clementfarabet/lua---ffmpeg — pull request #1 by jtbates (2012-03-06 21:11:37+00:00)
Title: Map paramater syntax change

The map parameter syntax is now '-map 0:stream_id' instead of '-map 0.stream_id'. I changed it to 0:v:stream_id to be sure we get a video stream and not an audio stream.

Reference:
http://ffmpeg-users.933282.n4.nabble.com/Invalid-stream-specifier-0-Stream-map-0-0-matches-no-streams-Changes-in-FFMPEG-map-option-td4091165.html
http://ffmpeg.org/ffmpeg.html#Advanced-options