1440p and upscaling - General Questions and Answers

1440p screens are set to become the next advancement, but could this mean a negative for video consumption?
Most high resolution content is 720p (ie YouTube app) with the exception of local media usually 1080p max. Neither of these would be at native resolution on a 1080p screen, thus introducing upscaling which may affect video quality. To what extent, is dependent on the GPU.
Would just like to hear some opinions as to whether there will be a noticeable degradation in user experience.

23Six said:
1440p screens are set to become the next advancement, but could this mean a negative for video consumption?
Most high resolution content is 720p (ie YouTube app) with the exception of local media usually 1080p max. Neither of these would be at native resolution on a 1080p screen, thus introducing upscaling which may affect video quality. To what extent, is dependent on the GPU.
Would just like to hear some opinions as to whether there will be a noticeable degradation in user experience.
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I don't think so, since the size of the screen is too small for you to notice the difference.

Related

best video format for ppc.

I want to know what is the best format to convert videos for ppc so i can get best combination of quality and performance, size dosnt matter for me.
I am alao looking for the best practice guide.... so i can learn how to get smooth video playback.
H.264. Read my H.264 Bible, it exaplains everything.
Thanks I am looking for your bible.
I think I may have overlooked something obvious, but where is your bible?
I'm having terrible trouble getting decent video playback on my i-mate 9502
Here guys
http://www.allaboutsymbian.com/forum/showthread.php?t=67863
It seems you can't expect much from the 9502 - it doesn't have working drivers either - see http://forum.xda-developers.com/showthread.php?t=351788&page=8
You could give CorePlayer a try, though
I still have a problem that I have a wmv which play smoothly on my pc but now I convert it to h.264 but it still lagy (as before) on my wizard.
Do you use CorePlayer?
Did you try optimizing (bo Cabac etc?)
I am using core player latest build but I dont know about "optimizing (bo Cabac etc?)"
Can you explain me?
btw I convert the video from xilisoft in 320 res
azfar said:
I am using core player latest build but I dont know about "optimizing (bo Cabac etc?)"
Can you explain me?
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I've explained this all in the H.264 Bible... there're a lot of areas of optimization.
BTW, the Wizard is VERY slow. Therefore, I recommend not only goig for CorePlayer, but also sticking to DivX if the increased storage requirements aren't a problem.
you mean divx codec, not player right?
azfar said:
you mean divx codec, not player right?
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Click to collapse
Both. You need to encode your stuff with DivX and play back preferably with TCPMP or, even better, CorePlayer.
I switched my 9502's coreplayer setings to RawFramebuffer and now it plays QVGA video at an acceptable 24fps / 500kbps no problem. Still seems to hate VGA video though, but I guess that's a non-issue until they bring out the SDHC patch.
mike freegan said:
I switched my 9502's coreplayer setings to RawFramebuffer and now it plays QVGA video at an acceptable 24fps / 500kbps no problem. Still seems to hate VGA video though, but I guess that's a non-issue until they bring out the SDHC patch.
Click to expand...
Click to collapse
any other core player video settings for better performance?
The H.264 codec is not a good choice for playback on slower devices. If you flip though the h.264 bible (linked below) you'll see that even a 330 MHz OMAP (N95) isn't able to handle a h.264 video 100% without disabling features. You haven't got a chance with a 200 MHz OMAP and your going to have high CPU utilization with a 400 MHz CPU.
http://www.aximsite.com/boards/applications/222389-h-264-k-mpeg-4-part-10-avc-bible.html
If size is not a factor, then you're not gaining anything by using h.264. The main benefit of h.264 over XviD is better quality at the same size or same quality at a lower size. XviD/DivX has much lower compression complexity and requires less CPU power/utilization to decode but ends up taking more space.
