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Windows 7: Hi Gurus -- Video question

11 Aug 2014   #1
jimbo45

Linux CENTOS 7 / various Windows OS'es and servers
 
 
Hi Gurus -- Video question

Hi there

On an HD TV I'm mystified as to why say a 2.0GB MKV / MP4 RIP of a blu ray DVD plays at a far better resolution than a Bog standard commercial DVD of the same movie - even if the commercial DVD is say 7 - 8 GB. !!!

The crazy thing also if I use something like DEVEDE to create a physical DVD on a bog standard DVD (4.7 GB media) from the 2.0 GB Blu Ray rip it still looks much better than the commercial (non Blu Ray) DVD.

So why doesn't Hollywood do the same trick and release the Non Blu Ray stuff on cheaper 4.7GB discs using the same "ripping" techniques. Seems a WIN WIN for everybody.

The MP4/MKV rips won't be quite the same quality as the original Blu Ray discs but they are STREETS ahead of the "Bog standard" DVD releases and even creating a DVD from the ripped Blu Ray makes for a far better viewing experience.

With Audio even a small amount of compression can sound not very good -- for example 128 kbs mp3 rip vs .WAV or .FLAC but it doesn't seem to work the same with video.

Any Guru's out there who can explain this to me. !!! (My old DVD library I copied to .iso's I'm now junking in favour of the mkv / mp4 rips if I can get them - and less disk space too !!!).

Cheers
jimbo


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11 Aug 2014   #2
Wishmaster

Windows 7 Home Premium 64bit
 
 

In regards to BluRay _> DVD looking better than the DVD it would seem simple. The bluray is of higher quality and so downscaling will result in a excellent result.
BUT ..... why the original DVD of the same film don't look that good? Maybe our encoding software is better than the studios? LOL.

But in all seriousness, I've often wondered the same thing and think this is why:

Although we may use a high resolution source (such as Bluray) and downscale to DVD, we would likely use an entire blank DVD or DVD filesize (for MKV MP4) for that film.
Good quality Source, plus entire DVD/filesize= excellent result. We may use subs but likely just 1 audio track of our chosen language. So we have alot of room dedicated to video quality.

Where as the studio will not use the full DVD for the film due to other thngs and end up compressing the film alot more.
Things such multiple Audio tracks, Special features etc. But since they are targeting many audiences with 1 disc, these things need to stay. Thus, video quality suffers a bit.

Only reason I can really think of for it.
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