i dont think there is a tool like that for videos on youtube. you could use slushys retime tool to time each load and then add them together or download the video and use the manual loadremover tool someone from the nsmbw community made
seems like you can get the old channel url from copying the link from the "my channel button" you get after clicking your icon in the top right
instead of "user/" you need to put "@". or in case you had enough subscribers for a custom url you can do "c/[yoururl]"
for audio just make sure your audio bitrate isnt too low i dont think there is much else to do for audio. bandicam is 10 minutes. im not even sure if fraps has a free option.
you should contact the games moderators and if you cant get ahold of them then make a mod removal request in the support hub (youll become the moderator)
you can either download a timer on your phone or use one.livesplit.org the web version of livesplit. you cant have the timer on your video/stream unless you get a pc and a capture card
they shouldnt unless you say you dont want to keep moderating. your story just makes me think that one guy really wanted to be the moderator...
everytime ive had a game with an inactive runner it has always been that either they dont respond at all or their linked socials dont exist anymore.
id say in very active games its fine if runs stay unverified longer than the three weeks. doesnt minecraft constantly have like 1000 plus runs waiting? i think the three week rule exist more so that leaderboards dont stop and that runs would get verified so i personally see no problem in your case. its also not like if the three weeks goes by that the mods would instantly be unmodded or something it needs a manual report from someone who has contacted (or attempted to) the mods and if they deny verifying runs or you cant get in contact only then would something happen