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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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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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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.
I was wondering if we could get 640x360 at 120fps video recording without audio on the phone as 1280x720 at 30fps is already there.
So if the phone can process 720p at 30fps then it should also do 640x360 at 120fps or even 320x180 at 240fps(for ultra-slow motion).
If this is possible then we can reduce the video playback framerate to 30fps(on computer or on the phone itself if it is possible) and the video would be in slow motion.
I read that by editing the media_profiles.xml we can tinker with video recording settings, i think it is available on froyo only.
So can the leaked builds for SGS can they be used?
I would be getting the SGS on my birthday so can't try it myself.
Till then i am gathering information on mods that can be done to enhance the android experience.
Thanks in advance.
Regards,
Utkarsh
I would love this. My girlfriend can do it with her Samsung Wave, too. I'm so jealous
I found the topic in another sub-forum before, but there doesn't seem to be much interest in this.
http://forum.xda-developers.com/showthread.php?t=726111
Bump
Would love this feature too
Im not sure if you can just decrease the pixel and so increase your frames per sec
I think this depends on the camera....
Because if you think backwards... you have 640p at 30fps, and you would turn it in 15fps, the resolution increases ? No, i think the Wave camera simply has this feature to film 120fps....
But please tell me im wrong, because i would also love it !!
I think its true that the camera must support this feature. But it's also about the throughput of data which has a certain maximum. That's why the resolution is reduced a factor 2, and enabling a frame rate of 120 fps, without exceeding the maximum data throughput.
But I also think that if it's possible on a Wave, it must be possible on a Galaxy S. I'm rather convinced they use the same camera, judging from the samples recordings made with both phones.
So hopefully, somebody can jump into this. Or give a real explanation how this slo-mo recodind works.
(Is it really a high shutter speed, and do you need a very highly illuminated object, or do they make use of some interpolation technique?)
Can anybody try!!!!
Can anybody running leaked froyo on SGS try this by editing the media_profiles.xml
i guess it might work as cyanogen mod 6 enabled 720p on the nexus one.
By editing the media_profiles.xml we might get 120fps video which can be slowed on computer(by reducing the video playback to 30fps).
Technically speaking i think it is possible if the camera is not causing a bottleneck, because the data rate at which 720p is encoded is enough for 640x360 at 120fps if we do the math.
So please it is my ernst request to all the pro-mods to try this.
Any news on this matter??
it occured to me that we could extract the cammera app from a samsung wave and translate the slo-motion feature to our i9000... any hint on how to do this??
Months old topic but... BUMP!
Really not fare that WAVE can do it but i9000 cant
What a great idea - although I suspect if it could be done, it would have been already....
Fingers crossed though
Question guys - to enable you to slow certain scenes in a video you need to select the slow motion video scene...fair enough.
Should this in turn reduce the quality of the video?
I could be wrong, but before I went to a custom ROM, I am fairly sure the video quality remained the same as normal. Now as soon as I record in slow motion, it reduces the quality.
bleary said:
Question guys - to enable you to slow certain scenes in a video you need to select the slow motion video scene...fair enough.
Should this in turn reduce the quality of the video?
I could be wrong, but before I went to a custom ROM, I am fairly sure the video quality remained the same as normal. Now as soon as I record in slow motion, it reduces the quality.
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hello there
yes it will reduce the quality ...
best regards
I noticed that too with mine. Horrible isn't it? You also get reduced quality with 60fps. You get verticals lines. I gave up and stuck to 30fps.
mwatson said:
I noticed that too with mine. Horrible isn't it? You also get reduced quality with 60fps. You get verticals lines. I gave up and stuck to 30fps.
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I also have this problem vertical line appear in indoor environment. However, customer service told me this will be fix in next update.
Slow Motion = Low Resolution
I saw that HTC video doing a slow motion video of a man doing fire/flame stunt. Actually I was amazed and got excited that I wanted to try that Slow motion on my own with something else like a sprinkler maybe.
