/vr/ - Retro Games

>>2403519

>>1930590
>make sure to use identical colors
You mean when making the source video?

>make sure there's no dithering
is that an option for webms

>>1531297
ffmpeg -i video.vid -an output.webm
This is the bare bones

-c:v put a codec here (libvpx)
-b:v Bitrate/quality (1500K or 1.5M)
-r Framerate (ignore to use source)
-fs Filesize limit (use -fs 3M)
-an No audio. required for 4chan


Time commands:
-ss time to start recording (seconds)
-to time to stop recording
-t number of seconds to record
-vframes number of frames to record

so
-ss 1.5 -to 3.5
would record from 1.5 to 3.5 seconds.
You can also use timestamps
HR:MN:SE.CDS
01:02:45.555
-t 10 records the first 10 seconds
-t 01:00:00 records the first hour

-ss 10 -vframes 900 starts at 10 seconds and goes for 900 frames
size commands:
-s dimensions (640x480)
-vf scale= scales the vid
-aspect (4:3), (1.3333)

vf scale lets you simply set a new height or width and automatically adjust for aspect.
-vf scale=300:-1 sets width to 300 maintains aspect
-vf scale=-1:500 sets height to 500 maintains aspect


I don't know:
-crf
-qmin
-qmax


you just stack the options
So if you want
bitrate 1500K
from 5.7 seconds until we hit max filesize
adjusted to 240p
your command line would look like this
>ffmpeg -i "Game Video 2".avi -ss 5.7 -fs 3M -vf scale=-1:240 -an "Game Video 2 out".webm

The order doesn't matter, so long as each option title (-ss, -vf, etc) is directly to the left of its input.
But the filename has to be on the left and the output file has to be on the right.

Hey does anyone know if there are certain tricks for making webm work better with sprite stuff, like what we see more of here on /vr/?