You have some work to do to figure this out!
There is a spec for the video; I don’t know what Panasonic was using 8 years ago. The internet knows. Try for a manual or old product spec for your TV by model number.
Some things to try:
Standard definition, 720p and 1080i/p
H.264 - you’ll want a plain vanilla version, like that created by the excellent Handbrake - free!
Possibly an MPEG-2 file that conforms to the Standard Def DVD spec, or, to the HD BluRay spec.
But I’d start with internet search. The answer is out there, but may not be found asking questions on forums...
From the upper left corner of the U.S.
Photos, Video & Pano r us.
College and workshop instructor in video and audio.
70D, Sigma 8mm, Tokina f2.8 11-16, Canon EF-S f2.8 17-55, Sigma f2.8 50-150 EX OS, Tamron 150-600VC. Gigapan Epic Pro, Nodal Ninja 5 & R10.