-channels 2 -freq 44100 -use-jack
alsa_pcm:capture_1 \ --no-cursor -fps 30 -x 6 -y 28 -width 640
-height 400
(you may need to adjust x and y for your borders, but
recordmydesktop needs multiples of 2 or you end up with a one pixel
border at the edge of your recording window.)
5. Play.
6. If
you're happy with the raw video, you can convert to Youtube with this
shell script:
ffmpeg -i $1 -pass 1 -s 480x300
-r 30 -b 284 -deinterlace \ -mbd 2 -padtop 30 -padbottom 30 \ -vcodec
flv -g 9000 -cmp 3 \ -acodec mp3 -ar 22050 -ab 64k -ac 1 -async 1 $2
$3 $4 $5 $6 $7 rm $2 ffmpeg -i $1 -pass 2 -s 480x300 -r 30 -b 284
-deinterlace \ -mbd 2 -padtop 30 -padbottom 30 \ -vcodec flv -g 9000
-cmp 3 \ -acodec mp3 -ar 22050 -ab 64k -ac 1 -async 1 $2 $3 $4 $5 $6
$7
and to Vimeo with this one(it could still be tweaked):
ffmpeg -pass 1 -i $1 -r 30 -b
900k -vcodec h264 -acodec mp3 -ar 22050 \ -ab 96 -ac 1 -async 1 -g
9000 -s 640x400 \ -padtop 40 -padbottom 40 \ $2 rm $2 ffmpeg -pass 2
-i $1 -r 30 -b 900k -vcodec h264 -acodec mp3 -ar 22050 \ -ab 96 -ac 1
-async 1 -g 9000 -s 640x400 \ -padtop 40 -padbottom 40 \ $2
The most important thing in these scripts is "async 1"
as it seems to fix all my audio syncing problems. Second most
important is padding, as 320x200 has a 1.6 size ratio, while
480x360(Youtube) is 1.3. Vimeo accepts 1.6 but does some weird
scrunching to the resulting flv that makes it look worse than
Youtube, so I pad it up to the more standard 640x480. Even then, I
think my Youtube encodes turn out better than whatever they're
doing.
This is where I stopped, before I started editing.
7.
The ogg that recordmydesktop makes is poor for editing and gave me
errors in the final edited video; unacceptable. So, another script to
bring it to the ffv1 codec, which works very well:
ffmpeg -i $1 -r 30 -b 6000k
-vcodec ffv1 -acodec mp3 -ar 48000 \ -ab 320 -ac 1 -async 1 -g 30 -s
640x400 \ $2
8. Now I use KDEnlive. The only
edits I've done with it are simple cuts, I use the razor tool
(shift+W) at cut points, delete the unneeded clips, and then move the
remainder together.
9. Something I'm still working on,
exporting out of KDEnlive. The main issue is that I can't find a
documentation for how to set up the encoder by hand like I do with
ffmpeg at the command line, so I've been using the presets, and they
screw with the resulting video's size and ratio. Not a happy
situation.