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(MPG4) Sanyo Xacti (all models)
A compact 720p MPEG4 digital media camera recording to SD Card.


 
 
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Old July 1st, 2007, 05:53 AM   #1
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HD or SD?

Hi All.
If you are shooting a video and you know that it will end up on the web and not on a DVD are u using SD or HD?
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Old July 1st, 2007, 08:08 PM   #2
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Quote:
Originally Posted by Amir Chen View Post
Hi All.
If you are shooting a video and you know that it will end up on the web and not on a DVD are u using SD or HD?

HD SHQ always, downres later.
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Old July 3rd, 2007, 12:31 AM   #3
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what about the frame ratio?
in HD it`s 16:9 and in SD it`s 4:3.
when i shoot in HD and want to upload to the web the frame ratio is still 16:9 even if i downrate the resolution.
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Old July 3rd, 2007, 01:28 PM   #4
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SD can be 16:9 as well. DVD's are no problem, the web is no problem you just choose what size you'd like, IE 640x360.
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Old July 3rd, 2007, 08:33 PM   #5
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Always shoot HD

You always want to shoot in HD on an HD Camera. You can always downconvert later.

You want to shoot in HD so can future-proof it.


Joseph
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Old October 30th, 2007, 07:37 AM   #6
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Changing Aspect Ratio from HD to SD

I find that shooting in HD is better a lot clearer and want to keep doing so especially. I would recommend Xacti's HD to anyone who as enough memory on their SD(HC) card(s) and processor power /RAM in their computer. However,
> what about the frame ratio?
> in HD it`s 16:9 and in SD it`s 4:3.
> when i shoot in HD and want to upload to the web the frame ratio is still 16:9 even if i downrate the resolution.

This is a good question, and the people below do not seem to have responded to it (perhaps because they saw it as being too trivial).

I think that if we shoot in SD and want to keep the same aspect (frame) ratio then we have to use an event pan/crop tool such as available in Sony Vegas to crop the sides off the image.

I think that setting the height and width to 980 by 720, and the X and Y center 640 and 360 respectively in the event pan crop tool seems to make the HD image (kindly provided by Ken English on these forums
http://www.dvinfo.net/conf/showthread.php?t=90946
) fit the SD preview window in the bottom right.

Please see this screen shot.
http://yueigo.epc.yamaguchi-u.ac.jp/temp/cropping.jpg

Please would the experts not despair of us, and tell Amir Chen and I whether this is the right way to do it. I would really like to know the best way.
http://yueigo.epc.yamaguchi-u.ac.jp/temp/cropping.jpg

I see that I can save the crop by naming it and then pressing the little floppy disk mark. I have updated the image above to show folks how to do it.

Ah, I now see that there is a crop present prepared called "4:3 Standard TV aspect ratio" dur. It uses height and width to 960 by 720, and the X and Y center 640 and 360 respectively, but I find that my 980 works better and gets rid of the thin black lines at the end. This is the view when I use the preset provided in Sony Vegas, and with the problem, as I see it, circled in red
http://yueigo.epc.yamaguchi-u.ac.jp/temp/cropping2.jpg

Tim

Last edited by Timothy Takemoto; October 30th, 2007 at 07:48 AM. Reason: because I realised there was already a preset crop in Vegas
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