Change resolution without re-encoding?

[ArcticFox]

ive been playing with encoding, but i mistakenly set tmpeg to 16:9 instead of 4:3, now my mpeg1 file is uber widescreen, is there any way of changing the resolution by editing the header? are there any programs that do this?

[Asmodeus]

search for ReStream by shh. It can open MPEG1/2 elementary video streams, and edit their preferences such as aspect ratio (but also much more).

[ArcticFox]

cheers mate

[ArcticFox]

when i do this i get a flashing green bar at the bottom of the window, im presuming it cant change the physical resolution so its created empty space.

any way of fixing this without re-encode?

[Asmodeus]

If you have encoded file with wide:hight = 16:9 you can't change it without reencode. But changing aspect ratio to 4:3 you can force player (software or hardware) to play this with 4:3 aspect ratio.
What you exactly changing in ReStream aspect ratio or you typing new resolution ?

[ArcticFox]

i just change the aspec ratio to 4:3 then click write, everything else standard