I've noticed that you provided some information related to YouTube IDs in the README, so I'll give you some more info about these:
YouTube video IDs are encrypted with a 3DES key and used to be sequentially incremented until 2017.
Source: https://news.ycombinator.com/item?id=25302558
If we could somehow manage to retrieve the key, then videos uploaded prior to 2017 could have their IDs converted back to a number.
In the past, my_videos_upload had the video ID specified in the "v" parameter as the actual video number hidden inside the HTML source if you search for "parentVideoId".
Example: https://web.archive.org/web/20100606111233/http://upload.youtube.com/my_videos_upload?v=xpsclE_VjRc
YouTube video IDs were slightly different in 2005:
https://web.archive.org/web/20060529085906/http://www.youtube.com/watch.php?v=j0IR9bwPfls (example of legacy 2005 URL; the modern video ID, LeAltgu_pbM, can be seen in the URL section of the page)
This was likely changed during the migration from PHP to Python and is most likely just an endianness change of the integers that are being encrypted.
Not only were these IDs used for videos, but they were also used for other things such as groups and users.
Group example (legacy 2005 ID; hover over one of the "Flag this Group" links to see the ID): https://web.archive.org/web/20060203064707/http://www.youtube.com/group/bushsucks
Group example (modern ID; hover over one of the "Flag this Group" links to see the ID): https://web.archive.org/web/20060412023833/http://www.youtube.com/group/bushsucks
User example (modern ID; hover over the "Add as Friend" link to see the ID): https://web.archive.org/web/20071210133555/http://www.youtube.com/user/jawed
I have compiled a list of the first 37 IDs of YouTube's ID system (with its legacy 2005 version in parentheses if available):
jNQXAC9IVRw (ZEM5VxV0b_c)
LeAltgu_pbM (j0IR9bwPfls)
nGzAI5pLbMY (3ecwdIm2QCE)
__WLXNpu6u8 (hmicbxY99I8)
Zx4DA4xg9IM
MykmTeTiooA (lzj98rpCcJc)
iJLXf_7B368 (iUKrlLBZQbs)
UgY69lf0UCE
ebKlgRwnpFY (18NOnWqF63c)
aqsRo9JYx5M (mkcfZQ7JPXE)
XgM4c0oGu94
aBfUFr9SBY0 (3_-tvadkXMs)
qxZb8hr8fu8
0Qj_byWfaX0
j_S84EfePTc
IgaVi5i4axU
E_XOxWMm6bU
-wsNFmLGN6o
HvnTts3k8Fg
jpQSKxsnbc0 (LTnHMRwRLrA)
urH3q0Wn23U
oorjVv_HDVs
nISYu77cYpo
4KWKYZN7znU
ZUhUjN8MMfo
assC--885ys
lLlBie7ifdg
-UV0BmDAq1c
-6hg9XPX6_c
UR1y8kP-vh0
ZxSpdmexrRA
Yr2jPpMmHz4
zgLGHXYYsFM
h7zjCPVwIaU
jwIToyFs2Lc (JRNZJ2_fO7Q)
8hKqnBiQngA (77QAKf9RGIk)
3RXklWrtBNk
I've noticed that you provided some information related to YouTube IDs in the README, so I'll give you some more info about these:
YouTube video IDs are encrypted with a 3DES key and used to be sequentially incremented until 2017.
Source: https://news.ycombinator.com/item?id=25302558
If we could somehow manage to retrieve the key, then videos uploaded prior to 2017 could have their IDs converted back to a number.
In the past, my_videos_upload had the video ID specified in the "v" parameter as the actual video number hidden inside the HTML source if you search for "parentVideoId".
Example: https://web.archive.org/web/20100606111233/http://upload.youtube.com/my_videos_upload?v=xpsclE_VjRc
YouTube video IDs were slightly different in 2005:
https://web.archive.org/web/20060529085906/http://www.youtube.com/watch.php?v=j0IR9bwPfls (example of legacy 2005 URL; the modern video ID, LeAltgu_pbM, can be seen in the URL section of the page)
This was likely changed during the migration from PHP to Python and is most likely just an endianness change of the integers that are being encrypted.
Not only were these IDs used for videos, but they were also used for other things such as groups and users.
Group example (legacy 2005 ID; hover over one of the "Flag this Group" links to see the ID): https://web.archive.org/web/20060203064707/http://www.youtube.com/group/bushsucks
Group example (modern ID; hover over one of the "Flag this Group" links to see the ID): https://web.archive.org/web/20060412023833/http://www.youtube.com/group/bushsucks
User example (modern ID; hover over the "Add as Friend" link to see the ID): https://web.archive.org/web/20071210133555/http://www.youtube.com/user/jawed
I have compiled a list of the first 37 IDs of YouTube's ID system (with its legacy 2005 version in parentheses if available):
jNQXAC9IVRw (ZEM5VxV0b_c)
LeAltgu_pbM (j0IR9bwPfls)
nGzAI5pLbMY (3ecwdIm2QCE)
__WLXNpu6u8 (hmicbxY99I8)
Zx4DA4xg9IM
MykmTeTiooA (lzj98rpCcJc)
iJLXf_7B368 (iUKrlLBZQbs)
UgY69lf0UCE
ebKlgRwnpFY (18NOnWqF63c)
aqsRo9JYx5M (mkcfZQ7JPXE)
XgM4c0oGu94
aBfUFr9SBY0 (3_-tvadkXMs)
qxZb8hr8fu8
0Qj_byWfaX0
j_S84EfePTc
IgaVi5i4axU
E_XOxWMm6bU
-wsNFmLGN6o
HvnTts3k8Fg
jpQSKxsnbc0 (LTnHMRwRLrA)
urH3q0Wn23U
oorjVv_HDVs
nISYu77cYpo
4KWKYZN7znU
ZUhUjN8MMfo
assC--885ys
lLlBie7ifdg
-UV0BmDAq1c
-6hg9XPX6_c
UR1y8kP-vh0
ZxSpdmexrRA
Yr2jPpMmHz4
zgLGHXYYsFM
h7zjCPVwIaU
jwIToyFs2Lc (JRNZJ2_fO7Q)
8hKqnBiQngA (77QAKf9RGIk)
3RXklWrtBNk