Instead of 1920x720@1:1, 1920x1088@24:9, better?

audiohominis · 8th January 2010, 11:16

Hi guys.
I'm looking to do some very high quality BluRay encoding and I wonder if there would be any visual quality benefit to rendering at 1920x1088, but with a pixel aspect ratio of 24:9, so the end result would be 1920x720, as opposed to rendering natively to 1920x720 (with square pixels). Would "squeezing" the image in such a manner help further reduce compression artifacts, or is it that if the same bitrate spent on 720 vertical pixels would ultimately yield more or less the same quality since less compression would need to be applied to lower vertical resolution.
Please let me know if I confused you to death.

poisondeathray · 8th January 2010, 16:33

If this is for blu-ray those PAR's and resolutions are not legal.

Only 1:1 (or 4:3 for 1440x1080 interlaced) ; if you need other AR's than 16:9 then you need to add borders

audiohominis · 8th January 2010, 20:22

Yeah.
The PS3 only accepted a non-BluRay MP4 encoded that way.
Thanks for the reply.

8th January 2010, 11:16	#1 \| Link
audiohominis Registered User Join Date: Jan 2006 Posts: 129	Instead of 1920x720@1:1, 1920x1088@24:9, better? Hi guys. I'm looking to do some very high quality BluRay encoding and I wonder if there would be any visual quality benefit to rendering at 1920x1088, but with a pixel aspect ratio of 24:9, so the end result would be 1920x720, as opposed to rendering natively to 1920x720 (with square pixels). Would "squeezing" the image in such a manner help further reduce compression artifacts, or is it that if the same bitrate spent on 720 vertical pixels would ultimately yield more or less the same quality since less compression would need to be applied to lower vertical resolution. Please let me know if I confused you to death. __________________ CPU: Intel® Core™i7 930 @ 2.80GFz 2.79 GHz (8 cores) GPU: NVIDIA® GeForce® GTS 250 SYS: Windows 7 Ultimate x64 RAM: 6.00 GB

8th January 2010, 20:22	#3 \| Link
audiohominis Registered User Join Date: Jan 2006 Posts: 129	Figures Yeah. The PS3 only accepted a non-BluRay MP4 encoded that way. Thanks for the reply. __________________ CPU: Intel® Core™i7 930 @ 2.80GFz 2.79 GHz (8 cores) GPU: NVIDIA® GeForce® GTS 250 SYS: Windows 7 Ultimate x64 RAM: 6.00 GB

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

8th January 2010, 16:33	#2 \| Link
poisondeathray Registered User Join Date: Sep 2007 Posts: 5,375	If this is for blu-ray those PAR's and resolutions are not legal. Only 1:1 (or 4:3 for 1440x1080 interlaced) ; if you need other AR's than 16:9 then you need to add borders