Milliseconds to Seconds Minutes

is there a way to take a number (specifically the position in
milliseconds that a sound has been playing) and convert it into
minute:second format? any help?
jeff

Hi Jeff
Here a code snippet that I'm using for my flash mp3 player.
function timer(sound_obj) {
time = sound_obj.position/1000;
min = Math.floor(time/60);
min = (min<10) ? "0"+min : min;
sec = Math.floor(time%60);
sec = (sec<10) ? "0"+sec : sec;
timeDisplay_txt.text = min+":"+sec+"/"+totalDuration;
function duration() {
timed = _root.sound_mc.sound_obj.duration/1000;
mind = Math.floor(timed/60);
mind = (mind<10) ? "0"+mind : mind;
secd = Math.floor(timed%60);
secd = (secd<10) ? "0"+secd : secd;
totalDuration = mind+":"+secd;
keep in mind to create a textfield with the instancename of
"timeDisplay_txt" and to call the timer function at least every
second using the setInterval statement.
Tiago

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Hello
I have string (string a = 1.15.67) which represents time (minutes. seconds. milliseconds).
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Edited by: user10496629 on 17.03.2011 14:03

jduprez wrote:
To be honest, my knowledge of FP arithmetic comes mostly from reading this forum, and I'm sure you contributed to such discussions in the past - so I'm surprised to read your arguments.
Except myself I would use integral types (int, or long to be conservative) to hold the number of seconds/milliseconds. I don't see what double would bring except inaccurracy that will build up when you add/combine multiple durations.Yeah, but given that he wants the end result to include a fractional piece, he's going to have inaccuracies anyway?
Not if he stores the number of milliseconds, and only formats it at display time.Oh, I see what you're saying now.
Still, unless he's dealing with very large scales, he can store as a double, format for display, and any inaccuracies will wash out in the format. That is, even though 12345.67 cannot be stored in a double, most likely he will be able to ignore that, store 12345.67000000001, and format it so that it displays as 12345.67.
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>
And it's highly likely that the integer numbers of minutes, seconds, and millis that are represented individually will be exactly representable by double.
In fact, if he keeps millis and seconds in their expected ranges, it's guaranteed that they are, and the only possible parsing inaccuracy is in minutes, and even then, the entire range of int can be exactly represented, so it'd be an awful lot of minutes before he started losing precision there.Either I misunderstand you, or what you say is not correct:
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~~~~~~~~~~~~~~~
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Bob_Schor wrote:
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Hi,
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import cs1.Keyboard;
public class Tim
public static void main (String[] args)
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My suspicion is a rounding error. When you do the
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OK, I tried all the test on Dr Smokes Page, and this is the same.
I tested even open firmware
set-defaults
reset-nvram
reset-all
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Sat Nov 18 15:53:42 2006
panic(cpu 1 caller 0x000A50C8): simple lock (0x0038CFD4) deadlock detection, pc=0x0003D754
Latest stack backtrace for cpu 1:
Backtrace:
0x00095718 0x00095C30 0x0002683C 0x000A50C8 0x0003D754 0x000B4654 0x000ADDD4 0x000AC348
Proceeding back via exception chain:
Exception state (sv=0x20FA5500)
PC=0x00033DE8; MSR=0x00009030; DAR=0x01294000; DSISR=0x42000000; LR=0x00033DE8; R1=0x0CF93E30; XCP=0x00000024 (0x900 - Decrementer)
Backtrace:
0x00033D90 0x000A9914
Exception state (sv=0x2094E000)
PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000; LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)
Kernel version:
Darwin Kernel Version 8.7.0: Fri May 26 15:20:53 PDT 2006; root:xnu-792.6.76.obj~1/RELEASE_PPC
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Message Edited by cir09uevhe on 09-26-2007 10:09 PM
Message Edited by cir09uevhe on 09-26-2007 10:10 PM

