[mythtv-users] transcoded video playback uses the wrong aspec ratio

[Frank Lynch]

I just starting to transcoding my recordings to mpeg4, everything is
workinig well, expcept that when I start playback of a transcoded
video the aspect ratio is set incorrectly. I normally use the "4:3
zoom" aspect ratio (NTSC setup with pvr-350 using ivtv's vx support),
but when I playback a transcoded video it appears to be using the 4:3
aspect ratio.
I can switch back to 4:3zoom via the on-screen menu and everything
looks as it should. Does anyone know why the aspect ratio is different
for transcoded video? Is there any way that I can  configure
myth/mplayer to use the 4:3 zoom ratio for playback of transcoded
recordings?

BTW I not changing the size of the image (I'm using 720x480 before and
after transcoding),
cheers,
--Frank

PS - I'm not finding a lot of documentation on recording profiles,
transcoding and the like, so its very possible that I've missed
something. If someone point could point me at some relevant docs or
howto's I would appreciate it.