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Hi guys, I'm thinking about buying the Samsung Vibrant (That's the US Tmobile version of the Galaxy S for clarification) and I noticed that it can play 720P and it has a WVGA screen. These days, a lot of phones are capable of technically "playing" 720P video but none, even including the almighty retina display, have hd capable screens. But I was just wondering, besides being able to play its own recordings, what is the point of watching HD videos on a screen that really can only play 450P (keeping to true wide screen aspect ratio of course)? It just uses more battery and system resources to decode the higher res video when the end result is identical. Watching 720P on a WVGA screen is tantamount to hooking up a Bluray player to a non-HD screen. What's the point?
And yes, I'm well aware of the phone's DLNA capabilities.
Beats re-encoding right?
I think because the screen is so small and the resolution is high, it gives you the illusion of watching something in HD. If you compare a DVD rip to a 720p video on Galaxy, you'll definitely notice a difference. And the Super AMOLED screen helps too
Yeah, I can see how it's more convenient to just throw it on there raw but it seems like I'd rather take the effort to make it a lower resolution to save space on the phone if it looks the same either way?
And is there really that noticeable of a difference? I'd love it if someone could show a comparison picture between the same scene of a video in 720p and 480p on the galaxy screen to see if it's significant. Also, it might be possible that android is using sub-pixel interpolation to emulate the higher resolution.
Well the screen is a tiny bit wider than the 720 pixels you get from a DVD. Better to downsize than upsize, especially on such a sharp screen! I find that when watching DVD quality videos on a laptop, you notice the artefacts and low quality less than on the phone.
Robin.B said:
Well the screen is a tiny bit wider than the 720 pixels you get from a DVD. Better to downsize than upsize, especially on such a sharp screen! I find that when watching DVD quality videos on a laptop, you notice the artefacts and low quality less than on the phone.
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720p is actually 1280x720 pixels, the phone has 800x480, there should be no difference to your eyes from viewing a high quality 480p video or a 720p.... People are probably comparing a low quality 480p DVDrip with a high quality 720p video, and that's why they are seeing a difference (color quality and sharpness play a big roll here). It makes no sense to watch HD content on the phone, a good 480p will look just as good and will take less processing power...
Thank you!
aeo087 said:
720p is actually 1280x720 pixels, the phone has 800x480, there should be no difference to your eyes from viewing a high quality 480p video or a 720p.... People are probably comparing a low quality 480p DVDrip with a high quality 720p video, and that's why they are seeing a difference (color quality and sharpness play a big roll here). It makes no sense to watch HD content on the phone, a good 480p will look just as good and will take less processing power...
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Click to collapse
That is exactly what I've been saying this entire time! And since true 480p is actually 848 x 480, I've been encoding all my videos to 800 x 450 because my hd2's screen just can't take proper advantage of hd. Somewhat ironic considering its name. It requires less processing power and with good encoding, you lose very little quality compared to the original video. This whole 720P playback seems to be just another marketing ploy like the megapixel battle was. Just another bullet to throw on the spec sheet.
Update: If anyone reading this would like to test the quality difference between video resolutions on their respective HD capable device, here's a great test clip in several resolutions: http://www.bigbuckbunny.org/index.php/download/
Yes, it's ideal to reencode to maximize size usage if you're gonna keep the video on the memory for a period of time.
However, for those HD videos that you've downloaded, and you have no wish to dl a SD version of it just for portable viewing, and it's something that you're gonna watch once and delete, that's where the functionality to view HD media comes in handy.
In short, it's more convenient to have the ability than to do without it.
kenkiller said:
Yes, it's ideal to reencode to maximize size usage if you're gonna keep the video on the memory for a period of time.
However, for those HD videos that you've downloaded, and you have no wish to dl a SD version of it just for portable viewing, and it's something that you're gonna watch once and delete, that's where the functionality to view HD media comes in handy.
In short, it's more convenient to have the ability than to do without it.
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Hmmm good point. I suppose I'll just chalk it up to "convenient but not very practical." Thanks for all the great replies!
