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Old 6th August 2013, 19:24
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Question video quality from porn web

hi
i was going to download video from
Code:
l3ch369
there are two best options to download:
Code:
http://prntscr.com/1jqosu
hd ready and full hd

i googled that hd ready can be 720p or 1080p. full hd can be only 1080p.
but they lie in some specific probably older scene, because i have downloaded from both ways and here is files description.

hd ready was downloading size: 630 mb
full had was: 489 mb

here is copied info for bigger one file:
part1:
Code:
[Used Filter List]
(1) MP4 Source
(2) Video Codec/Transform
(3) Enhanced Video Renderer(Custom Present)
(4) Audio Codec/Transform
(5) DirectSound Audio Renderer
[Video Information]
Video Codec:avc1 - FFmpeg Decoder(h264)
Input type:avc1(24 bits)
Input size:1280 x 720(1.78:1)
Output type:YUY2(16 bits)
Output Size:1280 x 720(1.78:1)
Frame Rate:25.00
BitRate: Unknown
[Audio Information]
Audio Codec:AAC(0xaac0) - Default Decoder
Sample rate:44100 ->44100 samples / sec
Bit rate:16 ->16 bits / sample
Channels:2 ->2 channels
Bitrate: 0 kbps
part2:
Code:
file path on my hdd xxx.mp4
 General
 Complete name : file path on my hdd xxx.mp4
 Format : MPEG-4
 Format profile : Base Media
 Codec ID : isom
 File size : 630 MiB
 Duration : 40mn 39s
 Overall bit rate mode : Variable
 Overall bit rate : 2 165 Kbps
 Writing application : Lavf52.93.0
 Video #1
 ID : 1
 Format : AVC
 Format/Info : Advanced Video Codec
 Format profile : [email protected]
 Format settings, CABAC : Yes
 Format settings, ReFrames : 4 frames
 Codec ID : avc1
 Codec ID/Info : Advanced Video Coding
 Duration : 40mn 39s
 Bit rate : 2 048 Kbps
 Width : 1 280 pixels
 Height : 720 pixels
 Display aspect ratio : 16:9
 Frame rate mode : Constant
 Frame rate : 25.000 fps
 Color space : YUV
 Chroma subsampling : 4:2:0
 Bit depth : 8 bits
 Scan type : Progressive
 Bits/(Pixel*Frame) : 0.089
 Stream size : 596 MiB (95%)
 Writing library : x264 core 107
 Encoding settings : cabac=1 / ref=4 / deblock=1:0:0 / analyse=0x3:0x113 / me=umh / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=4 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / constrained_intra=0 / bframes=3 / b_pyramid=0 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=abr / mbtree=1 / bitrate=2048 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / ip_ratio=1.41 / aq=1:1.00
 Audio #2
 ID : 2
 Format : AAC
 Format/Info : Advanced Audio Codec
 Format profile : LC
 Codec ID : 40
 Duration : 40mn 39s
 Bit rate mode : Variable
 Bit rate : 112 Kbps
 Channel(s) : 2 channels
 Channel positions : Front: L R
 Sampling rate : 44.1 KHz
 Compression mode : Lossy
 Delay relative to video : 40ms
 Stream size : 32.5 MiB (5%)




smaller file:
part1:
Code:
[Used Filter List]
(1) MP4 Source
(2) Video Codec/Transform
(3) Enhanced Video Renderer(Custom Present)
(4) Audio Codec/Transform
(5) DirectSound Audio Renderer
[Video Information]
Video Codec:avc1 - FFmpeg Decoder(h264)
Input type:avc1(24 bits)
Input size:1280 x 720(1.78:1)
Output type:YUY2(16 bits)
Output Size:1280 x 720(1.78:1)
Frame Rate:25.00
BitRate: Unknown
[Audio Information]
Audio Codec:AAC(0xaac0) - Default Decoder
Sample rate:44100 ->44100 samples / sec
Bit rate:16 ->16 bits / sample
Channels:2 ->2 channels
Bitrate: 77 kbps


