VideoHelp Forum
+ Reply to Thread
Results 1 to 16 of 16
Thread
  1. Member
    Join Date
    May 2005
    Location
    Australia-PAL Land
    Search Comp PM
    Mediainfo reports of AmarecTV captures don't show the Color Space of a captured file (for me, at least! ).

    Could somebody please describe how to determine the color space of a file using VDub, AVISynth or some other program?

    Thanks.
    Quote Quote  
  2. Post the mediainfo report (text mode) here.
    Quote Quote  
  3. Captures & Restoration lollo's Avatar
    Join Date
    Jul 2018
    Location
    Italy
    Search Comp PM
    Color space (YUV) and Chroma subsampling (4:2:2) are properly reported.

    Click image for larger version

Name:	Cattura.PNG
Views:	24
Size:	118.8 KB
ID:	76883

    Maybe you refer to BT 601/Rec.601 Color matrix? I ignore how.
    Quote Quote  
  4. Member
    Join Date
    May 2005
    Location
    Australia-PAL Land
    Search Comp PM
    I'm deflated that you think I don't know what I'm doing.

    Amarec file:
    General
    Complete name : H:\Capture Colour Format Tests\GVUSB2 LAGS RGB(20240209-1805).avi
    Format : AVI
    Format/Info : Audio Video Interleave
    Format settings : WaveFormatEx
    File size : 120 MiB
    Duration : 15 s 760 ms
    Overall bit rate : 64.0 Mb/s
    Frame rate : 25.000 FPS

    Video
    ID : 0
    Format : Lagarith
    Codec ID : LAGS
    Duration : 15 s 760 ms
    Bit rate : 59.9 Mb/s
    Width : 720 pixels
    Height : 576 pixels
    Display aspect ratio : 5:4
    Frame rate : 25.000 FPS
    Standard : PAL
    Bits/(Pixel*Frame) : 5.779
    Stream size : 113 MiB (94%)

    Audio
    ID : 1
    Format : PCM
    Format settings : Little / Signed
    Codec ID : 1
    Duration : 15 s 760 ms
    Bit rate mode : Constant
    Bit rate : 1 536 kb/s
    Channel(s) : 2 channels
    Sampling rate : 48.0 kHz
    Bit depth : 16 bits
    Stream size : 2.89 MiB (2%)
    Alignment : Aligned on interleaves
    VDub file:
    General
    Complete name : H:\Capture Colour Format Tests\LAGS VDub Compression Configure set to RGB.avi
    Format : AVI
    Format/Info : Audio Video Interleave
    Format settings : WaveFormatEx
    File size : 46.7 MiB
    Duration : 6 s 480 ms
    Overall bit rate : 60.4 Mb/s
    Frame rate : 25.000 FPS

    Video
    ID : 0
    Format : Lagarith
    Codec ID : LAGS
    Duration : 6 s 480 ms
    Bit rate : 58.9 Mb/s
    Width : 720 pixels
    Height : 576 pixels
    Display aspect ratio : 5:4
    Frame rate : 25.000 FPS
    Standard : PAL
    Color space : YUV
    Chroma subsampling : 4:2:2
    Bit depth : 8 bits
    Bits/(Pixel*Frame) : 5.679
    Stream size : 45.5 MiB (97%)

    Audio
    ID : 1
    Format : PCM
    Format settings : Little / Signed
    Codec ID : 1
    Duration : 6 s 451 ms
    Bit rate mode : Constant
    Bit rate : 1 536 kb/s
    Channel(s) : 2 channels
    Sampling rate : 48.0 kHz
    Bit depth : 16 bits
    Stream size : 1.18 MiB (3%)
    Alignment : Aligned on interleaves
    Interleave, duration : 50 ms (1.26 video frame)
    Interleave, preload duration : 49 ms
    Same with MagicYUV.

