I love Sonar but I do find it's use for video very limiting.  I'm not talking full featured video editing like some have suggested because I think it would just end up being a super buggy product.  I just would like workflows that make sync and ADR work simple and accurate.

Sonar will use whatever codecs you have installed on your system to import video files, so if you want to import MP4, etc., you just need to install a decent codec pack. I use K-Lite codec pack on Windows 8.1 x64, and Sonar can open pretty much anything.
 
http://codecguide.com/download_kl.htm if you want to check it out.

Although K-lite is among the safer codec packs to install  in terms of not containing known malware, it is an awful idea if you do any serious video editing.  Some of the codecs install conflict with existing codecs in several popular video editing/compositing software.  Many have found out the hard way that their render times go up and quality goes down because these codecs were assembled for mostly watching and copying stolen movies with little regard for professional creation of such things.  To make matters worse, some elements are difficult to remove if you discover there is a conflict.  If you mostly watch movies and do very light video editing, I'm sure it will be fine.

Nope, no problems like that here, and I have both Vegas and Premiere. Been using K-Lite for a pretty long time, and the codecs work great in Sonar. Uninstaller works fine as well (first thing I tested).

In fact, a safer solution that gives you more control is to find a reliable form of batch conversion.  Bad codecs are one of those factors that can cause issues that end up making the Host app seem buggy when the problem may lie in trying to place a Dollar store engine in a Ferarri.  Commercial codec licenses tend to cost money.  There are some amazing free codecs but some are plain junk.  With a pack, you get the good with the bad.  All of the codecs in k-lite and most others are open source.  It may take longer and you may need to do some research, but you are better off installing the individual codecs than randomly dumping tons of unknowns on your computer.

StepD, I used k-lite with Vegas years ago and it worked fine.  Unfortunately I have known others that were not so lucky.  I have done many risky things with my computer, but just because it worked for me, does not mean i would recommend someone else take the same risk.
 

Yeah, I just don't consider it that risky at this stage. Like I said, the uninstaller works fine, plus you get tweak tools that let you enable/disable one codec at a time. It's the same codec library used in VLC and other open source players.

dubdisciple
Although K-lite is among the safer codec packs to install  in terms of not containing known malware, it is an awful idea if you do any serious video editing.  Some of the codecs install conflict with existing codecs in several popular video editing/compositing software.  Many have found out the hard way that their render times go up and quality goes down because these codecs were assembled for mostly watching and copying stolen movies with little regard for professional creation of such things.  To make matters worse, some elements are difficult to remove if you discover there is a conflict.  If you mostly watch movies and do very light video editing, I'm sure it will be fine.

Exactly....avoid these types of downloads like the plague. Anyone who uses their DAW for serious work should never go down that road (been there, done that, got the t-shirt), let alone surf the net. There's no way you can use those codecs on a pro level. And regardless of the codecs on your system, Sonar does NOT like certain formats...Quicktime and MPEG's comes to mind

jscomposer
 
There's no way you can use those codecs on a pro level. And regardless of the codecs on your system, Sonar does NOT like certain formats...Quicktime and MPEG's comes to mind

Sonar only has problems with QT in x64 mode. QT files load fine with the codec pack in Sonar x64.

StepDad..I know people who don't consider smoking crack risky.  They use it all the time and thus far they seem to be leading normal, functional lives.  Does not mean i would recommend it.  Like I said, i am glad it works for you but there are known issues with some of those codecs( Lagarith codec provides good compression but is painfully slow).  When you think about it, installing an entire codec pack is a very inefficient way to go about things anyway. If you needed a compressor, I doubt you would install a compressor pack filled with 100 unknown compressors.  You would likely try and weed out the known junk first.  Getting away with something does not make it a good idea.  Avid is notorious for crashing if you use anything but the recommended codecs.  We had a guy at the station i worked for get fired because he ignored the warning from Avid not to update Quicktime  to the latest version because of an unresolved compatibility.  Totally fried the Avid install and caused delays in a big project.  Of course there are plenty of anecdotes both positive and negative, but that just underscores the point that it is a risk.  The vast majority of people who drink and drive arrive home safely, but i certainly don't recommend it.