On 1/19/16, Bodecs Bela <bode...@vivanet.hu> wrote: > Hi All, > > currently scale video filter accepts expressions in its width and height > parameters but evaluates them only once at init and replaces them with > their actual values. Later on, if any parameter of incoming frames > changes - ie those were used in the original size expressions - then > they new values will not have any affect for width and heigth values. > They remain the same. This patch makes possible that width and height > expressions be evaluated frame-by-frame basis if width/height/sar/format > properties of incoming frame would change. To retain the current > behaviour and not to break any earlier app, a new config parameter has > been introduced. Its name is "eval" and it has two distinct values: > "init" and "frame". The default value is "init". > This feature is very usefull in case of DVBT mpeg-ts streams where SAR > may change > time-by-time from 4/3 to 16/9 and vica-versa and the size remains the > same and > and you want to create a variable sized output with 1/1 SAR. > > > Please consider to put this patch into the official ffmpeg source tree. > > thank you, > > Bela Bodecs >
probably ok _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel