> A quick calculation gave me the impression that the number of decoded
frames mostly matches the expectation ((8x60+9.5)x3/1001) - what did
you calculate?
Thanks for the reply Carl, and I apologize. I had pasted two commands that
used slightly different files.
We had an 'original' file
I have a video that is supposedly not VFR (ffmpeg vfrdet command and output
pasted at the very bottom), but the number of extracted frames, or
frame count with ffprobe, doesn't match what would be expected based on
frame rate and duration by a large margin (off by a factor of nearly 3x).
Please
A bit more information on this issue, after created the concatenated file
with the following commands [1] and [2], pasted at bottom, if I
print pkt_pts_time via ffprobe with commands [3] and [4], I see that the
timestamp of frame 302 is what is throwing things off when I compare the
two list of
.jpg
On Thu, Oct 31, 2019 at 11:32 AM Carl Eugen Hoyos
wrote:
>
>
> > Am 31.10.2019 um 14:55 schrieb Jon Beyer :
> >
> > I'm trying to understand the basics of splitting a file on I frames and
> > then concatenating the smaller files back together.
>
> T
are inserted at the beginning of different chunks. There are 14
chunks in all, so it isn't an extra frame at each chunk, as there are only
three extra frames in the concatenated file.
Thanks again,
Jon
On Thu, Oct 31, 2019 at 1:22 PM Jon Beyer wrote:
> Thanks Carl, here is the full output f
I'm trying to understand the basics of splitting a file on I frames and
then concatenating the smaller files back together. I am using the
commands below to split a basic .mp4 file with the "-f segment" option, and
then I use "-f concat" to join them. I then extract all frames from the
file as
I'd like to be able to replace the audio with constant tones for certain
intervals of a video. As an example, I might have a thirty second video,
and want to insert 440 Hz from 5 seconds to 10 seconds and again from 15 to
20 seconds. Assume that I already have the 440 Hz tone in a .wav file that