Very true and i believe the 720p which actually is for the video output..i just got the Nokia CA75-U cable and the 720p video playback is amazing on big screen TV.
tony800708 said:
Very true and i believe the 720p which actually is for the video output..i just got the Nokia CA75-U cable and the 720p video playback is amazing on big screen TV.
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Click to collapse
That's not 720p, it's standard definition tv.
aeo087 said:
720p is actually 1280x720 pixels, the phone has 800x480, there should be no difference to your eyes from viewing a high quality 480p video or a 720p.... People are probably comparing a low quality 480p DVDrip with a high quality 720p video, and that's why they are seeing a difference (color quality and sharpness play a big roll here). It makes no sense to watch HD content on the phone, a good 480p will look just as good and will take less processing power...
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Yes, but I meant DVD resolution which has 720 pixels in width.
Besides, my entire collection is in 720p HD.. So when I'm going out and want a movie/series with me for boring times when travelling, it's nice to not have to convert them/re-download a lesser quality rip.
I also think I see a difference, tested with a SD-rip of Top Gear vs HD-rip of it. But might just be in my mind Seems sharper though.
You kow, videos encodings are at different resolutions for luminance and chrominance data.
Color data is often half or quarter the resolution of the actual video resolution.
A properly encoded 1280x720 video will look better than the same encoded at 840x480.
Considering the processing power, when video decoding and scaling are done by hardware, power consumption will be almost identical.
tundra84 said:
Hmmm good point. I suppose I'll just chalk it up to "convenient but not very practical." Thanks for all the great replies!
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Not practical only for you maybe, but different people have different needs. Don't assume that you can decide for the whole world.
Hello all ,
I've got a Note for a week now and altough it's an amoled screen , i've tried every kind of video from avi to mkv ( 720 p quality ) and even reencoded files to mp4 or h264. But black aren't deep black and more dark grey , sometimes even pixelated ( blocks ). I even got the impression that this was also sometimes the case with some games ( for instance the opening sequence in Asphalt 6 HD ).
Is this normal with Samsung devices and is there a way to improve this.
Thanks
SEE?
Gnote has same specs as the galaxy s2!
just 200 more hz on CPU.
Should play all those files man!
if no worky on note byt works on SGS2 then u have somekinda fail version manufacture thing!
try getting it replaced if it does not play avi or any files!!
it really should work! try some file on sgs2 if its ok there then u phone deff a bad batch!
get it replaced! u have good Reasons to get it fixed?
helped?
He didn't say anything about the files not running, he mentioned a complaint about graphics performance due to non-AMOLED-style deep blacks.
Ffs...
Thanks
Hello ,
I probably didn't express myself completly correctly.
The Note can play al those video file and even mkv without any lag , the problem consist in the fact that the blacks in the video are not realy black but more greish , like if the contrast was not calibrated right.I even got blocks in the black part of the video.I don't have that problem with photos.
It's also like there is oversaturation , i have tried the stock video player , act video and mx player , all give me the same result.
BerreZ said:
Hello ,
I probably didn't express myself completly correctly.
The Note can play al those video file and even mkv without any lag , the problem consist in the fact that the blacks in the video are not realy black but more greish , like if the contrast was not calibrated right.I even got blocks in the black part of the video.I don't have that problem with photos.
It's also like there is oversaturation , i have tried the stock video player , act video and mx player , all give me the same result.
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Click to collapse
It looks to me like its video quality issue. If you run video provided by samsung "lightness & slimmess", you can check whether black colour is properly displayed (skip to 0:55 for the best result).
Thanks
I have done what you said and the black of this video are completely black.
This is a 1080p hd video.Does that mean that only hd videos work propely, I hope not.
The video with the problems could be played flawless on my Htc Sensation or on my Asus Eee pad transformer both with a slower processor.
Sounds like the OP's video bitrates are too low, since he is describing black crush. Higher bitrate videos do not exhibit those problems.
Thanks
This is propably the reason , but what do you mean by "OP's" .
Thanks
OP = Original Poster.
