With good compression techniques, you really don't need to capture to that large a res, esp just for displaying them on YouTube. That's your main problem concerning lag while capturing.
It's also good to capture to a secondary drive and have both drives fully defragged before doing so. I also use AlacrityPC to shut down all background apps and non essential services while playing/recording.
What codec are you using to compress with and what editor do you use? I was using Xvid/LAME and VirtualDub/Audacity, but lately have switched to x264/NeroACC and AutoMKV. I still use good old VDub and Audacity for editing though.
I encoded it to a file size 1/10th of the original with x264 before sending it to youtube, but capturing it is what I was saying is large.
No way can you send a uncompressed 10min video to youtube, remember they have size restrictions.
My editor if I have to edit the file is Sony Vegas Pro, I export it as a uncompressed HuffYuV file.
Then I encode it with very high settings with x264 for the video file, then dump the audio to .wav with virtualdub, encode the audio with NeroACC and then mux them together with MP4Box (as I use .Mp4 files, I would probably use AutoMKV if I used .mkv files but youtube recommends .mp4's)
I use Avisynth scripts to feed my files into x264 and can do minor editing like splicing of the clip from there if desired.
There is a moment or two that lagged while recording so those are going to show up no matter what. However by large the video has no lag for me as long as I let it preload long enough to not cause any breaks for loading. On my fast home connection I do not even have to wait as long as youtube is up to speed.
Dopefish here on our forums taught me pretty much everything I know for the manual command line encoding of x264 and got me to the advanced level I am at now. Before I was at the mercy of GUI's and some of them are not too bad.
I can recommend:
AviDemux
MeGUI
StaxRIP
HandBrake
All of them have there advantage/disadvantages but by far I found those 4 to be the best.
The few flaws I found in each may have been fixed by now and offer a viable replacement to doing it the manual way. Id say MeGUI was pretty much already there.
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