If the HDTV has a direct pixel mapping mode then you can kill another one of these scaling processes (underscan!). Putting it in another way - you don't have to stay bound to PAL-SAR unless you are creating another PAL video DVD.ĭoing upsampling (upscaling!) so as to fit the native resolution of your HDTV (1920 x 1080 pixels) can eliminate a few upscaling/downscaling processes in the video transmission chain. (unless of course you want to deliberately change the 'aspect'). So it is perfecly fine to recode with a resize (change SAR and even upsample SAR), with a PAR of 1:1, whilst maintaining the source DAR One comment though is that digital monitors have square pixels. The penny has definitely dropped (almost to the ground!) and now you are in control. Still suggest you follow the advise given by Chuffy
Other than comparing the end results for like/dislike.ĭoing that is fine but which one end result makes more sense to us is a? Neither of you're two methods follow a logical path that flows on from knowing your video, If not then play with PAR for a proper DAR. If the source video has SAR=DAR then stick with that PAR for any resizing.
Meaning circles will look like egss, and if they started off looking like egss they may become circles. If the manual scaling function on your media player isn't locked to maintain DAR, then the picture aspect will be distorted (or corrected for some distortion!). If one of the two video aspect ratios is incorrectly specified then the picture will also have an incorrect aspect ratio. Plus manual scaling functions on the media player that you invoke during playback (stretch to, zoom in, pan and scan etc). Informing the media player what type of screen is connected. Viewing area on your video screen is determined by your media player from:Īny 2 of these video aspect ratio parameters (and it calculates the other). The Pixel Aspect Ratio (PAR) specifies the geometry of these pixels. SAR is horizontal pixel count : vertical pixel count. I think you are confusing Display Aspect Ratio (DAR) with Stored Aspect Ratio (SAR).
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