What it does
The gdal_translate utility can be used to convert raster data between different formats, potentially performing some operations like subsettings, resampling, and rescaling pixels in the process.
How to use it
Select from history a raster file/subdataset.
Specifiy output format using short name (http://www.gdal.org/formats_list.html).
Advanced options and sources
To see complete details and help section please check the official gdal sources.
Raster Processing Tutorial : https://trac.osgeo.org/gdal/wiki/UserDocs/RasterProcTutorial