Try something like this:
1) Merge Audio Tracks 7 and 8, put it in Audio Track 1, discard other Audio Tracks from source:
ffmpeg -i "in.mxf" -filter_complex "[0:7][0:8]amerge=inputs=2[mergedAudio]" -map 0:v -map "[mergedAudio]" "out.mp4"
In some cases you might add the option -ac 2 between the end-" of filter complex and the 1st map.
2) 1) combined with ...
This is too broad, but here are some tips.
If it is like this one
you could start with a nice PowerPoint presentation... Nicer than that example.
So what skills should I familiarize myself
There are three main categories.
1. Videos with significant production value.
Animation, photography, Illumination, music, voice, ...
Research how to use proxies. Proxies are copies of your original footage encoded at lower resolution, lower quality, or just in a less processor-intensive codec. You use them while you're working on your project, and then swap back the high quality files when you do your final export. A bit like offline and online video editing from the days when dinosaurs ...
Most likely, the issue is with the codec you're trying to edit. Temporal compression schemes require a lot of on-the-fly processing to decode. Players are optimized to do this sequential decode, but by definition, NLE's are non-linear.
All of the talk you see about proxies is really about converting temporally compressed formats into either uncompressed ...
For best results, the first thing you need to do is physically stabilize the gopro itself, as best as you can. Neither the gopro's built-in stabilization nor post processing stabilization can remove A) motion blur caused by excessive rotational movement or B) parallax introduced by rotational and translational movement. These two factors are the main ...
You want to use the Effect Controls panel:
As the help says, there are several standard effects added to a clip in the timeline, the effect you want to look for is Motion. Select the clip in the timeline, go to the Effect Controls panel, and expand the Motion effect. ...
As of resolve 16.2, it’s not possible to organize media from the cut page that way. Switch to the edit page. All of the edits you’ve made will persist, and you’ll be able to drag timeline clips to bins from there (this creates subclips). You can then switch back to the cut page and continue to work if that's what you prefer.
I would decide by running some recording tests, and deciding which image you actually prefer - the on-board stabilisation, or doing it in post on the PC. There will be pros and cons both ways - although I wouldn't worry about things like CPU overhead, unless you've actually read somewhere of this being an issue?
This article gives a little bit of a run down ...
There are several widely adopted file-based QC systems on the market. They include:
Telestream (formerly Tektronix) Aurora
Note that as of NAB NY 2019, Telestream had not announced plans for what will happen with Vidchecker and Aurora after the Tektronix acquisition.
I didn't find an actual answer, more a work around. As this was all part of a bigger, involving plex, I found a proxy (xteve) that includes ffmpeg transcoding, and I can set the options for ffmpeg. That is good enough for what I was trying to do.
Hope this save someone else a little time.