Example code:
const subprocess = spawn("C:\\Windows\\aria2c.EXE", [ '--file-allocation=none', '--header="Cookie:DRIVE_STREAM=pLN8Qew1jVg;"', "-c", "-j5", "-d", "C:\\Users\\Administrator", "-x5", "-o", "downloaded."+b+".mp4", linkarr[0]["link"] ], { detached: true, stdio: [ 'ignore', out, err ] });
This process run unsucessfully, cause the quotes is escaped. So, you must use option: windowsVerbatimArguments
const subprocess = spawn("C:\\Windows\\aria2c.EXE", [ '--file-allocation=none', '--header="Cookie:DRIVE_STREAM=pLN8Qew1jVg;"', "-c", "-j5", "-d", "C:\\Users\\Administrator", "-x5", "-o", "downloaded."+b+".mp4", linkarr[0]["link"] ], { detached: true, windowsVerbatimArguments: true, stdio: [ 'ignore', out, err ] });