[x264-devel] [BUG] x264 shift exponent error when encoding a 1080p video with --no-cabac

[Sasi Inguva]

Hi,

I found a bug in x264 code, when compiled with -fsantize=shift-exponent.
When I tried to encode the attached test file with --no-cabac, the encoding
fails with this error
common/vlc.c:84:27: runtime error: shift exponent 32 is too large for
32-bit type 'int'

Here is the full command line and logs:
make clean && ./configure --enable-pic --enable-static
--extra-cflags="-fsanitize=shift-exponent"
--extra-ldflags="-fsanitize=shift-exponent" && make -j12 && \
./x264 --no-cabac --input-res 1920x1080 -o ~/temp.mkv ~/test_short.yuv

yuv [info]: 1920x1080p 0:0 @ 25/1 fps (cfr)
common/vlc.c:84:27: runtime error: shift exponent 32 is too large for
32-bit type 'int'
x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
x264 [info]: profile High, level 4.0
x264 [info]: frame I:1 Avg QP:13.37 size: 53514

x264 [info]: frame P:27 Avg QP:20.41 size: 26810
x264 [info]: frame B:2 Avg QP:28.24 size: 22252
x264 [info]: consecutive B-frames: 90.0% 0.0% 10.0% 0.0%
x264 [info]: mb I I16..4: 83.7% 9.5% 6.9%
x264 [info]: mb P I16..4: 2.1% 1.0% 0.1% P16..4: 6.7% 3.3% 1.2%
0.0% 0.0% skip:85.6%
x264 [info]: mb B I16..4: 0.2% 0.1% 0.2% B16..8: 6.8% 2.6% 0.7%
direct: 1.6% skip:87.8% L0:41.9% L1:43.1% BI:15.0%
x264 [info]: 8x8 transform intra:19.7% inter:62.8%
x264 [info]: coded y,uvDC,uvAC intra: 9.3% 16.8% 14.3% inter: 3.8% 7.5% 6.5%
x264 [info]: i16 v,h,dc,p: 93% 6% 2% 0%
x264 [info]: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 11% 61% 3% 1% 1% 2%
2% 1%
x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 35% 28% 16% 6% 2% 2% 4%
3% 3%
x264 [info]: i8c dc,h,v,p: 79% 10% 9% 1%
x264 [info]: Weighted P-Frames: Y:0.0% UV:0.0%
x264 [info]: ref P L0: 65.6% 9.1% 16.7% 8.6%
x264 [info]: ref B L0: 72.0% 28.0%
x264 [info]: kb/s:5479.23

encoded 30 frames, 55.51 fps, 5484.05 kb/s

​​Please let me know if you need more information. Attaching the file as a
drive link, because sending as attachment did not work.

Thanks,
Sasi

​​​
test_short.yuv
<https://drive.google.com/a/google.com/file/d/1WSHZPW0zkmylt3xeJiiMJR8rVytLYbX5/view?usp=drive_web>
​

[Sasi Inguva]

Ping. Can anybody please help look into this. Also I realize that the
previous drive link had sharing issues, so here is the new link
https://drive.google.com/file/d/1OG-7crvA26OkboTbLj8XDiaPwnlGISCy/view?usp=sharing


