Some presets of FFmpeg args are provided by default to make the configuration easier. All presets can be seen in [this file](https://github.com/blakeblackshear/frigate/blob/master/frigate/ffmpeg_presets.py).
It is highly recommended to use hwaccel presets in the config. These presets not only replace the longer args, but they also give Frigate hints of what hardware is available and allows Frigate to make other optimizations using the GPU such as when encoding the birdseye restream or when scaling a stream that has a size different than the native stream size.
| preset-rkmpp | Rockchip MPP | Use image with \*-rk suffix and privileged mode |
Select the appropriate hwaccel preset for your hardware.
<ConfigTabs>
<TabItemvalue="ui">
1. Navigate to <NavPathpath="Settings > Global configuration > FFmpeg"/> and set **Hardware acceleration arguments** to the appropriate preset for your hardware.
2. To override for a specific camera, navigate to <NavPathpath="Settings > Camera configuration > Streams (FFmpeg)"/> and set **Hardware acceleration arguments** for that camera.
| preset-http-reolink | Reolink HTTP-FLV Stream | Only for reolink http, not when restreaming as rtsp |
| preset-rtmp-generic | RTMP Stream | |
| preset-rtsp-generic | RTSP Stream | This is the default when nothing is specified |
| preset-rtsp-restream | RTSP Stream from restream | Use for rtsp restream as source for frigate |
| preset-rtsp-restream-low-latency | RTSP Stream from restream | Use for rtsp restream as source for frigate to lower latency, may cause issues with some cameras |
| preset-rtsp-udp | RTSP Stream via UDP | Use when camera is UDP only |
| preset-rtsp-blue-iris | Blue Iris RTSP Stream | Use when consuming a stream from Blue Iris |
It is important to be mindful of input args when using restream because you can have a mix of protocols. `http` and `rtmp` presets cannot be used with `rtsp` streams. For example, when using a reolink cam with the rtsp restream as a source for record the preset-http-reolink will cause a crash. In this case presets will need to be set at the stream level. See the example below.
| preset-record-generic-audio-copy | Record WITH original audio | Use this to enable audio in recordings |
| preset-record-generic-audio-aac | Record WITH transcoded aac audio | This is the default when no option is specified. Use it to transcode audio to AAC. If the source is already in AAC format, use preset-record-generic-audio-copy instead to avoid unnecessary re-encoding |
| preset-record-mjpeg | Record an mjpeg stream | Recommend restreaming mjpeg stream instead |
| preset-record-jpeg | Record live jpeg | Recommend restreaming live jpeg instead |
| preset-record-ubiquiti | Record ubiquiti stream with audio | Recordings with ubiquiti non-standard audio |