Hi, I am using your command line which one you give but it takes 4 min time and the file size becomes 320 MB.Whereas i am changing the crf value but quality is not maintain. So, can you help me the other one command line to fast and maintain quality.
On Wed, Feb 13, 2019 at 5:30 AM Yuntaek Lim <[email protected]> wrote: > Hi Amit, > > Do you have expected the minimum rate of reducing filesize and processing > time? > If you want maintain the quality, use low value of "crf" such as 18 to 20. > The preset "ultrafast" provide fast encoding but lower compression rate. > I suggest you decided the target filesize and the processing time. Then, > you try to find the value of "crf" and the value of "preset" which > satisfying you. > "-i 503148_inn.mp4 -codec:a copy -preset ultrafast -vcodec h264 -crf 20 > 503148.mp4" > Preset values are listed on "https://trac.ffmpeg.org/wiki/Encode/H.264";. > > Regards, > > > > > 2019년 2월 13일 (수) 오전 3:29에 AMIT KUMAR <[email protected]>님이 작성: > > > Yes i have the original source file which is in .webm and then i am > using > > 503148.webm -preset ultrafast -max_muxing_queue_size 999999 > 503148_inn.mp4 > > After that mute video extracting audio and merge that audio file in one > > that i have a audio file then we merge the audio and video then it > creates > > 503148_inn.mp4 which one i shared through link. > > Then i need to compress, maintain quality and do that process fast. > > > > > > On Tue, 12 Feb 2019 11:48 pm Ted Park <[email protected] wrote: > > > > > Try to find the original source, I’m positive you are trying to work > with > > > a stream with many, many duplicated frames. > > > _______________________________________________ > > > ffmpeg-user mailing list > > > [email protected] > > > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > > > > > To unsubscribe, visit link above, or email > > > [email protected] with subject "unsubscribe". > > _______________________________________________ > > ffmpeg-user mailing list > > [email protected] > > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > > > To unsubscribe, visit link above, or email > > [email protected] with subject "unsubscribe". > _______________________________________________ > ffmpeg-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