    So... Could somebody please describe how to determine the color space of a file using VDub, AVISynth or some other program?
    Quote Quote  
  5. Member
    Join Date
    May 2005
    Location
    Australia-PAL Land
    Search Comp PM
    Arr, found an old Doom9 thread that said use ".info". It gave this report:

    Image
    [Attachment 76887 - Click to enlarge]


    I am now confused . is YUY2 the same as YUV?
    Quote Quote  
  6. Member
    Join Date
    Apr 2018
    Location
    Florida
    Search PM
    If you're using VDub, you can check the color space by going to Video -> Color Depth.
    Quote Quote  
  7. Member
    Join Date
    May 2005
    Location
    Australia-PAL Land
    Search Comp PM
    I'm not sure Color Depth shows the current color space:

    Image
    [Attachment 76888 - Click to enlarge]
    Quote Quote  
  8. Member DB83's Avatar
    Join Date
    Jul 2007
    Location
    United Kingdom
    Search Comp PM
    Am I being studid here ?

    You own screen grabs(via vdub) show the color space as YUV.


    What else do you want ?


    Or, as prevously stated, confuse color space with chromo-subsampling ?
    Quote Quote  
  9. Originally Posted by Alwyn View Post
    So... Could somebody please describe how to determine the color space of a file using VDub, AVISynth or some other program?
    In case a commandline is accepted, try
    Code:
    ffprobe -show_format -show_streams "%~1" |more
    pause
    Quote Quote  
  10. Originally Posted by Alwyn View Post
    Arr, found an old Doom9 thread that said use ".info". It gave this report:

    Image
    [Attachment 76887 - Click to enlarge]


    I am now confused . is YUY2 the same as YUV?
    YUY2 is 8-bit 4:2:2 YUV yes
    https://www.loc.gov/preservation/digital/formats/fdd/fdd000364.shtml

    It doesn't strictly say what variant of YUV it is though, if it's SD video it's most likely the Rec. 601 color matrix (of whatever standard (525 or 625 line) the clip is. I don't think the .avi container or lagarith codec have any way of encoding that metadata however so you would have to determine that by looking at the footage and/or judging by the source.
    Quote Quote  
  11. Member
    Join Date
    May 2005
    Location
    Australia-PAL Land
    Search Comp PM
    I've now tried AVIDemux, which reports YUV and 4:2:2 for my file but it seems as though it's got the colour format (??) wrong; it's showing all my SD VHS captures as BT709.

    @Sharc, prefer not, no offence intended. I just want to quickly open a file, check it then move on. Anyway, how do I run that CLI? In the FFMPEG folder, and where do I put the filename?

    Originally Posted by DB83
    Am I being studid here ?
    RTFQ.
    Hint: "AmarecTV".
    Quote Quote  
  12. Member
    Join Date
    May 2005
    Location
    Australia-PAL Land
    Search Comp PM
    @Oln, thanks. I'll raise AVIDemux's "BT709" (spurious) report on their forum.
    Quote Quote  
  13. Originally Posted by Alwyn View Post
    Anyway, how do I run that CLI? In the FFMPEG folder, and where do I put the filename?
    Many ways.
    For example:
    Copy the text and save it as *whatevername*.cmd (e.g. fileinfo.cmd) on your desktop. Then drag and drop your video file onto that icon on your desktop.
    You should have ffmpeg in the system path; otherwise you have to specify the full path for ffprobe.
    Quote Quote  
  14. Captures & Restoration lollo's Avatar
    Join Date
    Jul 2018
    Location
    Italy
    Search Comp PM
    Originally Posted by Alwyn View Post
    I'm deflated that you think I don't know what I'm doing.
    I did not think that, just providing an example of one of my HuffYUV AmarecTV capture
    Quote Quote  
  15. AVI doesn't flag the color matrix. You have to keep track of it yourself. Some codecs may be able to flag it but software has to be specifically written to support it.
    Quote Quote  
  16. Member
    Join Date
    May 2005
    Location
    Australia-PAL Land
    Search Comp PM
    Thanks jagabo, the reason I asked was that Virtual Dub captures produce the color matrix in Mediainfo but AmarecTV captures don't (for LAGS and M8Y2 at least).
    Quote Quote  



Similar Threads

Visit our sponsor! Try DVDFab and backup Blu-rays!