[Libav-user] Double frame rate after conversion

Alex Cohn alexcohn at netvision.net.il
Thu May 17 08:55:21 CEST 2012

On Thu, May 17, 2012 at 4:29 AM,  <amir.rouhi at rmit.edu.au> wrote:
> I usually use SMPlayer, but even ffplay shows the same behavior (the speed
> is twice so the time length is half).
> my version of VLC can not play .264 files, may be i need to install a patch
> or upgrade it.

One reason could be that your input mpg file has actually different
frame rate, you override it with 25 on input. Also, try to use
-force_fps parameter, -r may be considered a recommendation only.

Alex Cohn

> On 17 May 2012 04:38, Alex Cohn <alexcohn at netvision.net.il> wrote:
>> On May 16, 2012 1:45 PM, <amir.rouhi at rmit.edu.au> wrote:
>> >
>> > 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?
>> Which player displays this behavior?
>> Alex
> --
> Amir H. Rouhi
> PhD Student/ CSIT RMIT University
> Room: 14-09-04
> http://raws.adc.rmit.edu.au/~s3288736/blog2/

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