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Compressing Blu-rays

Does the new Nero 14 Recode compress non-copy protected 50GB Blu-rays to fit on a 25GB Blu-ray. I used to do this with DVDs in nero10 and it worked flawless. Now that I upgraded to nero 12 I can't compress blu-rays (even movie only) to recode down to at least 23 GB.

John
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  • Not that I'm aware of.

    I also couldn't find that ability in any of the Copy Disc options in either Burning Rom or Nero Express.

    You could copy the BD-MV folder off the disc and import the stream into Nero Video and burn it to a 25 Gb disc. Of course, you lose the menus, etc.
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  • Hi,

    DVDs are encoded in MPEG2. MPEG2 allows a process called re-quantization. Means that the video quality and therefore the file size can be changed re-using most of the encoded material resulting in re-quantization being much, much faster than encoding the file again.

    Some Blu-Rays also use MPEG2 but most use AVC or VC1 that don't allow re-quantization but re-quire a full file encoding. Therefore the approach is different in the Nero software.
    Step 1: Convert your Blu-Ray into an AVC file smaller 25 GB with a Blu-Ray compatible output setting
    Step 2: Import this file in Nero Video and author a Blu-Ray with it (due to Nero Videos smart encoding the file won't need to be re-encoded in Nero Video again, make sure that you see the Video SmartEncoding Rate 100% on the last screen in Nero Video).
    Hope this explains.
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