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Help Exporting
Posted by Nick Esposito on April 10, 2007 at 4:27 pmHI I have to get to here from after effects:
MPEG2 50Mb/s I frame only.
I’m embarased to say I don’t understand exactally how to accomplish this with the mpeg settings in AE.
Can you help?
Cheers!
Nick EspoDarby Edelen replied 19 years ago 3 Members · 5 Replies -
5 Replies
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Iancorey
April 10, 2007 at 4:49 pmusing AE to make mpeg2’s is like putting training wheels on Lance Armstrong’s bicycle
Dave Emm Effing LaRonde.
Use Compressor. There are built-in presets for DVD.
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Nick Esposito
April 10, 2007 at 4:50 pmWhen you say “like putting training wheels on Lance Armstrong’s bicycle” that means it’s going to look bad?
It’s a music video so render time dosen’t seem so bad.All I have otherwise is procoder and premire are one of those better?
ALSO it’s going to the UK. Do you think I should convert it to pal durring the conversion to mpg or ask them to do it over there?
Thanks!!!!!!!!!!!!
Cheers!
Nick Espo -
Darby Edelen
April 10, 2007 at 5:26 pm[Nick_Espo] “MPEG2 50Mb/s I frame only.”
Was that supposed to be 5Mb/s? Fifty is outrageously high and would choke just about every DVD player on the market (above 8Mb/s and you’re risking this), of course I begin to wonder if this render is headed for DVD if your client is requesting 50Mb/s and I frames only (you might have enough compression then to fit 12 minutes of MPEG-2 on a full DVD-5).
I frames are keyframes in which the entire picture’s data is encoded, generally these appear every 15 frames in MPEG-2 encoding, the frames in between I frames are P or B frames and do not contain all of the picture’s data (only the differences between the previous frame and themselves) and so need much less data to be represented.
While it is possible to make every frame an I frame, it is unorthodox and doesn’t conform to DVD standards. You lose some of the major benefits of compressing in MPEG-2 with this technique.
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Nick Esposito
April 10, 2007 at 5:54 pmThis is broadcast spec for uk not dvd.
I assume the 50 was meant to be 5 I’ll email to confirm but I’d like to ask all the questions at once
Cheers!
Nick Espo -
Darby Edelen
April 10, 2007 at 9:59 pm[Nick_Espo] “This is broadcast spec for uk not dvd.”
If it’s going to be broadcast my guess is they’re just trying to compress whatever this is enough to fit on optical media for you to deliver to them. MPEG-2 is a fairly good encoding method to maintain image quality while lowering data rate, however I’m surprised that they wouldn’t prefer you to output an uncompressed rendering to tape.
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