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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. 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 ### 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. 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.