Digital Video

From Eugene Eric Kim
Revision as of 22:28, 8 September 2010 by Eekim (talk | contribs) (Moved content from Burden's Landing)

I'm starting to deal with Digital Video much more, what with video from my camera, MythTV, my DVD collection, and my Cowon D2. Here are my notes on codecs, conversions, and the like.

Cowon D2

The D2 plays the following video format:

  AVI
  - [[Xvi D]]
  - 320x240
  - 30 fps
  - VBR 50

  MP3
  - 128 kbps


Windows Media Player does not have the XviD codec by default, so you need to install it separately.

ffmpeg settings:

Example 1:

ffmpeg -i INPUT -s 320x240 -vcodec mpeg4 -vtag XVID -b 500kb -mbd rd
       -flags +4mv+trell+aic -cmp 2 -subcmp 2 -g 300 -r 29.97 -acodec mp3
       -ab 128 -ac 2 -async 1 OUTPUT.avi


Example 2:

ffmpeg -i INPUT -pass 1 -s 320x240 -vcodec mpeg4 -vtag XVID -b 500kb -mbd rd
       -flags +4mv+trell+aic -cmp 2 -subcmp 2 -g 300 -acodec copy null.avi
       -threads 2

ffmpeg -i INPUT -pass 2 -s 320x240 -vcodec mpeg4 -vtag XVID -b 500kb -mbd rd
       -flags +4mv+trell+aic -cmp 2 -subcmp 2 -g 300 -acodec mp3 -ab 128
       -ac 2 -async 1 OUTPUT.avi -threads 2


(You can use 320x180 plus -padtop 30 and -padbottom 30 for 16:9 aspect ratio content. For mid-quality bitrates, use 350; for low-quality, use 250.)

Handbrake

I use a Handbrake script to rip movies directly to Cowon format. I'm considering playing with other parameters.

VLC

You can use VLC to rip video.

Panasonic Lumix DMC-ZS3

VLC plays AVCHD (.MTS files) just fine. To convert it to AVI, I use ffmpeg. First, I figure out the bitrate of the original file:

 ffmpeg -i file.mts

Then I convert using the bitrate information. It's important to do this; otherwise, the converted file will be pixelated:

 ffmpeg -i file.mts -b BBBBBk file.avi

where BBBBB is the bitrate in kbits/sec.

See Also