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Not a proper 'app' page, just an overview of my understanding. --Speedevil 17:39, 16 February 2007 (CET)
Video is problematic.
On the minus side.
However.
On the positive side.
From a conversation with XorA, in the IRC channel.
400kbps mpeg4 works on a 200Mhz neo (without sound) on prerotated 240*320 ffmpeg codec videos, at 25fps, using stock mplayer.
With sound, this drops to 18fps.
There are optimisations for mplayer that look promising to get 25fps with sound.
For switching between QVGA and VGA mode do the following with a compatible kernel:
chvt 4 && echo qvga-normal > /sys/devices/platform/s3c24xx-spi-gpio.1/spi0.0/state && fbset qvga
vice versa:
echo normal > /sys/devices/platform/s3c24xx-spi-gpio.1/spi0.0/state && fbset vga && chvt 3
taken from http://lists.openmoko.org/pipermail/neo1973-hardware/2007-October/000267.html
To make your videos/DVDs neo1973 compatible use mencoder like this: Find out the -vf cropping parameters with
mplayer input.avi -vf cropdetect
let it run a few seconds and insert the given cropping values into this command
mencoder input.avi -ovc lavc -lavcopts vcodec=mpeg4:vhq:vbitrate=300 -vf crop=xx:xx:xx:xx,rotate=2,scale=-2:320 -oac mp3lame -lameopts br=64:cbr -o output2.avi
To encode a DVD first find out the -vf cropping parameters with
mplayer -dvd-device /path/to/dvd dvd:// -vf cropdetect -sb 50000000
let it run a few seconds and insert the given cropping values into this command
mencoder -dvd-device /path/to/dvd dvd:// -ovc lavc -lavcopts vcodec=mpeg4:vhq:vbitrate=300 -vf crop=xx:xx:xx:xx,rotate=2,scale=-2:320 -oac mp3lame -lameopts br=64:cbr -o output.avi
This will rotate the video/DVD, scale it and encode it to mpeg4 with a bitrate of 300kBit/s. Works like a charm.
To avoid console blanking type
echo -e '\033[9;0]' > /dev/ttyX
where 'X' is your terminal number - for example if you did chvt 4 then /dev/tty4 is your terminal.
To avoid kernel output in vt do
echo 0 > /proc/sys/kernel/printk
To get best speed on GTA01 (best size-speed-resolution-codec trade-off I could find - doesn't mean it's perfect though) crosscode using:
mencoder <sourcefile> -o <targetfile.avi> -ofps 13 -vf scale -zoom -xy 240 -af channels=1:0:0:1:0 -oac lavc -ovc lavc -lavcopts acodec=mp3:vcodec=h263p:autoaspect=1:vbitrate=300:abitrate=32
You can playback the file using:
mplayer -sws 0 -nodouble -vo sdl -fs -framedrop <tagetfile.avi>