Re: [FFmpeg-devel] Support for metadata in libavutil/eval.c

2014-07-15 Thread Nicolas George
Le quintidi 25 messidor, an CCXXII, Stepan Bujnak a écrit : >Now, as far as I know the > expression evaluation is now optimized to only work with double values, > therefore the re-implementation of the expression evaluation to accept > string arguments would

[FFmpeg-devel] Support for metadata in libavutil/eval.c

2014-07-13 Thread Stepan Bujnak
Hi, I was thinking about introducing support for meta() function in the expression evaluation language. As the ffmpeg filters gradually add support for metadata, it would be convenient to do something like this: > ffmpeg -i input.webm -vf > cropdetect,crop=x=meta('lavfi.cropdetect.x'):y=meta('la