Looks like I should have searched a bit longer before posting!
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So I found my answer here:
http://forums.tversity.com/viewtopic.php?f=9&t=28130&p=80989&hilit=750#p80989I also modified the great batch file that
segdell wrote to allow right click -> Send To conversions to make it a little more automatic. My version will rename the video.avi file to a video.avi.old file while processing. If it needs unpacking (to play properly on the DSM 750) it will create a new video.avi file, while leaving the old version as video.avi.old. If the file is already in the proper format, it will rename the file back to video.avi.
I also moved the logging location to the root of C:\ since I don't like random log files in my video folders
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My modified version (and credit goes to
segdell on the TVersity forum for the original):
Create a text file named "MPEG4 Modifier (Folder).bat" in your "%userprofile%\SendTo" folder. Next, copy and paste the below text into the file and save. Now find a folder with your videos, right click -> Send To -> MPEG4 Modifier (Folder). A log file will be created in C:\ called MPEG4Modifier.log.
REM @ECHO OFF
cd %1
echo.
echo Folder Location:
echo %1
setlocal enabledelayedexpansion
set /A Counter=1
echo Start of conversion: %time% %date%.>"c:\MPEG4Modifier.log"
echo.>>"c:\MPEG4Modifier.log"
for %%f in (*.avi) do (
echo !Counter!. File found: %%f>>"c:\MPEG4Modifier.log"
move "%%f" "%%f.old"
MMCL --unpack "%%f.old" "%%f">>"c:\MPEG4Modifier.log"
IF NOT EXIST "%%f" move "%%f.old" "%%f"
set /A Counter+=1
echo.>>"c:\MPEG4Modifier.log"
)
echo End of conversion: %time% %date%.>> "c:\MPEG4Modifier.log"