Audio Alignment on Short Clips

[HartleySan]

I wanted to make a short 30 second or so clip from a TV show episode. Anyway, I used the trim() function and the video came out perfectly fine, but the audio starts from the beginning of the episode. I really can't figure out how to align it. By the way, I'm using Gordian Knot. Thanks.

[CWR03]

You'd have to edit the audio yourself with that method - use DGIndex to create the trimmed .d2v file, which will output a trim-matched audio.

[HartleySan]

Would you mind e-jama-cating me a little on how to trim the video. It's not obvious and the help files are not helpful. Thank you.

[HartleySan]

Whoops! Spoke too soon. Got it. Thank you.

[HartleySan]

Do I have to convert the audio to MP3 with BeSweet, or can it be done in DGIndex? Thanks.

[Guest]

The DGIndex manual is clear and complete. :)

You can demux any audio, or decode AC3 to WAV.

[HartleySan]

What exactly does demux mean? Also, what if I wanna decode to MP3?

[CWR03]

Since you're already using Gordian Knot, just encode the demuxed audio stream from the clipped segment in the same manner as you have done before, or include the original AC3 audio (which is the .ac3 file automatically demuxed by DGIndex and is the file you have been importing for other jobs). In other words, you're trying too hard. You already know how to do what you want, don't overthink it.

[Guest]

When you combine video and audio together in a container, that is called muxing. E.g., a VOB contains muxed audio and video streams.

When you demux, that means you split those combined streams back to individual audio and video files. If the muxed file contained AC3 audio, then the demuxed audio would be an AC3 file.

DGIndex can demux any audio type, but it can *decode* on the fly only AC3 to WAV. Anything else you want to do with the audio must be done with an external application, such as BeSweet.