If you have a fast processor and you want the best quality at the smallest size, go with h.264/AVC. If size is not a factor, stick with XviD/DivX(ASP). Even with a fast processor, you will have lower CPU utilization and longer battery life (assuming you are using CPU scaling).
Check out my guide if you want some help converting to XviD.
http://forum.videohelp.com/topic349738.html
trueg said:
The H.264 codec is not a good choice for playback on slower devices. If you flip though the h.264 bible (linked below) you'll see that even a 300 MHz OMAP (N95) isn't able to handle a h.264 video 100% without disabling features. You haven't got a chance with a 200 MHz OMAP and your going to have high CPU utilization with a 400 MHz CPU.
http://www.aximsite.com/boards/applications/222389-h-264-k-mpeg-4-part-10-avc-bible.html
If size is not a factor, then you're not gaining anything by using h.264. The main benefit of h.264 over XviD is better quality at the same size or same quality at a lower size. XviD/DivX has much lower compression complexity and requires less CPU power/utilization to decode but ends up taking more space.
If you have a fast processor and you want the best quality at the smallest size, go with h.264/AVC. If size is not a factor, stick with XviD/DivX(ASP). Even with a fast processor, you will have lower CPU utilization and longer battery life (assuming you are using CPU scaling).
Check out my guide if you want some help converting to XviD.
http://forum.videohelp.com/topic349738.html
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Click to collapse
unfortunately the software you refer doesnt support wmv conversion.
Well, honestly I've never needed to convert a wmv(ASF) video before. I never would have thought it would not accept WMV files, but I downloaded a music video to test and indeed, even when forced, PocketDivxEncoder wouldn't accept it. I then tried AutoGK which is another high quality converter/front end and it also would not accept WMV files (I would assume the same for Gordon Knot).
To aid you in your quest, I went on a search for tools to help you in your task.
Tools tested....
AllToAVI - http://www.videohelp.com/tools/alltoavi - easy to install, fairly intuitive, fast encoding, no option for cropping or rotation, limited audio options.
--I ran a quick test on my wmv music video using AllToAVI. The original WMV did not play very well (worse than a slide show) on my HTC Touch (Elfin - 201Mhz OMAP). The resulting XVID was actually the same size, but played perfectly.
WinFF - http://www.videohelp.com/tools/WinFF - easy to install, minimalist interface (very limited), fast encoding. Unlike AllToAVI, WinFF did not analyze the source or make suggestions on video frame rate or aspect ratio. It worked well enough and the resulting XVID looked as good and played as well as the file created by AllToAVI.
MediaCoder - http://www.videohelp.com/tools/MediaCoder - wow, this program is pretty amazing. Easy to install, tons of options, fast encoding. This program is much more customizable than PocketDivXEncoder, but this is to be expected. This program can convert from pretty much any codec to pretty much any codec. There are options for pretty much every aspect of the conversion process (which may be too much for some people). The resultant video was again the same size, but quality was a bit higher since I was able to crop the black bars.
Basically, if you can use PocketDivXEncoder (i.e. your video is supported) stick with it since it is fast, high quality and easy to use. If you want the ability to customize every single aspect of the conversion, use Media Coder. If you can't use PocketDivXEncoder and you want something very simply to convert your unsupported video, give AllToAVI a shot.
many thanks for your efforts. I am tryijgnall those convertors and will let you know the results.
can I play the 700MB dvdrip (.avi divx) version of movie on pda. Can it handle it?

[Q] Rendering Games at non-native resolutions.

With the advent of 1080p screens on ~5inch screens I was wondering if there is a way to render games at below native resolution. For example many people are agreed that 720p at ~5inch is already at the limit of pixel perception at normal viewing distances. This could lead to smoother gameplay and a much improved experience at the loss of fairly negligible visual fidelity loss.