Sent from my GT-N7000 using xda premium
Niuseek said:
It looks to me like its video quality issue. If you run video provided by samsung "lightness & slimmess", you can check whether black colour is properly displayed (skip to 0:55 for the best result).
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Click to collapse
Here endeth the lesson!
Mine does this too. the samsung video plays fine but most other blacks are purplish and blocky. This happened in the green lantern film downloaded from the market, the first part of it is very dark and was unwatchable. It happens to a lesser extent in 1080p trailers downloaded from the net. When I use a black screen for my lockscreen it is the same. Even the starry background during the orbiting planet part in quadrant benchmark is a blocky purple mess. It is not even constant. Occasionally it seems OK. I am going to send mine back.
seepage said:
Mine does this too. the samsung video plays fine but most other blacks are purplish and blocky. This happened in the green lantern film downloaded from the market, the first part of it is very dark and was unwatchable. It happens to a lesser extent in 1080p trailers downloaded from the net. When I use a black screen for my lockscreen it is the same. Even the starry background during the orbiting planet part in quadrant benchmark is a blocky purple mess. It is not even constant. Occasionally it seems OK. I am going to send mine back.
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If the Samsung video plays fine, and other videos play fine, like MKV's in Diceplayer then it must be the videos you are looking at.
Good luck finding a device that plays back crap videos in perfect quality.
If you do find a device that makes these videos look good, I would question the bit depth of that device.
What is the point in getting a device with a HD screen and watching videos in sd or HD with low bitrate? It's like trying to watch VHS videos on a LED.. yes it will be pixelated. I suggest watching higher quality videos. Either MKV or xH264 mp4 with larger file size and bitrates of at least over 3mbps.
I think this whole issue can be explained by the technology in place here.
Super AMOLED does not light up black pixels at all, so when slightly gray/dark gray colors appear in the black, they tend to stand out much more than they do on different screen technologies.
Solution: higher bitrate videos, and/or deal with it
i have been doing some testing and i know exactly what the op is talking about as I'm suffering the same issue. i have a galaxy s2 and the note side by side, with the same video and the s2 renders correctly but the note is blocky and not rendered right.
I'll post a side by side photo when i get home tonight, but there is definitely a problem.even using high bitrate videos. i tried to even the playing field eg set brightness to max, adjusting the colour to normal, warm or even cool but it does NOT render correctly. it almost looks like the old days of 16 bit vs 32 bit colour on a pc. side by side with my s2 and s1 it is very obvious.
YUP. Am observing this too.
The initial Galaxy S (first) had a pentile matrix screen too so it would be useful to compare a video exhibiting the blockiness on a Galaxy S side by side with the Note.
It definitely does seem like it is rendering at 16bit, sometimes even 8bit.
Also I have observed this in the general OS too i.e Icons, pictures etc...
Am note sure what to think...
I am wondering whether Sammy reduced the bit depth throughout the OS to keep the frame rate as high as possible due to the higher resolution of the screen...?
---------- Post added at 12:27 AM ---------- Previous post was at 12:26 AM ----------
ballfire said:
i have been doing some testing and i know exactly what the op is talking about as I'm suffering the same issue. i have a galaxy s2 and the note side by side, with the same video and the s2 renders correctly but the note is blocky and not rendered right.
I'll post a side by side photo when i get home tonight, but there is definitely a problem.even using high bitrate videos. i tried to even the playing field eg set brightness to max, adjusting the colour to normal, warm or even cool but it does NOT render correctly. it almost looks like the old days of 16 bit vs 32 bit colour on a pc. side by side with my s2 and s1 it is very obvious.
Click to expand...
Click to collapse
Oh wait - you tested the Galaxy s1 as well which has a pentile matrix AMOLED and your test video rendered correctly???
yeah the s1 renders correctly. i tried do a screen capture of the video on my phone but it didn't seem that you can't do a screen capture of video running i tried the default video player, mobo player and mx player. none render correctly nor can do screen capture of the video still
I'm curious to know what he means by 'rendered correctly' on the S1. I think its more likely that the S1 resolution just isn't good enough to expose the weaknesses in the video encoding - the Note has nearly three times as many pixels as the S1 and the screen size is considerably larger so the 'faults' being described here are IMO the screen being good enough to expose weak video. Like someone mentioned earlier, it like watching an SD video in a lossy format on an SDTV and then an HDTV...
