Module: libav Branch: master Commit: 2bbb472016f52c5e282c83a988a5179f1079557a
Author: Anton Khirnov <[email protected]> Committer: Anton Khirnov <[email protected]> Date: Sun Dec 25 13:48:06 2011 +0100 FAQ: add an entry for common error when using -profile --- doc/faq.texi | 20 ++++++++++++++++++++ 1 files changed, 20 insertions(+), 0 deletions(-) diff --git a/doc/faq.texi b/doc/faq.texi index f3ddbbe..8044200 100644 --- a/doc/faq.texi +++ b/doc/faq.texi @@ -266,6 +266,26 @@ avconv -f u16le -acodec pcm_s16le -ac 2 -ar 44100 -i all.a \ rm temp[12].[av] all.[av] @end example +@section -profile option fails when encoding H.264 video with AAC audio + +@command{avconv} prints an error like + +@example +Undefined constant or missing '(' in 'baseline' +Unable to parse option value "baseline" +Error setting option profile to value baseline. +@end example + +Short answer: write @option{-profile:v} instead of @option{-profile}. + +Long answer: this happens because the @option{-profile} option can apply to both +video and audio. Specifically the AAC encoder also defines some profiles, none +of which are named @var{baseline}. + +The solution is to apply the @option{-profile} option to the video stream only +by using @url{http://libav.org/avconv.html#Stream-specifiers-1, Stream specifiers}. +Appending @code{:v} to it will do exactly that. + @chapter Development @section Are there examples illustrating how to use the Libav libraries, particularly libavcodec and libavformat? _______________________________________________ libav-commits mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-commits
