Fix frame rate rounding in ffmpeg wrapper (#9023)

6 years ago · 255b20f6de
parent 1059735bfb
commit 255b20f6de
1 changed files with 2 additions and 2 deletions
--- a/modules/videoio/src/cap_ffmpeg_impl.hpp
+++ b/modules/videoio/src/cap_ffmpeg_impl.hpp
@ -1541,7 +1541,7 @@ static AVStream *icv_add_video_stream_FFMPEG(AVFormatContext *oc,
       identically 1. */
    frame_rate=(int)(fps+0.5);
    frame_rate_base=1;
-    while (fabs((double)frame_rate/frame_rate_base) - fps > 0.001){
+    while (fabs(((double)frame_rate/frame_rate_base) - fps) > 0.001){
        frame_rate_base*=10;
        frame_rate=(int)(fps*frame_rate_base + 0.5);
    }
@ -2374,7 +2374,7 @@ AVStream* OutputMediaStream_FFMPEG::addVideoStream(AVFormatContext *oc, CV_CODEC

    int frame_rate = static_cast<int>(fps+0.5);
    int frame_rate_base = 1;
-    while (fabs(static_cast<double>(frame_rate)/frame_rate_base) - fps > 0.001)
+    while (fabs((static_cast<double>(frame_rate)/frame_rate_base) - fps) > 0.001)
    {
        frame_rate_base *= 10;
        frame_rate = static_cast<int>(fps*frame_rate_base + 0.5);