Jau galite pradėti taupyti 4K televizoriui, piratai pradėjo talpinti 2160p įrašus

TorrentFreak skelbia, jog piratai rado kaip nulaužti HDMI naudojamą apsaugą ir įsirašyti 4K vaizdo standarto serialų ir filmų iš Amazon bei Netflix.

Serialų epizodai užima keliolika, o filmai keliasdešimt GB vietos. Atsisiunčiau du įrašus pasižiūrėti kokia yra kokybė.

Pirmasis yra serialas, 50 minučių užima tik 3 GB.

General
Unique ID : 243427280118780585635202676090862949660 (0xB7226388CCC26157A875E3CC1D05D51C)
Complete name : Marvels.Jessica.Jones.S01E01.2160p.WEBRip.x264.DD5.1-ETRG\Marvels.Jessica.Jones.S01E01.2160p.WEBRip.x264.DD5.1-ETRG.mkv
Format : Matroska
Format version : Version 4 / Version 2
File size : 3.13 GiB
Duration : 51mn 51s
Overall bit rate : 8 636 Kbps
Encoded date : UTC 2015-11-24 16:49:29
Writing application : mkvmerge v8.5.2 (‘Crosses’) 64bit
Writing library : libebml v1.3.3 + libmatroska v1.4.4
DURATION : 00:51:51.808000000
NUMBER_OF_FRAMES : 97244
NUMBER_OF_BYTES : 248944640
_STATISTICS_WRITING_APP : mkvmerge v8.5.2 (‘Crosses’) 64bit
_STATISTICS_WRITING_DATE_UTC : 2015-11-24 16:49:29
_STATISTICS_TAGS : BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 51mn 51s
Bit rate : 7 999 Kbps
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.040
Stream size : 2.83 GiB (91%)
Writing library : x264 core 146 r2538 121396c
Encoding settings : cabac=1 / ref=1 / deblock=1:-1:-1 / analyse=0x3:0x113 / me=umh / subme=9 / psy=1 / psy_rd=1.00:0.15 / mixed_ref=0 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-3 / threads=12 / lookahead_threads=1 / 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=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=240 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=2pass / mbtree=1 / bitrate=7999 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=31250 / vbv_bufsize=31250 / nal_hrd=none / filler=0 / ip_ratio=1.40 / aq=1:1.00
Default : Yes
Forced : No
Color primaries : BT.709
Matrix coefficients : BT.709

Audio
ID : 2
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : A_AC3
Duration : 51mn 51s
Bit rate mode : Constant
Bit rate : 640 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Stream size : 237 MiB (7%)
Language : English
Default : Yes
Forced : No

Įrašo srauto sparta yra tik 7,8 Mbit/s , panaši kaip ir 1080p serialų įrašų.

Kaip matote iš video kadro esant tokiam srautui nuo judesio pradeda dingti vaizdo detalumas.

Vaizdas su mažai judesio.

Kaip matote tamsoje slepiasi daug triukšmo, bet vaizdas detalus.

Kadras su dienos apšvietimu.

Triukšmo tiek nėra kaip prieš tai, bet užrašas yra nedetalus ir kampuotas. Gali būti, jog ši scena buvo filmuota ne su 4K kamera.

Išvada, jog ne tik naudojamas per mažas srautas koduoti vaizdo įrašą, bet ir yra vietomis galbūt dirbtinai padidinta video raiška.

Kitas failas yra filmas. 2 valandos užima 71,4 GB vietos.

General
Unique ID : 183673069946347628369401043426943634852 (0x8A2E25838FC2EDE097E33E416D1F0DA4)
Complete name : Spider-Man (2002) 2160p WEB-DL FLAC 5.1 x264-TrollUHD.mkv
Format : Matroska
Format version : Version 4 / Version 2
File size : 71.5 GiB
Duration : 2h 1mn
Overall bit rate mode : Variable
Overall bit rate : 84.4 Mbps
Encoded date : UTC 2015-11-11 07:42:36
Writing application : mkvmerge v8.3.0 (‘Over the Horizon’) 64bit
Writing library : libebml v1.3.1 + libmatroska v1.4.2
DURATION : 02:01:10.046000000
NUMBER_OF_FRAMES : 85196
NUMBER_OF_BYTES : 3288403709
_STATISTICS_WRITING_APP : mkvmerge v8.3.0 (‘Over the Horizon’) 64bit
_STATISTICS_WRITING_DATE_UTC : 2015-11-11 07:42:36
_STATISTICS_TAGS : BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L5.1
Format settings, CABAC : Yes
Format settings, ReFrames : 5 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 2h 1mn
Width : 3 840 pixels
Height : 2 076 pixels
Display aspect ratio : 1.85:1
Frame rate mode : Constant
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Writing library : x264 core 146 r2538 121396c
Encoding settings : cabac=1 / ref=5 / deblock=1:-2:-2 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=1.15:0.00 / mixed_ref=1 / me_range=48 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=0 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=8 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=240 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=crf / mbtree=1 / crf=18.0 / qcomp=0.70 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=300000 / vbv_bufsize=300000 / crf_max=0.0 / nal_hrd=none / filler=0 / ip_ratio=1.30 / aq=1:0.70
Default : Yes
Forced : No

Audio
ID : 2
Format : FLAC
Format/Info : Free Lossless Audio Codec
Codec ID : A_FLAC
Duration : 2h 1mn
Bit rate mode : Variable
Channel(s) : 6 channels
Sampling rate : 48.0 KHz
Bit depth : 24 bits
Delay relative to video : 19ms
Writing library : libFLAC 1.3.0 (UTC 2013-05-26)
Language : English
Default : Yes
Forced : No