HandBrake is a free open source video converter that allows you to encode video files from DVD or any video format to MPEG-4 or H.265. It contains a wide range of presets, with which you can quickly convert video for further viewing on various mobile devices, such as Apple iPod, iPhone, iPad, AppleTV, Sony PSP, PS3, Microsoft Xbox 360, etc.
Of the additional features, it should be noted that there is a bitrate calculator , preview capabilities during encoding, resizing and scaling pictures, subtitle integrator, etc