Quote:
Originally Posted by LeXXuz
I think it's not. MeGUI sets the wrong SAR to x264. The aspect ratio of the output is slightly too small and the picture looks slightly narrowed in width. With DGIndex everything is fine.
|
Your sample is mpeg2, not AVC. The PAR is not explicitely signalled in the stream. So you might have to add --sar 12:11 in the x264 CLI when you re-encode it with x264.
Nevertheless your sample should display undistorted (here it does) when you play it back at forced 4:3, e.g. with VLC.
When I play it back with DGindex the ARD logo looks slightly squeezed (narrowed) as expected for a 12:11 or 128:117 PAR (ITU).
Possibly your playback device assumes a par of 16:15 (generic PAR for PAL 4:3), means it will stretch your picture by 6.7% rather than about 9%. Hence a slight (but almost unnoticeable) distortion may persist.
Just a note: In case you intend to author the clip to blu-ray format at some later stage you would have to add 8 pixels black borders to the right and left each, such that the picture width becomes 720.