Jump to content

approximative cut and paste for DVD authoring


Recommended Posts



I've been saving my old original VHS to hard disk lately, and now I try and group them on standard "Video DVD" (actually DVD+R). Successfully so far: I burned two 2-film DVDs :)


The latest (3rd) DVD I "authored" was from the Stargate, Crying Freeman, and Xmen1 special edition VHSs.

I structured the DVD like this:

- VMGM : 1 720x576 menu ("title") : choice between Sg, CF, and Xm.

- Titleset 1 : SG and CF (1 mpeg each, 352x576).

- Titleset 2 : 2 352x576 menus ("root" for main Xm main menu, and "chapters" for Xm bonus menu) + 33 352x576 mpegs.


Now the reason for those 33 mpegs for Xmen is that I sliced the main movie into 5 "common" parts, and 2 "normal-only" parts, the 8 bonus being insertable in place of a "normal-only" part or between two "common" parts. And each bonus is 3 videos: intro+bonus+conclusion. I also reused the "begin bonuses" short video from the VHS, as well as the "exit from bonuses" video.


All this to say that I did a lot of virtual "cut" (using avidemux) and "paste" (using dvdauthor).


The issue I have now is the "approximative" cutting of sound. To cut, I use avidemux, and choose the hh:mm:ss.th location where I feel the cut is safe. I save one file up to this point, another file after this point, then I compress each avi into a DVD-compliant mpeg using mencoder. Example of the problem I often have:

- I cut here (translated from French): "I trained them, and they now teach other mutans at their turn." // " Most students are..."

- I encode.

- I read a playlist of both files and I hear: "I trained them, and they now teach other mutans at their tGrzz. Most students are..."


Why is picture cut and paste precise, and sound cut and paste approximative?


I know there are picture-related rules to choose the cutting point:

- must correspond to a frame, eg 10:25.20 or 10:25.24, not 10:25.21;

- if not mjpeg, then must be a I-frame (at most each 0.6 seconds for a DVD-compliant video).


Are there such rules one has to know for the audio side, when it comes to choosing the point of the video where you will cut?



Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...