Converting Movies resolution question

Discussion in 'iPad Help' started by Lifet1me, May 17, 2010.

  1. Lifet1me
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    Lifet1me iPad Fan

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    I had some trouble with a converted Movie File, i converted a Movie to x264 mp4, 1240x720, as this is the resolution mostly said for the IPad.

    The movie itself had a lower resolution.

    Well converting worked, took 4 hours, but after this my PC went CPU 100% once i opend the folder with the mp4 in it...

    My question is: Should i rather set resolution and anything to default/automatic instead of forcing the IPad resolution? And if yes will the IPad display the movie as a tiny Window or full screen?
  2. lilman
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    lilman iPF Novice

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    I recommend using 640x480, h264, at least 1500kbps video (I use 2000kbps), and 128kbps audio. By keeping it at 640x480 you should still be able to sync the same videos with a video iPod. If you don't have a video iPod then use 720x480 as this is the native resolution of dvds.

    Even if you don't use 1280x720 the video will still fill up the screen. The iPad screen is 1024x768, so only use settings larger than that if you plan to hook up your iPad to an HD tv. Videos smaller than 1024x768 get stretched to fill the screen, but if you use the hq settings I listed above (with 2000+kbps video) you won't even notice the stretching... the videos look just like the dvd.
  3. Lifet1me
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    Lifet1me iPad Fan

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    I plan to hook up with an HD TV, but im happy as long as the original DvD Quality will be displayed on the IPad, no worries about the HD TV, maybe in a few years i get a double size HDTV, at least then i would have to reconvert any Movie and thats a hell lot of work i just wont do.
    A little less quality on the HDTV is ok for me.

    Thanks for the answer.
  4. NumbLock
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    NumbLock iPad Ninja

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    H264 is a good choice, but you should always choose a resolution the same or lower than the original - going up doesn't make it better.

    Also, the resolution you chose is probably too high anyway.

    Higher resolution takes longer to convert and the disk size is correspondingly larger.

    Remember the maximum resolution the iPad can display is 1024 x 768, so always choose a resolution that will fit to one of those number.

    For example, if you converted to 720p (1280×720) you would have some zoom factor to play with during the video, so you could choose between wide screen and black bands at the top and bottom, or full screen with some details of the movie cut off of the left and right.

    Eddit: Oh, and as lilman pointed out, choosing too low of a bitrate will make even high resolution video look crappy.
  5. Lifet1me
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    Lifet1me iPad Fan

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    I got it now, it makes sense that theres only trouble by setting the resolution higher than the sourcevideo.
    Made a conversion with XMedia yesterday, the audiostream plays a bit later than the video, so the conversation fails imo, tried handbrake today morning, will have a look once i got home in a hour.
  6. Lifet1me
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    Lifet1me iPad Fan

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    Now im so close to the final stettings, yet again in trouble.

    Ive converted a DvD to MP4 640x480 1500kb/s - tooks 2,5 hours
    currently converting DvD to mp4 720x480 2500kb/s - takes about 3,5 hours i think. (remaining time judging)

    NOW they both are mp4.
    IF i set up for 720x640 2500kb/s AND go for h264 it takes about 10 hours!!!! (remaining time says)

    I really wonder what the system is doing taking so much time.
    I guess ill stay with the 720x640 2500kb/s mp4.
  7. NumbLock
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    NumbLock iPad Ninja

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    I still think you're making them way too big. Take a look at the iPad tech specs (copied and pasted from Apple).

    The higher the resolution and the higher the bit rate, the longer it will take. If you like tweak, have fun until you get it just right, then come back and tell us. :D

    Otherwise, just use the same resolution as the input video (max 1280 x 720) and stick with about 1000 - 1500 kbps and I think you'll be happy.

    In any case, I'm sure the whole forum would like to hear if you find the sweet spot.
  8. Lifet1me
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    Lifet1me iPad Fan

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    Planning to test out diffrent convertions with ipad and HDTV connected with AV Component to the IPad. I just cant tell before 28th may+ since there will be no IPad before in Europe.
    I will tell the results then.
  9. lilman
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    lilman iPF Novice

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    That seems kinda slow. Are you using an older computer for conversions? I'm using Wondershare which has support for multiprocessors, and it can convert two 22min episodes from a dvd simultaneously using 640x480 (for 4:3) or 853x480 (for 16:9) h264 2000kbps in under 20mins... and that's on my laptop.

    Why are you using 720x640, your dvd is 720x480 so you are estimating pixels in the height. You don't get better quality when your output resolution is bigger than your input resolution; if anything you're just wasting filespace and potentially increasing processing runtime during video playback.

    Note that above I'm using 853x480 for widescreen movies which seems like I'm estimating pixels. It's kinda tricky to think about, but 720:480 for widescreen movies isn't really 16:9 (720/480 = 1.5, not 1.777), so when I was using 720x480 I was getting black bars at the top and bottom of my output videos. Now that I set it to 853x480 (853/480 = 1.777) I no longer get black bars in the output video. Your processing program may figure this out for itself when converting widescreen movies, but if it doesn't try using the 853x480 setting.
    Last edited: May 18, 2010
  10. Krew
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    Krew iPF Novice

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    One thing I noticed about what you're doing is you've got the aspect ratio of those rendered vids all over the place. If ur converting a NTSC dvd, then it starts out as 720x480 which is an aspect ratio of 1.5 (720/480). When you converted it to 640x480 it changed the aspect ratio to 1.333, a video at 720x640 has a ratio of 1.125. This is probably one of the reasons why its taking so long, because not only is the computer rendering at a new size, but the ratio has been changed.

