When you record each track, make sure that the level never goes up to zero on the meter. If it hits zero, it means that the recording is clipping. Clipping is when the computer can no longer accurately record the waveform. So instead of recording the shape of the wave, the upper and lower limits of it will be clipped in a straight line. So a tone sound ...
I've finally found out the answer. It is possible, but fiddly.
For the source timecodes for every clip:
Duplicate your sequence.
Find the Timecode effects in the Effects panel and apply it to the first clip in the sequence.
Double click the clip and go to Effects controls and make sure the Timecode Source effect is set to "Media".
Then copy the ...
Whenever you get such an error it does indeed mean the file is not supported and you cannot edit it without transcoding it to another format first using another tool.
Choose a compatible format and make sure the bitrate is set high enough to avoid noticeable compression artefacts. If possible, set the tool to copy the audio track because it probably doesn't ...
The way I would do it is just duplicating my timeline, make one for each type of encoding I want (clip_001_youtube, clip_001_instagram,...), then use Media Encoder, just publish them all and then let ME do it's thing of batching them.
I find it helpful to make a bunch of timelines that are almost the same. Sometimes, I use nesting to make it easier also.