Due to several open posts for videos with alpha channel using the lagarith codec, I have been looking at more options and I just found out about the Grass Valley HQX codec, which supports the alpha channel and with a very good result and with almost half the weight of the codec lagarith, it can be used with the video editor that you normally use, such as Premiere, After effects, vegas, virtualdub, etc.
https://www.edius.net/hqx.html
Problem Pte does not support the Grass Valley HQX codec, do you think it would be worth it?