Steffen Ebersbach-2 wrote: > >> wl2776 wrote: >> >> So, it is possible to force input frame rate. How can I do it in my >> application? >> > > Hello, > > in an own application you have to do this resampling by your self. If > you have 2fps input and 25fps output, it means that you have to write > each picture from the input 12,5 times to the output. In fact this is > not possible, so you have to do 12 and 13 pictures for each second. The > code should look like this >
Thank you for the answer, but you've misunderstood me. My problem is that functions avformat_open_input() and avformat_find_stream_info() incorrectly determine frame rate, incorrectly assign values to AVFormatContext/AVStream members (time_base, what else, I don't know) and, since that, av_read_frame returns frames having incorrect PTS/DTS. I tried using av_rescale_q() to recalculate timestamps, but the resulting value are like the following (dts, pts): (0, 0), (0, 0), (0, 0), (1, 1), (1, 1). And when I pass the last AVPacket, having pts = dts = 1, to the av_interleaved_write_frame(), it complains that "application has provided non-monotonically increasing timestamps". -- View this message in context: http://libav-users.943685.n4.nabble.com/How-can-I-emulate-r-switch-programmatically-tp3874115p3889356.html Sent from the libav-users mailing list archive at Nabble.com. _______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user
