• Adobe Premiere Pro

  Bloated Quicktime files plus a curious behavior

  Posted by Roger Miller on May 30, 2008 at 1:48 pm

  I am using Premiere 2.0 (CS2) and have a 53 second video that I needed to encode to Quicktime and I wish to target the data rate at 650 kbps.

  Using the encoder, I have the following settings:
  size = 640 x 480
  Frame rate = 29.97 (same as original)
  H.264 codec
  Square pixel
  24 bit color
  Audio = 16 bit integer (little Endian) 32 khz mono
  Data rate = 650 kbps

  After encoding, the resulting file is 55,960 k (56 megs)! When I play it back in Quicktime, the inspector tells me it is playing back at 8.59 mbits / second (which makes sense for the file size, but not for the size I specified!)

  So I thought I would test a few other bitrate settings. So I changed the bit rate all the way down to 5 kbps and left everything else the same and the resulting file came back in at 55,901k (still 56 megs) playing at 8.58 mbits / sec

  Just in case I was simply hallucinating, I went overboard in the other direction and specified 8,000 kbps. The finished file was 55,950k (still 56 meg) and the running data rate during playback was 8.59 mbits / second

  Now I can use Quicktime Pro to encode my file (and I did to hit my deadline)to the size I want.

  The question is this: Does the CS2 Adobe Media Encoder for Quicktime have a major bug, or do I have a maintenance step I need to do to get reasonable (or at least predictable) results in 1 step rather than 2? Clearly, there is a problem, but I am clueless as to what step I should take.

  Any thoughts?

  Roger Miller

  Roger Miller replied 17 years, 11 months ago 1 Member · 0 Replies
• 0 Replies

Reply to this Discussion! Login or Sign Up