4Videosoft Blu-ray to MKV Ripper is a professional Blu-ray to MKV Converter, which can rip/convert Blu-ray/DVD/video to MKV, AVI, MP4, FLV, WMV, ASF, MOV, MPEG, etc. for portable iPod, iPad, iPad 2, PSP, 3GP, Zune, iPhone and other digital devices. What's more, the advanced NVIDIAÂ® CUDAâ„¢ and AMD APP technology of 4Videosoft Blu-ray to MKV Ripper makes your conversion speed 6X faster. Key functions: 1.Rip Blu-ray/DVD/Video to MKV 4Videosoft Blu-ray to MKV Ripper allows you to convert Blu-ray DVD to MKV and other video formats, like AVI, MOV, MP4, WMV, VOB, etc. It can also be used to extract audios from Blu-ray and DVD discs. Besides, you can convert any mainstream videos to MKV and other video formats with this Blu-ray to MKV Ripper software, including HD videos, and convert video to audio files. 2.Professional Editing Functions 4Videosoft Blu-ray to MKV Ripper can help you to modify the video effect by adjusting video brightness, contrast and saturation. Besides, it allows you to clip video length and adjust video aspect ratio to get the perfect play effect with this Blu-ray to MKV Converter. You can also merge several Blu-ray/DVD/video movie segment together so as to enjoy the continuous video playing. 3.All-around Output Settings 4videosoft Blu-ray to MKV Ripper can help you to choose the audio track, subtitle and output format for your converted video. There are different video and audio settings provided for you to choose the suitable ones for your video. These specific settings can be saved as user-defined settings for your later use. 4.More Powerful function 4Videosoft Blu-ray to MKV Ripper can preview the converted video, which can help you to do the much more excellent optimization for your video. Besides, you also can attach text or picture watermark for your video is another special feature of 4Videosfot Blu-ray to MKV Ripper.