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 Post subject: myth2ipod in 640x480 ?
PostPosted: Wed Sep 13, 2006 7:10 am 
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With the announcement of new resolutions for movies and tv shows for the ipod, how easy is it to change the resolution on our transcodings with myth2ipod to the higher res?


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 Post subject:
PostPosted: Wed Sep 13, 2006 9:04 am 
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Location: Philadelphia, PA US
myth2ipod using nuvexport and nuvexport support height width switches. So should be as easy as changing around 1 line in myth2ipod.sh


Code:
my $nuvoptions ="--mode=iPod --nice=19 --cutlist --width 640 --height 480  --nodenoise --nodeinterlace --nomultipass";


(not sure of exact switches for height width)


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 Post subject:
PostPosted: Wed Sep 13, 2006 11:31 am 
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Actually the --Ipod still forces it to 320x200 I think. I tried it with the width and height added, but it still forced that res. I'm thinking of changing Mode to something else...


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 Post subject:
PostPosted: Wed Sep 13, 2006 11:43 am 
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Location: Philadelphia, PA US
darkunderlord wrote:
Actually the --Ipod still forces it to 320x200 I think. I tried it with the width and height added, but it still forced that res. I'm thinking of changing Mode to something else...


There is a file ipod.pm somewhere, check in that.


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 Post subject:
PostPosted: Fri Sep 15, 2006 2:23 pm 
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Location: Central NJ
Code:
nano /usr/local/share/nuvexport/export/ffmpeg/iPod.pm

Look for:
Code:
# PAL or NTSC?
        my $standard = ($episode->{'finfo'}{'fps'} =~ /^2(?:5|4\.9)/) ? 'PAL' :$
        $self->{'width'}   = 320;
        $self->{'height'}  = ($standard eq 'PAL') ? '288' : '240';
        $self->{'out_fps'} = ($standard eq 'PAL') ? 25    : 29.97;

Change 320 to 640 (or preferred horizontal resolution)
Change 240 to 480 (or preferred vertical resolution)

You may want to increase your video bitrate to support the higher resolution. Look for:
Code:
  # Default bitrates
        $self->{'defaults'}{'v_bitrate'} = 384;

...and change 384 to whatever you want.

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 Post subject:
PostPosted: Fri Sep 15, 2006 2:31 pm 
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Ah, thanks I got the size part but the bitrate I didn't change yet. Thanks!


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 Post subject:
PostPosted: Fri Sep 15, 2006 7:29 pm 
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Location: Virginia, USA
If you can confirm that 640x480 files work on the iPod, let us know. I tried making some 640x480 H.264 files using MPEG Streamclip on the Mac and iTunes refused to put them on the iPod saying that they weren't valid video files.


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 Post subject:
PostPosted: Sat Sep 16, 2006 12:39 pm 
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After a firmware update, for sure the fix above works. I only did the dimension change though, not the bitrate yet. Go for it, it looks pretty good too, for an ipod.


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 Post subject:
PostPosted: Mon Sep 18, 2006 3:49 pm 
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I can see increasing the resolution to watch on a 640x480 Pocket PC screen, but why bother increasing the videos to 640x480 just to have the Ipod downscale them to 320x240?

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 Post subject:
PostPosted: Mon Sep 18, 2006 5:19 pm 
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ed3120 wrote:
but why bother increasing the videos to 640x480 just to have the Ipod downscale them to 320x240?


I think you may be right. I was under impression new iPod supported 640x480, but after some reseach that sounds to just be a marketing tool to sell higher res videos on iTunes. Sounds like the higher res won't do anything until next line of products in 2007 with iTV. Who wants to watch a full length movie in iTunes?

Apple really is just a marketing and hype machine.

http://www.camcorderinfo.com/content/Ap ... r-iPod.htm


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 Post subject:
PostPosted: Mon Sep 18, 2006 5:28 pm 
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ed3120 wrote:
why bother increasing the videos to 640x480 just to have the Ipod downscale them to 320x240?


It's for when you're playing your iPod through a TV set. It's a noticeable improvement there.


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 Post subject:
PostPosted: Thu Sep 21, 2006 6:52 am 
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ceenvee703 wrote:
ed3120 wrote:
why bother increasing the videos to 640x480 just to have the Ipod downscale them to 320x240?


It's for when you're playing your iPod through a TV set. It's a noticeable improvement there.


You are right, although I doubt many people are utilizing that feature. I think the convenience here is that you can download a video at up to 640x480 and not be forced to run it through a converter before copying it to your Ipod.

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 Post subject:
PostPosted: Thu Sep 21, 2006 6:54 am 
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So the iPod can only do 320x200 still? Does anyone REALLY know from specs that it is the highest capable resolution of the screen?


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 Post subject:
PostPosted: Thu Sep 21, 2006 8:14 am 
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The Ipod's native screen resolution is 320x240 pixels. Any video higher than that is downscaled. It will play videos within the following specifications.

Code:
Video formats supported: H.264 video, up to 1.5 Mbps, 640 by 480 pixels, 30 frames per sec., Baseline Low-Complexity Profile with AAC-LC audio up to 160 Kbps, 48 kHz, stereo audio in .m4v, .mp4, and .mov file formats; H.264 video, up to 768 Kbps, 320 by 240 pixels, 30 frames per sec., Baseline Profile up to Level 1.3 with AAC-LC audio up to 160 Kbps, 48 kHz, stereo audio in .m4v, .mp4, and .mov file formats; MPEG-4 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per sec., Simple Profile with AAC-LC audio up to 160 Kbps, 48 kHz, stereo audio in .m4v, .mp4, and .mov file formats


source: http://www.apple.com/ipod/specs.html

I don't not know what Ipod's output resolution capabilities are for the add-on TV-out accessory.[/code]

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Currently running: R5.5, HD5000 x 2, PVR150, Athlon 64 3000+, Chaintech VNF4, 1GB RAM, 2 x 250GB in LVM, MSI NX6200TC -> AA 9A60 -> HDTV


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 Post subject:
PostPosted: Sun Oct 15, 2006 11:30 am 
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Location: Maryland
For now, the change in resolution is more a function of the iTV product than the iPod.

Currently the iPod is 320 x 240. However, the iTV is designed to drive a tv set. Video content on iTMS was set to 320 x 240 (which is designed for the iPod).

That may be ok for watching music videos and tv shows, but they felt it wasn't good enough of an experince for a movie. 640 x 480 is a good target resolution for TV's. Hence the move to 640 x 480

The current iPod may be designed for a maximum of 320, but the (new) rummored iPod has a native widescreen landscape look, and has no buttons on it, just one screen. This kind of device would be perfect for the content being created now at 640 x 480.

Expect to see it perhaps in January?


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