<human>: **Context:**  A machinima is a cinema that uses video games as the film and the rest.  

Now the video game I've used was Halo; there are 2 different modes called Forge which could edit the map, so what I have done was edit the map to place markers for my actors to move around and such.  Now I've thought it wouldn't show up when replaying the "game" I've just played in "theatre mode" (a mode that replays the game obviously and you can change camera angles and such).  So I've kept on going on with this belief until some of my friends point it out; none have done anything big and I disregarded them for that.

So I've been filming my "actors" in the video game for like 6 hours today and about 3 hours yesterday.  At the end today; I've decided to replay and I've noticed the markers.  I was so torn up...  not only if I want to continue to finish this I would have to get everybody back and redo the shots and everything.  However, it will be much harder without any markers to direct people... mind that getting people would be so difficult due to scheduling and such.  It was such an annoying process because of people not prioritizing the meetings and being a bunch of pricks for being late and not showing up at all...

Now remember that I have to organize everything and such; also the markers I've placed in Forge took me hours to complete.  So now that's all in the drain... and if I want to complete it to my satisfaction I would have to put in about another 12 hours+ again... that ain't fun and I feel like giving up straight away...

This was suppose to be done in Custom Games initially to prevent any markers to be shown; and such.  

NOTE - Basically I had to deal with annoying people who disregards schedules and meetings; also trying to organize everything to get certain actors online and to film with me... that is so gruesome.

Basically imagine working on something for extreme hours of time and imagine all of that work was useless/can't be used due to some factor.  That's what's happening.

Can you summarize the given text in a few sentences?
<bot>: Puts in about 12+ hours of time into filming, and organizing; all the footage is basically useless and have to restart everything to continue the film properly.