xvid files act weird in TMPGENC

[briansmccabe]

Hi -

Sometimes when I try to convert an xvid avi to MPEG-2 in TMPGENC Plus, the screen that shows how long and how big the outputted file will be indicates that the file will be MUCH longer in time than the original file. An example is I try to convert an 80-minute long xvid avi file, and TMPGENC tells me the final MPEG-2 file will be 303 minutes long, and 186% of max size for a single-layer blank DVD - and this is with the avg video bitrate set at the lowest possible setting (2000 kbits/sec)!!! I cannot figure out why it is interpreting the xvid file this way. I even created the xvid file myself, using AutoGK and making the audio CBR 128kbps MP3.

Any suggestions? I'm very puzzled by this.

Thanks -

Brian Mc

[Baldrick]

Common problem with mp3 vbr avis. But I don't know why it happens for cbr mp3. Have you tried change the directshow reader priority in tmpgenc? or are you using tmpgenc xpress?

[briansmccabe]

I suspected that that was the case (the VBR MP3 setting) which was why I was rather surprised. I have not tried changing the directshow priority - what's an appropriate setting?

thanks for the help!

Brian Mc

[j4gg3rr]

You could also try setting the "Source Range" markers in the advanced tab, rather than leaving the end frame marker at -1 set it to the end frame count.

EDIT:
An appropriate setting for Directshow File Reader would be higher than any other AVI File Reader so that it is the 1st used. This will ensure your systems highest priority XviD Directshow decoder(eg. FFDShow, XviD) is used instead of the internal OpenDML File Reader.

[briansmccabe]

Well, I'm an idiot.

turns out, my installation of AutoGK at work was set to the default audio compression values, which means it was determining by itself whether the audio was to be VBR or CBR. So my example file very well could be VBR audio for all I know.

The trick about going into the range settings worked perfectly.

Thanks for everyone's help!!