Hello guys I've been converting my videos to 800x480 for awhile and their all fine. I was wondering if I convert them to 1920x1080 would there be a significant difference since the SGSII's native resolution is 800x480. Thanks for answering my question. Oh yeah the resolution the videos come in are usually low quality like 704x400 usually in .rmvb format. Sometimes I do download 720p videos and convert them to 800x480.
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I've been converting mine as well, no difference at all. I just maintain the bitrate and it also reduces the file size.
GS II's screen resolution is 480x800. So anything above that resolution is practically meaningless, let alone 720P or 1080P.
Regards.
I can argue about that.
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couldnt resist
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So the nexus one now shoots in 720p. I wad wondering if we could also improve the quality of the camcorder in our phones. I know we aren't as capable as the nexus one, but could we at least shoot videos in the phones native resolution?
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Uh, wow, my first post after lurking for awhile.
The phone's native resolution is 320x480, so the phone technically is capturing its native resolution, even if it is a little smaller.
What I really want, is a way to improve the sound quality. It records to AMR which is the worst format in the world for a video recorder to use. I honestly think it could have much better sound, if it didn't use such an awful codec.
So if the Vibrant is only 800X480, why does a 720p movie look better than a 480 movie, it seems like the max is 480..... Also, if the Iphone 4 has 960x640, even though it looks amazing, way better than any android, it isnt actually playing a 720p video in full either is it? yes i realize how stupid that question seems to many of you. I couldnt figure out how to search google for the question. So enlighten me if you can. After you give me crap for not searching of course...thanks
DMaverick50 said:
So if the Vibrant is only 800X480, why does a 720p movie look better than a 480 movie, it seems like the max is 480..... Also, if the Iphone 4 has 960x640, even though it looks amazing, way better than any android, it isnt actually playing a 720p video in full either is it? yes i realize how stupid that question seems to many of you. I couldnt figure out how to search google for the question. So enlighten me if you can. After you give me crap for not searching of course...thanks
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What is the resolution of the movie you are comparing it to? What is the format of the movie? How was it compressed? All of this and more affects the resolution of the video. If you have a 720p movie, it my be down-converted to 480 on playback, but because it was compressed at a higher quality (and maybe in a less lossy format), it's going to look better than a movie compressed in standard-definition (and more than likely at lower data rates).
because 720 is bigger than 480, the image size is bigger and usually has a higher bitrate too than a regular 480 video, so if 720 is played on anything smaller than a 720display, it gets resized (downsized) to fit the screen (without any quality loss), in this case a 480 screen. So all those pixels on the 720 video get pushed closer together thus showing more detail on the 480 screen.
a 480 video usually looks just fine on a 480 display, but since a 720 video is bigger and was meant for higher resolution screens, it has a higher bitrate which makes it store more detail than a 480 video, that's why it looks better
thanks for the replies, that makes perfect sense. if its 720 pixels i didnt understand how they could all be on a screen capable of only 480 but i guess compressing the video maintains the quality.
And to answer the questions, i just dl a movie, and drag and drop to my vibrant through doubletwist which takes care of the conversion. Although ive noticed none of the videos i download look nearly as good as default Avatar. I dl 1080/720 movies and they always have the very pronounced, large pixels when there is action and bright colors. But Avatar looks great so i guess maybe i could use something other than doubletwist and get a better quality conversion? Because the Vibrant is clearly capable of displaying fast action and huge varieties of colors like in Avatar
That said im ready for HTC/Moto/Samsung to start popping out some high res displays to rival the I4. The Vibrant has a nice screen but put it next to the damn I4 and it looks downright dull. I guess that tiny 3.5" screen next to the Vibrant's perfectly sized 4" display benefits the I4 visually as well...
DMaverick50 said:
thanks for the replies, that makes perfect sense. if its 720 pixels i didnt understand how they could all be on a screen capable of only 480 but i guess compressing the video maintains the quality.
And to answer the questions, i just dl a movie, and drag and drop to my vibrant through doubletwist which takes care of the conversion. Although ive noticed none of the videos i download look nearly as good as default Avatar. I dl 1080/720 movies and they always have the very pronounced, large pixels when there is action and bright colors. But Avatar looks great so i guess maybe i could use something other than doubletwist and get a better quality conversion? Because the Vibrant is clearly capable of displaying fast action and huge varieties of colors like in Avatar
That said im ready for HTC/Moto/Samsung to start popping out some high res displays to rival the I4. The Vibrant has a nice screen but put it next to the damn I4 and it looks downright dull. I guess that tiny 3.5" screen next to the Vibrant's perfectly sized 4" display benefits the I4 visually as well...
