<div dir="ltr">Thanks for the reply, Mike. The png is in fact fully opaque. This is the link to one of the png's I used that is all green that shows up as purple in chromakey (<a href="https://1drv.ms/u/s!AjoGLBAOTKwok4sEsN_oFHpyx8QhCA" style="font-family:Calibri;font-size:11pt">https://1drv.ms/u/s!AjoGLBAOTKwok4sEsN_oFHpyx8QhCA</a>). If there is a sample png and/or mp4 that works that I can look at, I can compare and see the differences.<br><div><p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt">    Alpha:</p><p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt">      min: 255  (1)</p><p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt">      max: 255 (1)</p><p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt">      mean: 255 (1)</p></div><div><p style="margin:0in 0in 0in 0.75in;font-family:Menlo;font-size:13.5pt;color:black"><span style="font-family:Calibri;font-size:11pt;color:rgb(34,34,34)">%identify -verbose leaf_1280_2.png </span></p><div>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt">Image:
leaf_1280_2.png</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Format: PNG (Portable Network Graphics)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Mime type: image/png</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Class: DirectClass</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Geometry: 1280x616+0+0</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Resolution: 118.11x118.11</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Print size: 10.8374x5.21548</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Units: PixelsPerCentimeter</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Colorspace: sRGB</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Type: TrueColorAlpha</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Base type: Undefined</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Endianess: Undefined</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Depth: 8-bit</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Channel depth:</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  Red: 8-bit</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  Green: 8-bit</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  Blue: 8-bit</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  Alpha: 1-bit</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Channel statistics:</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  Pixels: 788480</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  Red:</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    min: 0  (0)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    max: 232 (0.909804)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    mean: 53.3939 (0.209388)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    standard deviation: 35.179 (0.137957)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    kurtosis: -0.222281</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    skewness: 0.380167</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    entropy: 0.873176</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  Green:</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    min: 3  (0.0117647)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    max: 255 (1)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    mean: 143.551 (0.562945)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    standard deviation: 47.2475 (0.185284)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    kurtosis: -0.708943</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    skewness: -0.134383</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    entropy: 0.947618</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  Blue:</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    min: 0  (0)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    max: 229 (0.898039)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    mean: 12.233 (0.0479725)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    standard deviation: 14.8046 (0.0580573)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    kurtosis: 12.2167</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    skewness: 2.40529</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    entropy: 0.615689</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  Alpha:</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    min: 255  (1)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    max: 255 (1)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    mean: 255 (1)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    standard deviation: 0 (0)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    kurtosis: 8.192e+51</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    skewness: 1e+36</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    entropy: 0</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Image statistics:</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  Overall:</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    min: 0  (0)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    max: 255 (1)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    mean: 116.044 (0.455076)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    standard deviation: 24.3078 (0.0953246)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    kurtosis: -1.46953</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    skewness: 0.326922</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
    entropy: 0.609121</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Rendering intent: Perceptual</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Gamma: 0.45455</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Chromaticity:</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  red primary: (0.64,0.33)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  green primary: (0.3,0.6)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  blue primary: (0.15,0.06)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  white point: (0.3127,0.329)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Matte color: grey74</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Background color: white</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Border color: srgb(223,223,223)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Transparent color: none</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Interlace: None</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Intensity: Undefined</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Compose: Over</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Page geometry: 1280x616+0+0</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Dispose: Undefined</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Iterations: 0</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Compression: Zip</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Orientation: Undefined</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Properties:</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  date:create: 2019-03-18T18:29:52-05:00</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  date:modify: 2019-03-18T18:29:52-05:00</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  png:bKGD: chunk was found (see Background color, above)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  png:cHRM: chunk was found (see Chromaticity, above)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  png:gAMA: gamma=0.45455 (See Gamma, above)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  png:IHDR.bit-depth-orig: 8</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  png:IHDR.bit_depth: 8</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  png:IHDR.color-type-orig: 6</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  png:IHDR.color_type: 6 (RGBA)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  png:IHDR.interlace_method: 0 (Not interlaced)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  png:IHDR.width,height: 1280, 616</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  png:pHYs: x_res=11811, y_res=11811, units=1</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  png:sRGB: intent=0 (Perceptual Intent)</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  png:text: 2 tEXt/zTXt/iTXt chunks were found</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  png:tIME: 2019-03-18T13:27:15Z</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  signature:
c461e759eb2ea41bf96aa66d74a9c3a21e5f2a23c5d0003e56de23bbdde8eddb</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Artifacts:</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
  verbose: true</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Tainted: False</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Filesize: 1.84901MiB</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Number pixels: 788480</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Pixels per second: 15.7696MP</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
User time: 0.070u</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Elapsed time: 0:01.049</p>

<p style="margin:0in 0in 0in 0.75in;font-family:Calibri;font-size:11pt"> 
Version: ImageMagick 7.0.8-33 Q16 x86_64 2019-03-13 <a href="https://imagemagick.org">https://imagemagick.org</a></p></div><br></div></div>