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Problematic to do while keeping the audio in synch? Can't load H.263 into an editor to do the conversions without problems? Keep reading...
The problem is that transcoding one MPEG profile to another will often not keep audio synch, particularly if you're going from PAL to NTSC or the reverse. This can also occur when transcoding other temporally compressed video formats like H.263, *.wmv or DivX to MPEG-2 for DVD.
I get around this by first transcoding the source to PICVideo MJPeg at quality=19 or 20. PICVideo is an *.avi software codec with locked audio, which can help in the final conversion to DVD. At its highest setting of 20 it's also very near lossless, but most times 19 is more than enough.
Once I have the source transcoded to PICVideo (at the originals resolution) it can then be loaded into DVD Workshop or DVD MovieFactory2, authored, transcoded to DVD MPEG-2 and burned to an NTSC DVD. If you stick to a bitrate of about 3000 kbps you might even be able to fit 4 hours on one DVD.
I've converted 12.5fps H.263 @352x288 and 25fps PAL VideoCD with suprising results.
The tools I use to do the conversions to PICVideo MJPeg are;
1. the STOIK Video Converter (freeware) for converting H.263 & DivX *.avi's or *.wmv. I've seen conversion rates as high as 2.5x realtime on my AthlonXP 2400+ system.
2. TMPGEnc for converting MPEG's to PICVideo MJPeg *.avi's. Just load the MPEG into the "Video source" dialog then use "File/Output to File/AVI File" & set the prefs. You can also apply the video filters (inlcuding noise reduction) and deinterlacers in the Settings/Advanced menu if you need 'em.
Dr. Mordrid
The problem is that transcoding one MPEG profile to another will often not keep audio synch, particularly if you're going from PAL to NTSC or the reverse. This can also occur when transcoding other temporally compressed video formats like H.263, *.wmv or DivX to MPEG-2 for DVD.
I get around this by first transcoding the source to PICVideo MJPeg at quality=19 or 20. PICVideo is an *.avi software codec with locked audio, which can help in the final conversion to DVD. At its highest setting of 20 it's also very near lossless, but most times 19 is more than enough.
Once I have the source transcoded to PICVideo (at the originals resolution) it can then be loaded into DVD Workshop or DVD MovieFactory2, authored, transcoded to DVD MPEG-2 and burned to an NTSC DVD. If you stick to a bitrate of about 3000 kbps you might even be able to fit 4 hours on one DVD.
I've converted 12.5fps H.263 @352x288 and 25fps PAL VideoCD with suprising results.
The tools I use to do the conversions to PICVideo MJPeg are;
1. the STOIK Video Converter (freeware) for converting H.263 & DivX *.avi's or *.wmv. I've seen conversion rates as high as 2.5x realtime on my AthlonXP 2400+ system.
2. TMPGEnc for converting MPEG's to PICVideo MJPeg *.avi's. Just load the MPEG into the "Video source" dialog then use "File/Output to File/AVI File" & set the prefs. You can also apply the video filters (inlcuding noise reduction) and deinterlacers in the Settings/Advanced menu if you need 'em.
Dr. Mordrid