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  • ffmpeg mkv to mp4 conversion has color tint

    25 novembre 2020, par razvan

    I am recording the screen in a lossless format to have small CPU load

    


    ffmpeg -f gdigrab -framerate 30 -i desktop -vcodec libx264rgb -crf 0 -preset ultrafast rec.mkv
    
ffprobe rec.mkv

    


    Input #0, matroska,webm, from 'vid.mkv':
  Metadata:
    ENCODER         : Lavf58.64.100
  Duration: 00:00:29.67, start: 0.000000, bitrate: 2829 kb/s
    Stream #0:0: Video: h264 (High 4:4:4 Predictive), gbrp(pc, gbr/unknown/unknown, progressive), 1920x1200, 30 fps, 30 tbr, 1k tbn, 60 tbc (default)
    Metadata:
      ENCODER         : Lavc58.112.103 libx264rgb
      DURATION        : 00:00:29.666000000


    


    then I convert/compress it in mp4

    


    ffmpeg -i rec.mkv rec.mp4
    
ffprobe rec.mp4

    


    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'vid.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.64.100
  Duration: 00:00:29.67, start: 0.000000, bitrate: 326 kb/s
    Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), gbrp(tv, gbr/unknown/unknown), 1920x1200, 248 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)


    


    but the resulting mp4 it is tinted by green and pink color (white areas are tinted green and dark areas are tinted pink)

    


    I have the same results on windows and ubuntu.
I am using latest git versions.

    


    Any idea how to properly convert this to mp4 ?

    


  • Convert 10bit Apple pro res 422 HQ video mov to png without changing color format using ffmpeg only 2 png created [closed]

    15 janvier 2024, par Mark Brady

    I am looking to convert a 'Formats : 10-Bit ProRes 422 (2K)' .MOV to PNGs, I saw this post and got the following information / questiosn.

    


    This is form this post form awhile ago.
Convert 10bit Apple pro res 422 HQ video mov to png without changing color format using ffmpeg

    


    I ran this command
ffmpeg -i "Hyper.mov" -vf fps=1 -pix_fmt rgba -sws_flags +accurate_rnd+bitexact+full_chroma_int "out-%04d.png" on a short mov in the format of Formats : 10-Bit ProRes 422 (2K)

    


    From this site, it is a hyper warp mov (effect), I want to convert into either pngs or a gif or a flipbook of 8x8 (which is prob to small to do it all, but maybe a few 8x8x) end goal is getting the effect in Roblox

    


    The mov is from this site
https://www.actionvfx.com/collections/free-blasters-stock-footage/8798

    


    The hyper one.

    


    When I did the command it only generated 2 images, perhaps the start frame and the end.

    


    Does anyone know why it only did 2 images ?

    


    [enter image description here](https://i.stack.imgur.com/REDDx.jpg)

    


    In the post I saw this, it has 'without changing color format ', which I do not know if I need that... just trying to get the effect mov into png or a flipbook

    


    Thanks

    


    Tried the above syntax and expecting it to generate a bunch of pngs, not just 2.

    


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