# Invalid video

<figure><img src="/files/z8e5l1glMYdCIGY9cDaF" alt=""><figcaption></figcaption></figure>

### **Explanation**

This error message arises when loading video data. It indicates that the videos files from the selected trial were written using an unsupported video chroma format for codec h264. Supported formats are 8, 10, or 12 bit YUV 4:2:0.

### **Possible Solutions**

Theia3D requires video files to be encoded using certain supported video codecs and color chroma formats. If the videos you are trying to load were created with an unsupported video chroma format, they cannot be loaded by Theia3D. When this error is encountered, the best solution is to re-export or convert the videos to a supported chroma format.


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