text/microsoft-resx
2.0
System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
17, 17
Constant Rate Factor (CRF): The range of the quantizer scale is 0-51: where 0 is lossless, 23 is default, and 51 is worst possible.
A lower value is a higher quality and a subjectively sane range is 18-28.
Consider 18 to be visually lossless or nearly so: it should look the same or nearly the same as the input but it isn't technically lossless.
The range is exponential, so increasing the CRF value +6 is roughly half the bitrate while -6 is roughly twice the bitrate.
General usage is to choose the highest CRF value that still provides an acceptable quality.
If the output looks good, then try a higher value and if it looks bad then choose a lower value.
The default preset is "Medium".
A preset is a collection of options that will provide a certain encoding speed to compression ratio. A slower preset will provide better compression (compression is quality per filesize).
This means that, for example, if you target a certain file size or constant bit rate, you will achieve better quality with a slower preset.
Similarly, for constant quality encoding, you will simply save bitrate by choosing a slower preset.