VideoHelp Forum

Our website is made possible by displaying online advertisements to our visitors.
Please consider supporting us by disabling your ad blocker or buy PlayOn and record Netflix! :)
+ Reply to Thread
Results 1 to 6 of 6
  1. Hello cats,

    please do you know a plugin for VLC or other program that do Waveform/Vectorscope on a video file?


    ps. this 2 files are bars from my camera in Hd mode:

    and SD mode:
    Quote Quote  
  2. Most decent NLE's will have them

    vdub color tools plugin by trevlac

    avisynth histogram , histogram("color")

    ffmpeg/ffplay -vf histogram, either colors, waveform, levels modes
    Quote Quote  
  3. mm thanks, but how is the commandline to generate a video file with "overimpressed" vector/waveform?
    Quote Quote  
  4. Code:
    ffplay -i "barsSD.MXF" -vf "split[a][b];[a]format=gray,histogram=mode=waveform:waveform_mode=column,vflip,split[c][d];[b]pad=iw:ih+256[padded];[c]geq=g=1:b=1[red];[d]geq=r=1:b=1,crop=in_w:220:0:16[mid];[red][mid]overlay=0:16[wave];[padded][wave]overlay=0:H-h"
    Or just use a NLE , probably easier
    Quote Quote  
  5. mmm I think is beautiful with ffmpeg, only I cannot see the "scale" in volt, for example my analog waveform indicate the 1Vp/p on the blank bar, whit this commandline seems similar but have not the scale that indicate level in millivolt, is there a way to see it? thanks
    Quote Quote  
  6. Not sure how to display that in ffplay with mV (PAL) , IRE (NTSC) . Premiere's waveform can display that

    Most digital waveform tend to use 0-255 scale now, not analog units
    Quote Quote