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Originally Posted by Chock
...and despite youtube's compression and 100 meg upload limit, this thing can still be viewed full screen at reasonably decent quality (you may already have seen this one BTW, I think the original file I uploaded to youtube was about 71 meg, which, at exactly 5 mins long, would work out at about 70 meg less than your 15 minute chopper attack):
 Chock |
Just looked at the actual flv of your once 70 MB youtube vid - It has a lot compression blocks, and little detail. This is fine for the type of vid it is though. It won't work for trying to pick out small details on the ground from the cockpit of a helo, so I really can't use it. I can see why the compression blocks exist - they compressed it to less than 11.5 MB (I downloaded it to analyze). On my vid, you wouldn't even be able to see any swaying grass, and you wouldn't even be able to see a single guy on the ground if I did this (Its already hard to see them at 640x480 - any less and you will have no idea what I was shooting at) so I am stuck using the higher resolution and higher bitrate. Maybe I shouldn't tell you, but the source file I used was originally 1.8 GB!
My efforts to preserve as much detail as possible:
I left full recorded detail, used a 8 tap resizer (Alpha code still, but it works fine without error) to match NTSC spec, wrote an AVISynth script for it and ran it through a deinterlacer, so the AVI is progressive frame, and followed up with cropping it to exact size - no black borders. I then loaded it in VirtualDUB, and set up for a 2 pass compression using a quantiziser setting of 2 for both I and P frames, and a setting of q 4 for B frames (VHQ is also set for B frames). I opted to leave global motion compensation off and quarter pixel off to keep it compatible with standard DivX.
For the audio, I took the MPEG-1 stream, had to manually line up the audio with the frames (it didn't transfer right when re-building the ty stream) and converted it to a VBR (VBR old of course - Besweet engine) MP3 stream using a setting of Q100, and then muxed it in using Nandub.
The point is, if I popped this on YouTube - this quality is gone. Nothing I can do about it. It is lost forever and anything tiny won't even see show up.
See my delimma? Besides, if anyone has an interest in ArmA, then they will spend the 5 min it takes do download it, if you know what I mean.
-S