Body: <p>I am using FFMPEG-Kit for iOS BUT this issue applies to all releases of FFMPEG-Kit... within my command I run <code>[1:v]format=argb,geq=r='r(X,Y)':a='0.5*alpha(X,Y)'[withOpacitySet]</code> but it does not work, if I run the command without that it runs fine...</p>
  <p>Is it the commas? The quotation marks?</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2022-08-17T00:49:05.617Z
Comments.Text: Welcome! What "does not work"? Do you get an error? Does it not generate the output you expect? (Also, it looks like you may have posted this question to more than one SE site. That is generally frowned upon.)
Comments.UserDisplayName: Michael Liebman
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2022-08-17T01:01:10.997Z
Comments.Text: Hello @MichaelLiebman the error is not detailed as it generates from the library, mainly, I have come to the safe conclusion that the library will not take that syntax since my terminal does accept it. I did post this same question on StackOverflow, I did not know it was frowned upon, I just wanted to reach more people. If it is against the TOS I have no problem on taking it down. The error is simply `Error creating video...`... nice... lol. I know the issue is in the line of FFMPEG posted though, as if removed, it runs successfully.
Comments.UserDisplayName: Xavier Font
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2022-08-17T21:41:23.627Z
Comments.Text: Multiple posts don't violate any policy, they are just considered bad etiquette since the answers don't share across the sites. Your question ends up helping less people in the end. Sorry I don't have any answers on your problem since the library, as you said, really everything clear. ;)
Comments.UserDisplayName: Michael Liebman
Tags: <ffmpeg>
Title: Run FFMPEG-Kit command with commas and single quotes
UserDisplayName: Xavier Font
ThreadText: # Run FFMPEG-Kit command with commas and single quotes
  
  (Asked by: username_0 on 2022-08-17)
  
  I am using FFMPEG-Kit for iOS BUT this issue applies to all releases of FFMPEG-Kit... within my command I run `[1:v]format=argb,geq=r='r(X,Y)':a='0.5*alpha(X,Y)'[withOpacitySet]` but it does not work, if I run the command without that it runs fine...
  
  Is it the commas? The quotation marks?
  
  **Tags:** ffmpeg
  
  > **Comments:**
  > **username_1**: Welcome! What "does not work"? Do you get an error? Does it not generate the output you expect? (Also, it looks like you may have posted this question to more than one SE site. That is generally frowned upon.)  
  > **username_0**: Hello @username_1 the error is not detailed as it generates from the library, mainly, I have come to the safe conclusion that the library will not take that syntax since my terminal does accept it. I did post this same question on StackOverflow, I did not know it was frowned upon, I just wanted to reach more people. If it is against the TOS I have no problem on taking it down. The error is simply `Error creating video...`... nice... lol. I know the issue is in the line of FFMPEG posted though, as if removed, it runs successfully.  
  > **username_1**: Multiple posts don't violate any policy, they are just considered bad etiquette since the answers don't share across the sites. Your question ends up helping less people in the end. Sorry I don't have any answers on your problem since the library, as you said, really everything clear. ;)  
  
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  ## 0 answers
  
  