Re: mpeg2enc patches from October 3 2010 cause buffer overrun

Andrew Stevens <[email protected]> Sat, 09 Oct 2010 17:53:38 +0200
Newsgroups gmane.comp.video.mjpeg.devel
Message-ID <[email protected]>
On Sat, 2010-10-09 at 00:28 +0200, Linards Ticmanis wrote:
> Hello,
> 
> this is just to notify you that the patches for mpeg2enc that went into
> CVS on October 3 cause frequent buffer overruns for low-bitrate
> low-buffer-size MPEG-1 streams (such as VCD).

Yes, there was a nasty bug where excessive feedback gain was causing a
'negative' number of bits to allocated which due to a mathematical quite
caused floor quantisation to be selected.

This should be fixed now.  I will be completing basic two-pass support
this W/E.

For the next few weeks mpeg2enc's state should be considered "under
active development".   I.e. please do test it out but use an older rev.
for production work!

cheers,
	Andrew



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