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Old January 3rd, 2006, 12:11 PM   #1
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Question about exporting to iPod

I've had no problems exporting DV to my iPod with the QT Conversion iPod option, but when I try something shot and editing with 1440x1080i Sony HDV, it never letterboxes, nor does it go anamorphic--it just stays stretched out vertically. What do I need to do to make it work and letterbox?

Thanks,

Heath
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Old January 4th, 2006, 10:22 PM   #2
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Try downloading the free app iSquint it is a lot faster that Quicktime for ipod encoding, the site says it is compatible with HDV, but I have never tried so your mileage may vary
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Old January 4th, 2006, 11:35 PM   #3
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Thanks. I had to do a work-around: export to 10 bit uncompressed and go from there.

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Old January 5th, 2006, 07:26 AM   #4
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I'm going to try to export a few of Kaku's HVX clips to my iPod today. I want to see how they look and compare them to some iPod movies I exported from GL2 footage. Glad to see you doing this as well Heath. Probably took 2 seconds on your Quad!
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Old January 5th, 2006, 08:18 AM   #5
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Heath,

Thanks for the information. I did as you suggested and then opend up the new uncompressed file as a new project. I then exported this to the iPod settings. It looks much better, but is still not 16:9. Did I miss a step? Thank you.

Nate,

The iSquint worked great, I'd just like to keep it all in FCP if possible. But it is a solution as well. Handy little program! Thanks.

Last edited by Guest; January 5th, 2006 at 07:29 PM.
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Old January 5th, 2006, 09:26 PM   #6
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I set up some presets in compressor 1 to do my ipod encodes. They should also work for Compressor 2, but I haven't tried them.

Throw this folder into Library/Application Support/Compressor

http://homepage.mac.com/timdashwood/.Public/iPod.zip

After much research, I created them for max spec H.264 (750Kbps) and max MP4 (2.5Mbps) and half spec MP4 (1.2Mbps).
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Old January 6th, 2006, 12:16 AM   #7
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Thanks, Tim!

hwm
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Old January 6th, 2006, 07:10 AM   #8
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Heath - FFmpegX is the thing for you.

Version 0.9u has iPod presents.
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Old January 12th, 2006, 09:58 PM   #9
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Heath:

1. Make a new sequence that has a 4:3 aspect ratio (Sequence>Settings) by setting the first option to Large Multimedia (this gives you a 320 x 240 image size). Then, set the second option to NTSC 720 x 480 (yes, that is a ratio of 1.5 and not 1.33) but that is what they have and it ends up working.

2. Open the new 4:3 sequence in the timeline

3. Hit the "Home" key to make sure the playhead is at the first frame

3. Next, take your original HDV 1080i60 sequence (in 16:9 format) and drag the sequence over the canvas and choose overwrite

This will insert your old 16:9 sequence into the new 4:3 sequence and automatically letterbox it.

4. Save then render the new sequence

5. Output it through the QT Conversion iPod option

That is it, other than rendering and outputting, it should take less than 5 minutes.

Good luck!

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Old January 12th, 2006, 11:19 PM   #10
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I'll give it a shot this weekend.

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Old January 13th, 2006, 01:35 AM   #11
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Heath:

A correction to the process I outlined above. The first step should read:

1. Make a new sequence that has a 4:3 aspect ratio (Sequence > Settings). Simply open up the settings for the sequence and set the second option (Pixel Aspect Ratio) to NTSC - CCIR 601/DV (720 x 480). Yes, that is a ratio of 1.5 and not 1.33, but that is what they have and it ends up working.

This is the only item you need to change. I'm sorry for the mistake. If you do it the way I originally suggest, the rendered sequence will be poor quality. Keep Frame Size at 1440 x 1080 to preserve maximum quality.

By doing it this way, you can output different letterboxed frame sizes. For instance, you can output a iPod version at 320 x 240 or a non-H.264 letterboxed version for web delivery.

Good luck!

Jeff
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Old January 13th, 2006, 10:39 PM   #12
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Anyone know how to get higher resolution vieo on Ipod beyond the 320-240 limitation. I heard somewhere, I believe it was HDforindies.com, that there was some kind of workaround... This would be great for presentations and portfolio showing...

Tim, great presets! Any suggestion for pal?
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Old January 13th, 2006, 10:51 PM   #13
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I've been doing alot of research on encoding video for ipod and discovered some interesting things. (iLounge is a great resource for this info.)

Apple posts max specs of 320 x 240 at 768kbps in H.264 or 480x480 at 2500kbps in MP4.

The great thing is that you can break the pixel dimension rules in many ways to achieve higher quality video. Of course everything gets downscaled to 320 horizontal rez on the actual ipod screen, but the native rez is output to a TV when you use the video cable.

Here's the secret to ipod video: The actual resolution limits are 300 macroblocks for H.264 or 900 macroblocks for MP4.

For example
-320 pixels divided by 16 = 20
-240 pixels divided by 16 = 15
- 15 x 20 = 300, therefore 320 x 240 meets the 300 macroblock limit for H.264.

That's great for 4x3, but let's say you want to encode something that is 16x9. Why waste space on black bars when you only need to encode the actual 16x9 content?

The dimensions I found that work well for 16x9 in H.264 are 368 x 208.
So 368 pixels divided by 16 = 23
208 pixels divided by 16 = 13
23 x 13 = 299 macroblocks. Therefore under the 300 macroblock limit.

Now, for MP4 the macroblock limit is much bigger at 900.

So for 4x3 MP4 you could go as high as 553 x 416
For 16x9 MP4 you can go up to 640*360 --- that's DVD quality!!!!

Just remember to keep the bitrates under 768kbps for H.264 or 2500kbps for MP4.
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Old January 13th, 2006, 10:56 PM   #14
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Quote:
Originally Posted by Sergio Perez
Tim, great presets! Any suggestion for pal?
Just change the frame rate of my 24P setting to 25P and use the same dimensions.
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Old January 14th, 2006, 04:49 PM   #15
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Tim, when I installed your presets the mp4's worked great but my iPod won't recognize the h.264 ones any ideas?
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