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This is it:
*This catastrophe brought to you by SrA Meyerin.
*Proximo Satis pro administatio.
package awesomedate;
//The following are imported for the toFormattedString(), toUtilDate(), toSQLDate, and toCalendar() methods, respectively.
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.GregorianCalendar;
import java.sql.*;
import java.util.TimeZone;
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 private int year;
 //The following six variables are fairly self explanatory. I'll explain them anyway.
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 * but mostly it is used to make my code more readable.
 public static final long MILLIS_IN_LEAP_YEAR = 31622400000L;
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 *Milliseconds in one hour. This can be passed to the "adjustDate()" method
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 long theseMillis = this.millis;
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 while (theseMillis >= nextYear)
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 theseMillis = theseMillis - MILLIS_IN_LEAP_YEAR;
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 else
 theseMillis = theseMillis - MILLIS_IN_YEAR;
 if (isLeapYear(year + 1))
 nextYear = MILLIS_IN_LEAP_YEAR;
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 *Calculating the year from before 1970 must be done differently. It's pretty much just inverted.
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 long theseMillis = this.millis;
 year = 1970;
 long nextYear = MILLIS_IN_YEAR;
 while (theseMillis <= 0)
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 theseMillis = theseMillis + MILLIS_IN_LEAP_YEAR;
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 else
 theseMillis = theseMillis + MILLIS_IN_YEAR;
 if (isLeapYear(year - 1))
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 *Just what it sounds like. Pass it the number of milliseconds past the epoch and it will calculate the date based on that.
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 this.millis = millis;
 if (millis >= 0)
 setYearAfter1970();
 else
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 public long getTimeInMillis()
 return this.millis;
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 return this.year;
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 this.year = year;
 long theseMillis = 0;
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 for (int cntr = 1970; cntr < this.year; cntr++)
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 else
 theseMillis = theseMillis + MILLIS_IN_YEAR;
 else
 for (int cntr = 1970; cntr > this.year; cntr--)
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 theseMillis = theseMillis - MILLIS_IN_LEAP_YEAR;
 else
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 if (isLeapYear(year))
 daysInMonth[1] = 29;
 else
 daysInMonth[1] = 28;
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 if (month < 0 || month > 11)
 throw new ArrayIndexOutOfBoundsException(month);
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 int days = 0;
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 else
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 days = days + daysInMonth[cntr];
 millisAfterYear = days * MILLIS_IN_DAY + 1;
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 long theseMillis = millisAfterYear;
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 if (day < 1 || day > daysInMonth[getMonth()])
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 setDayOfMonth(getDayOfMonth());
 long addMillis = MILLIS_IN_HOUR * hour;
 millisAfterYear = millisAfterYear + addMillis;
 setTimeInMillis(getTimeInMillis() + addMillis);
 *Returns the hour (but not how many minutes past the hour).
 public int getHour()
 long millisAfterDay = millisAfterYear % MILLIS_IN_DAY;
 return (int)(millisAfterDay / MILLIS_IN_HOUR);
 *Set the minutes past the hour. Works 0-59.
 public void setMinute(int minute)
 if (minute < 0 || minute > 59)
 throw new ArrayIndexOutOfBoundsException(minute);
 setHour(getHour());
 long addMillis = MILLIS_IN_MINUTE * minute;
 millisAfterYear = millisAfterYear + addMillis;
 setTimeInMillis(getTimeInMillis() + addMillis);
 *Returns the minutes past the hour, 0-59.
 public int getMinute()
 long millisAfterHour = millisAfterYear % MILLIS_IN_HOUR;
 return (int)(millisAfterHour / MILLIS_IN_MINUTE);
 *Sets the seconds past the minute, 0-59.
 public void setSecond(int second)
 if (second < 0 || second > 59)
 throw new ArrayIndexOutOfBoundsException(second);
 setMinute(getMinute());
 long addMillis = MILLIS_IN_SECOND * second;
 millisAfterYear = millisAfterYear + addMillis;
 setTimeInMillis(getTimeInMillis() + addMillis);
 *Returns the seconds past the minute, 0-59.
 public int getSecond()
 long millisAfterMinute = millisAfterYear % MILLIS_IN_MINUTE;
 return (int)(millisAfterMinute / MILLIS_IN_SECOND);
 *The more commonly seen set method of other date objects. Sets the date/time to 00:00 of the year/month/day passed. Convenience method
 *for setDate(int year, int month, int day, int hour, int minute, int second).
 public void setDate(int year, int month, int day)
 setDate(year, month, day, 0 , 0 , 0);
 *Sets every date/time field.
 public void setDate(int year, int month, int day, int hour, int minute, int second)
 setYear(year);
 setMonth(month);
 setDayOfMonth(day);
 setHour(hour);
 setMinute(minute);
 setSecond(second);