BerreZ said:
Hello all ,
I've got a Note for a week now and altough it's an amoled screen , i've tried every kind of video from avi to mkv ( 720 p quality ) and even reencoded files to mp4 or h264. But black aren't deep black and more dark grey , sometimes even pixelated ( blocks ). I even got the impression that this was also sometimes the case with some games ( for instance the opening sequence in Asphalt 6 HD ).
Is this normal with Samsung devices and is there a way to improve this.
Thanks
Click to expand...
Click to collapse
You are describing video with "bad" gamma. It is not the screen or the device it is your source material.
The "blocks" you see are compression artifacts. Most video you will get that is compressed will have this effect. If the demo video doesn't show these artifacts then it can't be the device. That of course doesn't rule out a dodgy video player app included with the device. Maybe that is sub par and has crappy coding of the codecs and makes bad video worse?
The reason you see them better on the note is because OLED screens will show shadow detail very well. A few stages above pure black will show up. Videos these days are calibrated, made and tweaked to look good on an LCD as it is the dominant tech and that is what the video makers are looking at while they adjust their settings. This means that colors and black levels adjusted to look good on an LCD may look like crap on an OLED.
On LCDs the backlight haze will often wash out these shadow details and crush the blacks so you won't see these artifacts as much.
You problem is that your screen is TOO good!
There lies a fault with the video player. There should be a gamma adjustment to be able to pull these "grays" closer to black.
NZtechfreak said:
I'm curious to know what he means by 'rendered correctly' on the S1. I think its more likely that the S1 resolution just isn't good enough to expose the weaknesses in the video encoding - the Note has nearly three times as many pixels as the S1 and the screen size is considerably larger so the 'faults' being described here are IMO the screen being good enough to expose weak video. Like someone mentioned earlier, it like watching an SD video in a lossy format on an SDTV and then an HDTV...
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Click to collapse
what i mean is, i have the note, s2 and a s1.
lined up side by side playing the same video, the note's video in some parts is grainy, blocky, pixelated, the colors not correct compared to the s1, s2.
and this is with screen brightness set on max on all phones, display all set to standard, using the default samsung video player. but it makes not difference if you use moboplayer, mx player it is still bad.
like i said i'll post a picture when i get home later. i'm hoping it is a fixable with a software upgrade as i watch a lot of shows on my phone and so far i'm not impressed with what i'm seeing. even using 4gig 720p videos.
i've checked the video on my monitor and the video is perfect so it is just not getting rendered correctly on screen.
i hooked up the note using my s2 samsung mhl cable and in the lounge the video on the 55in 1080p tv is obviously inferior to the s2
According to this:
http://hispeedcams.com/lenovo-zuk-z2-pro-will-have-960fps-video-confirmed/
ZUK Z2 Pro should be capable of recording video at 960 FPS.
It is probably achieved through interpolation or something, or not at all (see Mediatek and their "[email protected] FPS").
Anyway, when you guys get hands on ZUK Z2 Pro, share your impressions and what the camera is really capable of.
andriman said:
According to this:
http://hispeedcams.com/lenovo-zuk-z2-pro-will-have-960fps-video-confirmed/
ZUK Z2 Pro should be capable of recording video at 960 FPS.
It is probably achieved through interpolation or something, or not at all (see Mediatek and their "[email protected] FPS").
Anyway, when you guys get hands on ZUK Z2 Pro, share your impressions and what the camera is really capable of.
Click to expand...
Click to collapse
Yeah it is on official site, there is 960 fps but unfortunately resolution is not mentioned.
Something is written in chinese forum that 960fps is not supported yet because there is no ZUI 2.0 yet.
