diff -crB youtube-dl-github/youtube-dl youtube-dl-modified/youtube-dl
*** youtube-dl-github/youtube-dl    2011-09-12 20:09:03.515998416 -0400
--- youtube-dl-modified/youtube-dl  2011-09-12 20:07:00.957530608 -0400
***************
*** 435,440 ****
--- 435,441 ----
    retries:          Number of times to retry for HTTP error 5xx
    continuedl:       Try to continue downloads if possible.
    noprogress:       Do not print the progress bar.
+   percentstop:     Stop at a specific percent into the download.
    playliststart:    Playlist item to start at.
    playlistend:      Playlist item to end at.
    logtostderr:      Log messages to stderr instead of stdout.
***************
*** 482,495 ****
        return '%6s' % ('%3.1f%%' % (float(byte_counter) / float(data_len) * 100.0))

    @staticmethod
!   def calc_eta(start, now, total, current):
        if total is None:
            return '--:--'
        dif = now - start
        if current == 0 or dif < 0.001: # One millisecond
            return '--:--'
        rate = float(current) / dif
!       eta = long((float(total) - float(current)) / rate)
        (eta_mins, eta_secs) = divmod(eta, 60)
        if eta_mins > 99:
            return '--:--'
--- 483,499 ----
        return '%6s' % ('%3.1f%%' % (float(byte_counter) / float(data_len) * 100.0))

    @staticmethod
!   def calc_eta(self, start, now, total, current):
        if total is None:
            return '--:--'
        dif = now - start
        if current == 0 or dif < 0.001: # One millisecond
            return '--:--'
        rate = float(current) / dif
!       part = float(self.params.get('percentstop',100)) / 100 * float(total)
!       finaltotal = float(total) - float(part)
!
!       eta = long((float(finaltotal) - float(current)) / rate)
        (eta_mins, eta_secs) = divmod(eta, 60)
        if eta_mins > 99:
            return '--:--'
***************
*** 926,931 ****
--- 930,936 ----
        byte_counter = 0 + resume_len
        block_size = 1024
        start = time.time()
+       percentstop = 0;
        while True:
            # Download and write
            before = time.time()
***************
*** 954,962 ****

            # Progress message
            percent_str = self.calc_percent(byte_counter, data_len)
!           eta_str = self.calc_eta(start, time.time(), data_len - resume_len, byte_counter - resume_len)
            speed_str = self.calc_speed(start, time.time(), byte_counter - resume_len)
            self.report_progress(percent_str, data_len_str, speed_str, eta_str)

            # Apply rate limit
            self.slow_down(start, byte_counter - resume_len)
--- 959,972 ----

            # Progress message
            percent_str = self.calc_percent(byte_counter, data_len)
!           eta_str = self.calc_eta(self, start, time.time(), data_len - resume_len, byte_counter - resume_len)
            speed_str = self.calc_speed(start, time.time(), byte_counter - resume_len)
            self.report_progress(percent_str, data_len_str, speed_str, eta_str)
+
+           if int(round(float(string.replace(percent_str,'%','')))) > int(self.params.get('percentstop',100)):
+               percentstop = 1
+               self.to_screen(u'\nDone. Downloaded at least %s percent.' % str(self.params.get('percentstop',100)))
+               break

            # Apply rate limit
            self.slow_down(start, byte_counter - resume_len)
***************
*** 966,972 ****
            return False
        stream.close()
        self.report_finish()
!       if data_len is not None and byte_counter != data_len:
            raise ContentTooShortError(byte_counter, long(data_len))
        self.try_rename(tmpfilename, filename)

--- 976,982 ----
            return False
        stream.close()
        self.report_finish()
!       if data_len is not None and byte_counter != data_len and percentstop == 0:
            raise ContentTooShortError(byte_counter, long(data_len))
        self.try_rename(tmpfilename, filename)

***************
*** 3379,3384 ****
--- 3389,3396 ----
            dest='ratelimit', metavar='LIMIT', help='download rate limit (e.g. 50k or 44.6m)')
    general.add_option('-R', '--retries',
            dest='retries', metavar='RETRIES', help='number of retries (default is 10)', default=10)
+   general.add_option('--percentstop',
+           dest='percentstop', metavar='NUMBER', help='stop at a set percent (default is 100)', default=100)
    general.add_option('--playlist-start',
            dest='playliststart', metavar='NUMBER', help='playlist video to start at (default is 1)', default=1)
    general.add_option('--playlist-end',
***************
*** 3602,3607 ****
--- 3614,3620 ----
        'retries': opts.retries,
        'continuedl': opts.continue_dl,
        'noprogress': opts.noprogress,
+       'percentstop': opts.percentstop,
        'playliststart': opts.playliststart,
        'playlistend': opts.playlistend,
        'logtostderr': opts.outtmpl == '-',