[Roman91]

ragazzi, qualcuno mi sa indirizzare su una guida oppure, nel caso, spiegarmi come posso convertire la mia videoteca in h265 (ho anche filmati 700x400, conviene passare cmq al nuovo codec?) senza perdite di qualità ..ovvero ho diversi video ad esempio in h263, come li passo in h265 mantenendo la medesima qualità del master? ..ad ora ho usato handbrake (ho portato un video di 3 ore da 3Gb a 700mb con un calo pazzesco dell'overall bit rate ..da 2,5k kb/s a 0,57 ...che sia quello il colpevole del degrado della qualità video?)

3gb

Format                      : AVI
Format/Info                 : Audio Video Interleave
Format profile              : OpenDML
File size                   : 2.87 GiB
Duration                    : 2 h 43 min
Overall bit rate            : 2 507 kb/s
Writing application         : FairUse Wizard - http://fairusewizard.com
Writing library             : VirtualDub build 30009/release
Video
ID                          : 0
Format                      : MPEG-4 Visual
Format settings             : BVOP1
Format settings, BVOP       : 1
Format settings, QPel       : No
Format settings, GMC        : No warppoints
Format settings, Matrix     : Default (H.263)
Muxing mode                 : Packed bitstream
Codec ID                    : DX50
Codec ID/Hint               : DivX 5
Duration                    : 2 h 43 min
Bit rate                    : 2 368 kb/s
Nominal bit rate            : 4 854 kb/s
Width                       : 704 pixels
Height                      : 288 pixels
Display aspect ratio        : 2.40:1
Frame rate                  : 25.000 FPS
Color space                 : YUV
Chroma subsampling          : 4:2:0
Bit depth                   : 8 bits
Scan type                   : Progressive
Compression mode            : Lossy
Bits/(Pixel*Frame)          : 0.467
Stream size                 : 2.71 GiB (94%)
Writing library             : DivX 6.1.1 (UTC 2006-02-01)

a questo, con evidenti perdite
700mb

Format                      : Matroska
Format version              : Version 4 / Version 2
File size                   : 673 MiB
Duration                    : 2 h 43 min
Overall bit rate            : 574 kb/s
Encoded date                : UTC 2018-04-25T20:01:29Z
Writing application         : HandBrake 1.1.0 2018040700
Writing library             : Lavf57.7.2

Video
ID                          : 1
Format                      : HEVC
Format/Info                 : High Efficiency Video Coding
Format profile              : Main@L2.1@Main
Codec ID                    : V_MPEGH/ISO/HEVC
Duration                    : 2 h 43 min
Width                       : 704 pixels
Height                      : 288 pixels
Display aspect ratio        : 2.40:1
Frame rate mode             : Constant
Frame rate                  : 25.000 FPS
Color space                 : YUV
Chroma subsampling          : 4:2:0
Bit depth                   : 8 bits
Writing library             : x265 2.6:[Windows][GCC 7.2.0][64 bit] 8bit+10bit+12bit
Encoding settings           : cpuid=1173503 / frame-threads=3 / numa-pools=12 / wpp / no-pmode / no-pme / no-psnr / no-ssim / log-level=2 / input-csp=1 / input-res=704x288 / interlace=0 / total-frames=0 / level-idc=0 / high-tier=1 / uhd-bd=0 / ref=3 / no-allow-non-conformance / no-repeat-headers / annexb / no-aud / no-hrd / info / hash=0 / no-temporal-layers / open-gop / min-keyint=25 / keyint=250 / bframes=4 / b-adapt=0 / b-pyramid / bframe-bias=0 / rc-lookahead=15 / lookahead-slices=0 / scenecut=40 / no-intra-refresh / ctu=64 / min-cu-size=8 / no-rect / no-amp / max-tu-size=32 / tu-inter-depth=1 / tu-intra-depth=1 / limit-tu=0 / rdoq-level=0 / dynamic-rd=0.00 / no-ssim-rd / signhide / no-tskip / nr-intra=0 / nr-inter=0 / no-constrained-intra / strong-intra-smoothing / max-merge=2 / limit-refs=3 / no-limit-modes / me=1 / subme=2 / merange=57 / temporal-mvp / weightp / no-weightb / no-analyze-src-pics / deblock=0:0 / sao / no-sao-non-deblock / rd=2 / no-early-skip / rskip / fast-intra / no-tskip-fast / no-cu-lossless / no-b-intra / no-splitrd-skip / rdpenalty=0 / psy-rd=2.00 / psy-rdoq=0.00 / no-rd-refine / analysis-reuse-mode=0 / no-lossless / cbqpoffs=0 / crqpoffs=0 / rc=crf / crf=22.0 / qcomp=0.60 / qpstep=4 / stats-write=0 / stats-read=0 / ipratio=1.40 / pbratio=1.30 / aq-mode=1 / aq-strength=1.00 / cutree / zone-count=0 / no-strict-cbr / qg-size=32 / no-rc-grain / qpmax=69 / qpmin=0 / no-const-vbv / sar=1 / overscan=0 / videoformat=5 / range=0 / colorprim=5 / transfer=1 / colormatrix=6 / chromaloc=0 / display-window=0 / max-cll=0,0 / min-luma=0 / max-luma=255 / log2-max-poc-lsb=8 / vui-timing-info / vui-hrd-info / slices=1 / no-opt-qp-pps / no-opt-ref-list-length-pps / no-multi-pass-opt-rps / scenecut-bias=0.05 / no-opt-cu-delta-qp / no-aq-motion / no-hdr / no-hdr-opt / no-dhdr10-opt / analysis-reuse-level=5 / scale-factor=0 / refine-intra=0 / refine-inter=0 / refine-mv=0 / no-limit-sao / ctu-info=0 / no-lowpass-dct / refine-mv-type=0 / copy-pic=1
Default                     : Yes
Forced                      : No
Color range                 : Limited
Color primaries             : BT.601 PAL
Transfer characteristics    : BT.709
Matrix coefficients         : BT.601