Knowing that what is tbr exactly, can not solve the problem. the frame rate are same technically, when you compare the information by ffmpeg. The fact is that the transformed video, after using vcodec libx264, is twice faster as the original video. when i compare the information of bot video i noticed tbr of the transformed video is twice as the original one. can you help me to have a similar video after transformation?
On 16 May 2012 19:40, Alex Cohn <[email protected]> wrote: > On Wed, May 16, 2012 at 11:38 AM, <[email protected]> wrote: > >> Hi >> I convert a mpeg1 video mpeg4/ AVC by the below command but i dont know >> why the visual frame rate become double after conversion (fps in both are >> same but tbr will be twice as the original video) >> >> ffmpeg -i C:\Video\TrecVid-Video\2\1.mpg -r 25 -an -vcodec libx264 >> -threads 0 -f h264 -r 25 -g 0 C:\Video\TrecVid-Video\2\11.264 >> >> what is your advice? >> > > It's fine for TBR to be higher than the nominal frame rate. See > libavformat/avformat.h for more explanation: TBR is the r_frame_rate field > of AVStream structure. > > BR, > > Alex Cohn > > _______________________________________________ > Libav-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/libav-user > > -- Amir H. Rouhi PhD Student/ CSIT RMIT University Room: 14-09-04 http://raws.adc.rmit.edu.au/~s3288736/blog2/
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