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| Pancolart |
| Posted: Jul 2 2011, 09:46 AM |
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Member
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As i mentioned before, Jpeg image sequence exports even at top value (100) suffer from reduced color dynamics. Please extend photo export compression options.
Another hope: RAW photo format import. I already batch process image files. If i could import RAWS.... Waw!
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| phaeron |
| Posted: Jul 2 2011, 10:38 PM |
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Virtualdub Developer
Group: Administrator
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Lossless JPEG is an entirely different algorithm than standard JPEG. I'm afraid that this is probably not something I'm going to support, particularly since it's not clear that this would have an advantage over PNG.
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| arklight |
| Posted: Oct 5 2011, 02:05 PM |
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Advanced Member
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PNG output for photographic image sequences/video compared to
more graphicky stuff like titles and more FLAT colour elements in an image
don't look right ..(to my eye!)
subtle gradations in colour,,and skin tones look better in JPEG,
no matter how many times i've tried telling myself that PNG is superior,
to the eye.Reminds me of the JPEG2000 thread...
http://forums.virtualdub.org/index.php?act...56&hl=jpeg+2000
I haven't been won over by PNG,
it's a little harsh on the images
Heri Mkocha |
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| stephanV |
| Posted: Oct 5 2011, 03:58 PM |
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Spam killer ;)
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PNG is lossless. Any differences are in your mind, not in the picture.
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useful links:
VirtualDub, Input plugins and filters, AviSynth, AVI-Mux GUI, AC3ACM by fcchandler, VirtualDub FAQ |
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| Pancolart |
| Posted: Oct 22 2011, 08:35 PM |
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Member
Group: Members
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Member No.: 27396
Joined: 11-April 10
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| QUOTE (phaeron @ Jul 2 2011, 10:38 PM) | | Lossless JPEG is an entirely different algorithm than standard JPEG. I'm afraid that this is probably not something I'm going to support, particularly since it's not clear that this would have an advantage over PNG. |
I do not crave for true lossless jpeg (different algorithm). I just like color dynamics not to be reduced. NO CHROMA SUBSAMPLING. Here's the setting that would mean maximal quality:
Chroma subsampling: YCbCr 1x1 1x1 1x1 compression value 97-100%
This jpeg would be 500Kb compared to over 1000Kb from PNG. You can use jpeg directly in most web galleries or applications whereas you have to reedit PNG and save as jpeg.
Thank you for your time and sorry for opening new thread by mistake. |
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| Pancolart |
| Posted: Nov 4 2011, 09:38 AM |
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Anyone read this? Please help. |
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| Loadus |
| Posted: Nov 29 2011, 06:45 PM |
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| QUOTE (Pancolart @ Oct 22 2011, 02:35 PM) | I do not crave for true lossless jpeg (different algorithm). I just like color dynamics not to be reduced. NO CHROMA SUBSAMPLING. Here's the setting that would mean maximal quality:
Chroma subsampling: YCbCr 1x1 1x1 1x1 compression value 97-100%
This jpeg would be 500Kb compared to over 1000Kb from PNG. You can use jpeg directly in most web galleries or applications whereas you have to reedit PNG and save as jpeg. |
PNG.
If you really want to show uncompressed output from footage then that's the way to go (the footage is most likely already YV12 [4:2:0], unless you imported an image sequence yourself). And you _can_ use the PNG on web galleries and applications (if the application does not support PNG, then it might not be worth using). : D
If you really really really want to, you can always save as PNG sequence and then batch process with imagemagick to JPG 4:4:4 (but that would be really odd and unnecessary).
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deviantART behance |
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| levicki |
| Posted: May 9 2012, 08:16 AM |
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Group: Members
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| QUOTE (Pancolart @ Oct 22 2011, 09:35 PM) | I do not crave for true lossless jpeg (different algorithm). I just like color dynamics not to be reduced. NO CHROMA SUBSAMPLING. Here's the setting that would mean maximal quality:
Chroma subsampling: YCbCr 1x1 1x1 1x1 compression value 97-100%
This jpeg would be 500Kb compared to over 1000Kb from PNG. You can use jpeg directly in most web galleries or applications whereas you have to reedit PNG and save as jpeg.
Thank you for your time and sorry for opening new thread by mistake. |
I understand what you want.
Maybe if Phaeron makes output driver plugins this functionality could then be added by someone else.
@Loadus:
Yes, PNG is superior, but he doesn't need lossless output and thus compressing to PNG, decompressing and compressing to JPG is a waste of time, disk space, and processing power.
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| Pancolart |
| Posted: Jul 24 2012, 11:54 AM |
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Member
Group: Members
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Member No.: 27396
Joined: 11-April 10
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| QUOTE (levicki @ May 9 2012, 08:16 AM) | | QUOTE (Pancolart @ Oct 22 2011, 09:35 PM) | I do not crave for true lossless jpeg (different algorithm). I just like color dynamics not to be reduced. NO CHROMA SUBSAMPLING. Here's the setting that would mean maximal quality:
Chroma subsampling: YCbCr 1x1 1x1 1x1 compression value 97-100%
This jpeg would be 500Kb compared to over 1000Kb from PNG. You can use jpeg directly in most web galleries or applications whereas you have to reedit PNG and save as jpeg.
Thank you for your time and sorry for opening new thread by mistake. |
I understand what you want.
Maybe if Phaeron makes output driver plugins this functionality could then be added by someone else.
@Loadus:
Yes, PNG is superior, but he doesn't need lossless output and thus compressing to PNG, decompressing and compressing to JPG is a waste of time, disk space, and processing power. |
Exactly. Still hoping for it. There is no cool replacement for image batch processing to Virtualdub. |
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