part2:
Code:
file path on my hdd xxx.mp4
 General
 Complete name : file path on my hdd xxx.mp4
 Format : MPEG-4
 Format profile : Base Media / Version 2
 Codec ID : mp42
 File size : 489 MiB
 Duration : 40mn 40s
 Overall bit rate mode : Variable
 Overall bit rate : 1 680 Kbps
 Encoded date : UTC 2013-04-18 12:24:02
 Tagged date : UTC 2013-04-18 16:14:08
 Writing application : HandBrake 0.9.8 2012071800
 Video #1
 ID : 1
 Format : AVC
 Format/Info : Advanced Video Codec
 Format profile : [email protected]
 Format settings, CABAC : Yes
 Format settings, ReFrames : 4 frames
 Codec ID : avc1
 Codec ID/Info : Advanced Video Coding
 Duration : 40mn 39s
 Bit rate mode : Variable
 Bit rate : 1 600 Kbps
 Width : 1 280 pixels
 Height : 720 pixels
 Display aspect ratio : 16:9
 Frame rate mode : Constant
 Frame rate : 25.000 fps
 Color space : YUV
 Chroma subsampling : 4:2:0
 Bit depth : 8 bits
 Scan type : Progressive
 Bits/(Pixel*Frame) : 0.069
 Stream size : 465 MiB (95%)
 Writing library : x264 core 120
 Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=3 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=50 / rc=abr / mbtree=1 / bitrate=1600 / ratetol=1.0 / qcomp=0.60 / qpmin=3 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
 Encoded date : UTC 2013-04-18 12:24:02
 Tagged date : UTC 2013-04-18 16:14:07
 Color primaries : BT.709
 Transfer characteristics : BT.709
 Matrix coefficients : BT.709
 Audio #2
 ID : 2
 Format : AAC
 Format/Info : Advanced Audio Codec
 Format profile : LC
 Codec ID : 40
 Duration : 40mn 40s
 Bit rate mode : Variable
 Bit rate : 77.9 Kbps
 Maximum bit rate : 90.0 Kbps
 Channel(s) : 2 channels
 Channel positions : Front: L R
 Sampling rate : 44.1 KHz
 Compression mode : Lossy
 Delay relative to video : 80ms
 Stream size : 22.7 MiB (5%)
 Encoded date : UTC 2013-04-18 12:24:02
 Tagged date : UTC 2013-04-18 16:14:04

so which file has higher visible quality, or which should i download ?

ty v much for opinions



there is difference in:
codec ID
writing application
writing library (core number)
...
Last edited by dr_doom; 6th August 2013 at 20:06. Reason: disguised paysite name
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Old 7th August 2013, 06:42

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They isn't likely any noticeable difference between the two depending on how it's displayed.

They are the same resolution. The file size differences are a result of the codec used.

Why not download both and test for yourself?
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Old 7th August 2013, 08:39
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Ultimately you'll have to download both versions and compare - but I would think that the first file would be better quality as it has a higher bitrate of 2048kbs vs. 1600kbs for the smaller.

A lot will depend on what you are using to view it - a crappy 7 year old monitor like mine or a proper HD TV.

Having said that, I would comment that even the first file doesn't really have true HD specs - 2048kbs is a very low bitrate for HD. A lot of sites claim to be offering HD when they aren't at all because of the low bitrate encoding. Just consider that a Blu-ray disc (which is true HD) - has a max bitrate of 40Mbps (1Mbps=1024kbs). That will give you some idea of just how much quality has been squeezed out of those "HD" clips you have.

720p and 1080p don't stand for much when the clips have had the shit kicked out of them by lowering the bitrate.
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Old 8th August 2013, 14:53
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but I heard somewhere (don't know if correct) that bitrate is just theoretical issue. because for human eye, you won't see a difference bettween higher and lower
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Old 8th August 2013, 22:07
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Quote:
Originally Posted by Rapier View Post
but I heard somewhere (don't know if correct) that bitrate is just theoretical issue. because for human eye, you won't see a difference bettween higher and lower
Check out this Wikipedia entry.
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Old 10th August 2013, 06:55

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Quote:
Originally Posted by Rapier View Post
but I heard somewhere (don't know if correct) that bitrate is just theoretical issue. because for human eye, you won't see a difference bettween higher and lower

You are likely confusing bitrate and framerate.

framerate would only apply for like gaming.

bitrate is the amount of data in the image. If you have a shot glass of beer and a pitcher of beer, could you tell the difference?
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Old 11th August 2013, 00:34
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Quote:
Originally Posted by Rapier View Post
but I heard somewhere (don't know if correct) that bitrate is just theoretical issue. because for human eye, you won't see a difference bettween higher and lower
Quote:
Originally Posted by OddBa11 View Post
You are likely confusing bitrate and framerate.

framerate would only apply for like gaming.

bitrate is the amount of data in the image. If you have a shot glass of beer and a pitcher of beer, could you tell the difference?
OddBa11 is correct. Bitrate can and will make a massive difference to quality. Click on the two thumbs below to expand the pics so that you can see the change in quality. The first is a screenshot from a movie with a bitrate of just over 5000Kbs, the second is a screenshot the same frame from the same movie which has been re-encoded a 950Kbs.





While I would consider the first one HD by p0rn standards it isn't really close to real HD - simply because of the bitrate.
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Old 11th August 2013, 04:44
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I have never worked with HD but for standard DVD or TV rips I think a bitrate between
2500-3000 is the best. You don't really see any difference above that. 500 looks like
old youtube clips.
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