Aiseesoft M4V Converter for Mac can convert M4V and other popular video/audio files, including 3GP, 3G2, AVI, DV, DIF, FLV, SWF, F4V, MOD, MJPG, MJPEG, MKV, MPG, MPEG, MPEG-2, VOB, DAT, MP4, M4V, MPV, QT, MOV, RM, RMVB, TOD, TS, TRP, TP, WMV, ASF, HD video and AAC, AIF, AIFF, CUE, FLAC, M4A, MP3, MP2, APE, OGG, AC3, RM, RAM, AU, WAV, WMA audio, to any video(3GP, 3G2, AVI, DivX, FLV, H.264, H.264 AVI, H.264/MPEG-4 AVC, M4V, MOV, MPEG-1, MPEG-2, MPEG-4, WMV, XviD, HD video) and audio(AAC, AC3, AIFF, AMR, AU, FLAC, M4A, MKA, MP2, MP3, OGG, WAV, WMA) format. Moreover, it can support 5.1 surround sound now. Key Functions 1. Convert M4V video perfectly Convert M4V video to all popular video, like MP4, AVI, MOV, and HD MP4, HD AVI, HD MOV, etc. 2. Also convert other popular video formats to MP4, AVI, MOV Aiseesoft M4V Video Converter for Mac owns the solution to convert diverse video formats, like WMV, RM, RMVB, ASF, AVI, 3GP, FLV, even MOD, TOD, HD TS, AVCHD video, etc. 3. Get audio from M4V and other videos, audio to audio conversion Has the ability to extract audio from M4V video, and others to AAC, AC3, AIFF, AMR, AU, FLAC, MP3, etc audio formats, and convert among above audios. 4. Accurate trim video You can get any time-length clip from source file exactly by setting the start and end time or casually drag the slider bar. 5. Crop and merge your video Crop the video play region and remove the black edges easily, and merge all the files you choose into one output file. 6. Provide the watermark ability The watermark function provides to add Text or Image watermark. In this way, you can adjust the brightness and make a contrast. 7. Afford selectable video subtitle and Audio track Aiseesoft M4V Converter for Mac is available to add your prefer subtitle and audio track in your own way. 8. Various watermarks for you to choose This Aiseesoft MKV Converter for Mac affords you a widely choices of watermarks to attach on your video.