[FFmpeg-trac] #1063(undetermined:open): invalid reads with very high resolution video
FFmpeg
trac at avcodec.org
Sat May 12 16:29:25 CEST 2012
#1063: invalid reads with very high resolution video
-------------------------------------+-------------------------------------
Reporter: ami_stuff | Owner:
Type: defect | Status: open
Priority: normal | Component:
Version: git-master | undetermined
Keywords: | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 1
-------------------------------------+-------------------------------------
Comment (by ami_stuff):
ffmpeg doesn't crash here anymore, but ffplay still does.
maybe the problem is related to these mpeg errors?:
{{{
C:\>ffmpeg -i 599.png -s 4000x4000 -vcodec mpeg1video out.mpg
ffmpeg version N-40584-g0159032 Copyright (c) 2000-2012 the FFmpeg
developers
built on May 11 2012 02:38:34 with gcc 4.5.0 20100414 (Fedora MinGW
4.5.0-1.fc
14)
configuration: --prefix=/var/www/users/research/ffmpeg/snapshots/build
--arch=
x86 --target-os=mingw32 --cross-prefix=i686-pc-mingw32- --cc='ccache i686
-pc-min
gw32-gcc' --enable-w32threads --enable-memalign-hack --enable-runtime-
cpudetect
--enable-cross-compile --enable-static --disable-shared --extra-
libs='-lws2_32 -
lwinmm' --extra-cflags='--static
-I/var/www/users/research/ffmpeg/snapshots/buil
d/include' --extra-ldflags='-static
-L/var/www/users/research/ffmpeg/snapshots/b
uild/lib' --enable-bzlib --enable-zlib --enable-gpl --enable-version3
--enable-n
onfree --enable-libx264 --enable-libspeex --enable-libtheora --enable-
libvorbis
--enable-libfaac --enable-libxvid --enable-libopencore-amrnb --enable-
libopencor
e-amrwb --enable-libmp3lame --enable-libvpx --disable-decoder=libvpx
libavutil 51. 50.100 / 51. 50.100
libavcodec 54. 21.101 / 54. 21.101
libavformat 54. 4.100 / 54. 4.100
libavdevice 53. 4.100 / 53. 4.100
libavfilter 2. 72.105 / 2. 72.105
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 11.100 / 0. 11.100
libpostproc 52. 0.100 / 52. 0.100
Input #0, image2, from '599.png':
Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
Stream #0:0: Video: png, rgb24, 599x412, 25 tbr, 25 tbn, 25 tbc
w:599 h:412 pixfmt:rgb24 tb:1/1000000 sar:0/1 sws_param:flags=2
[buffersink @ 0x1dd23c0] No opaque field provided
[scale @ 0x1dd2580] w:599 h:412 fmt:rgb24 sar:0/1 -> w:4000 h:4000
fmt:yuv420p s
ar:0/1 flags:0x4
[mpeg @ 0x1dcb020] VBV buffer size not set, muxing may fail
Output #0, mpeg, to 'out.mpg':
Metadata:
encoder : Lavf54.4.100
Stream #0:0: Video: mpeg1video, yuv420p, 4000x4000, q=2-31, 200 kb/s,
90k tb
n, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (png -> mpeg1video)
Press [q] to stop, [?] for help
frame= 1 fps=0.1 q=3.7 Lsize= 230kB time=00:00:00.04
bitrate=47104.0kbits
/s
video:229kB audio:0kB global headers:0kB muxing overhead 0.472672%
}}}
{{{
C:\>ffmpeg -i out.mpg out.avi
ffmpeg version N-40584-g0159032 Copyright (c) 2000-2012 the FFmpeg
developers
built on May 11 2012 02:38:34 with gcc 4.5.0 20100414 (Fedora MinGW
4.5.0-1.fc
14)
configuration: --prefix=/var/www/users/research/ffmpeg/snapshots/build
--arch=
