Help Downloading this Stream in HD

[HoHey22]

Hello, I'm new to this forum, I wish to download this stream http://aztecalive-lh.akamaihd.net/z/...p-3.1.0.43.124
http://tvazvod459791 from http://eltrece.mx (Just click on the pink "En VIVO Ahora" button and it will play the latest show, and go on to the next, this is live TV, otherwise to access the live tv just go to eltrce.mx and click on the "En VIVO Ahora" button and it will show the live TV) (The stream is country restricted, so I have to use a proxy like SoftEtherVPN or FlyVPN to watch it) (You can download the stream via the manifest without restriction)
It downloads, but now in the quality I want, I have the AdobeHDS.php script. On the web its at 1.6 MBs quality which i think is 720p. But downloaded, in Freemake video converter it shows 833 kbps which is NOT what I want and shows terrible quality in videos when there's a demand for a higher bitrate. Such as a concert with tons of lights and such. On YouTube I find videos in 720p or higher of the same program I wish to record, and its at a reasonable high quality, which is what I'm looking for, but unfortunately cannot.
The channel I wish to record is called "El Trece" or "Azteca Trece" from Mexico, not Argentina. If anyone can help me find pre-recorded TV from this channel somewhere, or full length episodes from programs on this channel, I would greatly appreciate it. Or another way of capturing this f4m stream.
PHP runs with these arguments
php AdobeHDS.php --manifest "http://aztecalive-lh.akamaihd.net/z/0oxnvzh8a_1@175671/manifest.f4m?g=TBVSGQUAPBOP&hdcore=3.1.0&plugin=aa sp-3.1.0.43.124
http://tvazvod459791" --quality high --parallel 4 --delete --outfile "VIDEO.flv"