[Libav-user] programmatic frame rate control?

[Blake Senftner]

I’m studying this right now: http://stackoverflow.com/search?q=libav+pts+dts

The top result looks promising. Getting timecodes right look like a challenge...

Sincerely,
-Blake Senftner
soft ware

> On Dec 22, 2016, at 10:13 AM, Eric Lee <erclee2 at gmail.com> wrote:
> 
> You could try using an external timer and parameters from the AVFrame and AVCodecContext such as pts, duration, and framerate to control the presentation of decoded frames.
> 
> Eric
> 
> On Thu, Dec 22, 2016 at 12:50 PM, Blake Senftner <bsenftner at earthlink.net> wrote:
> I found a GUI bug that was eating my frame rate. Now I have the opposite problem of frames being delivered too fast… A 3 minute 1920x1080 h264 video plays back in 9 seconds…. any timing related suggestions are welcome.
> 
> Sincerely,
> -Blake Senftner
> Bug Generator
> 
> > On Dec 21, 2016, at 9:31 AM, Blake Senftner <bsenftner at earthlink.net> wrote:
> >
> > I have been able to write a little video player library that handles any type of video file, USB web cam, or IP camera or live stream… but the playback frame rate is never above 15 fps.
> >
> > Even with a 160x40 video file, h264 with nothing but a ticking 29.97 timecode, it plays back at 15 fps while consuming < 2% cpu.
> >
> > I’ve tried AVDictionary settings for framerate, which are not being picked up (left in the AVDictinary.)
> >
> > Lacking any direct frame rate information, what AVDictionary key/values have you found that improve and/or make an improving difference in your efforts to playback video?
> >
> > Sincerely,
> > -Blake Senftner
> > 疯狂的计算机科学家
> > _______________________________________________
> > Libav-user mailing list
> > Libav-user at ffmpeg.org
> > http://ffmpeg.org/mailman/listinfo/libav-user
> 
> _______________________________________________
> Libav-user mailing list
> Libav-user at ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/libav-user
> 
> _______________________________________________
> Libav-user mailing list
> Libav-user at ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/libav-user