In the video encoder config dialog go to the Basic tab and choose a fixed bitrate mode like 2 pass.

At the bottom of the video encoder config dialog there is a drop-down menu where a profile can be saved.

StaxRip remembers if the file size or bitrate was edited last so if you edit the bitrate last it will encode using a fixed bitrate.

Sources can vary greatly in complexity depending on the nature of the source, there still might be situations where fixed bitrates are useful.

StaxRip loads a default template on startup, templates can be saved with:

Main Menu > File > Save Project As Template

Project options are per Template/Project/Job and settings are global.

Custom plugins can either be loaded manually using LoadPlugin():

http://avisynth.nl/index.php/Plugins

Or they can be loaded automatically using the plugin autoload folder.

This folder can be opened in StaxRip with:

Main Menu > Tools > Folders > Plugins

StaxRip is only available for x64 and therefore only x64 plugins can be used.

The AviSynth script can be edited manually using the code editor (Filters > Edit Code) or the filters menu can be configured using the filter profile editor (Filters > Profiles).

Custom scripts can either be loaded manually using Import():

http://avisynth.nl/index.php/Import

Or they can be loaded automatically using the plugin autoload folder.

This folder can be opened in StaxRip with:

Main Menu > Tools > Folders > Plugins

The AviSynth script can be edited manually using the code editor (Filters > Edit Code) or the filters menu can be configured using the filter profile editor (Filters > Profiles).

The StaxRip log file ends with _staxrip.log and can be found in the temp folder, by default the temp folder is located next to the source file.

If a project is re-opened from the Recent menu, then the log file can be opened from the main menu:

File > Recent Projects

Tools > Log File (F7)

The log file history can be found at:

Tools > Folders > Log Files