How to use

getTimescale

method

in

us.ihmc.codecs.demuxer.MP4VideoDemuxer

private long getVideoTimestamp(long timestamp)
{
 currentlyShowingIndex = Arrays.binarySearch(robotTimestamps, timestamp);
 if (currentlyShowingIndex < 0)
 {
   int nextIndex = -currentlyShowingIndex + 1;
   if ((nextIndex < robotTimestamps.length) && (Math.abs(robotTimestamps[-currentlyShowingIndex] - timestamp) > Math.abs(robotTimestamps[nextIndex])))
   {
    currentlyShowingIndex = nextIndex;
   }
   else
   {
    currentlyShowingIndex = -currentlyShowingIndex;
   }
 }
 if (currentlyShowingIndex < 0)
   currentlyShowingIndex = 0;
 if (currentlyShowingIndex >= robotTimestamps.length)
   currentlyShowingIndex = robotTimestamps.length - 1;
 currentlyShowingRobottimestamp = robotTimestamps[currentlyShowingIndex];
 long videoTimestamp = videoTimestamps[currentlyShowingIndex];
 if (hasTimebase)
 {
   videoTimestamp = (videoTimestamp * bmdTimeBaseNum * demuxer.getTimescale()) / (bmdTimeBaseDen);
 }
 return videoTimestamp;
}

private long getVideoTimestamp(long timestamp)
{
 currentlyShowingIndex = Arrays.binarySearch(robotTimestamps, timestamp);
 if (currentlyShowingIndex < 0)
 {
   int nextIndex = -currentlyShowingIndex + 1;
   if ((nextIndex < robotTimestamps.length) && (Math.abs(robotTimestamps[-currentlyShowingIndex] - timestamp) > Math.abs(robotTimestamps[nextIndex])))
   {
    currentlyShowingIndex = nextIndex;
   }
   else
   {
    currentlyShowingIndex = -currentlyShowingIndex;
   }
 }
 if (currentlyShowingIndex < 0)
   currentlyShowingIndex = 0;
 if (currentlyShowingIndex >= robotTimestamps.length)
   currentlyShowingIndex = robotTimestamps.length - 1;
 currentlyShowingRobottimestamp = robotTimestamps[currentlyShowingIndex];
 long videoTimestamp = videoTimestamps[currentlyShowingIndex];
 if (hasTimebase)
 {
   videoTimestamp = (videoTimestamp * bmdTimeBaseNum * demuxer.getTimescale()) / (bmdTimeBaseDen);
 }
 return videoTimestamp;
}

private long getVideoTimestamp(long timestamp)
{
 currentlyShowingIndex = Arrays.binarySearch(robotTimestamps, timestamp);
 if (currentlyShowingIndex < 0)
 {
   int nextIndex = -currentlyShowingIndex + 1;
   if ((nextIndex < robotTimestamps.length) && (Math.abs(robotTimestamps[-currentlyShowingIndex] - timestamp) > Math.abs(robotTimestamps[nextIndex])))
   {
    currentlyShowingIndex = nextIndex;
   }
   else
   {
    currentlyShowingIndex = -currentlyShowingIndex;
   }
 }
 if (currentlyShowingIndex < 0)
   currentlyShowingIndex = 0;
 if (currentlyShowingIndex >= robotTimestamps.length)
   currentlyShowingIndex = robotTimestamps.length - 1;
 currentlyShowingRobottimestamp = robotTimestamps[currentlyShowingIndex];
 long videoTimestamp = videoTimestamps[currentlyShowingIndex];
 if (hasTimebase)
 {
   videoTimestamp = (videoTimestamp * bmdTimeBaseNum * demuxer.getTimescale()) / (bmdTimeBaseDen);
 }
 return videoTimestamp;
}

private static int getFrameRate(MP4VideoDemuxer demuxer) throws IOException
{
 demuxer.seekToFrame(0);
 long startPts = demuxer.getCurrentPTS();
 demuxer.seekToFrame(1);
 long endPts = demuxer.getCurrentPTS();      
 
 double step = endPts - startPts;
 int rate = (int)Math.round((double)demuxer.getTimescale() / step);
 
 System.out.println("Framerate is " + rate);
 return rate;
 }

private static int getFrameRate(MP4VideoDemuxer demuxer) throws IOException
{
 demuxer.seekToFrame(0);
 long startPts = demuxer.getCurrentPTS();
 demuxer.seekToFrame(1);
 long endPts = demuxer.getCurrentPTS();      
 
 double step = endPts - startPts;
 int rate = (int)Math.round((double)demuxer.getTimescale() / step);
 
 System.out.println("Framerate is " + rate);
 return rate;
 }

private static int getFrameRate(MP4VideoDemuxer demuxer) throws IOException
{
 demuxer.seekToFrame(0);
 long startPts = demuxer.getCurrentPTS();
 demuxer.seekToFrame(1);
 long endPts = demuxer.getCurrentPTS();      
 
 double step = endPts - startPts;
 int rate = (int)Math.round((double)demuxer.getTimescale() / step);
 
 System.out.println("Framerate is " + rate);
 return rate;
 }