Separating the audio and video into separate streams is called Demuxing. There are quite a few apps that do that. They tend to keep them in the same formats they already are; if it was compressed in MP3 or AC3 or whatever, that’s what it’ll be in when separated. But from there you should be able to recompress.
Just for the hell of it, I tried DbPowerAmp’s music convertor. I didn’t dream it could handle video.
That sucker did!!! That’s the coolest thing ever. It took 20 seconds to make me an audio file. I had my choice of mp3, Flac, Wav etc. I choose Wav because I need to edit lossless.
Once again, I discover DbPowerAmp is the best thing I ever bought. It does so, so, so more than just rip cd’s. I’m stunned a CD ripper can handle a video file. Especially a mkv or mp4. But it did and did it really well.
I hadn’t got that far yet. I didn’t think Audacity handled anything but Wav. But, it might do aac. I just didn’t try it yet.
Anyhow, looks like I got what I needed. I have a Wav audio file that I can easily edit lossless. Then use DbPowerAmp to convert the Wav to Flac or Mp3. All this work to get a mp3 from youtube. But, this performance was never released on CD. It was only performed on TV.
Geez, I’ve forgotten a lot about Audacity. It’s been several years since I edited with it. I couldn’t mark my left and right boundaries. I would have sworn it was “[” and “]” But, it wouldn’t stay. If I clicked anywhere in the timeline my boundary mark disappeared.
Anyway. I just selected the region I wanted with my mouse. ctrl-c to copy the selection and then New, Paste. Dirty way of doing it, but it worked.
Thanks for everyones help. I’m loving this audio clip. I’m copying it to my mp3 player right now.
Thanks BigT. I’ll install that plug in and see if I can open the video, mp4 directly in Audacity. You say it’ll demux it for me? That’ll make the whole process a lot easier.
btw, I figured out what I was doing wrong editing before. “[” is the key for selecting Left Boundary and “]” selects the right boundary on the timeline. It was just late and I was making a silly error. Once the selection is highlighted, ctrl-c to copy and then click New and ctrl-v to paste. I used to do this frequently when I was capturing audio with my pc a few years ago.