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I should wait for a smarter person but doesn't DVD RB Pro address these issues when it's "encoding" and "re-building" the 'movie' in "normal" DVD format? Very short answer but going by logic and intuition which I have very little of both. ;)

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Sophocles what determines you using a blank DVD-5 SL compared to using a DVD-9 DL to backup a blu-ray movie?

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Originally posted by Sophocles:

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Originally posted by GM:

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i edited my post..... :P

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Greeny thank you for waiting;P


BD RB converts all of the current surround sound audio tracks to AC3 448Kpbs which should be compatible with any BD playback unit, and PC's with quality BD playback software.

The idea of doing backups with BD RB is to create a Blu-Ray disc that can be recorded to standard DVD single and dual layer media, but will playback as a Blu-Ray movie in a Blu-Ray player. The type of disc is not as important as the structure on the disc itself.


Since Loco has stickied this I've borrowed some information from jdobbs on setup

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This is interesting stuff... I'll wait for some time as I'm not entering into the BD arena yet... For 2 reasons... 1)Can't afford a stand alone BD player; 2)Can't afford a BD DVD internal reader either.... lol. :D

....gm

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Originally posted by Sophocles:

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Greeny the wait was over.:D

All that you need to get started is a cheap reader, you know along the lines of the cheap PC parts you recommend. LMAO

If you get one of these and a copy of AnyDVD HD then you will have all that you need.


Note that I was not being mean! Hmm! Mean!! Green!! Greeny!! Meany!! On second thought by that logic it's all your fault.:P

http://www.newegg.com/Product/Product.as...7106273

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Yeh I saw that from another post. ;) It seems like a good drive even tho the reviews are crap. ;) I should resend the statement of NOT affording another drive. lol. I'm trying to get some other stuff right now and that's sucking all me cash away from puters for now. :D

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Originally posted by Sophocles:

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Yeh I saw that from another post. ;) It seems like a good drive even tho the reviews are crap. ;) I should resend the statement of NOT affording another drive. lol. I'm trying to get some other stuff right now and that's sucking all me cash away from puters for now. :D

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Greeny you can always spend your money to get something to shoot stuff with later!:P

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jdobbs is a longstanding member here soph, perhaps if this thread takes off you could put a bug in his ear.

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Originally posted by Sophocles:

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The best gauge for measuring disc size is really the length of a movie which tells you what the total frames are. I've found that movies that fall in the 2 hour range do well on a single layer disc which is always good news since they are about one eighth the cost of a dual layer disc. I've had success with movies backed up to single layer disc that were 2 hours and 10 minutes in length, and not visual artifacts.

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I am not sure I agree with that completely....



What TV do you view these on? I have a Sharp 46" 1080p LCD and I can certainly tell the difference when too much compression is used.

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I always use a dual layer DVD for 1080p BD rips. There has even been the odd occasion where I have used 2 DVD-9's for a 1080p BD rip (for example a 3 hour+ film).

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I am very familiar with the x264 encoder settings and I am confident that I am able to set up the encoder for optimum quality (I have a download link for my MeGUI/x264 profiles on the thread link in my sig). However, with that said, too much compression and you start to lose detail. The picture will still look sharp and much better than regular DVD but I prefer to keep it as close to having as much detail as the original BD as possible... But each to their own. :-)

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Also, after my recent Home Theater overhaul (photo's in my profile) lossy audio is starting to sound well... Lossy. The lossless track just sounds so much cleaner and defined. I can't wait for the price of BD media to come down. The best I have found is $12 AUD ($8.65 US). When they are closer to the $5 mark, I will consider using them then.

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Originally posted by Sophocles:

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52 inch Samsung 1080P. I'm curious, at what bitrate do you re-encode at?

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Originally posted by Sophocles:

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Your familiarity with X.264 is not in question here. You do lose quality but at what point can one truly see the difference? Most true X/H.264 Mpeg4 BD discs use more bit rate than is need to achieve quality 1080P picture quality. I suspect that part of the reason is to prevent copying. If that's so then at what bitrate should one re-encode a BD movie. I find that under 20 mbps is more than adequate for 1080P, in fact I choose a bit lower than that when I re-encode.

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Originally posted by Sophocles:

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Am I saying that there is no loss? Nope! I know there is but if I can run two instances of an original along side a re-encode and I have to stare to see the differences, then why should I spend an extra $1.75 on a dual layer disc? My rule of thumb is 2 hours and down goes to a single layer disc. If the movie is 2 hours or more then I check the original to make certain that it's not an mpeg 2 BD disc.

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Originally posted by Sophocles:

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Audio is definitely an area that I choose to save disc space with, and I do it for a reason. Most people's systems can't reproduce the quality differences between HD Audio and 640 Kpbs.

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Originally posted by Sophocles:

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In fact it is down right hard to find a system today that can, and even if it could the vast majority of people couldn't hear the differnces anywat. They might hear a difference but in a blind test they couldn't tell you which one is better. If a 640 Kpbs audio track is better mixed than an HD track, then the 640 kpbs track is going to sound better. Most people think that the high frequencies determine the quality so the one that sounds brighter is usually the one they pick. So what happens if the 640 Kpbs mix sounds brighter than the HD mix?

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Originally posted by Sophocles:

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I am a trained and one time certificated studio engineer (although out of the studio for a number of years now) and before that a professional musician, and the first thing that one realizes is that there is no such thing as a lossless format. There is loss converting acoustical energy to electrical energy, during the recording/capture process, and then more through time delays, compressors, and digital reverbs' just to start. Then a final mix is made before transferring to CD, and by then we end up with about a 50% loss.

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Originally posted by Sophocles:

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I appreciate your disagreement and respect you view, but for it to be completely true it would have to assume that view is wrong. I wouldn't suggest anything to anyone that I didn't think had merit.

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Originally posted by Ryu77:

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I always use a dual layer DVD for 1080p BD rips. There has even been the odd occasion where I have used 2 DVD-9's for a 1080p BD rip (for example a 3 hour+ film).

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What method are you using to split the film over 2 discs?

My main concern is quality, if I need to change disc half way through a film, then so be it (if I can tell the difference).

It would be good to know how to do it, if I decide that option is what is needed.

Thanks in advance.