Questions...

Do you, or even should you, record your trips for personal review later?

If you have, what did you get out of watching it later?

Do you mean record with a camera?

I have considered this, not to post anywhere but just to see what I look like when I'm gone. Two things have stopped me. 1 is that I have seen friends blastoff and it is highly uninteresting to watch and 2 is that I think me being aware of a camera watching me could (very likely) affect my trip, probably in a negative way.

Can't see what benefit there would be to it personally. If there was some way to record the actual trip, resulting in a video of the subjective experience... now THAT would be interesting

Record by whatever means is viable, and YES. You will accomplish little if you are not keeping some type of log of your journeys. This is absolutely vital IMHO. It doesnt have to be audio or video you can keep a journal but I find it absolutely essential to log your experience as fast as you can after the experience. Furthermore to train your short term memory to store internal experiences I found that keeping a dream journal works wonders. It really does work your brain is a funny thing. If you record your dreams as soon as you wake up in a matter of days you will find that you can remember them far better. This goes for DMT experiences as well.

I wont lie your not going to look too good on video. Audio is great you can turn it on before the experience and just talk when you want to during and after. Transfer that to a text file via a variety of software and compare notes as it were when enough data has been collected.

Audio recordings can be interesting to review later. I took a video camera along on a K trip and had a ton of fun with it, felt like I was recording hyperspatial information... But upon later review I couldn't glean much useful material from it.

That said, writing down or recording even just one sentence that you formulate from within the experience- as opposed to notes taken after returning to ground level... That can be some incredibly useful stuff. At the very least it can jog your memory and help recall the imagery of that moment in your experience. In the Hyperspace Lexicon, this is known as "planting a flag".