / Subtitles
    • See all sections...
    • What kind of limitations are there for images and video?
    • About video upload limit and what videos are counted
    • What video codecs are supported in Teachme Biz?
    • Can I remove the sound from the video?
    • Are videos and images resized when uploaded?
    • What should I do if the "Failed to upload video" error was displayed?
    • What should I do if "This video cannot be uploaded to Teachme Biz." was displayed when I tried to upload a video? (Web Browser)
    • Image/Video editing terminated the mobile app forcefully. What should I do?
    • Android version cannot edit videos. 'This feature is not available on your device. Please use an Android 9 or later device.'
    • "Trimming cannot be used while the sound setting for this video is on. Please turn off the sound and try again." error occurs and can't operate with the Android app.
    Help Center

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    Studist Corporation

    Sumitomoshojinishikicho Building 9F, Kandanishikicho 1-6, Chiyoda-ku,
    Tokyo 101-0054

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