Messages in this thread | | | Date | Wed, 16 Sep 2020 10:43:42 -0300 | From | "Daniel W. S. Almeida" <> | Subject | Re: [PATCH] media: vidtv: fix build on 32bit architectures |
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Hi Mauro, Geert,
> That doesn't seem to be the right thing to do here. > > Assuming that sampling rate is 48 kHz, you'll > have duration = 1.875, which would be rounded to 1. > > In other words, the above is identical to: > > au->pts = count > > Now, I don't know from where that CLOCK_UNIT_90KHZ came from. >
Mauro, here's my current understanding:
The values for PTS have to be defined in terms of a 90khz clock.
So for 30fps video, the values for PTS per frame would be:
frame_num/30 * 90000
so 0, 3000, 6000, 9000...etc
The same math is being used here for audio, but instead we have the total audio sample count and a 48000 samples/sec
I did miss this rounding error though, I'm sorry.
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