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Add FAQ item for cameras with bad sub streams (#8224)

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Nicolas Mowen 2023-10-18 17:17:53 -06:00 committed by GitHub
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docs/docs/troubleshooting/faqs.md
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@ -23,6 +23,17 @@ Ensure your cameras send h264 encoded video, or [transcode them](/configuration/
You can open `chrome://media-internals/` in another tab and then try to playback, the media internals page will give information about why playback is failing.
### What do I do if my cameras sub stream is not good enough?
Frigate generally [recommends cameras with configurable sub streams](/frigate/hardware.md). However, if your camera does not have a sub stream that a suitable resolution, the main stream can be resized.
To do this efficiently the following setup is required:
1. A GPU or iGPU must be available to do the scaling.
2. [ffmpeg presets for hwaccel](/configuration/hardware_acceleration.md) must be used
3. Set the desired detection resolution for `detect -> width` and `detect -> height`.
When this is done correctly, the GPU will do the decoding and scaling which will result in a small increase in CPU usage but with better results.
### My mjpeg stream or snapshots look green and crazy
This almost always means that the width/height defined for your camera are not correct. Double check the resolution with VLC or another player. Also make sure you don't have the width and height values backwards.