<div><font>I built x264 ( 10-bit, x86_64 ) with MSYS+GCC 4.6.2, and used it to encode some clips and find some broken frames. Re-encoding with same parameters re-produced the same result, not random broken frames.</font><br>
</div><div><font><br></font></div><div><font>My build parameters: <br></font></div><div><font>PKG_CONFIG_PATH="/mingw/x86_64-w64-mingw32/lib/pkgconfig/" \<br> ./configure --prefix=/mingw/x86_64-w64-mingw32 --host=x86_64-w64-mingw32 --cross-prefix=x86_64-w64-mingw32- --enable-win32thread \<br>
--extra-cflags="-Ofast -fno-strict-aliasing -fexcess-precision=fast" --enable-strip --enable-static \<br> --disable-swscale --disable-lavf --disable-ffms --disable-gpac --bit-depth=10</font></div><div><font><br>
And my encoding settings:<br></font></div><div><font>--crf 18.0000 --profile high10 --level 5.1 --deblock 0:0 --ref 6 --bframes 8 --b-adapt 2 --b-pyramid normal --weightp 2 --keyint infinite --min-keyint 1 --scenecut 40 --qcomp 0.6 --rc-lookahead 48 --ipratio 1.40 --qpmin 0 --qpmax 81 --qpstep 4 --stats "E:\MediaCoder\M03-SP-M11-rev\M03-SP-M11-rev.stats" --aq-mode 1 --aq-strength 1.0 --subme 11 --merange 32 --me tesa --partitions i8x8,p8x8,b8x8,i4x4,p4x4 --direct auto --trellis 0 --psy-rd 0.40:0.00 --no-dct-decimate --no-fast-pskip --sar 8:9 --videoformat ntsc --colorprim smpte170m --transfer smpte170m --colormatrix smpte170m --range tv --input-range tv --pass 1 --slow-firstpass --output "E:\MediaCoder\M03-SP-M11-rev\M03-SP-M11-rev_1pass.mkv"<br>
</font></div><div><font><br></font></div><div><font>I re-encoded the same source with rev2140 I built several days ago from devel git on GitHub, those frames were not broken any more. So it might be a bug of CABAC trellis. Then I tried to encoded it with rev2145 but used --trellis 0 to turn trellis off ( subme reduced to 9 ), the result was also fine. </font><font>Also, encoding the same source with rev2145 8-bit build gave fine result, but I'm not sure 8-bit builds are safe for other sources or not. I didn't test with 32-bit binary.<br>
</font></div><div><font><br></font></div><div><font>Broken result sample: <a href="http://www.megaupload.com/?d=54TBB3OR">http://www.megaupload.com/?d=54TBB3OR</a><br></font></div><div><font>The broken frames start from 00:00:22.<br>
</font></div><div><font><br></font></div><div><font>If you need some source clips to re-produce the issue, I would like to upload an ffv1 file.<br></font></div>