The tools you will need are:
Let's start by installing all those tools. You can install meGUI, Avisynth through the installer. Next you would need to extract FFMPEGSource into Avisynth/Plugins Folder. Extract avi_tc_package wherever you want it to be.
Since Avisynth is installed you should be able to create a new .avs (Avisynth Script) by right clicking anywhere then hovering your mouse over "New" and clicking on Avisynth Script. After that's done and you succesfully created that .avs, you can open it in Wordpad/Notepad.
Save and close. You can now open the avs using Media Player Classic to see if it works or not. If it doesn't work it will give you an error message. If it does work you now have your Timecodes exported.
For the next Steps you will need meGUI.
Open up meGUI it will ask you if you'd like to update, well of course you want to. After updating you can select your avs in meGUI and the codec/option's. After that just click on Enqueue and switch over and encode it. This will take a while depending on the options and System.
Once the Encode is done you can view it, but it won't have Audio. So the next Step would be to get the Audio from the mp4, for that open meGUI again and put the MP4 on the AudioInput box. Put your options and click on Enqueue again. Keep the Audio somewhere, you will need it later.
Move to your avi_tc_package folder (wherever you extracted it) and open up tc-GUI.exe, hover over to the 2nd Tab which says tc2cfr. Input Video and Timecodes, pick your Output name/folder and Run. Don't mess with the Output AVI FPS.
Congratz you just created a 120 FPS(Fake Rate) Xvid encode. All that's left is to get the Audio in the Video. meGUI it is again. Go to "Tools->Muxer->AVI Muxer", input Video, Audio and Output filename, again don't mess with the options. With that last step. It's done. You succesfully converted our release into an Xvid AVI.
Don't e-mail us saying this isn't working, if it isn't you done it wrong.
P.S. If the Xvid is blocky adding deblock(Strenght) in the avs file will help, just insert a number where i put Strenght. You have to experiment with it.