Why use an mpeg encoder

[perfection]

If i capture in SVCD why would i want to use an encoder like Tmpeg? Don'y you think the quality will deteriorate as i capture at a particular bitrate, then linear edit it (on another program) to remove say, commercials and add transitions etc and again save it using a SVCD template (where the bitrate will be different from the capturing program.

After this why should one use a program like Tmpeg for a third run for the final preburining SVCD file (whoich would probably be different from the first two in terms of bitrate)? Would this constant processing deteriorate the quality?

Common sense tells me that Tmpeg will always be the 3rd step in such a process so why use it?? I can undertsand avi and other conversions or frameserving to TM[eg but what about my case??

In fact the authoring and burning software may do a recoding if the statistics are not compatible (like Nero does while burning SVCDs) unless Tmpeg also burns (does it?)

[vitualis]

If i capture in SVCD why would i want to use an encoder like Tmpeg?

Firstly, you need to learn how to ask questions rather than just answering your own questions.

But yes, if you are going to capture in SVCD appropriate MPEG-2, then it doesn't make much sense to re-encode it with TMPGEnc. However, it is unlikely that your on-the-fly MPEG-2 encoder will make "in-specification" MPEG-2 which means that you will either need to re-encode it or at a minimum, re-multiplex it. That is where a program like TMPGEnc comes in.

In fact the authoring and burning software may do a recoding if the statistics are not compatible (like Nero does while burning SVCDs) unless Tmpeg also burns (does it?)

You should never let a "burning" program reprocess your media files if you can help it as they are much less likely to do a good job. TMPGEnc does not burn DVDs unless you get their DVD authoring suite.

Regards.

[kschang]

If you can ensure that 1) Your capture program wil write out a perfect SVCD MPEG2 stream and 2) Your editing program also will, then no, there really isn't any need to use TMPGEnc, which is mainly a transcoding tool. However, most likely, you will need to filter, change the bitrate to control the final filesize, and various tweaks before you burn, and I doubt your capture or edit program do that.