Thanks

Post by Sasi Inguva
Hi,
I found a bug in x264 code, when compiled with -fsantize=shift-exponent.
When I tried to encode the attached test file with --no-cabac, the encoding
fails with this error
common/vlc.c:84:27: runtime error: shift exponent 32 is too large for
32-bit type 'int'
make clean && ./configure --enable-pic --enable-static
--extra-cflags="-fsanitize=shift-exponent"
--extra-ldflags="-fsanitize=shift-exponent" && make -j12 && \
./x264 --no-cabac --input-res 1920x1080 -o ~/temp.mkv ~/test_short.yuv
common/vlc.c:84:27: runtime error: shift exponent 32 is too large for
32-bit type 'int'
x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
x264 [info]: profile High, level 4.0
x264 [info]: frame I:1 Avg QP:13.37 size: 53514
x264 [info]: frame P:27 Avg QP:20.41 size: 26810
x264 [info]: frame B:2 Avg QP:28.24 size: 22252
x264 [info]: consecutive B-frames: 90.0% 0.0% 10.0% 0.0%
x264 [info]: mb I I16..4: 83.7% 9.5% 6.9%
x264 [info]: mb P I16..4: 2.1% 1.0% 0.1% P16..4: 6.7% 3.3% 1.2%
0.0% 0.0% skip:85.6%
x264 [info]: mb B I16..4: 0.2% 0.1% 0.2% B16..8: 6.8% 2.6% 0.7%
direct: 1.6% skip:87.8% L0:41.9% L1:43.1% BI:15.0%
x264 [info]: 8x8 transform intra:19.7% inter:62.8%
x264 [info]: coded y,uvDC,uvAC intra: 9.3% 16.8% 14.3% inter: 3.8% 7.5% 6.5%
x264 [info]: i16 v,h,dc,p: 93% 6% 2% 0%
x264 [info]: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 11% 61% 3% 1% 1% 2%
2% 1%
x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 35% 28% 16% 6% 2% 2% 4%
3% 3%
x264 [info]: i8c dc,h,v,p: 79% 10% 9% 1%
x264 [info]: Weighted P-Frames: Y:0.0% UV:0.0%
x264 [info]: ref P L0: 65.6% 9.1% 16.7% 8.6%
x264 [info]: ref B L0: 72.0% 28.0%
x264 [info]: kb/s:5479.23
encoded 30 frames, 55.51 fps, 5484.05 kb/s
​​Please let me know if you need more information. Attaching the file as a
drive link, because sending as attachment did not work.
Thanks,
Sasi
​​​
test_short.yuv
<https://drive.google.com/a/google.com/file/d/1WSHZPW0zkmylt3xeJiiMJR8rVytLYbX5/view?usp=drive_web>
​

[BugMaster]

Post by Sasi Inguva
Ping. Can anybody please help look into this. Also I realize that
the previous drive link had sharing issues, so here is the new link
https://drive.google.com/file/d/1OG-7crvA26OkboTbLj8XDiaPwnlGISCy/view?usp=sharing
Thanks
Hi, 
I found a bug in x264 code, when compiled with -fsantize=shift-exponent.
When I tried to encode the attached test file with --no-cabac, the
encoding fails with this error
common/vlc.c:84:27: runtime error: shift exponent 32 is too large for 32-bit type 'int'
make clean && ./configure  --enable-pic --enable-static --extra-cflags="-fsanitize=shift-exponent" --extra-ldflags="-fsanitize=shift-exponent" && make -j12 && \
./x264 --no-cabac --input-res 1920x1080  -o ~/temp.mkv  ~/test_short.yuv
common/vlc.c:84:27: runtime error: shift exponent 32 is too large for 32-bit type 'int'
x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
x264 [info]: profile High, level 4.0
x264 [info]: frame I:1     Avg QP:13.37  size: 53514               
x264 [info]: frame P:27    Avg QP:20.41  size: 26810
x264 [info]: frame B:2     Avg QP:28.24  size: 22252
x264 [info]: consecutive B-frames: 90.0%  0.0% 10.0%  0.0%
x264 [info]: mb I  I16..4: 83.7%  9.5%  6.9%
x264 [info]: mb P  I16..4:  2.1%  1.0%  0.1%  P16..4:  6.7%  3.3%  1.2%  0.0%  0.0%    skip:85.6%
x264 [info]: mb B  I16..4:  0.2%  0.1%  0.2%  B16..8:  6.8%  2.6% 
0.7%  direct: 1.6%  skip:87.8%  L0:41.9% L1:43.1% BI:15.0%
x264 [info]: 8x8 transform intra:19.7% inter:62.8%
x264 [info]: coded y,uvDC,uvAC intra: 9.3% 16.8% 14.3% inter: 3.8% 7.5% 6.5%
x264 [info]: i16 v,h,dc,p: 93%  6%  2%  0%
x264 [info]: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 11% 61%  3%  1%  1% 2%  2%  1%
x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 35% 28% 16%  6%  2%  2% 4%  3%  3%
x264 [info]: i8c dc,h,v,p: 79% 10%  9%  1%
x264 [info]: Weighted P-Frames: Y:0.0% UV:0.0%
x264 [info]: ref P L0: 65.6%  9.1% 16.7%  8.6%
x264 [info]: ref B L0: 72.0% 28.0%
x264 [info]: kb/s:5479.23
encoded 30 frames, 55.51 fps, 5484.05 kb/s
​​Please let me know if you need more information. Attaching the
file as a drive link, because sending as attachment did not work.
Thanks,
Sasi

