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Hello.
I have DivX files:
video: 360x288pixels 25fps 800kb/s
audio: MP3 24000Hz stereo 56kb/s (28kb/ch)
They have been captured on a DV/MiniDV/whatever camera,
converted to DivX files, placed on the Web, and I've downloaded them.
By opening them in After Effects and zooming in,
I can see that there are 4 black pixels on each of the sides.
Not entirely black (0,0,0), the DivX encoding process have made them like (0,12,0).
So I guess it was a 704x576 originally, then 352x288.
But, they padded 4 pixels of black on each side, then saved as 360x288.
Why?
I would like to make CD-R's with these movies.
I think VCD's. Or maybe MiniDVD's if the VCD 1150kb/s is too bad quality.
What about those 4 +4 black pixels?
I think if I could just crop them away, then I would have 352x288.
And then I could say that this was to be PAL non-square pixels,
encode as MPEG-1 at 1150kb/s, and then use VCDEasy to make
a VCD 2.0 compliant image.
So - how do I crop them away most easily?
I was thinking of using AfterEffects.
But I found that I had no way of outputting to *.mpg.
So - to preserve quality, I'd have to output as a image sequence,
of *.BMP, *.TGA or another lossless image format.
Then use a real MPEG encoder such as TMPEGEnc Plus to get the final *.MPG.
And - if I instead will do a MiniDVD (or a DVD-R, when I get a burner)..
..what about the black 4 +4 pixels then?
Should I
a) just leave them there, giving 2x(360x288) = 720x576
b) crop them - as above, giving 2x(352x288) = 704x576
And - why oh why - did the creator add those pixels??
Was they made there from the capture already?
If so, he should have cropped them immediatly -
so they didn't use the precious bandwidth of the DivX stream, yes?
With regards,
clokkevi.
I have DivX files:
video: 360x288pixels 25fps 800kb/s
audio: MP3 24000Hz stereo 56kb/s (28kb/ch)
They have been captured on a DV/MiniDV/whatever camera,
converted to DivX files, placed on the Web, and I've downloaded them.
By opening them in After Effects and zooming in,
I can see that there are 4 black pixels on each of the sides.
Not entirely black (0,0,0), the DivX encoding process have made them like (0,12,0).
So I guess it was a 704x576 originally, then 352x288.
But, they padded 4 pixels of black on each side, then saved as 360x288.
Why?
I would like to make CD-R's with these movies.
I think VCD's. Or maybe MiniDVD's if the VCD 1150kb/s is too bad quality.
What about those 4 +4 black pixels?
I think if I could just crop them away, then I would have 352x288.
And then I could say that this was to be PAL non-square pixels,
encode as MPEG-1 at 1150kb/s, and then use VCDEasy to make
a VCD 2.0 compliant image.
So - how do I crop them away most easily?
I was thinking of using AfterEffects.
But I found that I had no way of outputting to *.mpg.
So - to preserve quality, I'd have to output as a image sequence,
of *.BMP, *.TGA or another lossless image format.
Then use a real MPEG encoder such as TMPEGEnc Plus to get the final *.MPG.
And - if I instead will do a MiniDVD (or a DVD-R, when I get a burner)..
..what about the black 4 +4 pixels then?
Should I
a) just leave them there, giving 2x(360x288) = 720x576
b) crop them - as above, giving 2x(352x288) = 704x576
And - why oh why - did the creator add those pixels??
Was they made there from the capture already?
If so, he should have cropped them immediatly -
so they didn't use the precious bandwidth of the DivX stream, yes?
With regards,
clokkevi.
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