Can someone explain how it's possible? 1080p at 1.17GB ?

[smackyourfupa]

How can someone achieve a 1080p quality rip at only 1.17 GB? I've copied all the info from MediaInfo. If everything looks correct, then why are there files out there 5x the size with the same quality?


Format : Matroska
File size : 1.17 GiB
Duration : 1h 31mn
Overall bit rate : 1 837 Kbps
Movie name :
Encoded date : UTC 2011-02-10 14:46:41
Writing application : mkvmerge v3.4.0 ('Rapunzel') built on May 15 2010 09:38:20
Writing library : libebml v0.8.0 + libmatroska v0.9.0

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L5.1
Format settings, CABAC : Yes
Format settings, ReFrames : 16 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 1h 31mn
Nominal bit rate : 1 639 Kbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.033
Title : Track01
Writing library : x264 core 79 r1342kMod e8501ef
Encoding settings : cabac=1 / ref=16 / deblock=1:-2:-1 / analyse=0x3:0x133 / me=tesa / subme=10 / psy=1 / psy_rd=1.0:0.2 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / chroma_qp_offset=-3 / threads=3 / nr=0 / decimate=1 / mbaff=0 / constrained_intra=0 / bframes=4 / b_pyramid=0 / b_adapt=2 / b_bias=0 / direct=3 / wpredb=1 / wpredp=2 / keyint=250 / keyint_min=25 / scenecut=40 / rc_lookahead=60 / rc=2pass / mbtree=1 / bitrate=1639 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / aq=1:1.00
Language : English

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format version : Version 4
Format profile : LC
Codec ID : A_AAC
Duration : 1h 31mn
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Title : 5.1 AAC
Language : English

Text
ID : 3
Format : UTF-8
Codec ID : S_TEXT/UTF8
Codec ID/Info : UTF-8 Plain Text
Language : English

[Baldrick]

I doubt it look good. If it doesn't contain lots of motion it might look decent.

[fritzi93]

Same quality? Not a chance. If that 1,639 kbps AVC is correct, and resolution and runtime are correct, it's gotta look like crap.

[EDIT] Beat me again! Okay, if it's something like "Sunrise Earth" with no camera movement at all and scene cuts only every few minutes, plus you're viewing on a smallish screen, maybe it will look acceptable.

[smackyourfupa]

Same quality? Not a chance. If that 1,639 kbps AVC is correct, and resolution and runtime are correct, it's gotta look like crap.

[EDIT] Beat me again! Okay, if it's something like "Sunrise Earth" with no camera movement at all and scene cuts only every few minutes, plus you're viewing on a smallish screen, maybe it will look acceptable.

I'm not sure of the rules if I'm allowed to state the title of the film but actually looks very good. Viewed on a 720p Panny 50" plasma and a 1080P Toshiba 32". BTW, it's an action movie.

[Baldrick]

Without long samples it's useless to discuss....but if it's a commercial movie then you can't post any samples.