* start to add ffmpeg library * start to hook ffmpeg lib into main app * improvements * more progress * make pipeline builder configurable * more options * move more logic down into ffmpeg lib * ffmpeg lib desired state refactoring * add software scaling and padding * add loudness normalization and software deinterlace * add metadata output options * add setsar filter * use built-in scaling logic * fixes * initial nvidia support * nvidia improvements * support hls mode * print old arguments at debug level * fix package reference * start to add qsv support * formatting * fix tests * add timeout to transcode tests * show successful ffmpeg arguments * add vaapi support * add more software decoders * add experimental transcoder option * call existing ffmpeg process service for unimplemented features * fix nvidia mpeg2video bug * update changelog * ignore some neglected unit tests