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Author Topic: 4k res (4.096 x 3.072) on youtube - too much for my pc... and screen xD  (Read 3135 times)
VegasKill
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« on: Tue 13.07.2010 21:03:29 »

How much resolution does youtube need? 4.096 x 3.072??!
1080p looks worse than a regular dvd on youtube. finger
Even the 4k videos can be paused and the morion blur artifacts cover centimeters of my screen.
No wonder they uploaded that many videos with unsharp-fading effects and no moving scenes -> to hide the bad quality.


Anyways, give it a try if you have a fast machine ...and a big screen xD
youtube.com/view_play_list?p=5BF9E09ECEC8F88F

I drop up to 2 frames a second when there is lots of motion (rightclick menu), at duo x 3.6 ghz and flash 10 with gpu support. wasted

« Last Edit: Tue 13.07.2010 21:09:06 by VegasKill »

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Bloody.Bender
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« Reply #1 on: Tue 13.07.2010 21:38:30 »

I can't see any difference between 4k 1080p or 720p  Roll Eyes

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m4rt1ni
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« Reply #2 on: Tue 13.07.2010 22:25:11 »

4K vs 1080p - with unchanged bitrate and more compression = a box full of fail.
It's exactly the same type of fail as "more Megapixels means better photo" on the camera market

VegasKill
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« Reply #3 on: Tue 13.07.2010 23:01:53 »

4K vs 1080p - with unchanged bitrate and more compression = a box full of fail.
It's exactly the same type of fail as "more Megapixels means better photo" on the camera market
more megapixles on thinner camera with shorter objective and smaller sensor. afrodd.gif

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aka_sova
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« Reply #4 on: Wed 14.07.2010 13:27:55 »

Looks great, but yea, very low fps sometimes....  msn011.gif

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VegasKill
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« Reply #5 on: Fri 30.07.2010 11:40:04 »


4k widescreen test video for ut3
Recorded with dumpframes, 27.3 mb / frame, 24fps, all nonblended keyframes - it's a notebook killer =)
hf


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VegasKill
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« Reply #6 on: Fri 30.07.2010 12:01:16 »

Recorded with dumpframes, 27.3 mb / frame, 24fps, all nonblended keyframes - it's a notebook killer =)
PS: as expected, it looks like crap on yt. Crazysmile1

Fu, yt, for removing a video per week for Germany. In future, movies may get a trailer on yt and a link to dl the movie. Better quality, higher fps and no worries about WMG's © ftw. finger finger

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VegasKill
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« Reply #7 on: Sat 31.07.2010 00:01:12 »

I did some investigations on the quality of the youtube recode:

The results spoil A BIG HOAX about 4k!

If you compare the 1080p screen resolution, it makes up less than 22% of the 4k resolution used in this youtube video, but 4k is supposed to get along with 50% of the reccomended bitrate for 1080p! While being 5 times as big? For serious, youtube??? wasted
Bitrate times factor 10 for an adequate 4k quality, making 100 instead of 10.3mbit!

Some details from the video I uploaded vs the 4k youtube recode. (I downloaded the 4k youtube video and analyzed it with mediainfo and extracted snapshots with after effects)

Uploaded video encoding:
bitrate: 250.000kbit (over 800 mb of maximum image quality for less than 40 seconds of 4k-'4crap' xD)
format: h.264 mainconcept
resolution: 4096x2304 (16:9)
fps: 24
audio: 320kbit AAC
Extracted video snapshot (1276x798 pixles, 330kb jpg):


Youtube recode:
bitrate: 10.300kbit
format: h.264 avc
resolution: 4096x2304 (16:9)
fps: 24
audio: 124kbit AAC

Extracted video snapshot (1276x798 pixles, 139kb jpg):



Here are some bitrate / resolution specifications (compare to wikipedia) that make clear why youtube 4k looks like crap:

10 Mbit/s video bitrate - This video on Youtube (4096x2304)
9.8 Mbit/s max video bitrate -- DVD (720 × 576)
8 to 15 Mbit/s typical video bitrate -- HDTV (1920x1080)
40 Mbit/s max video bitrate -- Blu-ray Disc (1920x1080)


...Youtube RIP for gaming videos smiley-rip5.gif

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aka_sova
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« Reply #8 on: Sat 31.07.2010 10:44:00 »

Also 4k widescreen resolution lags like hell on my PC, even music doesn't sound fluently...

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