HOUDINI  I am the packager of MediaInfo GUI. I would like to inform you that there is a new version of MediaInfo GUI available here:

http://downloads.sourceforge.net/mediainfo/MediaInfo_GUI_0.7.25_Mac_Universal.dmg  
(Version 0.7.20)

HOUDINI  You are right. I will release a minor update fixing this bug.  
(Version 0.8)

HOUDINI  Thank you for this info.   
(Version 0.8)

HOUDINI  "apcs" is the FourCC name for AppleProres 422 (LT)  
(Version 0.7.17.5)

HOUDINI  qt_thing from qt_tools gives me that in the terminal:

+ 785 @0x0001002b imdc:xvid:Peri "Xvid (Perian)"

I think that means Perian handles xvid for decoding.  
(Version 1.0a)

HOUDINI  Thank you for pointing me this mispelling. Will be fixed in the next release.  
(Version 0.5.7)

HOUDINI  Thank you Bill !! The message means that a dynamic library is not loaded. I can solve that.

houdini  
(Version 0.5.6)

HOUDINI  I mean the original VideoSpec mplayer version... Thanks in advance.

houdini  
(Version 0.5.6)

HOUDINI  OK. Could you tell me what you get when you run VideoSpec mplayer version in Terminal ? Thanks.

houdini  
(Version 0.5.6)

HOUDINI  Have you tried to analyze an H264/aac mp4 video file? For BILL B it was a problem related to mplayer. He solved that by changing mplayer file in the bundle. I was unable to reproduce this bug on two different computers (Tiger on a G3 iMac and a intel iMac).

houdini  
(Version 0.5.6)

HOUDINI  You can contact me from my web site: click the Houdini icon at the bottom of the main page.  
(Version 0.5.5)

HOUDINI  OK. I have just tested .mp4 files produced from DV file with Quicktime Pro without problem... Could you send me a sample of your unrecognised file and the encoding profile?  
(Version 0.5.5)

HOUDINI  I am the developer of VideoSpec. It is quite strange you got no result with an h264/aac MPEG-4 file. I have tested several .mp4, .mov containing h264/aac with VideoSpec without problems. May be your file was corrupted.  
(Version 0.5.5)