The TZ3 did not have HD (high definition video) and use the Quicktime .mov format for video.
The TZ5 has HD and probably uses a different video format.
I could not determine what it uses from the User Manual.
I suggest you use a different player to play the video.
Take a short HD video and then look at the file name.
It will be something like --> 0001.xxx
See what the file name extender (xxx) is in your camera.
That will tell you what type of video player you need to show the video.
You should be able to find several different players.
Do a Google search for:
Video player for xxx
Instead of entering xxx use the extender your camera shows.
..
I have the DMC-TZ5 digital camera,I had the DMC-TZ3 before and when I shoot video with the TZ5 I get Vertical lines.It seems to do it more outside with the sun but also get these lines indoors sometimes.Has C-NET heard of this problem my tz3 did not do this.Also found on youtube a video showing the same problem (panasonic lumix tz5 bug).I called Panasonic and they said they have not heard of this problem? Thank you

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