my ipod plays video at 720x400

Discussion in 'iPod' started by kgarchar, Oct 8, 2006.

  1. kgarchar macrumors 6502

    Joined:
    Sep 21, 2006
    #1
    i didn't think it could do this, but i forgot to change the settings in handbrake when i ripped my lost dvds...what is the max quality that it can play?

    i was wondering if it plays this because 720x400 < 640x480
     
  2. Chundles macrumors G4

    Chundles

    Joined:
    Jul 4, 2005
    #2
    That's probably the reason but what I'm interested in is the settings you used. Did you encode with MPEG-4 or H.264? What bit rate? Do they look good?

    I'm so jonesing for a new 5.5G iPod to replace my 3G - it's really starting to cough and splutter.
     
  3. HelixOmnimedia macrumors 6502a

    HelixOmnimedia

    Joined:
    Jul 26, 2006
    Location:
    Traveling The World
    #3
    :eek: So you're using HandBrake? I've been trying to rip my Season 1 of Lost for the last year, and Season 2 for about a couple of weeks. But HandBrake doesn't allow them to be opended. It scans the titles and then nothing!

    What region is your drive? and what region are the Lost DVDs?
     
  4. Synapple macrumors regular

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    Mar 29, 2004
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    Rome, Italy
    #4
    Well, I did not rip them at the miraculous settings the OP is suggesting (which I would love to try out, BTW :eek: ) but I did rip all of the first season of Lost and transferred it onto my iPod right last night.

    My drive is region 2 as are my Lost DVDs.
    Handbreak scanned them and ripped them as usual.

    The only problem I had was with the first disc where it ripped the two parts of the pilot twice, instead of ripping episode 3 and 4.
    I am gonna try and re-rip the first disc when I am back from work.
    All other discs worked flawlessly.
     
  5. NicP macrumors 6502

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    Jun 14, 2005
    #5
    I assume you are using MPEG4, the maximum number of pixels the ipod supports is 307200. 640*480 = 307200 pixels, 740*400 = 296000 pixels
     
  6. amin macrumors 6502a

    amin

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    Aug 17, 2003
    Location:
    Boston, MA
    #6
    640x480 represents the max number of total pixels, as NicP pointed out. This is true for both MPEG-4 as well as Low-Complexity Baseline H.264. I routinely put videos at their native resolution on my 80GB iPod. I use Handbrake with the following settings:

    - Framerate: Same as source
    - Encoder: FFmpeg
    - Quality: Average bitrate: 2200 kbps
    - 2-pass encoding
    - File format: MP4 file
    - Codecs: MPEG-4 Video / AAC Audio
    - Audio settings all at default
    - Picture settings at native settings: 640 wide for "full frame" video, 720 wide for widescreen video, aspect ratio fixed. Choose "deinterlace" if preview screens show lots of horizontal lines.

    Simple and effective with very good results. I wonder if H.264 will give me better results at 1500 kbps than I get using MPEG-4 at 2200 kbps?
     
  7. amin macrumors 6502a

    amin

    Joined:
    Aug 17, 2003
    Location:
    Boston, MA
    #7
    Chundles, my 4G coughed and spluttered much, so I replaced it with an 80GB iPod. Very happy with the video output and overall capabilities. Would be nice if the screen were larger (even at the same pixel count), but oh well.
     
  8. Synapple macrumors regular

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    Mar 29, 2004
    Location:
    Rome, Italy
    #8
    amin can I ask you how many MB/GB do those files end up being? I would love to rip at the settings you suggest but I am a little worried about how many files I could fit onto my 30GB iPod, considering I've got 15+GB of music and pix.

    Thanks :)
     
  9. MacinJosh macrumors 6502a

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    Jan 29, 2006
    Location:
    Finland
    #9
    You guys have it wrong. It's NOT just the amount of pixels that matter but the macroblocks.

    MPEG-4 is limited to a maximum of 900 16x16 macroblocks. It works this way:

    720x400 (which is 16:9): 720/16=45 x 400/16=25 45x25=1125. Also the pixel count is over 230400

    So in short, Handbrake does not support Baseline Low-Complexity profile so you can't make a H.264 of that size to work on your iPod and the MPEG-4 file won't play on your iPod either as it exceeds both the pixel and macroblock count.

    The new H.264 has a macroblock limit of 1200 so theoretically the iPod should play 720x400 H.264 files. I have yet to 100% confirm this.

    Joshua.
     
  10. MacinJosh macrumors 6502a

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    Finland
    #10
    No no no. MPEG-4 has a maximum pixel count of 230400 (480x480).
    H.264 on the other hand does 640x480. See my previous post on macroblocks.

