Are all your m4a files encoded the same way? For example are there some of them encoded with Apple Lossless while others in AAC?
Yes. All of the m4a files are AAC. None are Apple Lossless (as long as Monkey keeps compressing!
You would lose DirectShow playback if MC encounters difficulty building a DirectShow graph on a file (sometimes when it takes too long for the graph to build, MC would quit trying for the file type - until you restart MC).
This is what feels like is happening. It's quite strange. As I import files using Haali/ffdshow, I can see the tray icons for those filters blinking as each file is added to the library. It makes the import process quite slow. Using MP4Splitter/ffdshow, I don't see this tray icon blinking--and the import is much faster.
Have you tried MP4 Splitter filter in stead of Haali Media Splitter? I found the former is simpler and more reliable than the latter.
I have found version 20051125 of MP4Splitter and am auditioning it as I type. It seems to be working fine, but I have not stressed it too much with switching file types. Testing will continue.
I have noticed that visualizations are slightly jerkier when playing AAC files through DirectShow than playing other filetypes.
MC can not write AAC tags, but it reads AAC tags. It should not matter whether DirectShow or Quicktime is used.
This is the most annoying & baffling problem I am currently experiencing. I'd be ecstatic if MC would read all of my tags. In a library of over 12,000 AAC/M4P tracks, nearly 2/3s of them are losing their "Genre" tag. Many have lost their names, track numbers, album tags, etc.
There doesn't seem to be any rhyme or reason as to which files have lost information. All of the tag info appears when I import the tracks into iTunes. Some of the tracks are downloaded from the iTunes Music Store. The remainder have been encoded using various versions of the iTunes encoder (from 4.7->6.0.4) and QuickTime, but the problem tracks span all of those versions.
Most have been encoded under Windows2000. Some have been encoded on a Macintosh. Again, no patterns here.
Are there tagging utilities that I can use to see what kind of tags have been applied to these tracks? What about 'optimizing' tags. Again, aside from MC, I'm not too familiar with the Windows software world....
Thanks,
Brad