So we will have to wait a little for a review.
hello everybody, as a student very intersted i made a little calcul. The snapdragon 820 is able to encode 4k video at 30fps, ie 8.29 Mega pixel at 30fps. So the sd 820 encode 248 Mpixels per seconds. So at 960fps, it means that you get about an image of 0.25 Mpixel,which is roughly a 480*640 pic. Not bad. However if some Mediatek CPU encode at 1080p 480 fps, and if the sd820 is considered better, then he can encode more than 2.09*480 Mpixel per seconds, which match 720p at 960fps. hoping for some other resolution/fps solutions from ZUI 2.0. But if there is no breaktrough for the camera then 960fps is impossible to reach( this far this speed is only achieved by pro cameras which cost thousands), meaning it's a false rumor launch by zuk for marketing aims. Wait for the reviews is my last advice. tchao
SD 801 was capable of [email protected] FPS already (h264).
SD820 is capable of 28 MPx/s (4K is 8MPx) , so theoretically, it is capable of much more than just what you mentioned. [email protected] FPS is only HEVC bottleneck.
https://www.qualcomm.com/media/documents/files/snapdragon-820-processor-product-brief.pdf
MTK claimed their SoC is capable of [email protected] with the use of a Sony's sensor which didn't even have that capability in it's datasheet.
And honestly, it's been a long time since they announced that and have you seen it ever come true?
The only mobile camera sensor capable of very high FPS up to this moment was Toshiba's T4K82 with [email protected] FPS, [email protected] fps and [email protected]
http://www.androidauthority.com/toshiba-240fps-t4k82-sensor-596203/&ved=0ahUKEwjDx_zy4f3MAhUFORQKHXP1BisQFggcMAA&usg=AFQjCNHi7pL_vdS6wb7F9fnUwtST4ip4IA&sig2=nTEBpX31ZuZS2WzWgj5VAQ
But it never appeared in a phone (or any device really), guess it was not as good as they claimed it to be...
OmniVision's OV13870 is capable of up to [email protected] through cropping and binning. However I have a feeling that they are actually the only one to be honest and admit it is not REAL 1080p. Because every slow-motion recorded with a phone I saw was like of a lower resolution then the file captained to be of. (720p looked like 360p, etc)
In my opinion, 960 FPS video recording is not possible with the mobile camera sensors which are currently at the market... Besides, iPhone always seems to come first with better slow-motion (they introduced 240FPS with a Sony sensor and nobody was able to compete woth that for more than half a year). They haven't even introduced 480FPS yet and somebody claims to have achieved 960 fps? I consoder that highly unlikely.
That is why I am looking for what comes out of ZUK Z2... If it really is a 'scam', then I say that they (ZUK and Lenovo) need to be punished...
Even if they come up with something ugly like frame interpolation.
First samples regarding the slow-motion video recording:
http://www.gizchina.com/2016/06/08/weekend-zuk-z2-pro/
So now it is confirmed - it does not record at 960 FPS. It does not even record at 240 FPS.
It records at only 120 FPS ! 720p is the resolution.. but honestly, it does not even look like 720p... more like 576p.
And the player allows you to set the playback speed... so for 960 FPS they basically play one frame 8 times....
Pretty disappointing...
Ok maybe a little dramatic but still - a little disappointing.
I have done a few tests. Played the exact same HDR YouTube videos at the exact same time with my Mate 9 and Mate 10 one above the other in landscape mode. The Mate 9 is MUCH brighter than the Mate 10 on maximum brightness. I have factored turning off auto brightness and turned off Smart resolution etc etc. They also have different colour temperatures even if you set them both to warm, default or cold - they still look different.
I have tried HDR videos on both phones and I see absolutely no difference. I studied the colours so hard. I see absolutely no difference between a 1440p video and a 1080p video playing at the same time. In fact, most times the Mate 9 looks sharper and more vibrant. Also shockingly the Mate 9 offered for example 1080p 60fps option on a video whereas the Mate 10 offered maximum 720p 60fps on the same video. 1080p was nowhere in the list. What the hec! Battery at 100% so no resolution switching to save power.
Basically, it is true 1440p is wasted on a phone. There is no difference on a small screen such as a phone. All these people saying "yeah but X phone only has a 1080p screen" don't realise that it doesn't really matter. It all looks the same.