    Joshua.
     
  11. Chundles macrumors G4

    Chundles

    Joined:
    Jul 4, 2005
    #11
    Except the OP's iPod DOES play MPEG-4 video at 720x400, something you said it cannot do.

    I think the new iPod software upped the macroblock limit on all formats not just H.264.
     
  12. MacinJosh macrumors 6502a

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    Jan 29, 2006
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    Finland
    #12
    I had to try it for myself. It does work indeed. So everything I said previously is not true anymore... Embarrasing really :)

    So it definately seems the the new firmware upgraded all the formats as you said. I wonder what the current macroblock limit is...

    UPDATE: From Apple's website: 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

    That means a total a maximum pixel count of 307200 but more importantly maximum macroblock count of 1200 (640/16x480/16).

    Joshua.
     
  13. MacinJosh macrumors 6502a

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    #13
    Can someone else confirm/try 720x400 H.264 playback on iPod?
     
  14. MacinJosh macrumors 6502a

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    Jan 29, 2006
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    #14
    Why not use the target size feature in Handbrake? It'll calculate the average bitrate needed to fit movie/video in the desired size.
     
  15. Chundles macrumors G4

    Chundles

    Joined:
    Jul 4, 2005
    #15
    Won't work because as you said, Handbrake currently can't do Baseline LC. The only H.264 content you can get at the moment is either 640xwhatever from the iTunes Store or the older 320x240 stuff ripped in Handbrake. It's highly possible it will work but until Handbrake gets Baseline LC as an option nobody will be able to test.
     
  16. dwishbone macrumors regular

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    On the Moon
    #16
    from the developer forums at handbrake's site it looks like they are getting close, but there are still no public builds. the latest source will work supposedly if you download and build it yourself.
     
  17. Synapple macrumors regular

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    Mar 29, 2004
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    #17
    Oh thanks, I didn't know handbreak had that feature.
    I'm away from my Mac but I'll try this tonight. :)
     
  18. MacinJosh macrumors 6502a

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    Jan 29, 2006
    Location:
    Finland
    #18
    ffmpegx and VisualHub (I own both) do Baseline LC but neither produce a valid 720x400.

    The weird thing here is that I was absolutely sure that I succesfully tested a 720x400 H.264 file on my iPod. I had exported a 720x400 resolution movie clip in QT to iPod and it had kept the resolution intact at said resolution.

    Now, however, I can't succesfully replicate the test. QT automatically changes the resolution to 640x*. So it's either:

    1: I was on drugs (not possible) or was experiencing temporary insanity during the testing.

    2: Something has changed (updates, whatever) on my computer so I can't do it anymore.

    That's why I'd like to know if anyone else here has done it.

    Joshua.
     
  19. Chundles macrumors G4

    Chundles

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    Jul 4, 2005
    #19
    Gee those guys are quick!! I love open source!

    Can't wait for the new build.
     
  20. milo macrumors 604

    Joined:
    Sep 23, 2003
    #20
    So what would be maximum height available with 720 wide? 400?

    And if someone successfully created a 720xWhatever movie that played on iPod, could you please share the specific software and settings you used? I've stopped ripping my DVD collection since the new bigger format appeared - I don't have any software that rips dvd to it.
     
  21. MacinJosh macrumors 6502a

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    Jan 29, 2006
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    Finland
    #21
    Yes. No go on intel Macs though :(

    Joshua.
     
  22. dwishbone macrumors regular

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    Jul 24, 2002
    Location:
    On the Moon
    #22
    yeah. the forums say the build is pretty unstable at this point but it does work. i posted it in the main encoding thread here. it appears the actual codec apple is using (the supposed Baseline LC) is actually the same as the normal Baseline. the only difference is apple seems to be doing what is in effect an internal watermark into its iPod converted files from Quicktime/iTunes. if these little bits of data are not present it will not transfer/play onto an iPod. what the latest builds do is it injects this bit of code into the handbrake outputted files.
    so any H.264 file over 320x240 must have this data or it won't work.
     
  23. MacinJosh macrumors 6502a

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    #23
    Ahh... I see. I wonder if this is how VisualHub and ffmpegx have managed it then...
     
  24. Chundles macrumors G4

    Chundles

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    Jul 4, 2005
    #24
    As of about 15 minutes ago, VersionTracker is showing a new build of VisualHub. Just a heads-up if you haven't got it.
     
  25. MacinJosh macrumors 6502a

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    Jan 29, 2006
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    Finland
    #25
    Thanks :) Got it 30mins ago though. I ran a 720x400 test again on it but still no go.

    Joshua.
     

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