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Blu-Ray backup & encoding

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jagabo
Member


Joined: 09 Dec 2005
Location: none

Post Posted: Apr 13, 2008 08:12 Posts Comp View users profile Send private message Reply with quote

You don't need the Jake Ludington's mod -- just use DirectShowSource where he tells you to use MT2S Editing (all he did was make a copy of DirectShow.avst and rename it MT2S Editing.avst).



Donald Graft's Smart Deinterlace filter (referenced in his article) can be found here:
http://www.thedeemon.com/VirtualDubFilters/


ironwood321
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Joined: 24 May 2001
Location: Bolton, UK

Post Posted: Jun 01, 2008 07:00 Posts View users profile Send private message Reply with quote

The thing that puzzles me is why do you want to rencode a high resolution source down to a low resolution source? Would it not be easier to get the equivalent DVD and just use that as your starting point?
With all the reductions in resolution, frame rate and bitrate you end up with something equivalent to ripping and down converting from DVD. Each step you move further away from the primary introducing artefacts into the video as you go down.

Are there many things available in Blu-ray and HDDVD which are not available in there equivalent DVD sources?

Is it feasible to play HD sources at full resolution in AVI/WMV etc? Can modern hardware cope? Or have you got to also reduce the quality even further by playing with the bitrates/frame rate? Does this not defeat the object?

I'm ok with say HDDVD to Blu-ray and vicer versa and Protected HD-DVD / Blu-ray to there equivalent writable formats but at the moment down conversion seems pointless.


GeeForce11
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Joined: 21 Feb 2008
Location: United States

Post Posted: Jun 01, 2008 10:32 Posts Comp View users profile Send private message Reply with quote

I encoded lots of BD movies to XviD/AC3 .avi format keeping the original 1920x1080 resolution and minimal loss of quality @ 6Mbps. It's like a 1-1 copy of the original disc during playback, easy to store, the size is a fraction of the original and don't have to bother using all the time the original discs. CPU usage is around 20-25% load on my 2.6GHz X2 during avi playback, while during the BD disc playback is 75-100% CPU load, sometimes it's even skipping because it cannot cope with the load as my old video card doesn't help out the CPU with the HD playback.

ironwood321
Member


Joined: 24 May 2001
Location: Bolton, UK

Post Posted: Jun 02, 2008 12:56 Posts View users profile Send private message Reply with quote

The trouble is 6Mbps for 1920x1080 resolution @ 23.976fps is a very very low bitrate for such a high resolution video. Basically because of the higher resolution you are having to be shifting more bits.
Early codec's would have been very blocky and pixelated but later codec like xvid smooth the blockyness. Therefore you will end up with a more smeared video. What you have gained in resolution you've lost in clarity.

Like the old Precision vs. Accuracy argument.


kdaddy
Member


Joined: 02 Jul 2008
Location: Canada

Post Posted: Jul 02, 2008 18:04 Posts Comp View users profile Send private message Reply with quote

What you have gained in resolution you've lost in clarity.

Like the old Precision vs. Accuracy argument.[/quote]

I've recently researched BD Back-up and it makes perfect sense for me and my htpc-my display is only 720p so trueHd is really wasted on it and there's no way I'm letting the kids touch a $30 disc so taking the BD content down to 720 and burning BD format on 4.7 GB is a perfect solution.
Hey GeeForce11, don't you like h264 codec or mkv container? TSMuxer takes these and makes nice BD's.


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