After transferring months-worth of media (jpg, mp4, m4a) to my computer, i just realized that videos nor audio display timestamps in Windows Properties. (-_-;) The only indication of a timestamp is the ‘Created’ Date, but in my experience this has been totally inaccurate at times, so i don’t trust it.
I noticed, however, if i transferred the same file back to my memory card, and looked at it on my camera it shows the correct (original) timestamp.I googled “view mp4 metadata sanyo” and came across ExifTool, which supports both MP4 and M4A. Since i only needed to view metadata, not edit it, i downloaded the executable zip file instead of the full distribution.
To view the file’s metadata, simply drag the file onto the exiftool executable icon, and a command-line window pops-up with the relevant info:
*Upon some reflection, i don’t think there is any embedded info about the created date; exiftool simply displays the same info as the Windows Properties above (which defeats the purpose of finding a metadata viewing tool). I would need to read some more documentation about how exiftool generates this info, and/or test-editing the date and seeing if/how that changes the exiftool date.
Timestamps aside, there’s some interesting—and possibly useful—info here too, such as aperture, ISO, bitrates..
~I also came across this posting in my search, which recommends AudioShell, but exiftool works for me atm, so i have yet to try it. If you have experience using AudioShell, let me know how it works (or doesn’t) for you.
view mp4 metadata sanyo - Google Search http://www.google.com/#hl=en&q=view+mp4+metadata+sanyo
ExifTool by Phil Harvey http://www.sno.phy.queensu.ca/~phil/exiftool/
What MP4 metadata tag editor are you using? - SprintUsers.com http://www.sprintusers.com/forum/showthread.php?t=181324
ID3 tag editor - AudioShell freeware music files tag editor - direct tag editing from Windows Explorer http://www.softpointer.com/AudioShell.htm