So I hear the Mate 10 is HDR 10 compatible and yet I don't see it with my eyes. If I am doing something wrong and someone wants to correct me, please DO. I want to be wrong.
What are your tests and opinions?
Despite all this, I still love the phone. ?
I take it all back.
I have discovered YouTube does not show HDR10 output even if the video says so.
ONLY the built in video player supports true HDR10 content.
I downloaded these HDR sample videos from an XDA post:
https://mega.nz/#F!jYwlgbBA!piXwD8sYa7zjsRtjStuAyw
Play them in the default video player and they look stunning. I took a screenshot of a paused video and when opened up in gallery, the colours were bland compared to the actual playing footage. Proof enough.
Phew! This phone is amazing!
Do you get higher peak brightness when in vivid mode ?
AFAIK - Currently Netflix is the only third party app supporting HDR 10 for this phone
Youtube coming soon though,
So, you might want to change your thread title, LoL
tboy2000 said:
I take it all back.
I have discovered YouTube does not show HDR10 output even if the video says so.
ONLY the built in video player supports true HDR10 content.
I downloaded these HDR sample videos from an XDA post:
https://mega.nz/#F!jYwlgbBA!piXwD8sYa7zjsRtjStuAyw
Play them in the default video player and they look stunning. I took a screenshot of a paused video and when opened up in gallery, the colours were bland compared to the actual playing footage. Proof enough.
Phew! This phone is amazing!
Click to expand...
Click to collapse
i try the videos there,look extremely amazing with very excellent vivid colors
tboy2000 said:
Ok maybe a little dramatic but still - a little disappointing.
I have done a few tests. Played the exact same HDR YouTube videos at the exact same time with my Mate 9 and Mate 10 one above the other in landscape mode. The Mate 9 is MUCH brighter than the Mate 10 on maximum brightness. I have factored turning off auto brightness and turned off Smart resolution etc etc. They also have different colour temperatures even if you set them both to warm, default or cold - they still look different.
I have tried HDR videos on both phones and I see absolutely no difference. I studied the colours so hard. I see absolutely no difference between a 1440p video and a 1080p video playing at the same time. In fact, most times the Mate 9 looks sharper and more vibrant. Also shockingly the Mate 9 offered for example 1080p 60fps option on a video whereas the Mate 10 offered maximum 720p 60fps on the same video. 1080p was nowhere in the list. What the hec! Battery at 100% so no resolution switching to save power.
Basically, it is true 1440p is wasted on a phone. There is no difference on a small screen such as a phone. All these people saying "yeah but X phone only has a 1080p screen" don't realise that it doesn't really matter. It all looks the same.
So I hear the Mate 10 is HDR 10 compatible and yet I don't see it with my eyes. If I am doing something wrong and someone wants to correct me, please DO. I want to be wrong.
What are your tests and opinions?
Despite all this, I still love the phone.
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Click to collapse
Of course it's the same because mate 10 comes preset to 1080p lol. And stop listening to tech reviewers the are dumb, only way to see it 1080p and 2k is to use magnifying object like camera or glass etc. I have iPhone 7 plus, LG G6, Moto Z play, Essential phone and the s8 which I sold because of burn in, I don't see the dots pixel on any off them because I don't look for it, they all looks the same some are brighter and vibrant than others. That's it.
Another thing, the max brightness on auto is superior than the manual max brightness. That happen on a bunch of smartphones.
So, it's dumb to compare max brightness with the auto setting turned off.
The best way to compare it, is going outdoor with the auto checked on both and look which one seems brighter.
Sent from my LG-H990 using Tapatalk
I am using this phone for four days model cor l29 updated to latest version, and screen quality is just ok i have set it to FHD but only while playing youtube videos, videos look much softer even on 720p and 1080p they dont look sharp. Persons face look even softer just like beauty mode does on camera and on 480p videos look blurry. I used htc 10 before i always watched videos on 480p they were perfevt. Is this some kind of setting or due to the fact that it has 6.3 inch screen and only 409ppi because htc 10 had qhd screen and 500+ppi. Thanks in advance.