Hi,
This is most helpful, thanks a lot! I whish I had more time for this
project...
Best regards, Jonas
On Sat, Jun 30, 2012 at 3:12 AM, Michael Zucchi wrote:
>
> I'm pretty sure you shouldn't use approximate numbers (floats or doubles)
> for this.
>
> There's a bunch of AVRational related and
I'm pretty sure you shouldn't use approximate numbers (floats or
doubles) for this.
There's a bunch of AVRational related and exact-precision arithmetic
functions in libavutil for this purpose. see libavutil/mathematics.h
libavutil/rational.h.
On 29/06/12 21:51, Hector Alonso wrote:
Hi,
Hi,
I've made myself one LibAvUtils class with this two functions implemented
like this:
int64_t LibAvUtils::frameNumberToPts(uint uiFrameNum, float fFps)
{
if (fFps <= 0) return 0;
return (int64_t)uiFrameNum * (int64_t)(((float)AV_TIME_BASE) / fFps);
}
//---
On Jun 29, 2012, at 15:00 , Jonas Elofsson wrote:
> Hi,
>
> Thanks. I guess this means "pts"?
>
> I have no time to check again at the moment, but I did some tests with this
> as well.
>
> The video I tested with reported 25 frames per second and the timebase 1/25.
> Shouldn't this give me
Hi,
Thanks. I guess this means "pts"?
I have no time to check again at the moment, but I did some tests with this
as well.
The video I tested with reported 25 frames per second and the timebase
1/25. Shouldn't this give me the pts 1,2,3,4... etc for each frame? Instead
i got (if my memory serves
Hi, you have to use the decoding or presentation timestamp and calculate it
from the frame rate (time base of the stream).
On Thu, Jun 28, 2012 at 10:09 AM, Jonas Elofsson wrote:
> Hi,
>
> Resending this, it seems my first post never got through...
>
> I'm taking the first, trembling steps to us
Le primidi 11 messidor, an CCXX, Jonas Elofsson a écrit :
> But, what I cannot find is a way to see what frame (displayed framenumber)
> I just decoded. Coded framenumber I can see, but they are (of course) not
> useable directly, and also are not available for all formats. Displayed
> framenumber
Hi,
Resending this, it seems my first post never got through...
I'm taking the first, trembling steps to use FFMpeg in Qt, primary for a
video editing SW. So far it is working good, I can decode frames to a
QImage in Qt and display them on a label. Even video playback works good on
a QLabel up to