 *Returns yes if the stored date is a leap year. A leap year is every year that is divisible by four unless it is divisible by 100
 *unless it is also divisible by 400.
 public boolean isLeapYear()
 return isLeapYear(this.year);
 *For internal use. Returns if the passed year meets the criteria for a leap year.
 private boolean isLeapYear(int year)
 boolean leapYear = false;
 if (year % 4 == 0)
 if (year % 100 != 0)
 leapYear = true;
 else if (year % 400 == 0)
 leapYear = true;
 return leapYear;
 *Returns the difference in milliseconds between the time stored in this object and the millis passed to this method.
 public long getDifferenceInMillis(long millis)
 return getTimeInMillis() - millis;
 *Returns the difference in milliseconds between this date and the date passed to this method.
 public long getDifferenceInMillis(AwesomeDate otherDate)
 return getDifferenceInMillis(otherDate.getTimeInMillis());
 *Designed to be a wrapper method for the getDifferenceInMillis method. This method changes millis into years/days/whatever. Pass
 *the number of milliseconds you have to convert in the first parameter. The second parameter should be the type of denomination you
 *want (year, day, whatever). Use the MILLIS_IN_* fields associated with this object. Also bear in mind when workin with years that
 *some years are leap years, so in extreme cases of differences of 365+ years you may gain/lose a year.
 public static int toGreaterDenom(long millis, long denom)
 return (int)(millis / denom);
 * The first argument is how many of whatever (days, months, years, etc.) to add (use negative numbers to subtract). For the second
 * argument pass one of the MILLIS_IN_* fields. Thus, to add two hours would be
 * <code>
 * AwesomeDate.adjustDate(2, AwesomeDate.MILLIS_IN_HOUR);
 * </code>
 public void adjustDate(int amount, long typeMillis)
 setTimeInMillis(this.millis + amount * typeMillis);
 *Returns an object of type java.util.Date set to the date/time stored here.
 public java.util.Date toUtilDate()
 long offset = TimeZone.getDefault().getRawOffset();
 return new java.util.Date(getTimeInMillis() + -1 * offset);
// return new java.util.Date(getTimeInMillis());
 *Returns an object of type GregorianCalendar set to the date/time stored here.
 public GregorianCalendar toGregorianCalendar()
 long offset = TimeZone.getDefault().getRawOffset();
 GregorianCalendar cal = new GregorianCalendar();
 cal.setTimeInMillis(getTimeInMillis() - offset);
 return cal;
 *Returns an object of type java.sql.Date set to the date/time stored here.
 public java.sql.Date toSQLDate()
 long offset = TimeZone.getDefault().getRawOffset();
 return new java.sql.Date(getTimeInMillis() - offset);
 /** Format the date using the string that you pass. Works just like the SimpleDateFormat object. Infact, it uses one! Heres
 *how it works:
 *Letter Date or Time Component Presentation Examples 
 *G Era designator Text AD 
 *y Year Year 1996; 96 
 *M Month in year Month July; Jul; 07 
 *w Week in year Number 27 
 *W Week in month Number 2 
 *D Day in year Number 189 
 *d Day in month Number 10 
 *F Day of week in month Number 2 
 *E Day in week Text Tuesday; Tue 
 *a Am/pm marker Text PM 
 *H Hour in day (0-23) Number 0 
 *k Hour in day (1-24) Number 24 
 *K Hour in am/pm (0-11) Number 0 
 *h Hour in am/pm (1-12) Number 12 
 *m Minute in hour Number 30 
 *s Second in minute Number 55 
 *S Millisecond Number 978 
 *z Time zone General time zone Pacific Standard Time; PST; GMT-08:00 
 *Z Time zone RFC 822 time zone -0800 
 public String toFormattedString(String format)
 SimpleDateFormat formattage = new SimpleDateFormat(format);
 return formattage.format(toUtilDate());
 *I overrode the toString method. Now it tells everyone how awesome my AwesomeDate is.
 public String toString()
 String output = "John's Awesome Date!";
 output = output + " Millis: " + getTimeInMillis();
 output = output + " Year: " + getYear();
 output = output + " Month: " + getMonth();
 output = output + " Date: " + getDayOfMonth();
 output = output + " Time: ";
 if (getHour() < 10)
 output = output + "0" + getHour();
 else
 output = output + getHour();
 if (getMinute() < 10)
 output = output + "0" + getMinute();
 else
 output = output + getMinute();
 output = output + " Seconds: " + getSecond();
 return output;
 public static void main(String[] psvm)
 AwesomeDate blah = new AwesomeDate();
 GregorianCalendar blah1 = new GregorianCalendar();
 GregorianCalendar blah2 = new GregorianCalendar();
}

The reason Callendar is so complicated is that it is trying to solve a very complicated problem.
You don't appear to support leap seconds (of which there can be upto 2 in any time interval)
http://www.timeanddate.com/time/leapseconds.html
Some of your code will not work for large dates very well (seems to iterate over the years). Try using your date class for astronomical or geological calculations. them big numbers will make your code slow at the moment.
You don't seem to support timezones or transitory offsets (BST vs GMT). You most definately don't handle changes to timezone offsets that have occured in the past or historical daylight savings time offsets (they have not always been the same)
The difference between two calendars is a "duration" a duration means nothing unless it is applied to a caledar/date (although you may be able to get away with it if the duration is always stored in millis)

Milliseconds to Seconds Minutes

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