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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

"new Ipad" (3) , how do I get highest quality demo video on it ?

Justin O'Neill said:
I've never been able to sync high quality video through iTunes so I've always used other programs to get the files on there. Goodreader is cool because you can connect right to your DroBox and download from there. You can also download from the FTP servers, the web, etc.
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I see. iTunes verifies that the resolution of the video is 1920x1080 or less. If it's more, it won't sync with the device (iPhone 4S, iPad 2 and the new iPad). While the actual device also verifies that also, it's much less picky about what it'll play. So, if you have some above-spec files that you want to play, it's necessary to bypass iTunes.
 
Tom Lowe said:
I seriously doubt that iTunes will support 2048 any time soon.
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By the way, iTunes actually supports 2K files. iTunes uses the QuickTime decoder to play videos, so there's no limit in terms of resolution other than the limit of the hardware for playback. (I'm guessing you meant that you doubt iTunes will sync 2K video with iOS devices?)


Tom Lowe said:
I am hoping that Samsung will release a 2560 tablet soon, which would be breathtaking with 2560 videos.
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2560p playback would require a file encoded in H.264 level 5, minimum. At the moment, there's no mobile SoC that supports that level of H.264 decoding. The soonest that anyone will release a tablet capable of playing a video like that will be in either December when Tegra Wayne is released or 2013 when Tegra Grey arrives.
 
After taking a look at Justins file I have a 2k version of Tom's trailer at 50 megabit up and running with sound on the iPad 3 in CineXPlayer. It looks good but the reason it works is I'm using plain Mpeg4 in Handbrake, not h.264. It works, sure, but I don't think the quality difference is worth it. It's basically super high bitrate Divx at 2048 vs h.264 (x.264/mpeg4 part 10/mpeg4 AVC) at 1920. h.264 just looks better, especially in motion.

Hope this helps,

Bill
 
BillBarnes said:
After taking a look at Justins file I have a 2k version of Tom's trailer at 50 megabit up and running with sound on the iPad 3 in CineXPlayer. It looks good but the reason it works is I'm using plain Mpeg4 in Handbrake, not h.264. It works, sure, but I don't think the quality difference is worth it. It's basically super high bitrate Divx at 2048 vs h.264 (x.264/mpeg4 part 10/mpeg4 AVC) at 1920. h.264 just looks better, especially in motion.

Hope this helps,

Bill
Click to expand...

Are you able to verify that the 2560p file will not play on the new iPad?
 
2.5k is a corrupted mess, but it does TRY to play it. 2/3rds of the screen is green while 1/3 is just a bunch of random macro blocks.

I'll mess with 2.5k a bit more since I was hoping 4k mpeg4 would work and the oversampling would make up for the lower quality.
 
BillBarnes said:
2.5k is a corrupted mess, but it does TRY to play it. 2/3rds of the screen is green while 1/3 is just a bunch of random macro blocks.

I'll mess with 2.5k a bit more since I was hoping 4k mpeg4 would work and the oversampling would make up for the lower quality.
Click to expand...

If you're able to get even a single frame of the 2.5K file to appear and/or play, it would mean that the hardware in the new iPad is capable of H.264 level 5 decoding. Which, would mean that 3672x1536 at 24 fps playback should also be supported.
 
Looks good. It's Mpeg4 though, not Mpeg4 Part 10, aka h.264. I also felt like a huge nerd typing that, lol.
 
Brian Iannone said:
I see. There's a timecode break in the file (which isn't all that bad), but the audio track is about 18 frames off from the video track. Try opening the file in QuickTime 7 and saving it (not export, but just a File > Save As...) and you'll see what I mean.

Just thought I'd let you know. :-) I've found that that's sometimes a common issue with MP4 containers.




That is very, very interesting! I see you played the file in GoodReader. How did you get the video on the device? (Did you sync through iTunes?)




Are you sure you meant level 5.1 and not 4.1? Specification-wise, that's unsupported and therefore officially impossible (not to say that it isn't possible in reality). If the iPad does support level 5.1, that could be interesting... ;-) (It would allow for 4K playback.)

If you did indeed mean level 5.1, what profile were you using? Also, are you using an iPad 2 or the new iPad?

Also, are you using the QuickTime exporter in AME or Adobe's H.264 encoder?
Click to expand...

it's adobe's h.264 encoder, 3rd gen ipad, using avplayerhd to playback that file i made. looks great. plays great. I didn't run the file through itunes. the max supported resolution built into the ipad right now is 1080p, i've tried playing back the 2k file and it doesn't work. so IOS itself needs to update to be able to support he full resolution the retina display can provide. even so. having super high quality 1080p on this is mind blowing. something where you can show off your work in a mobile fashion and know it will look good when you show somebody is a huge relief.
 
iPad3 video test - full 2024

iPad3 video test - full 2024

Justin, I played your 2028x1078 without using Goodreader just straight from DropBox and it has all the pixels and plays very smooth.

I don’t know what DropBox is using to play the videos but whatever is using is perfect.
You just have to go to DropBox setting and check the checkbox to “play videos in original quality”

I also downloaded the shorter version of your test file, the one with lines over imposed that Les created and
...........all the lines are preserved!!.
I had to use magnifying glass to see if all pixels are there.

Your first file the one that is 2048 x 1536 is very poor quality and is playing slow and propellers have jagged lines like you see when you play interlaced video.

No jagged lines on the other videos at all, examined with the magnifying glass.

Now let’s see what 2560p TimeScape will do……
 
Andrew M. said:
Your first file the one that is 2048 x 1536 is very poor quality and is playing slow and propellers have jagged lines like you see when you play interlaced video.
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Yeah, in order to get it to play smoothly with 1536 vertical resolution I had to render it at 0% quality haha!
 
Andrew M. said:
BTW Justin, how are you getting these links to your files that you are posting here?
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Command click on the file in the Dropbox folder and then select the dropbox menu and copy public link. The file has to be in your "public" folder.
 
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