don't want to encode video, just down sampling audio

[trisonic]

hi all, i'm new to the whole conversion thing and have read many threads.
what i have are tv episodes(vcd compliant) about 43 minutes in length that i want to make into vcds. the prob is the 80 min limit per cd, thus i want to make xvcds that could hold 86~87 minutes total. what i want to do is to make tmpgenc not encode the video and just mux the audio after it has been downsampled.

what i did was extract the audio => headache to convert .wav file into mp2 128kps stereo file
opened up tmpgenc and input video, and input the new .mp2 audio file.
i leave all settings except for mpeg vcd (non-standard) and press encode.
i think the video gets reencoded when i did that because it takes 40+ minutes to process a 43 minute video.
file size is way smaller too

2nd method i did was:
opened up tmpgenc => mpeg tools => multiplex
input video file, input audio file(.mp2 from headache)
and run.
results: much faster, but file size is just a tad bit smaller
this seems to be the way to go because the file sizes of both files are smaller than 800mb.


my question is, which method i did was the proper way to just down sample audio and leave video alone to make an 87 minute vcd.
or can someone point me to the optimum procedure to keep video but down sample audio.
or just the best method to fit 87 minutes into a cd losing as litttle quality as possible.

thanks in advance

[Ejoc]

800MB MPEG will fit on a 700MB CD-R, so just burn it to CD. Changing the audio bitrate is very minor to overall file size, lowering the video bit rate gives you smaller files, and bad picture. You can change the audio bitrate w/ tmpgenc, so you could just load the audio as normal and lower the bit rate in the expert settings.

[ZippyP.]

2nd method i did was:
opened up tmpgenc => mpeg tools => multiplex
input video file, input audio file(.mp2 from headache)
and run.
results: much faster, but file size is just a tad bit smaller

The above method is the best for preserving the video quality, if you're happy with the audio at 128 Kb/s then you're fine. Any other method would involve re-encoding the video while lowering the video bitrate, which should be avoided for best quality.