• Avid Media Composer

  AVID DVD – making a Blu ray

  Posted by Peter Groom on March 30, 2011 at 2:14 pm

  Hi
  If I import a qt ref file of an HD seq into AVID DVD to make a blu ray, what data rate should I be aiming for to maintain picture quality.
  Also, where do I adjust this rate.
  Cheers
  Peter

  Post Production Dubbing Mixer

  Peter Groom replied 15 years, 5 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Michael Kammes

  March 30, 2011 at 2:48 pm

  Depends on Codec – are you going for MPEG2 or H.264?

  MPEG2 – easier to encode, to retain picture quality you got with a higher bitrate, less content can fit on a disk. Ballpark 2 hours of total material on a single 25GB disc.

  h.264 – harder to encode, you can get better quality at lower bitrates, thus allowing more data on a disk. Ballpark 3.5-4hrs of total material on a 25GB disc.

  VC1 – I’m not even sure this is supported by Avid DVD.

  You can’t mix codecs on a disc.

  Your total (video) bitrate cannot exceed 48Mbits/sec, with 40Mbits of that max for video.

  That being said, I rarely see h.264 exceed 20Mbits/s, and MPEG2 rarely above 25mbits/s – you just don’t get much more for the extra bits.

  ~Michael

  .: michael kammes mpse
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• 

  Peter Groom

  March 31, 2011 at 9:44 am

  Thanks Michael.
  Ill have a look at what options im presented with in AVID DVD when i get a chance and cross reference to your thoughts.
  Cheers for the prompt response.
  Peter

  Post Production Dubbing Mixer

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