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shorepot15
United Kingdom
10 Posts |
Posted - May 21 2009 : 14:52:54
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I was a bit puzzled at first about 'Pan from Left to Right/Top to Bottom'. I soon found that it meant landscape photos would go left to right and portrait photos would go top to bottom. This is certainly what it shows on Preview. But when I've burnt it to disk, either SVCD or DVD, to widescreen TV format, the result was different - all my landscape shots which were supposed to pan slowly along the horizon from left to right moved top to bottom. The only way I've been able to put it right is alter it to a custom pan - then I get the same correct movement both in the preview and in the final DVD.
Has anybody else found this? Have I done something wrong?
Mike
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xequte
7504 Posts |
Posted - May 22 2009 : 03:46:31
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Hi Mike
That would indicate that the aspect ratio (width/height of the display image vs. w/h of the output frame) has changed.
Are you using the auto-cropping function (Edit>Frame Properties, Remove Borders)?
Nigel
Xequte Software
nigel@xequte.com |
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shorepot15
United Kingdom
10 Posts |
Posted - May 22 2009 : 07:00:50
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Hi Nigel
I've just done a test to try to isolate the problem.
I've used one single photo with a horizontal horizon, 4:3 ratio, 1600x1200 pixels. I just want a horizontal pan L-R along the horizon. I have never used autocropping.
Here goes
Disk1:
Panning: Set to Left to Right/Top to Bottom
Output: Widescreen
Preview in program: OK
DVD played on PC: Wrong - motion is top to bottom.
DVD-player to TV: Wrong - motion is top to bottom.
Disk2:
Panning: Set to Left to Right/Top to Bottom
Output: NOT Widescreen
Preview in program: OK
DVD played on PC: OK
DVD-player to TV: OK
Disk3:
Panning: Set to Left to Right/Top to Bottom. Then click Properties - Change to Custom but leaving the Start and End Positions the same.
Output: Widescreen
Preview in program: OK
DVD played on PC: OK
DVD-player to TV: OK
So it looks like it's the combination of the panning L-R/T-B and the conversion to widescreen and then the burning that shifts the motion from horizontal to vertical. Is that what's supposed to happen? I can fix it by changing to Custom, but I can't understand why the shift to widescreen should alter the direction of the motion.
Am I missing something here?
Very best wishes and thanks for bothering to look after your customers so well
Mike
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xequte
7504 Posts |
Posted - May 23 2009 : 00:32:40
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Hi Mike
Thanks for the detail. What you are seeing is expected behaviour (well expected if you know the programming rules that DVD PixPlay follows, probably not expected by some users  )
As mentioned, it all has to do with the aspect ratio of the image. If an image is portrait relative to the screen size, that is, it has leftover pixels on the top/bottom of the image then it pans from top to bottom. If there are leftover pixels on the left/right then it pans from left to right.
So your image has a ratio of 4:3, in other words, the width is 133% greater than the height.
You output to a DVD in PAL format where the width is 125% greater than the height (this doesn't apply to NTSC format).
So there are extra pixels on the left and right, thus it scrolls Left to Right.
However if you change to widescreen format, the width is now 177% greater than the height, thus there are extra pixels on the top and bottom so the pan occurs in that direction.
Sorry that my explanation contains so much techno-babble  . The real issue is that the description of the transition, "Top to Bottom/Left to Right", doesn't adequately explain what effect will be seen. Unfortunately i can't think of an easier way to explain it 
Nigel
Xequte Software
nigel@xequte.com |
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shorepot15
United Kingdom
10 Posts |
Posted - May 23 2009 : 05:24:07
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Nigel
Thanks for that. You've made it all clear and I only had to read it through three times!
I suppose I have to say that it is a little disconcerting when you know you want a horizontal pan come what may - that horizon in the picture is always going to horizontal - whatever the ratios and formats, to have to choose an option that calls itself 'pan left to right/top to bottom'.
Would it not be possible to have the additional options of 'Pan left to right' and 'Pan top to bottom'? Are there any occasions when 'Pan left to right/top to bottom' is a useful option?
There may well be insurmountable technical reasons why this is not possible (you've probably got a list of 256 movements and your file is full?) - in which case I'll just stick to changing it to Custom every time.
Thanks again for all your help
Mike |
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xequte
7504 Posts |
Posted - May 24 2009 : 00:36:00
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Hi Mike
That transition has a specific purpose and that is to show the entire image at full screen size as a transition. For that reason it automatically chooses the best direction to handle that.
However, that doesn't help if you specifically want it to pan from left to right, so i think what is required is a specific transition, that always does a one directional pan (whether it can show all the image or not).
We'll look into that for a coming update.
Nigel
Xequte Software
nigel@xequte.com |
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shorepot15
United Kingdom
10 Posts |
Posted - May 25 2009 : 01:09:54
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Thanks Nigel
Much appreciated
Mike |
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Weird thing happeniing with panning
