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Thread: Convert video files to x265 (all same attributes) in order to reduce file size?

  1. #1

    Question Convert video files to x265 (all same attributes) in order to reduce file size?

    I have 6x MKV video files.

    They're 1.45 GB each.

    If I convert them to x265 and keep all the same attributes (frame size, frame rate, audio, overall quality etc.), will the overall file size be lower?

    If so, how can I achieve this in Windows?

    Code:
    General
    
    Format * * * * * * * * * * * * : Matroska
    Format version * * * * * * * * : Version 2
    File size * * * * * * * * * * *: 1.46 GiB
    Duration * * * * * * * * * * * : 29 min
    Overall bit rate * * * * * * * : 6 999 kb/s
    Encoded date * * * * * * * * * : UTC 2012-11-20 08:14:33
    Writing application * * * * * *: mkvmerge v4.9.1 ('Ich will') built on Jul 11 2011 23:53:15
    Writing library * * * * * * * *: libebml v1.2.1 + libmatroska v1.1.1
    
    Video
    
    ID * * * * * * * * * * * * * * : 1
    Format * * * * * * * * * * * * : AVC
    Format/Info * * * * * * * * * *: Advanced Video Codec
    Format profile * * * * * * * * : High@L4.1
    Format settings, CABAC * * * * : Yes
    Format settings, ReFrames * * *: 5 frames
    Codec ID * * * * * * * * * * * : V_MPEG4/ISO/AVC
    Duration * * * * * * * * * * * : 29 min
    Bit rate * * * * * * * * * * * : 5 486 kb/s
    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) * * * * * * : 0.238
    Stream size * * * * * * * * * *: 1.11 GiB (76%)
    Writing library * * * * * * * *: x264 core 129 r2230 1cffe9f
    Encoding settings * * * * * * *: cabac=1 / ref=5 / deblock=1:-1:-1 / analyse=0x3:0x113 / me=umh / subme=7 / psy=1 / psy_rd=1.00:0.15 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-3 / threads=6 / 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=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=2pass / mbtree=1 / bitrate=5486 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / aq=1:1.00
    Language * * * * * * * * * * * : English
    Default * * * * * * * * * * * *: Yes
    Forced * * * * * * * * * * * * : No
    
    Audio
    
    ID * * * * * * * * * * * * * * : 2
    Format * * * * * * * * * * * * : DTS
    Format/Info * * * * * * * * * *: Digital Theater Systems
    Mode * * * * * * * * * * * * * : 16
    Format settings, Endianness * *: Big
    Codec ID * * * * * * * * * * * : A_DTS
    Duration * * * * * * * * * * * : 29 min
    Bit rate mode * * * * * * * * *: Constant
    Bit rate * * * * * * * * * * * : 1 509 kb/s
    Channel(s) * * * * * * * * * * : 6 channels
    Channel positions * * * * * * *: Front: L C R, Side: L R, LFE
    Sampling rate * * * * * * * * *: 48.0 kHz
    Frame rate * * * * * * * * * * : 93.750 FPS (512 spf)
    Bit depth * * * * * * * * * * *: 24 bits
    Compression mode * * * * * * * : Lossy
    Stream size * * * * * * * * * *: 322 MiB (22%)
    Language * * * * * * * * * * * : English
    Default * * * * * * * * * * * *: Yes
    Forced * * * * * * * * * * * * : No

  2. #2

    Default

    Yes, in principle H.265 should allow for a lower bit rate than H.264/AVC/MPEG4 while keeping the same quality level.

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