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right compression for television - 16:9 anamorphic

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Marta Mancusi
right compression for television - 16:9 anamorphic
on Sep 12, 2013 at 9:40:42 am

Hello everyone, I have a question about compression for television,
I have to submit a 30 seconds video for an italian television. They asked me a 16:9 anamorphic format and the video has to be maximum 10 M.
I exported the video in full HD from after effects. Then I imported it in Adobe Media encoder and exported it again using the PAL DV Wildscreen 25fps preset/format Quicktime.
Is that correct for a 16:9 anamorphic file?
I got a video that is 108,5 MB. How can I compress it to get to a 10 M file, not loosing the 16:9 anamorphic format?
Any help is appreciated!
Thank you very much
Marta


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Craig Seeman
Re: right compression for television - 16:9 anamorphic
on Sep 12, 2013 at 2:30:58 pm

Basic high school math.

A car going at 100 kilometers per hour travels two hours has traveled 200 kilometers.
kbps times duration equals file size.

Don't take it personally but I don't know why this math seems to be such a challenge for anyone who graduated high school let alone college.



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Craig Seeman
Re: right compression for television - 16:9 anamorphic
on Sep 12, 2013 at 2:49:32 pm

BTW, you can't change the data rate for DV. It's built into the codec.
If they're giving you data rate along with the duration, they can't be asking for DV.



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Ivan Myles
Re: right compression for television - 16:9 anamorphic
on Sep 12, 2013 at 4:44:56 pm

To expand on Craig's comments, QuickTime DV is available at 25mbps and 50mbps. A 30-second video stream will require 94MB at DV25 or 188MB at DV50. With the audio and overhead included 108MB sounds about right.

DV is an all intra-frame format. In order to compress the file to 10MB, use a codec like H.264 or MPEG-2 that incorporates inter-frame compression.


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