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Originally Posted by MavCDF For the people who have observed that v.3 re-encodes streams which are already compliant, I'm interested in whether you can tell this from the results or from the length of time the authoring takes or from something else.
I use DVD compliant .m2v & ac3 streams which are correctly sized (ie. just below the TDA limit of 4,438) and the authoring using v.3 takes around 7 to 8 minutes. That short time made me think there wasn't any re-encoding going on ... but I agree that the quality of the authored DVD seems inferior to those authored using version 1.6 (using the same inputs).
So what is the giveaway sign that re-encoding is taking place? |
It's 10 min vs an hour here. I have figured out that it is based on the changes you make or don't make in the video properties, and/or audio re-encoding. About the only thing I'm able to change and still avoid a re-encode is the aspect ratio, I can change 4:3 to 16:9 with no re-encode. I'm using MPEG-2 files with AC3-2 ch. Also noted that changing from interlaced to progressive also forces a re-encode.