HandBrake

HandBrake is an open source and cross-platform video transcoder with many cool features:

• Built-in Device Presets
• Support various input and output formats
• Title / chapter and range selection
• Batch Scan and Queueing of encodes
• Chapter Markers
• Subtitles (VobSub, Closed Captions CEA-608, SSA, SRT)
• ...