Hello,
I am encoding video with a new framerate expecting a slowdown or speed up
in the final result.
Odd thing is: "Videos" or ffmpeg player seems to give me expected results
while VLC plays the video at the same-ish framerate (makes no difference
what FPS I set)
Encoder setup:
out_codec = avcodec_find_encoder(AV_CODEC_ID_H264);
if (!out_codec) {
cout << "out_codec found" << endl;
exit(1);
}
pOutputContext = avcodec_alloc_context3(out_codec);
if (!pOutputContext) {
cout << "Could not allocate video codec context" << endl;
exit(1);
}
// put sample parameters
pOutputContext->bit_rate = FILE_OUTPUT_WIDTH * FILE_OUTPUT_HEIGHT * 4;
pOutputContext->width = FILE_OUTPUT_WIDTH;
pOutputContext->height = FILE_OUTPUT_HEIGHT;
// frames per second
pOutputContext->time_base.den = OUT_FRAMERATE; //FPS
pOutputContext->time_base.num = 1;
pOutputContext->gop_size = 10;
pOutputContext->max_b_frames = 1;
pOutputContext->pix_fmt = AV_PIX_FMT_YUV420P;
av_opt_set(pOutputContext->priv_data, "preset", "slow", 0);
Any thoughts what might cause this behaviour?
/Kris
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