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Convert MTS/M2TS with VC-1 to MP4 with 5.1 Surround Sound on Mac Snow Leopard

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Do you sometimes get .mts or .m2ts files with 5.1 channel and want to make the files compatible with Apple devices or Mac applications? AVCHD camcorders with 5.1-ch surround sound system will save the recorded videos in Dolby Digital 5.1. Camcorders like Sony HDR-CX550, HDR-XR520, Panasonic HDC-TM700/HS700/SD700 and the newly released Panasonic TM900/HS900/SD900 make it easy to keep the realistic sound space.


To convert AVCHD footage with 5.1 audio to mp4, keeping the surround sound, Aunsoft Video Converter for Mac is the perfect choice for you to do the trick. If you get M2TS files with 5.1 audio from the decrypted Blu-ray movie, which includes DTS 5.1 as audio, you may also import the decrypted .m2ts files to Aunsoft Video Converter for Mac and convert .m2ts with VC-1 and DTS to .mp4 with 5.1 sound.


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Below is the quick guide for you to convert AVCHD files to mp4 with 5.1 audio on Mac Snow Leopard.


Step 1. Import AVCHD footage to Aunsoft Video Converter for Mac.

For AVCHD files from camcorder, just connect your cam to iMac/MacBook Pro with USB cable, and the camcorder will be recognized as CAM_MEM. Run Aunsoft Video Converter for Mac as the 2011 best Mac AVCHD MTS/M2TS to MP4 converter to transcode and keep 5.1-ch. Click the "Add" button to import .mts files from the HD camcorder or decrypted .m2ts from AVCHD > BDMV > STREAM folder.


Step 2. Choose MP4 with 5.1 surround sound.

Click the "Format" option, and choose HD Video > H.264 HD Video(*.mp4) as output format. The Mac AVCHD to MP4 converter will keep 1920x1080 frame size and 5.1 audio by default.


avchd mts m2ts mp4 51 audio


For some Apple devices like iPod Touch and iPhone which do not support 5.1-channel audio, it is recommended that you choose the iPhone output format from the format list.


Step 3. Deinterlace AVCHD videos.

Select a clip on the file list, and click the "Editor" button. Then go to the Effect tab and make sure the checkbox for deinterlacing is ticked, you will get perfect videos from 1080i to 1080p with smooth images.


Step 4. Convert AVCHD files to MP4 with 5.1 audio on Mac.

Click the convert button on the bottom-right corner and the conversion starts immediately. You can keep 5.1 surround sound from MTS/M2TS files to MP4 conversion.


Soon after the conversion, you can enjoy 5.1-ch audio on Mac, and even burn the files to DVD as you like.



1. If you have BD movies but did not get a full disk copy or decrypt the blu ray disk, you can try Aunsoft iMedia Converter for Mac to rip the copy-protected movie and convert m2ts to mp4 with 5.1.


2. For editing in Final Cut Pro, Final Cut Express, or iMovie, you may choose ProRes 422 or Apple Intermediate Codec (AIC) with .mov as file extension for output format.

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