avconv [input options] -i <input> [output options] <outputfile>

for most options a stream can be specified: -c:a will set the codec for the audio stream

• -b bitrate (500k, 4M)
• -c codec (mpeg4)
• -r framerate (24)
• -s scale (hd480)
• -aspect x:y (16:9)

video codecs examples

• libxvid
• mpeg4
• h264

audio codec examples

• libmp3lame
• mp2

scale examples

• hd480
• hd720