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Invelos Forums->DVD Profiler: Contribution Discussion |
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Invelos-Image Compression |
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| Registered: March 13, 2007 | | Posts: 4,596 |
| | Posted: | | | | The compression algorythm used when uploading images for contribution generates very disappointing results, especially in the red department. I was hoping to submit the image on the left as I think it more closely represents the colors of the actual DVD cover but the compression totally changed the quality of the image. Notice the distinct loss of detail, especially in the hair and the mottling on Jennifer's forehead and left cheek. The image size was 500x691 @ 197KB at the time of upload so there should have been no compression by Invelos, right? Any suggestions on how to avoid such a drastic drop in quality/detail?  | | | | My WebGenDVD online Collection |
| | Registered: March 13, 2007 |  Posts: 21,610 |
| | Posted: | | | | Not that I am aware of, 8Ball. This is normal for any compression at all, red suffers the the most.
Skip | | | ASSUME NOTHING!!!!!!
CBE, MBE, MoA and proud of it.
Outta here
Billy Video |
| | Registered: May 19, 2007 | Reputation:  | | Posts: 5,917 |
| | Posted: | | | | Try posting the version you uploaded alongside of the version after uploaded as two separate images. |
| | Registered: March 13, 2007 | | Posts: 1,796 |
| | Posted: | | | | The thing to do I've found is don't resize the image yourself.
In other words, if you scan at 300, 800 or what ever send like and let Invelos compress it.
That way your scan is only compressed once.
It still isn't perfect, just better.
I tested by sending the same image scan on digipak TV series were the slip case is used for
parent and child profiles. I sent from the same scan a full scan on one profile and a reduce
scan (500x700) on one of child profiles and compared the differences when they came back. | | | We don't need stinkin' IMDB's errors, we make our own.
Ineptocracy, You got to love it.
"Nearly all men can stand adversity, but if you want to test a man's character, give him power." - Abraham Lincoln | | | | Last edited: by Srehtims |
| | Registered: March 18, 2007 |  Posts: 103 |
| | Posted: | | | | Quoting 8ballMax: Quote:
The image size was 500x691 @ 197KB There's your problem. The size limit to avoid recompression is 200,000 bytes, which is approximately 195.3KB. Your image at 197KB is therefore over the limit and will have been recompressed. | | | | Last edited: by TheFly |
| | Registered: March 13, 2007 | | Posts: 4,596 |
| | Posted: | | | | Quoting TheFly: Quote:
Quoting 8ballMax:
Quote:
The image size was 500x691 @ 197KB
There's your problem. The size limit to avoid recompression is 200,000 bytes, which is approximately 195.3KB. Your image at 197KB is therefore over the limit and will have been recompressed. Ahhh...I'll try lowering the image quality a tad more and see if it helps. | | | | My WebGenDVD online Collection |
| | Registered: March 13, 2007 | | Posts: 4,596 |
| | Posted: | | | | Quoting TheFly: Quote:
Quoting 8ballMax:
Quote:
The image size was 500x691 @ 197KB
There's your problem. The size limit to avoid recompression is 200,000 bytes, which is approximately 195.3KB. Your image at 197KB is therefore over the limit and will have been recompressed. You were absolutely right. I was over the limit. I reduced the image quality...closest I could get without going over was 189KB. After upload, the reds are just as they should be  . Thanks for the tip Fly  . | | | | My WebGenDVD online Collection |
| | Registered: May 19, 2007 | | Reputation: | | Posts: 5,917 |
| | Posted: | | | | It's good to see others trying to put forth the best possible cover. Thumbs up! |
| | Registered: March 13, 2007 | | Posts: 347 |
| | Posted: | | | | Quoting TheFly: Quote:
Quoting 8ballMax:
Quote:
The image size was 500x691 @ 197KB
There's your problem. The size limit to avoid recompression is 200,000 bytes, which is approximately 195.3KB. Your image at 197KB is therefore over the limit and will have been recompressed. What a refreshing answer. So nice to see someone who is willing to help. For this you get a ...  | | | | Antec Nine Hundred case, 4GB A-Data DDR2 800 RAM, Intel Core 2 Duo E6750 Conroe 2.66GHz, ASUS P5K-E/WIFI-AP MB, XFX GeForce 8600GT XXX 256MB 128-bit GDDR3 video card, ZALMAN CNPS9500 AT 2 Ball CPU Cooling Fan/Heatsink, Seagate Barracuda 320GB 7200 RPM SATA 3.0Gb/s HDD, Zerodba 620W PSU, LITE-ON 20X DVD±R DVD with LightScribe SATA, Samsung CDDVDW SH-S203B SATA, Hanns-G HH281 28" monitor, Kodak ESP3250 printer, Klipsch ProMedia 2.1 speakers, Windows 7 Professional |
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Invelos Forums->DVD Profiler: Contribution Discussion |
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