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<DIV>Hello <SPAN id=_FoxToName>x264-devel</SPAN>,</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>I would like to report a problem with recent releases of
x264..</DIV>
<DIV> </DIV>
<DIV>The newest revisions of x264 are dropping frames during
encoding.</DIV>
<DIV> </DIV>
<DIV>Sometime after the release of version 1583, newer
releases of x264 have started dropping video frames while
encoding movie files. By careful experimentation, I've
determined that the source of the dropped frames is x264
rather than some other source. The drop rate is about 4 to 9
frames for a movie file of 150,000 - 200,000 frames. This
results is a loss of audio to video synchronization toward the
end of the movie.</DIV>
<DIV> </DIV>
<DIV>I've been using x264 for over a year and have used it to
encode over 200 movies without any dropped frames issue up to
and including v1583. My experiments with v1583 for 5 different
movies showed 0 dropped frames for all 5.</DIV>
<DIV> </DIV>
<DIV>I can't give you a version number for when the problem
started and I have purged by system of all copies of x264 of
versions later than v1583 to prevent using them accidentally.
But a x264 download around July 18 had the problem.</DIV>
<DIV> </DIV>
<DIV>My computer system is top line, (4 core, 3.4 gig., 8 gig.
ram) with nothing else running during encodes. </DIV>
<DIV> </DIV>
<DIV> -----------------------------------<BR>The x264
script lines I use are: </DIV>
<DIV> </DIV>
<DIV>x264 --pass 1 --bitrate 500 -o MOVIE1.mp4
MOVIE-A1.avs<BR>x264 --pass 2 --bitrate 500 -o MOVIEX.mp4
MOVIE-A2.avs<BR>-----------------------------------<BR>Example
avisynth script lines I use are:</DIV>
<DIV> </DIV>
<DIV>LoadPlugin("MPEG2DEC3.dll")<BR>LoadPlugin("MPEGDecoder.dll")<BR>LoadPlugin("TIVTC.dll")</DIV>
<DIV> </DIV>
<DIV>MPEGSource("MOVIE.m2v")<BR>mpeg2source("MOVIE.d2v")</DIV>
<DIV> </DIV>
<DIV><BR>trim(0, 145,264)</DIV>
<DIV> </DIV>
<DIV>tfm()</DIV>
<DIV> </DIV>
<DIV>tdecimate()</DIV>
<DIV> </DIV>
<DIV>ColorYUV(cont_y=35, gamma_y=70)</DIV>
<DIV> </DIV>
<DIV>BilinearResize(704, 368, 8, 56, -8,
-60)<BR>-----------------------------------</DIV>
<DIV> </DIV>
<DIV>Until now, x264 has been getting better and better with
each new release. I hope this issue can be addressed so I can
contine taking advantage of all improvements without having to
continue using only v1583 for the future.</DIV>
<DIV></DIV>
<DIV> </DIV>
<DIV>Best regards, </DIV>
<DIV> </DIV></DIV></DIV>
<DIV>
<DIV>
<DIV>Ralph Brettschneider<BR><A
href="mailto:ralph@brettschneider.us">ralph@brettschneider.us</A></DIV>
<DIV>2010-07-23</DIV></DIV></DIV></DIV></FONT>
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