ThunderSoft DRM Removal is an easy to use drm removal software for Mac. Help you convert drm protected M4V videos from both iTunes purchases and rentals to lossless standard MP4 file. With fast conversion process, you can get drm-free MP4 files within minutes. Download ThunderSoft DRM Removal for Mac
About Hardware Acceleration
If the conversion is very slow, try hardware acceleration.
You can find "Hardware Acceleration" option under menu "Tool".
If enable this option, the conversion speed should be faster, but it may cause audio/video synchronization problem, please check the output file after conversion.