Also, I've just tried changing the H.264 quality to double the file size of the video. Makes no difference to the quality of the logo (9MB file on the left, 18.5MB file on the right):
So it's nothing to do with the compression algorithms and seems to be purely a resampling issue - I don't actually want to resample in the vertical direction....
Did you not get this error message when changing the image size to 1024 in the export panel?
This shows that its not happy and could well be the source of your problem. However if you leave the image size as 720 x 576 and use
Format = H264
Preset = Pal DV widescreen
the problem does not occur and vlc player displays a widescreen image without the blank lines.
Nope, no error messages... Indeed, VLC player is OK, but unfortunatly most other playback programs do not understand the concept of pixels that are not square. (for example importing into powerpoint) This is why I need to resample in the horizontal dimension to ensure correct playback on all devices.
If level and profile are set high enough you dont get an error message.
As Adobe changed the PAR try 1050x576, works for me.
Thanks, but I have no error messages with any resolution (providing it's an even number of course) :-)