Dana 28. 6. 2015. 07:28 osoba <[email protected]> napisala je: > > At 6/27/2015 09:02 PM, you wrote: >> >> Hi, >> >> >> In normal png file, there is no alpha channel, and there is color in the background. If there is alpha channel in png files, the background can be transparent, and the object in png file can be partially transparent. >> >> >> How to make a png file with alpha channel, so that, the background is transparent and the object is partially transparent? Could ffmpeg do it? > > > Since ffmpeg is a video processing tool, even if it could I wouldn't recommend it. I used another free tool: IrfanView. I believe you can load an image into it & tell it to make a certain color/range of colors transparent.
IrfanView is not free and ffmpeg have already tools to make certain color/range of colors transparent. > _______________________________________________ > ffmpeg-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/ffmpeg-user _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
