What % of compression is acceptable?

[jaeshin]

I've been using several programs to backup my DVDs. For me, aside their pros and cons of using the program, their quality is almost same (I guess I am not that sensitive) when viewed on regular TV.

The question is what percentage of compression is acceptable when converting dual layer to one DVD-R?

I usually try to go with over 80% of original size and if the movie still does not fit in, I just use two DVD-Rs. What about you?

Thanks.



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[bugster]

The question is what percentage of compression is acceptable when converting dual layer to one DVD-R?

Quality is such a highly subjective issue, and the results of DVD transcoding vary according to the tool used and the type of material, that there is no correct answer to this question. If you are happy with the results thats all that really matters.

[MackemX]

can I get in before the disagreements start?

basically you will get anything from 50% to 99.99% here so this is a pointless question really

it's best you do a few tests on a DVD-RW and try it for yourself as there a a few factors that will determine what's good for you such as perception of quality, original bitrate, quality of transfer, viewing equipment etc

I still have a feeling some will still want to say whatever values they are happy with but they mean nothing to me and most others

:EDIT:, lol no I can't get in quick enough though I bet I started typing first

[888888]

I never use two discs. I do as much as DVD Shrink can handle. I cut out more extras if necessary. Movies at 60% look worse but are definitely acceptable.

[Treebeard]

I dont like it to go below 70% if possible.

[MackemX]

let me save this thread a lot of time and give sugardaddy his info he wants now

reply 5 - 85%
reply 6 - 75%
reply 7 - 99.99%
reply 8 - 65%
reply 9 - 50%
reply 10 - 100%
reply 11 - 70

etc, etc, etc

morale of this post, everyone's opinion of the value will probably be different along with the tools, their opinion of the comparision between the original/backup and could possibly range right up at 99.9% down to 0.01%

p.s. here is a very similar thread that may give you some idea sugardaddy
https://www.videohelp.com/forum/viewtopic.php?t=212885

[Shocker Milwaukee]

Another consideration is the bitrate of the movie. A higher bitrate will often allow for greater compression with a transcoder while maintaining acceptable results. However, what's considered acceptable varies from user to user. In the end, you must make the final determination.

[DVD_Ripper]

I've been using several programs to backup my DVDs. For me, aside their pros and cons of using the program, their quality is almost same (I guess I am not that sensitive) when viewed on regular TV.

The question is what percentage of compression is acceptable when converting dual layer to one DVD-R?

I usually try to go with over 80% of original size and if the movie still does not fit in, I just use two DVD-Rs. What about you?

Thanks.

Or does he really care about the answer or just want people to click on his banner link (I guess referer id 7243041) gets him something.

[Brent212]

While I agree quality is subjective, I do find it interesting to see what other's think an acceptable level of compression is. Yes, yes, we all know the obvious "it depends on the material" and "everyone's eyes are different" responses, but you CAN get some sort of estimation for a general concensus of usable compression with a question like this. I don't see why this bothers some folks, but whatever.

I try to never go below 80% with dvd shrink. If a movie requires more compression, I'll split it to two discs with dvd fab (or is it fab dvd?). I tried dvd rebuilder because I'd heard it produced better results at the same compression as dvd shrink, but I was using one of the free encoders (not cce), and I actually thought it looked worse, at least on the movie I was using. I have read good things about dvd2one, so I might try that next time I have to backup a main movie only (it doesn't seem like a good option for full-disc backups).

[MeDiCo_BrUjO]

When too many compression is needed to shrink a movie in one DVD, first I test it by doing it and burning it in a rewritable. Depending on the result, I keep it, or split the movie in two DVDs.

[DVDDave]

i shrink as much as i can. my eyesight sucks but my ears work great---as long as i get a 5.1 or a DTS audio track, i am happy!!!!!