HDV > SD Downconvert and Black Line at DVinfo.net

Darren Rousar · August 8th, 2006, 06:09 PM

Anyone else notice a 3 to 6 pixel horizontal line running across the top of the frame after in cam downconverting?

The native HDV looks fine but the SD has the line. Easy fix in FCP but I'd rather not have to mess with it.

Mauritius Seeger · August 10th, 2006, 01:27 PM

Quote:

Originally Posted by Darren Rousar

Anyone else notice a 3 to 6 pixel horizontal line running across the top of the frame after in cam downconverting?

The native HDV looks fine but the SD has the line. Easy fix in FCP but I'd rather not have to mess with it.

no i havent, but i noticed the huge black bars on top and bottom of the image. i was hoping the downconvert would produce an anamorphic style horizontally squashed image (in order to convert from 16:9 to 4:3). is there a setting that will change this?

Darren Rousar · August 10th, 2006, 03:58 PM

Quote:

Originally Posted by Mauritius Seeger

i was hoping the downconvert would produce an anamorphic style horizontally squashed image (in order to convert from 16:9 to 4:3). is there a setting that will change this?

Well, there's 'Squeze' (Sony's spelling), 'Letter Box' and 'Edge Crop' in the 'DownConvert' section of the P-Menu when you're in 'Play/Edit' mode. Would one of those do it?

Mauritius Seeger · October 30th, 2006, 05:58 PM

Quote:

Originally Posted by Darren Rousar

Well, there's 'Squeze' (Sony's spelling), 'Letter Box' and 'Edge Crop' in the 'DownConvert' section of the P-Menu when you're in 'Play/Edit' mode. Would one of those do it?

tragically i don't have that setting. or at least i can't find it in the menue. might that be a difference between the a1 and the hc1?

is there a way to enable the feature set of an a1 on an hc1? i.e. like a software hack?

Dan Robinson · October 30th, 2006, 07:07 PM

This happens with my FX1. When capturing using the in-camera HDV->DV downconvert, a horizontal black line (usually one pixel high but sometimes 3 or 4) appears on the top of all frames of the captured footage. The full sized HDV frame is just fine.

Here are a couple of recent examples:

http://wvlightning.com/stuff/hdvline1.tif
http://wvlightning.com/stuff/hdvline.tif

Also, I see a pulsing vertical 'vibration' in the preview window on the computer during downconverted capturing. This doesn't show up in the captured footage playback though, but I suspect it might be related to whatever the source of this problem is.

Mauritius Seeger · January 11th, 2007, 08:14 PM

i know this wasnt the original issue in the thread, but i finally figured out why my HC1 DV output is letterboxed.

when capturing to DV (using the ilink conversion from HD to DV) the 'TV type' (16:9 or 4:3) affects the type of DV output - in addition to the analogue output. if set to 16:9 then the output is widescreen anamorphic otherwise its letterboxed.

so what on the A1 is sensibly named downconvert is called tv type - or something very simmilar - on the HC1

i just never thought 'TV' could affect 'DV' but then it must go through the same path as analogue.

August 8th, 2006, 06:09 PM	#1
Darren Rousar Regular Crew Join Date: May 2006 Location: Excelsior, Minnesota Posts: 59	HDV > SD Downconvert and Black Line Anyone else notice a 3 to 6 pixel horizontal line running across the top of the frame after in cam downconverting? The native HDV looks fine but the SD has the line. Easy fix in FCP but I'd rather not have to mess with it. __________________ HVR-A1U \| 521Pro LANC \| Blue Snowball \| Dual 2Ghz G5 \| 20" & 23" ACD \| MXO \| FCP 5.1.4 \| Shake 4.1 \| AECS3

October 30th, 2006, 07:07 PM	#5
Dan Robinson Regular Crew Join Date: Mar 2004 Location: Charleston, West Virginia Posts: 131	This happens with my FX1. When capturing using the in-camera HDV->DV downconvert, a horizontal black line (usually one pixel high but sometimes 3 or 4) appears on the top of all frames of the captured footage. The full sized HDV frame is just fine. Here are a couple of recent examples: http://wvlightning.com/stuff/hdvline1.tif http://wvlightning.com/stuff/hdvline.tif Also, I see a pulsing vertical 'vibration' in the preview window on the computer during downconverted capturing. This doesn't show up in the captured footage playback though, but I suspect it might be related to whatever the source of this problem is.

January 11th, 2007, 08:14 PM	#6
Mauritius Seeger Regular Crew Join Date: Aug 2006 Location: London United Kingdom Posts: 77	i know this wasnt the original issue in the thread, but i finally figured out why my HC1 DV output is letterboxed. when capturing to DV (using the ilink conversion from HD to DV) the 'TV type' (16:9 or 4:3) affects the type of DV output - in addition to the analogue output. if set to 16:9 then the output is widescreen anamorphic otherwise its letterboxed. so what on the A1 is sensibly named downconvert is called tv type - or something very simmilar - on the HC1 i just never thought 'TV' could affect 'DV' but then it must go through the same path as analogue.