Forcing 4k resolution over HDMI

I've connected my Shield Tablet to 4k monitor (some 24" Dell), and I've been playing with it couple of hours trying to force true 3840x2160p30 render over the HDMI. Game outputs 1920x1080, which is being upscaled to 4k resolution - I can see normal upscaling artifacts, quad pixel aliasing, etc., also screenshots pulled from the device are in 1920x1080 resolution (not 1920x1200, like shield's MIPI panel, so I'm sure I'm pulling from correct frame buffer).
Question: How I can force the shield to RENDER at 4k? I don't care about abysmal fps I'm going to get, I need true 4k output.
Halp...?
Vatharian said:
I've connected my Shield Tablet to 4k monitor (some 24" Dell), and I've been playing with it couple of hours trying to force true 3840x2160p30 render over the HDMI. Game outputs 1920x1080, which is being upscaled to 4k resolution - I can see normal upscaling artifacts, quad pixel aliasing, etc., also screenshots pulled from the device are in 1920x1080 resolution (not 1920x1200, like shield's MIPI panel, so I'm sure I'm pulling from correct frame buffer).
Question: How I can force the shield to RENDER at 4k? I don't care about abysmal fps I'm going to get, I need true 4k output.
Halp...?
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Bump

Too much margins in streaming video

Some fix for the exaggerated lateral margins that it makes in the videos to the screens of YouTube, Netflix, etc.? You can zoom and fill the screen but the video in its original format, has an excessive crop.
In other Xiaomi devices this does not happen.
dimequetedire said:
Some fix for the exaggerated lateral margins that it makes in the videos to the screens of YouTube, Netflix, etc.? You can zoom and fill the screen but the video in its original format, has an excessive crop.
In other Xiaomi devices this does not happen.
Click to expand...
Click to collapse
First of all, I am pretty sure you posted in the wrong category. This should got to Questions & Answers.
Did you ever play GameBoy Color games on the GameBoy Advance?
If yes, you noticed, that all the games had black margins, except you were resizing the image with the L/R button.
The reason for that is that what is being displayed does not match the resolution of the screen. So if your video is 480*240p then it will have margins on a Full HD or 2k display.
Same goes for any device, like your phone. Previous phones did not have margins, because they probably had a screen resolution of precisely 1920x1080p. So most videos will fit perfectly, because that is a very common resolution for videos.
Now the POCO has a higher resolution: 1080 x 2400, which is not perfectly standard. Your video is guaranteed to not have this resolution, as can be seen from the screenshot. So of course there will be black margins. The only way to "remove" the margins would be to resize your video or get an older phone with a resolution of exactly Full HD.
Conclusively, that's not an issue with your phone or whatever. It's an issue regarding different resolutions, which happens to EVERY device on earth that has a display measured in pixels.
Although they are related it's more of the aspect ratio thing than resolution. Common aspect ratio for content on platforms OP has mentioned is 16:9 where our poco has 20:9 screen. 16:9 was the most popular on mobile devices before the "bezel less" era and still is the most popular for TV.
Try to do the pinch outwards gesture to stretch the video to full screen?
Use the Video Toolbox?

Possible to force 4k streaming on Android?

I know Android is likely limited to 1080p by widevine L1, but is there any way to force / trick Disney+, Netflix, Hulu, HBOMax and other streaming services currently serving low quality 1080p streams to Android phone / tablet users to serve proper 4k?
I get that most Android devices are FHD+ but they would still benefit hugely from 4k steams that are much higher bitrate, have much wider gamut color (bt.709 vs bt.2020) and more coherent HDR mapping.
I have an S22+ and a Tab S8 Ultra on 1gbps fiber. Watching 4k YouTube is awesome, but recent content like Obi-Wan on Disney+ or Love, Death & Robots on Netflix are an unbearably grainy low bitrate mess - an experience that's remarkably poor for a premium device. Worse than even 1080p streamed via edge/safari or a pc/mac desktop Disney+ app.
Is there any way to make the (non YouTube) streaming experience on Android less terrible?
I really wish there was a solution to this It's 2023 and it is shocking that YouTube is still the only app that can do this
Hello my friends. Havent we had any solution so far ? I have a google TV stick and I would like to force 4K or 2K instead of 1080p.

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