# Video Formats Decoding is more complex than encoding, because you do not get to specify what format you are sent. It is recommended that you support as many possible video formats as you wish, although if this is not possible (e.g., non-video resolutions) you can either scale, or simply provide a place-holder image. It is important that you support the three possible video formats (4:2:0, 4:2:2, 4:2:2:4) since these are in common use. If you cannot process the alpha channel, it is recommended that you multiply the image against black. It is also important to understand that it is the NDI sender that determines the video and audio clock rates. A simple framebuffer is not sufficient to smoothly display audio and video without glitches. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.ndi.video/all/developing-with-ndi/advanced-sdk/ndi-sdk-review/video-formats.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.