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| You should write LibraryLink paclet using https://github.com/WolframResearch/LibraryLinkUtilities. Demo paclet: https://github.com/WolframResearch/LibraryLinkUtilities/tree/master/tests/Demo |
| This is what I get when I evaluate Video for the first time in 13.0 for Windows: ![Install FFmpeg][1] [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=ffmpeg13.0.png&userId=32329 |
| Thank you for reporting. We will try to fix this issue in the next version. Meanwhile, you can use `AnimationVideo` introduced in 12.3. |
| Or ``` Range[100, 0, -1] ``` |
| This is how you should use it: In[1]:= img = RandomImage[1, {200, 300}, "Byte", ColorSpace -> "RGB"]; In[2]:= FileSize[Export["out.jp2", img, "ImageEncoding" -> "JPEG2000", CompressionLevel -> #]] & /@ {0.2, 0.5, 0.8} ... |
| Using ColorSeparate / ColorCombine is about 4x faster than your third solution: In[1]:= testImage = Image[ExampleData[{"TestImage", "Mandrill"}], "Real32"]; In[2]:= RepeatedTiming[ r1 = ColorConvert[ ImageApply[ ... |
| PNG uses different compression algorithm than JPEG2000, but here are some ideas that you can try. Input file: In[1]:= file = "ExampleData/girl.jp2"; In[2]:= i = Import[file]; In[3]:= FileSize[FindFile[file]] Out[3]=... |
| Conversion of `Graphics` to `Image` usually requires a rasterization and unfortunately it is the case here. `Image` constructor internally calls `Rasterize` when the input argument is a `Graphics` object. The only exception is... |
| This memory leak will be fixed in version 12.0. In 11.3 you can use animated GIF or PNG. |
| QuickTime.exe was removed in version 11.3.0 for Windows, but ```Internal`$VideoEncodings``` should still work correctly and should return `{"H264"}`. This bug will be fixed in version 12.0. |