FFmpegFrameRecorder, how to set frame rate

[p...@seznam.cz]

Hi,

I`m trying to use FFmpegFrameGrabber to get a video (*.mp4), make some changes and record it back, using FFmpegFrameRecorder. However, I`m still not able to get it right. I have issue with setting frame rate to the recorder. When I use " recorder.setFrameRate(grabber.getFrameRate()); " the recorder frame rate is set to value labelled " tbr " in video input. And the true value, which is labelled by "fps" is not accessible by any getter. 

When I set the frame rate manualy to the right value than the recorder works fine.

I`ve also used 

long timeStamp = grabber.getTimestamp();

recorder.setTimestamp(timeStamp);

to correct the time between frames. And it worked fine until I`ve tested on another android device where it triggered error:

av_interleaved_write_frame error -22 while writing interleaved video frame

I`m asking for advice, how to set up the frame rate for the FFmpegFrameRecorder right?

Thank`s 

Peter 

[Samuel Audet]

Hello,

On 11/19/2013 08:21 AM, p...@seznam.cz wrote:
> to correct the time between frames. And it worked fine until I`ve tested on another android device where it triggered error:
> av_interleaved_write_frame error -22 while writing interleaved video frame

You should try this instead:
long timeStamp = grabber.getTimestamp();
if (timeStamp > recorder.getTimestamp()) {
recorder.setTimestamp(timeStamp);

}

> I`m asking for advice, how to set up the frame rate for the FFmpegFrameRecorder right?

I'm not sure myself :) Could you please post an issue here:
http://code.google.com/p/javacv/issues/
and attach a small sample video file that doesn't work correctly so that
I may take a look for myself and fix this? Thanks!

Samuel

[p...@seznam.cz]

Hi,

thank you very much for reply and the advice. With the "If" I`m not getting the error anymore. I`ll post the issue, however with the setting the timestamp it should work fine.

Regards,

Petr

Dne úterý, 19. listopadu 2013 0:21:21 UTC+1 p...@seznam.cz napsal(a):