HTML5 video.currentTime not setting properly

I have an example HTML5 webpage

<html>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.0/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">

function log(msg) { console.log(msg); }

$(document).ready(function() {
var video = document.getElementById("video");
video.load();
video.addEventListener('loadedmetadata', function(){
  video.currentTime = 95.061728395;
});
});
</script>
<body>
<video id="video" preload="none" height="360" width="640">
<source src="news.mp4">
  Your browser does not support this video.
</video>
</body>
</html>

which manually sets the currentTime property of the video tag, however it is looking for a different frame than the one I get using OpenCV / mplayer and aiming for the same time.

Using javascript, I am looking for a video at a valid time, and I am given a frame, which is usually 2 frames before the frame, which should be. I use

video.currentTime = 95.061728

in the browser and

echo -n p | mplayer -ss 95.061728395 static/news.mp4

like a team that replicates a frame. OpenCV code matches what the mplayer frame is looking for.

From mplayer video format:

Playing static / news.mp4.  
libavformat version 53.21.1 (external)  
Mismatching header version 53.19.0  
libavformat file format detected.  
[lavf] stream 0: video (h264), -vid 0  
[lavf] stream 1: audio (aac), -aid 0, -alang und  
VIDEO:  [H264]  640x360  24bpp  29.970 fps  500.4 kbps (61.1 kbyte/s)  
Clip info:  
 major_brand: mp42  
 minor_version: 0  
 compatible_brands: isommp42  
 creation_time: 2011-09-27 14:41:05  
Load subtitles in static  
Opening video decoder: [ffmpeg] FFmpeg libavcodec codec family  
libavcodec version 53.35.0 (external)  
Mismatching header version 53.32.2  
Selected video codec: [ffh264] vfm: ffmpeg (FFmpe`enter code here`g H.264)  
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders  
AUDIO: 44100 Hz, 2 ch, s16le, 96.0 kbit/6.80% (ratio: 12001->176400)  
Selected audio codec: [ffaac] afm: ffmpeg (FFmpeg AAC (MPEG-2/MPEG-4 Audio))  
AO: [pulse] 44100Hz 2ch s16le (2 bytes per sample)  
Starting playback...  
Unsupported PixelFormat 61  
Unsupported PixelFormat 53  
Unsupported PixelFormat 81  
Movie-Aspect is undefined - no prescaling applied.  
VO: [vdpau] 640x360 => 640x360 Planar YV12   

Chrome 30.0.1599.114 Linux g6 3.2.0-54-generi# 82-Ubuntu SMP

!

+4
1

-

, FPS 29.97. , Chrome ( ffmpeg mp4) FPS 30 FPS. , , , 60 . , "" 30 FPS, 29,97, NTSC ( , ).

:

@30.00 FPS frame 2852
@29.97 FPS frame 2849

, (3 ).

, :

newTime = oldTime / 30 * 29.97;

:

95.061728395 / 30 * 29.97 = 94.96666666660501

( currentTime) 30 FPS, :

94.96666666660501 * 30 => frame 2849

29.97 FPS.

+2

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