why don't you use the manifest switch instead which will download the highest quality by default.
Code:
php AdobeHDS.php --manifest "http://nordond22c-f.akamaihd.net/z/wo/open/99/992ceec0cc38383bde66ca0a1690678e62a992cd/992ceec0cc38383bde66ca0a1690678e62a992cd_,141,316,563,1266,2250,.mp4.csmil/manifest.f4m?hdcore=2.7.6" --delete
Code:
KSV Adobe HDS Downloader
Processing manifest info....
Quality Selection:
Available: 2399 1416 714 388 213
Selected : 2399
Downloading 8/243 fragments