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don't use doubletwist to put videos on your phone if they are already compatible with the vibrant, like a 720 video, vibrant can handle that..and all I explained was about the vibrant playing back the 720 video without conversion (just dragging and dropping the 720 video to the phone)
you have been playing the wrong movies or using the wrong convesion settings cause my movies look amazing, up to par and sometimes even better than the iphone 4. Have a look at one of my threads and download the video i uploaded (just drag and drop to phone don't use doubletwist or any other conversion method) and you will see what the vibrant screen is capable of.
thread: http://forum.xda-developers.com/showthread.php?t=780155
Thanks. Avatar looks great so I realize movies can look amazing, like you said I'm just doing something wrong. Ill check your link, thanks again
Just wondering...else I have to convert to 480p
Yes it supports 720p (and 1080p) movies.
you guys have to always remember that what it supports and what it can do flawlessly are two separate things....
720p videos films are playable but not the smoothest.
actually,For me,720p and 1080p vids played quite smoothly (maybe a tad slower than my iphone4 but nothing notable really)
Interesting, I didn't even try 720p. Good to know it works, but really it generally would be worth your time to convert. Huge waste of space if you don't plan on deleting it right after viewing.
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link68759 said:
Interesting, I didn't even try 720p. Good to know it works, but really it generally would be worth your time to convert. Huge waste of space if you don't plan on deleting it right after viewing.
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Yup I had to convert a 2.5 gb vid from avi to mp4 and it was about 3.7gb
VeryCoolAlan said:
Yup I had to convert a 2.5 gb vid from avi to mp4 and it was about 3.7gb
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I assume you used Zune to convert it, if the end file ended up being bigger than the original.
A properly transcoded video would be significantly smaller: a 720p video has 921600 pixels per frame, as opposed to the resolution of our Titans; 480x800. A wvga video only needs 384000 pixels per frame. Therefore a 720p video is roughly 2.4x larger than it needs to be as our screens cannot display pixels it doesn't have (and that's not even taking bit rate into account). The quality will actually be slightly worse on a 720p video because it will have to be scaled down to play on the screen, whereas a properly transcoded video would be 1:1 with the pixels on the screen.
I mentioned bit rate; I don't really know what a good marker for bit rate is, but when transcoding to a smaller resolution, you don't want to keep the original bit rate: that has to go down too. Bit rate plays into file size significantly, so in reality any 720p video is much more than 2.4x bigger than it needs to be.
I guess one of these days I'll play around with a transcoder and make a thread about how to properly convert a video for WP7.
what is maximum output resolution over HDMI out? it is the same like screen resolution 720 x 1280 with optional upscale to 1080p?
i will connect it to 1080p PC monitor, so i'm wondering about resolution, and picture sharpness
I can't find anything that says exactly what it is, but I'm pretty sure it's whatever resolution the phone is (for the Samsung Galaxy S3 that would be 1280x720). Hope that helps.
P.S. This should be in the Q&A section, not the General section.
If the video you are playing on the S3 is a 1080p video, even though on phone it will be rendered at 720p it will display on the external display at Full HD (1080p).
Same with the videos recorded on the phone. They render on screen at 720p but on external display via the cable will be at 1080p
1080p
Over 9000.
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Hi all
What is the general consensus for the best resolution for playing movies on the tablet considering the screen it comes with?
I am heading overseas shortly and so wanted to look at whether I convert some of my large movies to a smaller filesize and if I do what resolution is ideal.
That of course could lead on to the app people use for said conversion (but that is very subjective to each individual).
Cheers
Well since our screen supports 1080P i would say that is also the ideal resolution now I don't think that your movies are any higher resolution than that so it is also very subjective what resolution is 'optimal' it will always be a tradeoff between quality and filesize, personally I don't really see that much difference between 1080 and 720. With 480p I do really see a difference. But I would say that is sufficient for your trip.
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The ideal format for the XPERIA Tablet Z (and well any other modern tablet) is h.264 .mp4 AVC. The tablet's screen is WUXGA (1920x1200), so itnis perfect for 1080p. Sony's official whitepaper states the device supports up to 20Mbps, somI recommend encoding your video to that bit rate for maximum quality. A bit rate of 15Mbps is also a good compromise if you still want high quality, while 11.5Mbps is still ideal. 7.5Mbps 720p is also suitable if you dont mind sacrificing some quality.
I have an eye for low quality, but if you are dealing with feature length live action movies here, handbraking them to 10Mbps h264 1070p should do.
I myself use 15Mbps. I can provide a screencap of a 15Mbps video on the tablet if you want one.