Common TMPGEnc problems, solutions and tips
If you get an error message when opening like file unsupported or can not open or is not supported or you get an empty(black) video preview window or the video look wierd in the video preview window like green or purple or pink
Try first to change the directshow codec reader priority settings in TMPGEnc under Option->Environmental settings->VFAPI plug-in and right click on the DirectShow Multimedia File Reader and increase the priority to 2 or to the top of the plugin-list and try reopen the video. If that does not help be sure that you have installed DivX or XviD or MPG2 or DV Codecs, read here how to identify what codecs you need.

If TMPGEnc freezes or crashes when converting or you receive errors such as Unexpected decimal point calculation Illegal floating decimal point calculation order Write error occured at address 77F83AED of module "ntdlll.dll"
Try first to change the directshow codec reader priority settings in TMPGEnc under Option->Environmental settings->VFAPI plug-in and right click on the DirectShow Multimedia File Reader and increase the priority to 2 or to the top of the plugin-list and try reopen the video. If that doesn't help try repair/fix the video source (Downloaded video files could have bad/corrupt video frames that could cause crashes).

If TMPGEnc says Can't load P3Package.dll or P4Package.dll?
Be sure that you have exctracted all files in the tmpgenc download zip file to a folder then go to that folder and start tmpgenc.exe or make a shortcut to tmpgenc.exe and it should work. Or try copy the p3package.dll and p4package.dll to your windows\system32 folder and restart TMPGEnc.

If you get Audio errors, Audio out of sync problems or No Audio at all
Try to convert the audio to WAV audio before converting and use the WAV as audio source. (TMPGEnc can't handle VBR MP3 and AC3 that well)

If TMPGEnc says that the video time / runtime is way too long TMPGEnc keeps encoding after the end of video with only a black screen
Try change the directshow reader priority, in TMPGEnc under Option->Environmental settings->VFAPI plug-in and right click on the DirectShow Multimedia File Reader and increase the priority to 2 or to the top of the plugin-list and reopen the video. If that doesn't help try convert the audio to WAV audio before converting and use the wav as audio source. And if all that didn't help you can always use the source range to select exact what to encode, under Settings->Advanced in TMPGEnc.

How do I encode several video files to one MPG video file? Can I open several video files with TMPGenc?
In TMPGenc under Option-> Environmental setting-> General, check the box for "Open sequence files as a movie". And then rename your movie source files like video1.avi, video2.avi, video3.avi (same name but with a number at the end) and all will be opened at once with TMPGEnc. Note that all files must have same video and audio settings.

How do I convert video with AC3 audio?
Install the AC3 ACM Compressor and you can convert AC3 audio. If you are making DVD you don't have to convert the AC3 audio at all, you can leave it as AC3 and only convert the video, read this guide.

I cannot change any settings The settings are greyed out after I open a template
Load your VCD,SVCD or DVD template or use the wizard as usual, then load the unlock template that you find in the extra folder in the templates folders. Now you should be able to change every setting. You can also right click on the setting word and choose Unlock.

TMPGEnc takes away the widescreen. The video looks stretched.
Be sure to select under Settings->Advanced under Video Arange Method: Full Screen(Keep aspect ratio).

If you have trouble open WMV files
Try and rename it to .asf and open it. If that doesn't help try to change the directshow codec reader priority settings in TMPGEnc under Option->Environmental settings->VFAPI plug-in and right click on the DirectShow Multimedia File Reader and increase the priority to 2 or to the top of the plugin-list and try open the video.

If you have problem open DV AVI files
First install a DV Codec and be sure that you can play DV AVI with Media Player. Then try change the directshow reader priority, in TMPGEnc under Option->Environmental settings->VFAPI plug-in and right click on the DirectShow Multimedia File Reader and increase the priority to 2 or to the top of the plugin-list and reopen the video. If that doesn't help you may need to convert the DV to Canopus reference DV (TMPGEnc do not support Microsoft DV AVI 1).

I want a fullscreen movie from a widescreen movie
If the source is in WideScreen and you want it to be in FullScreen you just select under Settings->Advanced under Video Arange Method: No margin(keep aspect ratio) and TMPGEnc will then cut left and right so it will fit FullScreen.

If you have trouble open MPG/MPEG2/SVCD/DVD files
Install the PowerDVD 4+ demo and use TMPGEnc 2.57+ and you should be able to open MPEG2 or install the MPEG2 plugin for TMPGEnc or use this DVD2AVI method (note DVD2AVI do not convert the MPEG2 to AVI it only frameserves it to TMPGEnc)

If you have problem open DV video, DC30+,MJPEG captured video or any AVI VFW
Then try to change the settings in TMPGEnc under Option->Environmental settings->VFAPI plug-in and right click on the AVI VFW and increase the priority to 2 and try reopen the video.

Improve the audio quality
You can use an external audio encoder because TMPGEncs own audio encoder is not the best. One of the best audio mpeg layer 2 encoders is tooLame, download and extract all files to a folder. In TMPGEnc under Options->Environmental Settings->External tools select Layer 2 and browse for the toolame.exe.
 See Also:

 How to convert AVI to MPEG, AVI to MPEG-2 using free converter ?