Worried about quality? What encoding settings for best quality output:
It is simple: use the "Automatic" as the encoding option, read the 2 pass section below to decide when to use 2 pass and the Image filters section for information on them.
With the Automatic option you can trust ConvertXtoDVD to provide best quality for you regardless of the size of the final size output.
If you want to understand why read below:
In the case of ConvertXtoDVD it is a misconception to believe that a DVD that is not filled up or written to the very edge of the disk is bad conversion or that the result is of low or bad quality.
ConvertXtoDVD encodes in a different way than most video converters. ConvertXtoDVD does not try to fill a DVD during each conversion. With the special converting engine of ConvertXtoDVD filling the DVD would not give better quality it would just fill up space. So there is no point filling the DVD if it is just to "fill" the DVD. In the case of ConvertXtoDVD it is perfectly normal that not all your disks are not filled. Encoding method
ConvertXtoDVD uses an encoding method called CQ, contant quantization factor encode. Most users are familiar with constant bitrate (CBR) encodes and traditional variable bitrate (VBR) encodes. With a CQ encode size is not proof of quality. Only your eyes can tell you if the result is respectable or not. In other words ConvertXtoDVD is a quality based encoder which make an economic use of the bitrate with a very simple principle: when it's not needed to use higher bitrate, convertx will not use it.
For more explanations about ConvertXtoDVD encoding method please see: this post
The common mistake is to believe that BIGGER SIZE / BITRATE will produce bigger quality. THIS IS NOT TRUE IN ANY CASE.For the hard headed
I might as well make this easier for you and tell you now, that setting "Short projects" as your encoding option your output size will be bigger than with the other options listed, however---this does not mean your result will be any better at all, in fact it maybe worse. Once again, size is not proof of quality in the case of ConvertXtoDVD a better use of bitrate might have been done by using a different encoding option.Encoding option advisor
The encoding option advisor makes a decision to obtain the best visual quality, and doesn't care to fill up completely the DVD.
The question to ask ourself is "The encoded result is looking good or not"? If it's looking good with the currently used size, why it should take more? As long as you answer NO to the second question, then it's pointless to say that it don't take enough space.
ONCE AGAIN, TO MAKE IT LOUD AND CLEAR, BIGGER SIZE DOESN'T MEAN BETTER QUALITY !!!!
Keep in mind: ConvertXtoDVD cannot invent quality where it does not already exist. You cannot convert a mediocre file and expect to have even better quality after the conversion. It's common sense for instance to think that if the source file used fit in 1 or 2 CD, there is no reason why it should take a full DVD -5 or even DVD-9 when converted, no matter how efficient the input format is.Image filters
If you are worried about quality, first change the image filter used in the settings, under the Video Processing tab. The default setttings is at Linear (VSO) which is a good filter - optimized for speed for a faster conversion but other filters will provide a better quality but can increase the conversion time.
See this post for more information about image filters
, and image filter comparisons
+ and this one
, often suggested is the filter "Lanczos".High Definition Content + ConvertXtoDVD
HD content to DVD, a lot of MKV files (amoung other files) contain HD content and users are surprised about how big the difference in size the result is after conversion with ConvertXtoDVD. You must remember that the simple fact of resizing the image to DVD standard (720 x 480 NTSC, 720 x 576 PAL) can reduce the file size significantly ---> (1920*800)->(720*428) almost dividing by 3 times the size. Also keep in mind the MKV or other file type container often contains content that will not be processed by ConvertXtoDVD, extra audio and subtitle files for example.
Unless you have a blu-ray player, blu-ray player, + BDRE disks, or a media player and a HD TV you will not be able to watch your HD files on TV in their original HD resolution. VSO is working on HD solutions....2 pass
2 pass will not improve quality enough to be worthwhile if you use the Automatic encode option except for projects long enough that the DVD cannot be kept from being filled. So you might get some improvement with 2 pass for those longer than about 170 or 180 minutes on a DVD5 disc. But any improvement is reduced to nearly zero for projects as long as 5 hours.
Consider keeping projects below 240 minutes or putting them on a DVD9 disc instead if you are really concerned about quality.Long projects
Some users want to put a lot of TV series episodes on a DVD5 disc and are not very concerned about quality. You can use Half D1 resolution instead of Full D1 for projects longer than about 5 hours or SIF for those longer than about 7 hours to prevent block pixilation. Play the converted files on your computer before burning them to see if quality is acceptable when experimenting, and consider that conversions to low resolution like Half D1 and SIF will not look good on high definition TVs. You may want to put fewer episodes on a DVD5 at Full D1 resolution for better quality, or use DVD9 if it is important to put as many episodes as possible on one DVD.
if you want a more detailed explanation.