Commands tagged convert

Even adds a newline.

umph is parsing video links from Youtube playlists ( http://code.google.com/p/umph/ )

cclive is downloading videos from Youtube ( http://cclive.sourceforge.net/ )

Example:

For reverse, there's asc2xml

They come as a part of the html-xml-utils debian package.

PS. Tried to submit sample data, but the site autoconverted the non ascii to html entities. So a bit of imagination is needed.

Gives stereo, 16bit, 44.1kHz (default in Ubuntu/Medibuntu ffmpeg).

-aq 2 = 220-250kbit/s VBR, lower number is better quality. 2 or 3 should be good for most people. If you want the best mp3 q you should remove -aq and use -ab 320k to get 320kbit/s, but that is probably overkill for most .flv videos.

Do you have a large library of flv's you have picked up over the years using FlashGot Firefox plugin?

Do you want to be able to convert them to Ogg Theora (video) at once?

Try out this script...

That should be a short as it can get.

The pdf is first converted to a bitmap, so change "-density" to match your printer resolution. Also be careful about the RAM required.

In this example rgb(0,0,0) is replaced by rgb(255,255,255), change to suit your needs.

Convert all jpegs in the current directory into ~1024*768 pixels and ~ 150 KBytes jpegs

aliases on each line.

i.e.

txt2html:

txt to Base64:

and so on.

find . -type f -iname '*.flac' # searches from the current folder recursively for .flac audio files

| # the output (a .flac audio files with relative path from ./ ) is piped to

while read FILE; do FILENAME="${FILE%.*}"; flac -cd "$FILE" | lame -b 192 - "${FILENAME}.mp3"; done

# for each line on the list:

# FILE gets the file with .flac extension and relative path

# FILENAME gets FILE without the .flac extension

# run flac for that FILE with output piped to lame conversion to mp3 using 192Kb bitrate

Adding the exclamation mark to the image geometry ignores the original aspect ratio.

More info about image geometry:

http://www.imagemagick.org/script/command-line-processing.php#geometry

You can also specify width and height of the resized image (in pixels), as an alternative to using a percentage.

Reduces the size of images.

More recent versions of the date command finally have the ability to decode the unix epoch time into a human readable date. This function makes it simple to utilize this feature quickly.

ffmpeg

-i = input file name

-s = set frame size, qcif=176x144

-vcodec = force video codec

-r = frame-rate [default = 25]

-b = bit-rate [200 kb/s]

-acodec = force audio codec

-ab = audio bitrate in bits/s [64k]

-ac = no. of audio channels [1]

-ar = audio sampling frequency [44100 Hz]

optional:

-sameq = use same video quality as source (implies VBR)

-f = force format

-y = overwrite output files

just a bit simpler