KVCD- to DVD question...

[marklight]

I have a KVCD file that I want to convert to DVD- however, the resolution is small. (it should be known that I have the registered version of ffmpegx). So when I used the S/VCD to DVD function the video came out really small on the DVD, and I believe the audio was off. I used to have convertxtodvd on my pc - and when I'd have a KVCD file i'd just take the video file directly from the mpegav folder and convert it to DVD format- however if I try to do that with ffmpegx it says it can't find the video. So i'm wondering if there's a KVCD codec I need.

Any help is appreciated !

[tomlee59]

There's no special "KVCD codec," so that's not your problem. First off, what is your source file? Is it a .dat file that's on a burned disc, or is it an image file, or a .mpg? To convert to DVD with ffmpegx, you need to start with .mpg.

Next, as long as your KVCD was made using one of the legal resolutions (352x240 for NTSC, x288 for PAL), you shouldn't have to reencode the video stream at all* -- compliant VCD resolutions are also legal DVD resolutions, and mpg1 is a subset of mpg2. Good thing, too; you're starting with substandard video, so the last thing you want is additional degradation from another transcoding. So, demux the .mpg file, and set aside the video stream for the moment.

The audio file is a slightly different story. DVD requires the sampling rate to be 48kHz, not (K)VCD's 44.1kHz. So, take the audio stream and use ffmpegx to reencode it. This is a much faster operation than video encoding.

Next, mux the video and audio together. Finally, author the resulting .mpg as DVD, verify that the result works, then burn and enjoy.

*Allegedly, some DVD players may have trouble with the result; I've not experienced this, but I thought I'd pass this along, FWIW. If you encounter this problem, you will have to do a true re-encode.

[Case]

Marklight has the registered version, so he could use the svcdvd tool, to have tomlee's process done in an automated way. Should start with .mpg as source, tho'.

[tomlee59]

I haven't kept up with the latest ffmpegx releases -- thanks, Case, for letting me know of this new feature. Pretty handy, especially for what Marklight wants to do!