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  1. Member
    Join Date
    Dec 2001
    Location
    Sweden
    Search Comp PM
    Hi!

    I´m trying to reencode a BD-movie to make it fit on a DVD-9 (AVCHD format).
    I´ve been remuxing it with txRemux and is now about to reencode the video with Mencoder.
    All I want is to get the bitrate down, without any other changes...
    When the encoding starts, this puzzles me:
    Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.

    Now, please remember that I want the video, part from bitrate, as unaltered as possible.
    Besides, prescaling would push the encodingtimes in the wrong direction...

    Why is Mencoder applying this prescaling? The input-file should be 1920x1080 and that is what I want in the output-file!
    Is there a way to prevent this prescaling?

    I´m using the following commands:

    Mencoder.exe -nosound -noskip -mc 0 -of rawvideo -o "D:\Hitman Demux2\HitmanVideo.h264" -ovc x264 -x264encopts
    bitrate=9500:threads=auto:frameref=1:bframes=2:deb lock:level=41:direct_pred=autoartitions=p8x8,b8x8:me=hex:me_range=16ubq=1:chroma_me:mixed_refs:bime:trellis=1:weight_b :b_pyramid:nr=
    0ass=1 -vf harddup "D:\Hitman Demux2\00002.track_4113.264" -mc 0 -noskip

    Mencoder.exe -nosound -noskip -mc 0 -of rawvideo -o "D:\Hitman Demux2\HitmanVideo.h264" -ovc x264 -x264encopts
    bitrate=9500:threads=auto:frameref=2:bframes=2:deb lock:level=41:direct_pred=auto:direct_pred=autoartitions=p8x8,b8x8:me=hex:me_range=16ubq=5:chroma_me:mixed_refs:bime:trellis=1:weigh
    t_b:b_pyramid:nr=0ass=2 -vf harddup "D:\Hitman Demux2\00002.track_4113.264" -mc 0 -noskip

    When starting the encode I get this:

    MEncoder Sherpya-SVN-r25803-4.2.2 (C) 2000-2008 MPlayer Team
    CPU: Intel(R) Pentium(R) 4 CPU 3.60GHz (Family: 15, Model: 4, Stepping
    CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
    Compiled with runtime CPU detection.
    success: format: 0 data: 0x0 - 0xce911fa
    H264-ES file format detected.
    FPS seems to be: 23.976025
    [V] filefmt:30 fourcc:0x10000005 size:0x0 fps:23.98 ftime:=0.0417
    Opening video filter: [expand osd=1]
    Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
    Opening video filter: [harddup]
    ================================================== ====================
    Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
    Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
    ================================================== ====================
    VDec: vo config request - 1920 x 1080 (preferred colorspace: Planar YV
    VDec: using Planar I420 as output csp (no 1)
    Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
    x264 [info]: using SAR=1/1
    x264 [info]: using cpu capabilities: MMX MMXEXT SSE SSE2 SSE3 Cache64

    Please help.
    Thanx!
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  2. Member
    Join Date
    Dec 2001
    Location
    Sweden
    Search Comp PM
    Jepp, me again...
    Just realized that the resulting video after encoding (takes forever, even with a small sampel of the movie...) ends up with a resolution of 1920x1084...!

    So I tried to apply a crop=1920:1080:0:0, trying to prevent that. However I still end up with 1920x1084...

    What am I doing wrong?
    Please help!
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