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  1. Hi all,
    want to know which software or what method used to convert these 2 mp4 and mkv format files.

    i have their media Info details-

    1) mp4 file info -

    Format : MPEG-4
    Format profile : Base Media
    Codec ID : isom (isom/avc1/iso6)
    File size : 16.4 MiB
    Duration : 13 min 25 s
    Overall bit rate mode : Variable
    Overall bit rate : 171 kb/s
    Encoded date : UTC 2017-08-10 20:21:15
    Tagged date : UTC 2017-08-10 20:21:15
    IsTruncated : Yes

    Video
    ID : 1
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : High@L4.1
    Format settings, CABAC : Yes
    Format settings, RefFrames : 4 frames
    Codec ID : avc1
    Codec ID/Info : Advanced Video Coding
    Duration : 13 min 25 s
    Bit rate : 1 750 kb/s
    Maximum bit rate : 3 594 kb/s
    Width : 1 280 pixels
    Height : 688 pixels
    Display aspect ratio : 1.85:1
    Frame rate mode : Constant
    Frame rate : 23.976 (24000/1001) FPS
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Progressive
    Bits/(Pixel*Frame) : 0.083
    Stream size : 168 MiB
    Title : 264@GPAC0.5.2-DEV-rev248-g39d5978-master
    Writing library : x264 core 146 r2538 121396c

    Encoding settings : cabac=1 / ref=4 / deblock=1:-1:-1 / analyse=0x3:0x133 / me=umh / subme=7 / psy=1 / psy_rd=1.00:0.10 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / 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=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=50 / rc=2pass / mbtree=1 / bitrate=1750 / 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
    Encoded date : UTC 2017-08-10 20:21:15
    Tagged date : UTC 2017-08-10 20:21:20

    Audio
    ID : 2
    Format : AAC
    Format/Info : Advanced Audio Codec
    Format profile : HE-AAC / LC
    Codec ID : 40
    Duration : 13 min 25 s
    Bit rate mode : Variable




    2) mkv file info -

    Format : Matroska
    Format version : Version 4 / Version 2
    File size : 31.1 MiB
    Duration : 38 min 30 s
    Overall bit rate : 113 kb/s
    Writing application : Lavf57.71.100
    Writing library : Lavf57.71.100
    IsTruncated : Yes
    ErrorDetectionType : Per level 1

    Video
    ID : 1
    Format : AVC
    Format/Info : Advanced Video Codec
    Format profile : High@L3
    Format settings, CABAC : Yes
    Format settings, RefFrames : 4 frames
    Codec ID : V_MPEG4/ISO/AVC
    Duration : 38 min 30 s
    Nominal bit rate : 1 381 kb/s
    Width : 854 pixels
    Height : 480 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) : 0.135
    Writing library : x264 core 148 r2643 5c65704
    Encoding settings : cabac=1 / ref=1 / deblock=1:0:0 / analyse=0x3:0x3 / me=dia / subme=1 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc=abr / mbtree=0 / bitrate=1381 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / pb_ratio=1.30 / aq=1:1.00
    Language : English
    Default : Yes
    Forced : No
    DURATION : 00:38:30.046000000
    HANDLER_NAME : VideoHandler

    Audio
    ID : 2
    Format : AAC
    Format/Info : Advanced Audio Codec
    Format profile : LC
    Codec ID : A_AAC
    Duration : 38 min 30 s
    Channel(s) : 2 channels
    Channel positions : Front: L R
    Sampling rate : 44.1 kHz
    Frame rate : 43.066 FPS (1024 SPF)
    Compression mode : Lossy
    Writing library : Lavc57.89.100 libfdk_aac
    Language : English
    Default : Yes
    Forced : No
    DURATION : 00:38:30.060000000
    HANDLER_NAME : SoundHandler
    Quote Quote  
  2. GPAC is GPAC (duh) / mp4box
    x264 is ... x264
    Lavf is the muxer/encoder in/from ffmpeg

    Sincle many tools are build on ffmpeg, x264 and sometimes GPAC it is not easy to say which one was used exactly. (If any - possible the encoder manually combined them himself.)
    Quote Quote  
  3. ....
    Last edited by sneaker; 17th Aug 2017 at 06:53. Reason: double post
    Quote Quote  



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