    I just did a little test and it took a lot longer to render when I changed the aspect ratio from the original video. You might try keeping the ratio the same and render again and see if that helps. I mean, I'm not fully positive but at least from what I tested, keeping the aspect ratio the same made the render a lot faster.
  11. Lifet1me
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    Lifet1me iPad Fan

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    My bad i used 720x480 of course, just wrong typing.

    After all the challenge is (for me) to use a resolution which looks good on the IPad and (once the IPad is connected to the HDTV with AV Cable) looks good on the HDTV.

    I dont mind if the quality isnt perfect, its more the Videosize which im worried about. Seeking one, the one resolution which is good viewable on the IPad and on HDTV once the IPad is connectex to it.
  12. Edlex
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    Edlex iPad Junkie

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    I've been using the universal preset on handbrake and it looks great. The good thing is that it let's me play it on both the iPad and touch. I am looking forward to handbrake creating an iPad preset to see the difference if any.
  13. Finnedog
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    If you get video settings that looks good on the iPad will they transfer to a big HD tv??? The videos I am ripping fill only small area of the screen on my MacBook but look great on the iPad, but I think would be to small to watch on the MacBook! Can you make them bigger on the MacBook?? I guess I was so happy to get it on the iPad I have not played around with the settings on the MacBook.
  14. Lifet1me
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    Lifet1me iPad Fan

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    It wouldnt be a problem if the damn ITunes store would have all DvDs in the store.

    I miss the most movies i got on DvD there, counting Escape from LA, The Crow ans so on. I know they are old, but facing the new technology i would go for Data instead of Disc, selling / dumping the DvDs and buy the Movies at the Appstore, just to bad that the Movie content there is such tiny.

    So much for the spirit.

    I got Mp4 640x480 1500kb/s (thats what the converter programm choses itself as IPad preset)
    Made another Mp4 640x480 with 2500kb/s
    And will do a final mp4 720x480, 2500kb/s

    The Converter i use (Magic DvD Ripper) has a full Screen and a widescreen resolution option in each preset. I used 720x480 for Widescreen and 640x480 for Fillscreen now, this sounds ultimate to me, just hope it works lol.

    I tried 2 times now 720x480 full and wide under a modified AppleTV preset and quicktime diddnt accepted it. It was mp4 and all the same, just 720 instead 640.
    Maybe the AppleTV preset had some hidden stettigs i couldnt see in and simply fucked up the Movie.
    Whatever in about 5 mins i run it under a modified iPad preset and hope it works.
    Last edited: May 19, 2010
  15. eddie
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    eddie iPF Noob

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    Video Converter

    Hey Lifet1me,

    Those conversion times really seem too long!
    Give this converter a try and let me know the equivalent times you get.
    It works much faster for me!
    ipadvideoconverter.mobi

    Eddie




  16. Lifet1me
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    Lifet1me iPad Fan

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    i currently follow the exact stettings of your You can try this except usong Mp4 instead of xvid (which proberly is the same, i dont know)

    Maybe i try pavtube with the stettings you used for DvD to give it a last try, but got small hope since i hit my system and drives with a lot of encoders and stettings days long. Now my system is kinda broken down and im kind of fed up with all the converting which fails.

    Anyway thanks for the hint.

    After all im thinking about selling my DvDs and buy the movies directly from itunes, which doesent look smart, i know, but i dont have to bother about converting. I will buy a Movie from itunes i already got on DvD, then compare the itunes version with the DvD and the Converted file. Then i will decide what im going to do.
    Again i cant try it out before May 28th, the day of the ipad release here in Germany.
    Last edited: May 20, 2010
  17. Lifet1me
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    Lifet1me iPad Fan

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    I got the AV Component cable since yesterday now.
    Load up a movie as mp4 to the IPhone and compared it to the DvD.
    The quality is suprisingly good, the only problem is when the camera scrolls or the movie zooms (camera flys through a corridor for example) it stucks shortly, not a smooth flow.
    I have 2 theorys for this, since the Video diesent stuck when i play it on the IPad.
    1. The IPhone is a bit to weak when connected to the HDTV
    2. Its cause the Movie File is way smaller than the Movie on the DvD and thats just the suffering of quality as the result of making it smaller.

    I recognized that switching the TV Signal in the IPod Options in the IPhone to NTSC makes it better.

    Maybe its getting better witz the IPad, but all in all its a better result as i hoped for.
  18. NumbLock
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    NumbLock iPad Ninja

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    I wrote up a guide (using FormatFactory for Windows (free)) here:
    http://www.ipadforums.net/ipad-help/3780-convert-your-videos-idiot-proof-windows.html


    I think the biggest problem is people tend to over or underconvert with the resolution and bitrate. If your software supports a "use source" or "default" bitrate and resolution, then you should use that for 90% of the videos you get online. I mean, just use the same bitrate and resolution as the source video, EXCEPT if the resolution or bitrate is too high to play on the iPad. That way, if it looks good on the PC, it'll look better on the iPad!
  19. Lifet1me
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    Lifet1me iPad Fan

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    Speaking about a to high bitrate.

    Is it even possible to get a to high bitrate? I always thought the more bitrate the better.... or not?

    Guess ill invest another 4 hours in testing a fewer bitrate. My converter does a hihghest bitrate of 2500kb/s, default was 1500kb/s.
    1000kb/s is marked as very high in the programm.

    EDIT: Forget what i said about, i just switched a few options of my TV, now the stuckings are nearly gone, fair enough.
    Last edited: May 24, 2010
  20. Checkpoint
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    Checkpoint iPad Fan

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    Okay, I've been using Format Factory to convert my movies so they can play on my iPad and I've been setting all of the resolutions for the converted movies to be 1024x768 since I want them to be fullscreen on the iPad... will that be okay to play on the iPad or will it be to big of a resolution or what?

    Thanks in advance.
    Last edited: May 25, 2010

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