4. Presets

Presets of QWinFF are written in presets.xml in the program installation directory. The format and structure of presets.xml is compatible with the preset file of WinFF [1]. This means you can copy any WinFF preset to presets.xml and use it in QWinFF. In fact, most QWinFF presets are taken from WinFF with little or no modification.

A preset contains the following fields:

label

a descriptive name of the preset. example: WebM Generic

params

parameters to be passed to ffmpeg. example: -vcodec libvpx -acodec libvorbis -aq 90 -ac 2

extension

extension of the output file. example: webm

category

category of the preset. This field is reserved but currently unused by QWinFF. example: Websites

The preset described above is then written in the preset file like this:

<WebMGeneric>
  <label>WebM Generic</label>
  <params>-vcodec libvpx -acodec libvorbis -aq 90 -ac 2</params>
  <extension>webm</extension>
  <category>Websites</category>
</WebMGeneric>

Note

The preset tag name (WebMGeneric) is chosen arbitrarily. Also, there is no need to make preset tag names unique. For example, it’s OK to name all of them preset.

It is better to include codec information in params (e.g. -vcodec libvpx), because QWinFF checks whether the installed ffmpeg supports the codec. If any one of the -acodec or -vcodec isn’t supported, the preset will be hidden.

[1]	http://winff.org