natively compiling ffmpeg, x264, mplayer on mac (with builtin x264 and webm encoding)

i’m very pleased that after years of hacks here and there, all three heads of the current codebases pretty well build natively on mac (snow leopard) for

• x264
• ffmpeg
• mplayer

here, i’m making sure that i compile in static version of libvpx (Webm) and libx264 (h.264) video packages so that the ffmpeg can easily make hiqh quality h.246 and webm transcoded videos.

http://archive.org/~tracey/downloads/macff.sh

So we can make nice (2 pass video) ~768 kb/sec 640×480 derivatives like so (alter “-r ” as appropriate):

# make WebM
ffmpeg -deinterlace -y -i 'camels.avi' -vcodec webm -fpre libvpx-360p.ffpreset -vf scale=640:480 -r 20 -threads 2 -map_meta_data -1:0 -pass 1 -an tmp.webm


ffmpeg -deinterlace -y -i 'camels.avi' -vcodec webm -fpre libvpx-360p.ffpreset -vf scale=640:480 -r 20 -threads 2 -map_meta_data -1:0 -pass 2 -acodec libvorbis -ab 128k -ac 2 -ar 44100 tmp.webm


mv tmp.webm 'camels.webm'

# make h.264

ffmpeg -deinterlace -y -i 'camels.avi' -vcodec libx264 -fpre libx264-IA.ffpreset -vf scale=640:480 -r 20 -threads 2 -map_meta_data -1:0 -pass 1 -an tmp.mp4


ffmpeg -deinterlace -y -i 'camels.avi' -vcodec libx264 -fpre libx264-IA.ffpreset -vf scale=640:480 -r 20 -threads 2 -map_meta_data -1:0 -pass 2 -acodec aac -strict experimental -ab 128k -ac 2 -ar 44100 tmp.mp4


qt-faststart tmp.mp4 'camels.mp4'


our preset files:
http://archive.org/~tracey/downloads/libvpx-360p.ffpreset
http://archive.org/~tracey/downloads/libx264-IA.ffpreset

Nice things about the h.264 derivative:

• plays on all iphones and ipads
• browser video tag and/or flash plugin compatible
• starts immediately, seeks immediately even before entire video is downloaded

hope this may be useful!

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