What is this modified version of Hanyu Pinyin called? I am new to Chinese, have been studying it for almost a year or so. I noticed that a lot of Chinese music videos have subtitles in a modified version of pinyin that has many distinct features from commonly used Hanyu Pinyin. Some of these features include:


Initial consonants that would be voiced in English (which represent unvoiced, unaspirated consonants in Mandarin) are replaced with their unvoiced counterparts. (Ex. 'b-' --> 'p-', 'd-' --> 't-', 'g-' --> 'k-')
Those that are already aspirated are followed by an h (Ex. 'p-' --> 'ph-', 'c-' --> 'ch-')
In many cases, the initial 'r-' is changed (Ex. 如 ru --> lu, 讓 rang --> jang)
'-ng' endings sometimes change to '-n' (Ex. 冷 leng --> len while 窗 chuang stays the same)
'x-' and 'sh-' become 's-', and 'zh-', 'z-' and 'j-' become 'c-'. Some of these initials are followed by an i (Ex. 上 shang --> siang)
'-ao' becomes '-au', and other vowel final changes (Ex. 時 shi --> se, 麼 me --> mo, 自 zi --> ce)


Here is a video which has subtitles in this modified version of Hanyu Pinyin. 

https://www.youtube.com/watch?v=qunYXMXn5oo

I have researched different Mandarin romanization methods, but this does not come up. Does anyone know what this version is called and where it is used in the world, as well as important features I missed? If so, please respond.
Isn't this just an informal romanisation method to make it easier for Malay/Indonesian speakers? 

In those languages:


c is pronounced /c/, so it can be used to approximate z/zh
k/t/p are unaspirated, so h needs to be added to indicate aspiration
au is /aw/, same as mandarin ao
There isn't /ɨ/ as in Mandarin but /ə/ which sounds close to it, and /ə/ is written e.


This is probably just the work of one person transcribing the music for an Indonesian audience. Pinyin has some weird spelling conventions so these adjustments help Indonesian speakers sing Mandarin songs better.

You can see this a lot with Cantonese/Hokkien songs. Mandarin is much much better in this regard.