Misadventures of a Celtic Geek » aac http://blog.guesny.net Just another WordPress site Sun, 03 Jun 2012 19:25:07 +0000 en hourly 1 http://wordpress.org/?v=3.3.2 AAC – Round 2 http://blog.guesny.net/2009/05/20/aac-round-2/ http://blog.guesny.net/2009/05/20/aac-round-2/#comments Wed, 20 May 2009 08:19:09 +0000 welsh_dwarf http://blog.guesny.net/index.php/2009/05/20/aac-round-2/ Continue reading →]]> I’ve just gotten back into ffmpeg fun after a long haitus, during which ffmpeg v5 has come out.

(No deb instructions this time since I’ve passed on to arch, which has a perfectly functional package).

A couple of thing seem to have changed though, namely:

  • Bitrates are now in bytes/seconde rather than kbytes/seconde (unless otherwise stated)
  • AAC is no longer an encoder module (use libfaac)
  • mp4/amr containers don’t seem to work to well with libfaac, use 3gp instead to be safe.

Which gives:

 ffmpeg -i input.avi -vcodec h263 -b 409600 -s 352x288 -acodec libfaac -ab 65536 -ar 48000 -ac 2 -f 3gp output.3gp

Happy encoding

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