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  1. Ha all.

    Is possible get a file with Luma value frame by frame from a clip?

    Thanks in advance.
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  2. Regular ffmpeg can do this trough
    Code:
    ffmpeg -v quiet -stats -i "%1" -vf:? "signalstats,metadata=print:file='v.%~n1.txt'"
    - have no Apple so don't know if this is possible by ffmpegx.
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  3. Hi Pandy

    In this moment i'm working with PC

    With:
    ffmpeg -v warning -stats -i 59.mp4 -vf "signalstats,metadata=print:file='v.%~n1.txt'"

    program say me:
    Trailing options were found on the commandline.
    At least one output file must be specified
    Last edited by barabba2005; 17th Nov 2017 at 08:25.
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  4. Originally Posted by barabba2005 View Post
    Hi Pandy

    In this moment i'm working with PC

    With:
    ffmpeg -v warning -stats -i 59.mp4 -vf "signalstats,metadata=print:file='v.%~n1.txt'"

    program say me:
    Trailing options were found on the commandline.
    At least one output file must be specified
    Try something like:

    Code:
    @setlocal
    @set name=59.mp4
    @ffmpeg -v warning -stats -i "%name%" -vf:? "signalstats,metadata=print:file='v.%name%.txt'"
    @endlocal
    @exit
    or explicitly use name in output result like:

    Code:
    @ffmpeg -v warning -stats -i "59.mp4" -vf:? "signalstats,metadata=print:file='v.59.mp4.txt'"
    You receive error due replacing argument for batch with real name but remain part of script is not changed to so filename is unknown - no valid name at the output - i usually avoid hardcoding filename in script and provide filename as argument to script - assuming that script is named ffvideostat.cmd then i call my script like this ffvideostat "myvideofilename.mp4" and result will use name and extenssion like this v.myvideofilename.mp4.txt


    btw in future try to use different forum - ffmpegx is forum focused on particular application (ffmpegx which is not popular in Windows world as much as on Apple world).
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  5. OK

    Unfortunately it doesn't write TXT file

    Do you know a Windows forum with a lot experience like this?

    Thanks a lot
    Last edited by barabba2005; 17th Nov 2017 at 09:18.
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  6. Search videohelp where ffmpeg questions are solved, general discussion looks OK IMHO.

    And my fault. please add
    Code:
    -f null -
    at the end

    whole command should look like this
    Code:
    @ffmpeg -v warning -stats -i "59.mp4" -vf:? "signalstats,metadata=print:file='v.59.mp4.txt'" -f null -
    sorry for too quick copy&paste - this was my original batch and i simply forget to tell ffmpeg output - apologies.

    Code:
    @ffmpeg -v quiet -stats -i "%1" -vf:? "signalstats,metadata=print:file='v.%~n1.txt'" -af:? "astats=metadata=1:reset=1,ametadata=print:file='a.%~n1.txt'" -f null -
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  7. Thanks a lot.
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