|Lame: Toshiba 32PU200|
It worked well for me for a few years- I now have three screens at each workstation: a monitor, TV and the laptop screen. Two of the TVs in the study failed from lightning strikes. In both cases they damaged the TV's HDMI interface so that the laptop or desktop can no longer send images to the TV. However, they still worked as TVs, except I no longer watched TV much.
Repair proved difficult: the designed boiled down to just one huge IC(Realtek RTD2668 LCDTV controller), and its replacement involved hand-soldering 128 pins of 0.5mm pitch. This would be a couple or hours work with the microscope. But the TV was supposed to make less work for my eyes.
|Realtek LCD TV controller RTD2668|
Defenestration is not an option. To get around this I used mencoder (mencoder comes with mplayer which is standard issue for Slackware 14.2) to re-encode the problem movies on my laptop before transferring them to the thumbdrive (I use a Sandisk Ultra for high speed). mencoder with pretty much default settings produced immediate results:
mencoder BabyDriver.mkv -o BabyDriver.avi -oac pcm -of avi -ovc lavc
It was so fast, mencoder can be (and often is) used to re-encode and stream movies on the fly. But now and then I get a really good quality movie and the above settings resulted in rather poor blocky colors. For cases like these the re-encoding can take as much as four hours but the results are quite satisfying.
First you need to calculate the bitrate. The formula is
optimal_bitrate = 50 * 25 * width * height / 256
For the 32PU200, width is 1920 and height is 1080, so my best bitrate is 10125000
For best quality we go for a two pass method (you run mencoder twice on the same file). This lets mencoder do really well on the action sequences, explosions, etc.
Now the mencoder command becomes:
mencoder ./BabyDriver.mkv -o ./BabyDriver.avi -oac lavc -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=10125000:v4mv:mbd=2:trell:cmp=3:subcmp=3:autoaspect:vpass=1 -vf hqdn3d=2:1:2
For the second pass the command is mostly the same except we use vpass=2
mencoder ./BabyDriver.mkv -o ./BabyDriver.avi -oac lavc -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=10125000:v4mv:mbd=2:trell:cmp=3:subcmp=3:autoaspect:vpass=2 -vf hqdn3d=2:1:2
Notice the file has ballooned to almost double the size:
-rwxr-xr-x 1 root root 2.3G Oct 15 01:41 BabyDriver.avi
The original being
-rw-r--r-- 1 heong users 1.2G Oct 1 16:14 BabyDriver.mkv
If the original picture has a lower bitrate, say it is originally 640 by 480 resolution, you can reduce the bloat a little by reducing the bitrate:
$echo "50*25*640*480/256" | bc