So I found one at a park and as soon as I started shooting the video (slow motion video under video settings) WTH!!!! The resolution dropped to something like 768x432 and its a bite pixellated, not true HD (1080p) which I thought I'd expect just like from the HTC video... Yes you can trim/edit the video that's cool but I was hoping for 1080p HD quality
I hoped HTC would come with an update that can maximize its camera features up to 1080p resolution. oh well..
lucid_nightmare927 said:
I saw that HTC video doing a slow motion video of a man doing fire/flame stunt. Actually I was amazed and got excited that I wanted to try that Slow motion on my own with something else like a sprinkler maybe.
So I found one at a park and as soon as I started shooting the video (slow motion video under video settings) WTH!!!! The resolution dropped to something like 768x432 and its a bite pixellated, not true HD (1080p) which I thought I'd expect just like from the HTC video... Yes you can trim/edit the video that's cool but I was hoping for 1080p HD quality
I hoped HTC would come with an update that can maximize its camera features up to 1080p resolution. oh well..
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Well I guess is impossible because the Snapdragon 600 doesn't support the record of 1080p videos at 120fps :\
I'm on stock 4.2.2 and I've recorded this slow motion clip a week ago (don't forget to turn on HD when viewing it). The quality seems fine to me.
Yeah. The quality is awfull. The slow motion video from the the device with the man in the night eith fire from his mouth is years ahead bettrr than the ones we can record... But why HTC ?!
Sent from my HTC One using xda app-developers app
some info on this please?
hello guys. i'm sorry for this little derailing question but it was the only thread i found:
i'm currently digging into slo-mo available in latest phones.
i just saw some HTC ONE samples and i was very disappointed from the low resolution.
i was particularly impressed with the new Iphone 5S 120 FPS real 720P feature. it really looks 720 and not upscaled like the fake 720p NOTE 3 slo-mo. however i cannot use iphone anymore due to the small screen.
so from this thread i gather the faster frame limitation is by the processor itself? (snapdragon 600-800? what's the 720P limit?)
i am willing to wait until an Android phone will have a usable 720 slo-mo..
so what hardware could provide this? as i can see nowdays, the latest android phones cannot do it (not the NOTE 3 or the G2 which doesn't even have slo-mo to begin with).
my choice now are either wait for a phone that will (maybe the next HTC?), or wait till apple make a bigger phone (cannot stand the small screen).
your thoughts on this?
thanks.
Hey Guys
I got my HTC One a few days ago, coming from a Nexus 4.
While i was doing research on this phone before i bought it, i saw a video clip on YouTube, where some people were at a party and recording a fire show. They then edited the video and slowed down just the part with the fire. I cant find that video anywhere nor can i remember how to do it.
Guess what i'm asking is how do you put a section of a video in slow motion?
Regards
http://www.htc.com/www/smartphones/htc-one/#how-tos
ClydeB1 said:
http://www.htc.com/www/smartphones/htc-one/#how-tos
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Thanks
Doesn't work for me on 4.2.2
Slow Motion = Low Resolution
I saw that HTC video doing a slow motion video of a man doing fire/flame stunt. Actually I was amazed and got excited that I wanted to try that Slow motion feature on my own with something else like... a sprinkler maybe.
So I found one at a park and as soon as I started shooting the video (slow motion video under video settings) WTH!!!! The resolution dropped to something like 768x432 and its a bite pixellated, not true HD (1080p) which I thought I'd expect just like from the HTC video... Yes you can trim/edit the video that's cool but I was hoping for 1080p HD quality
I hoped HTC would come with an update that can maximize its camera features up to 1080p resolution. oh well..
I must say I am very impressed with the video quality on the Note 4. The OIS gives video great stability. I have a couple of questions about resolutions/fps and lossless zoom.
1.I heard somewhere that in smooth motion (where it defaults to 1080p) the fps is double that of the note 3 in this mode, ie 120fps. Can anyone confirm this? This would be awesome as unless I'm mistaken we could take 2mp snap shots from the video and these would have an equivalent shutter speed of 1/120 - great for moving objects!
2. Does anyone know how far you can zoom in losslessly in the various resolutions. I've got a feeling it's 1.5x in 1080p but I'm not sure. Would also be interested to know if we can zoom in losslessly at higher resolutions and to what extent. Although shooting in 4k isn't that useful to me, the ability to screenshot 8mp images from any part of the video is a very cool feature.