• Adobe After Effects

  HDV file size

  Posted by Tayren0319 on September 7, 2006 at 2:49 am

  Hi…I own http://www.choicebackgrounds.com and I’ve had a few clients ask for High Def backgrounds. All of the current backgrounds that I sell are compressed to keep the file sizes down, but when I tested a simple 12 second HDV animation in AE 7.0 compressed (Sorenson 3 is what I use for QT) it looked horrible. I rendered it again fully uncompressed and it was over 2Gb!! That definately puts it out of the downloadable range! So, my question is…is it even possible for me to offer HDV backgrounds via download? Is there a compression that would work without losing too much quality? Could I offer 16×9 SD that people could use in HD projects? (I know very little about HD!)

  Thanks so much!
  Jennifer

  Steve Roberts replied 19 years, 8 months ago 3 Members · 2 Replies
• 2 Replies

• 

  Stefan Tapper

  September 7, 2006 at 5:37 am

  If you want to deliver really lossless video you should try the microcosm codec from digitalanarchy.com. But even with this handy codec you will end up with hundreads of megabytes since its completly lossless.

  For computer animation or videogame footgae I never found a more effective lossy codec than Motion JPEG or Photo JPEG. Try them at around 80-95% quality. They will work great in any editing application.
  The Sorenson codec is great for playback but rather good for editing because it works a lot with b and i-frames. This means it doesnt contains all image information in every frame. It just includes update information for every followed frame depending on the motion of the video.

  SD in 16:9 would only change the pixel ratio and therefore there would be no additional image information added to the footage. For HD the images have to be at least 1280 pixels wide and 720 pixels high. The highest HD res is 1920×1080. The framerate in HD is different though. There are a lot of different formats with different framerates but I’d say you wouldn’t do that much wrong with 1280×720 at 30 frames per second(progressive).
• 

  Steve Roberts

  September 7, 2006 at 1:10 pm

  Artbeats uses Photo-JPEG, and from reading their site, I gather that their HD clips are delivered on data DVD, not downloaded.

  I think it would be too much to expect to download HD clips, and that an overnight courier service would be reasonable.

  (my 2 cents)

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