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lavc/libx264: Use avctx->framerate first for frame rate setting 

perfer avctx->framerate first than use avctx->time_base when setting
the frame rate to encoder. 1/time_base is not the average frame rate
if the frame rate is not constant. In this case, we need to setting
avctx->framerate and avctx->time_base both, but avctx->framerate not
equal to 1/(avctx->time_base).

Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
This commit is contained in:
Jun Zhao 2019-04-27 18:45:23 +08:00
parent ab648f79c8
commit 1e6338c2da
1 changed files with 7 additions and 2 deletions
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5
libavcodec/libx264.c
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@ -821,8 +821,13 @@ FF_ENABLE_DEPRECATION_WARNINGS
x4->params.vui.i_sar_height = sh;
x4->params.i_timebase_den = avctx->time_base.den;
x4->params.i_timebase_num = avctx->time_base.num;
if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
x4->params.i_fps_num = avctx->framerate.num;
x4->params.i_fps_den = avctx->framerate.den;
} else {
x4->params.i_fps_num = avctx->time_base.den;
x4->params.i_fps_den = avctx->time_base.num * avctx->ticks_per_frame;
}
x4->params.analyse.b_psnr = avctx->flags & AV_CODEC_FLAG_PSNR;