It depends on the quality of the video when it was riped. The videos when converted back wouldn't be as great as the original disk due to loss of colours if not encoded properly. Remember from video -> DVD you will also not get the same original DVD menus etc.
I don't have the time to use a calculator and calculate the exact number of bytes -- but approximations should be adequate.
The easiest example is what you will find most often -- a DVD ripped down to CD size. We will use a simple SL DVD -- DL DVD would be even worse.
You start out with ~4.37GB of data and you throw out ~3.6GB of audio and video data to get down to ~700MB of data.
The ~3.6GB of audio and video data you threw out is lost forever.
The audio for most DVDs is AC3 DD 5.1 -- but that was down-sampled to 2 channel MP3. You can never get the original sound back -- there are algorithms that will attempt to up-sample the audio to AC3 5.1 -- but it will never equal the original.
Video is even worse -- all those millions of bytes of video data thrown out can never be replaced. All the programs that convert AVI to DVD use various algorithms to attempt to GUESS what the missing video data was -- some work better than others -- but none of them can EXACTLY reconstruct the original DVD.
Whether the reconstructed DVD is good for viewing is a matter of personal preference.
But to answer your original question -- it will never be of equal quality to the original.
If you want original DVD quality you will need a clone.
hey tnt thanks for the post thats what i thought because these 700mb movies never get much better when converting back to dvd format...im only downloading the dvdr now but not many people like them because theres so big of file but well worth it...and i know they compressed to because movies are on dvd9's but i havnt found anywhere to get them online...pm me if you know where to find complete clones..
I use that as well - as far a quality of a 700mb file, it's not bad at all - movies broken into 2 cds are better. the bigger the screen the more flaws you will find. If i watch it on a smaller set its perfectly fine for the cost - on my 50" palsma you see a lot of artifacts and blocky pixels - but thats from the codec compressing the image.
It depends on the quality of the video when it was riped. The videos when converted back wouldn't be as great as the original disk due to loss of colours if not encoded properly. Remember from video -> DVD you will also not get the same original DVD menus etc.
ReplyDeleteI use ConvertXtoDVD to convert back to DVD format.
ReplyDeleteEasy to use and results are usually good.
The answer is YOU DON'T.
ReplyDeleteI don't have the time to use a calculator and calculate the exact number of bytes -- but approximations
should be adequate.
The easiest example is what you will find most often -- a DVD ripped down to CD size.
We will use a simple SL DVD -- DL DVD would be even worse.
You start out with ~4.37GB of data and you throw out ~3.6GB of audio and video data to get
down to ~700MB of data.
The ~3.6GB of audio and video data you threw out is lost forever.
The audio for most DVDs is AC3 DD 5.1 -- but that was down-sampled to 2 channel MP3.
You can never get the original sound back -- there are algorithms that will attempt to up-sample the
audio to AC3 5.1 -- but it will never equal the original.
Video is even worse -- all those millions of bytes of video data thrown out can never be replaced.
All the programs that convert AVI to DVD use various algorithms to attempt to GUESS what the
missing video data was -- some work better than others -- but none of them can EXACTLY reconstruct
the original DVD.
Whether the reconstructed DVD is good for viewing is a matter of personal preference.
But to answer your original question -- it will never be of equal quality to the original.
If you want original DVD quality you will need a clone.
hey tnt thanks for the post thats what i thought because these 700mb movies never get much better when converting back to dvd format...im only downloading the dvdr now but not many people like them because theres so big of file but well worth it...and i know they compressed to because movies are on dvd9's but i havnt found anywhere to get them online...pm me if you know where to find complete clones..
ReplyDeleteI use that as well - as far a quality of a 700mb file, it's not bad at all - movies broken into 2 cds are better. the bigger the screen the more flaws you will find. If i watch it on a smaller set its perfectly fine for the cost - on my 50" palsma you see a lot of artifacts and blocky pixels - but thats from the codec compressing the image.
ReplyDeleteTry convertXtoDVD - see for yourself.