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Compressor for iphone

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Jacques Hinkle
Compressor for iphone
on Mar 8, 2010 at 11:03:19 pm

Hi,

I've been trying all day and haven't been able to figure out how to create video for the iphone that plays full screen when it's zoomed out. Basically I don't want to see black anywhere around the frame ever.
is this an aspect ratio/cropping issue? Any input is great appreciated!!

I'm using final cut studio 2

Thanks!!


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John Fishback
Re: Compressor for iphone
on Mar 8, 2010 at 11:21:37 pm

I don't remember if FCS 2 had Compressor presets for the iPhone. FCS3 does. Here are the details of the preset:

Name: H.264 for iPod video and iPhone 320x240 (QVGA)
Description: H.264 video @ 600 kbps, progressive, multi-pass. Audio is 44.1kHz, stereo
File Extension: m4v
Estimated size: 257.93 MB/hour of source
Device: iPod/iPhone QVGA
Frame sync rate: 5 seconds
Video Encoder
Format: QT
Width and Height: Automatic
Pixel aspect ratio: Square
Crop: None
Padding: None
Frame rate: (100% of source)
Frame Controls: Automatically selected: Off
Codec Type: H.264
Multi-pass: On, frame reorder: Off
Pixel depth: 24
Spatial quality: 50
Min. Spatial quality: 50
Key frame interval: 120
Temporal quality: 50
Min. temporal quality: 50
Average data rate: 0.6 (Mbps)
Maximum data rate: 0.768 (Mbps)
Audio Encoder
Format: MPEG4
Sample Rate: 44.100kHz
Channels: 2
Bits Per Sample: 16
AAC encoder quality: high
Data rate: 128 Kbps


John

MacPro 8-core 2.8GHz 8 GB RAM OS 10.5.8 QT7.6.4 Kona 3 Dual Cinema 23 ATI Radeon HD 3870, 24" TV-Logic Monitor, ATTO ExpressSAS R380 RAID Adapter, PDE enclosure with 8-drive 6TB RAID 5
FCS 3 (FCP 7.0.1, Motion 4.0.1, Comp 3.5.1, DVDSP 4.2.2, Color 1.5.1)

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Jacques Hinkle
Re: Compressor for iphone
on Mar 8, 2010 at 11:41:03 pm

Thanks for your reply! CS2 does have presets for the iphone. I tried changing them to what your response showed and when the view is zoomed out it still shows black on the top and bottom of the screen. Basically I can't have black anywhere when zoomed out.

I really appreciate your help John!

Thanks,
Jacques


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Michael Sacci
Re: Compressor for iphone
on Mar 9, 2010 at 12:03:51 am

I think you are trying to defeat a feature that is built into the iPhone QT player.

When playing back video the QT has 2 settings full view which gives you the true 16:9 image with the letterbox or zoomed in, which crops off the left and right to fill the tip and bottom without distortion. Cause the screen is neither 4:3 or 16:9. I'm probably telling you something you already know but for others.

The iPhone screen is 480x320 so have you tried that? If that doesn't help you maybe fighting against the software itself.




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Erik Lindahl
Re: Compressor for iphone
on Mar 9, 2010 at 9:56:26 am

Was going to add that the iPhone screen is 480-by-320-pixel, not 320x240.

25 / 30 fps, 480x320 pixles at below 1.5Mbit/s will run on the iPhone with ease.

As mentioned above, the iPhone-screen as a 1.5:1 aspect ratio, so either 1.78:1 (i.e. 16x9) nor 1.33:1 (i.e. 4x3). To accommodate this you will have to crop some of your base material.

------------------------
Erik Lindahl
Freecloud Post Production Services
http://www.freecloud.se


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