Hi.

Can you try with attached patch that should fix it.

[Sasi Inguva]

This works. thanks.

Post by Sasi Inguva

Post by Sasi Inguva
Ping. Can anybody please help look into this. Also I realize that
the previous drive link had sharing issues, so here is the new link

https://drive.google.com/file/d/1OG-7crvA26OkboTbLj8XDiaPwnlGISCy/view?usp=sharing

Post by Sasi Inguva
Thanks
Hi,
I found a bug in x264 code, when compiled with -fsantize=shift-exponent.
When I tried to encode the attached test file with --no-cabac, the
encoding fails with this error
common/vlc.c:84:27: runtime error: shift exponent 32 is too large for

32-bit type 'int'

Post by Sasi Inguva
make clean && ./configure --enable-pic --enable-static

--extra-cflags="-fsanitize=shift-exponent"
--extra-ldflags="-fsanitize=shift-exponent" && make -j12 && \

Post by Sasi Inguva
./x264 --no-cabac --input-res 1920x1080 -o ~/temp.mkv ~/test_short.yuv
common/vlc.c:84:27: runtime error: shift exponent 32 is too large for

32-bit type 'int'

Post by Sasi Inguva
x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
x264 [info]: profile High, level 4.0
x264 [info]: frame I:1 Avg QP:13.37 size: 53514
x264 [info]: frame P:27 Avg QP:20.41 size: 26810
x264 [info]: frame B:2 Avg QP:28.24 size: 22252
x264 [info]: consecutive B-frames: 90.0% 0.0% 10.0% 0.0%
x264 [info]: mb I I16..4: 83.7% 9.5% 6.9%
x264 [info]: mb P I16..4: 2.1% 1.0% 0.1% P16..4: 6.7% 3.3% 1.2%

0.0% 0.0% skip:85.6%

Post by Sasi Inguva
x264 [info]: mb B I16..4: 0.2% 0.1% 0.2% B16..8: 6.8% 2.6%
0.7% direct: 1.6% skip:87.8% L0:41.9% L1:43.1% BI:15.0%
x264 [info]: 8x8 transform intra:19.7% inter:62.8%
x264 [info]: coded y,uvDC,uvAC intra: 9.3% 16.8% 14.3% inter: 3.8% 7.5%

6.5%

Post by Sasi Inguva
x264 [info]: i16 v,h,dc,p: 93% 6% 2% 0%
x264 [info]: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 11% 61% 3% 1% 1% 2%

2% 1%

Post by Sasi Inguva
x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 35% 28% 16% 6% 2% 2% 4%

3% 3%

Post by Sasi Inguva
x264 [info]: i8c dc,h,v,p: 79% 10% 9% 1%
x264 [info]: Weighted P-Frames: Y:0.0% UV:0.0%
x264 [info]: ref P L0: 65.6% 9.1% 16.7% 8.6%
x264 [info]: ref B L0: 72.0% 28.0%
x264 [info]: kb/s:5479.23
encoded 30 frames, 55.51 fps, 5484.05 kb/s
​​Please let me know if you need more information. Attaching the
file as a drive link, because sending as attachment did not work.
Thanks,
Sasi

Hi.
Can you try with attached patch that should fix
it._______________________________________________
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