2017-09-07 15:57 GMT+02:00 Daniel <5960...@gmail.com>: > Hello Everyone, > > I have tried to convert some videos to mp4 format what has surprised me > was the size of the videos, After the conversion some videos were 2,3,4 > times bigger then the original wmv files. Here is the command i used to > convert : /usr/local/bin/ffmpeg -i video500.wmv -c:a libfdk_aac -c:v > nvenc_h264 video500.mp4 ; After this command the mp4 file is 630MB and > the wmv file is 150MB (you can find attached the ffprobe to bothe files). > If you can suggest any way on how to keep the quality and make the mp4 > files smaller please let me know . > > > ps: On some mp4 videos the bitrate has doubled have no idea why ? >
If you don't supply your own settings, ffmpeg (and/or the underlying codec) will assume some default values, not necessarily in compliance with the input. In your case, you probably want (at least) to set the bitrate. Also, I think that hardware encoder tend to produce bigger file for same quality (and worse quality for same size), but this might not be accurate anymore. _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".