yes @manuel its getting bit hard even after setting -b:v 25M -minrate 25M maxrate 25M -bufsize 25M it not generating CBR mode output and i will try for 1 & 2 pass once and convey you if i get the constrained VBR
On Fri, Aug 11, 2017 at 11:20 AM, Manuel Tiglio <[email protected]> wrote: > I have had the same problem with both CBR and constrained VBR, even with > two passes, and no luck in really controlling the bitrate as specified. I > posted it a couple of weeks ago but did not get anyone who could really get > CBR and or 110% or 150% or any other constrained VBR or at least exactly > how to reproduce any results. > > > > On Aug 10, 2017, at 10:35 PM, akash kulkarni <[email protected]> > wrote: > > > > its fine @jmkhoo1 atleast you tried and its appreciated... > > input file is of constant bit rate mode after executing command i am > > getting variable bit rate... > > so question was how i get the CBR mode output > > > > On Thu, Aug 10, 2017 at 7:59 PM, jmkhoo1 <jmkhoo1-at-yahoo.com@ffmpeg. > org> > > wrote: > > > >> Apologies. I should have tried it out first. You are correct. Even > >> specifying r:v and -b:v failed.-------- Original message --------From: > >> jmkhoo1 <[email protected]> Date: 8/10/2017 9:28 AM > >> (GMT-05:00) To: FFmpeg user questions <[email protected]> Subject: > >> Re: [FFmpeg-user] CBR and bitrate > >> If you mean a constant frame rate, use -r:v 25. If you actually mean > >> bitrate, use -b:v and -b:a. I think you might want to look at the x264 > >> switches to make sure that it is encoded and a constant bit rate, > though I > >> am fairly sure specifying a bit rate will do it.-------- Original > message > >> --------From: akash kulkarni <[email protected]> Date: 8/10/2017 > >> 7:18 AM (GMT-05:00) To: FFmpeg user questions <[email protected]> > >> Subject: [FFmpeg-user] CBR and bitrate > >> hello everyone > >> > >> i have file with CBR and when i am converting it to other format by > using > >> following command i am getting VBR both video and audio > >> > >> ffmpeg -i input.mp4 -y -r 25 -c:v libx264 -look_ahead 0 -preset veryfast > >> -b:v 25M -c:a aac ouput.MTS > >> > >> so How i can get the output file in CBR mode and frame rate 25. > >> _______________________________________________ > >> 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". > > _______________________________________________ > 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".
