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DESE900
New Participant
August 23, 2010
Question

huge file size when export

  • August 23, 2010
  • 5 replies
  • 35116 views

Ok so i use Premiere CS3 and when I want to export my video (one single audio track and one image as 'video', total of 5 - 6 minutes) i get a file size of 1.26 GB (!). The imported files have a total size of lower than 10MB. What I do is i export -> movie and choose AVI format. I've tried PAL & NTSC but there is only a slight difference in file size. How is it possible that this exported movie is so big?

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      5 replies

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      paulq73947763
      New Participant
      April 9, 2016

      Uhhhh...... mines a little bit bigger than yours 92 GB when it's done.....

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      DESE900Author
      New Participant
      August 23, 2010

      Thanks all for posting.

      My project settings have 'Optimize stills' checked on default under the Video Rendering tab.

      File -> Export movie -> Settings:

      File type: Microsoft DV Avi

      Compressor: DV NTSC

      30 fps

      Aspect Ratio D1/DV NTSC 0.9, Recompress checked

      Optimize stills checked

      Audio SR : 44100 hz

      What else could it be?

      Stan Jones
      Stan Jones
      Community Expert
      August 23, 2010

      Deselect optimize stills and try again.

      able123
      able123
      Inspiring
      August 23, 2010

      excellent going Stan !  60 meg will be much better than 1.2 gig, but still more than 10meg hehe...the question of 'WHY" has certainly been addressed, and also the followup of "now what ? "

      ps  which now leads to ( maybe ) Jim's suggestion re: other formats to export

      Stan Jones
      Stan Jones
      Community Expert
      August 23, 2010

      I've never made a video using a single still, so I never thought about this:

      See "Optimize Stills or Expand Stills" here:

      http://help.adobe.com/en_US/mediaencoder/cs/using/WS81733643-B4A6-45c5-ABD7-D5A90EB388FC.html

      I wonder if this would reduce file size on such an avi export?

      You couldn't apply any effects, etc.

      the_wine_snob
      the_wine_snob
      Inspiring
      August 23, 2010

      Stanley,

      IIRC, Optimize Stills was for use with AJA cards (or similar).

      Hunt

      Stan Jones
      Stan Jones
      Community Expert
      August 23, 2010

      It's a standard export option.

      Couldn't resist; did a quick test in CS4.  The option appears as an "Expand Stills" button in DV AVI export.  The default, however, appears to be not to expand.

      "Expand Stills" checked: file size (a 58 second bit in a NTSC DV sequence with the still and 48kHz audio) is 11 Meg.  Not checked (i.e. Optimize Stills): 215 Meg.

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      excited_Genie16B8
      Brainiac
      August 23, 2010

      How is it possible that this exported movie is so big?

      The two factors which determine file size are program duration and bitrate.  The longer your program is, the larger the file will be.  That part is often not adjustable.

      But the bitrate is.  Choosing Uncompressed will have the highest bitrate possible.  Choosing an MPEG variant (MPEG1, 2 or H.264) will allow you to lower the bitrate (and hence create a smaller file) while still achieving acceptable quality.

      Check your export settings, and adjust as required.

      able123
      able123
      Inspiring
      August 23, 2010

      That's certainly true , that saving as an avi file will be larger than saving as a more compressed video.

      The fact that you have one audio track and one still image ( which is small in byte count )...and what was stated earlier about the making of many "frames per second" from that one still image is in fact the reason you are seeing such a large size discrepancy. What Jim is saying about compression and bitrate is in this case a little bit of fine tuning with regard to the differences between types of compression and in general to your question has no real bearing on this in terms of the underlying reasons for such a BIG difference in your file size.

      able123
      able123
      Inspiring
      August 23, 2010

      when you choose avi format you will see something called " settings" ...when you open that up what do you have selected for your settings ??

      when you take a still image which is one little image...with a low byte count....and make it a "video" you are duplicating that little image many times...for example, at 30 frames per second, you are making thirty of those little images for every one second of video time.

      If you then multiply 30 of those images (per second) by the total amount of time of the video you get a WAY bigger file size than what you put on the timeline....know what I mean ??

      by using some "settings" on the avi file you may be able to "compress" the video a bit more than you currently are...but you will never get the same size file because you are making many frames ( still images) per second and all that adds up to a bigger file

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