problems with avc to mpeg-2 in tmpgenc xpress 4.0 - more than 3x run time?

[NoFace]

Hi.
I'm trying to convert a .mkv file to dvd. I can extract the components of the .mkv, and am left with a .h264 video stream, a .ac3 audio stream, and a subtitle file.
Here's a screenshot of what MediaInfo has to say about the file.
http://www.etherealryvius.com/pissingmeoff.html
When I import the .h264 stream into Tmpgenc Xpress 4.0, it lists the file run time at 5hrs., 14+mins., instead of the 1 hr., 37min. actual run time, giving me about a 10 Gb final mpg-2 after conversion.
Is this because of the high resolution of the source file? Are there any settings in Tmpgenc Xpress to compensate for this that I'm missing? Better yet, is there another program that will accomplish what I want to do?
Thanks in advance for any info about this. I've searched quite a bit, and haven't found much. Could be I'm not asking the right search questions.

[guns1inger]

resolution won't influence running time. Tmpgenc obviously doesn't understand how to read the source video correctly, or the source is corrupt in some way, which is why tmpgenc sees it as longer than it is.

I would suggest trying FAVC or DVD Flick or ConvertXtoDVD for the conversion. All of these will preserve the 6 channel AC3 if it is compliant. You will have to extract the subtitles and make sure they are in a format that one of these will like, but otherwise they should do a good job.

[NoFace]

Thanks so much. I'm trying FAVC now.

[AlanHK]

You can serve the MKV with Avisynth via an AVS file, which many MPEG encoders can use:
E.g.:

DirectShowSource("406.mkv")
ConvertToYV12()
LanczosResize(720,576)