22-05-2017, 01:45 PM
Your DVD player is not at fault.
The 720 active pixels in the digital standard is designed to encompass the entire analogue picture plus a little more so that minor displacement and blanking transients can be accommodated. Analogue PAL occupies 702 pixels as measured between the middles of blanking rise and fall times. From memory this is centred in the 720 pixel digital active line but I'd need to look it up.
For a 625>405 converter you can either impose 405 line blanking timings or simply rely on the 625 input being correctly blanked. My own approach is to rigidly impose a 720 pixel active line and let the analogue blanking take care of itself.
The 720 active pixels in the digital standard is designed to encompass the entire analogue picture plus a little more so that minor displacement and blanking transients can be accommodated. Analogue PAL occupies 702 pixels as measured between the middles of blanking rise and fall times. From memory this is centred in the 720 pixel digital active line but I'd need to look it up.
For a 625>405 converter you can either impose 405 line blanking timings or simply rely on the 625 input being correctly blanked. My own approach is to rigidly impose a 720 pixel active line and let the analogue blanking take care of itself.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