x86 --target-os=mingw32 --cross-prefix=i686-pc-mingw32- --cc='ccache i686
-pc-min
gw32-gcc' --enable-w32threads --enable-memalign-hack --enable-runtime-
cpudetect
--enable-cross-compile --enable-static --disable-shared --extra-
libs='-lws2_32 -
lwinmm' --extra-cflags='--static
-I/var/www/users/research/ffmpeg/snapshots/buil
d/include' --extra-ldflags='-static
-L/var/www/users/research/ffmpeg/snapshots/b
uild/lib' --enable-bzlib --enable-zlib --enable-gpl --enable-version3
--enable-n
onfree --enable-libx264 --enable-libspeex --enable-libtheora --enable-
libvorbis
--enable-libfaac --enable-libxvid --enable-libopencore-amrnb --enable-
libopencor
e-amrwb --enable-libmp3lame --enable-libvpx --disable-decoder=libvpx
libavutil 51. 50.100 / 51. 50.100
libavcodec 54. 21.101 / 54. 21.101
libavformat 54. 4.100 / 54. 4.100
libavdevice 53. 4.100 / 53. 4.100
libavfilter 2. 72.105 / 2. 72.105
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 11.100 / 0. 11.100
libpostproc 52. 0.100 / 52. 0.100
[mpeg @ 0x1dcc5a0] Format mpeg detected only with low score of 25,
misdetection
possible!
[mpeg1video @ 0x1dc2320] qscale == 0
[mpeg1video @ 0x1dc2320] Warning MVs not available
[mpeg1video @ 0x1dc2320] concealing 62500 DC, 62500 AC, 62500 MV errors
Input #0, mpeg, from 'out.mpg':
Duration: N/A, start: 1.000000, bitrate: N/A
Stream #0:0[0x1e0]: Video: mpeg1video, yuv420p, 4000x4000 [SAR 1:1 DAR
1:1],
104857 kb/s, 25 tbr, 90k tbn, 25 tbc
w:4000 h:4000 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param:flags=2
[buffersink @ 0x1dd4e40] No opaque field provided
Output #0, avi, to 'out.avi':
Metadata:
ISFT : Lavf54.4.100
Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 4000x4000 [SAR
1:1 D
AR 1:1], q=2-31, 200 kb/s, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (mpeg1video -> mpeg4)
Press [q] to stop, [?] for help
[mpeg1video @ 0x1dc2320] qscale == 0
[mpeg1video @ 0x1dc2320] Warning MVs not available
[mpeg1video @ 0x1dc2320] concealing 62500 DC, 62500 AC, 62500 MV errors
frame= 1 fps=0.1 q=3.7 Lsize= 174kB time=00:00:00.04
bitrate=35543.6kbits
/s
video:168kB audio:0kB global headers:0kB muxing overhead 3.362879%
}}}
{{{
C:\>ffmpeg -i 599.png -s 4000x4000 -vcodec mpeg2video out.mpg
ffmpeg version N-40584-g0159032 Copyright (c) 2000-2012 the FFmpeg
developers
built on May 11 2012 02:38:34 with gcc 4.5.0 20100414 (Fedora MinGW
4.5.0-1.fc
14)
configuration: --prefix=/var/www/users/research/ffmpeg/snapshots/build
--arch=
x86 --target-os=mingw32 --cross-prefix=i686-pc-mingw32- --cc='ccache i686
-pc-min
gw32-gcc' --enable-w32threads --enable-memalign-hack --enable-runtime-
cpudetect
--enable-cross-compile --enable-static --disable-shared --extra-
libs='-lws2_32 -
lwinmm' --extra-cflags='--static
-I/var/www/users/research/ffmpeg/snapshots/buil
d/include' --extra-ldflags='-static
-L/var/www/users/research/ffmpeg/snapshots/b
uild/lib' --enable-bzlib --enable-zlib --enable-gpl --enable-version3
--enable-n
onfree --enable-libx264 --enable-libspeex --enable-libtheora --enable-
libvorbis
--enable-libfaac --enable-libxvid --enable-libopencore-amrnb --enable-
libopencor
e-amrwb --enable-libmp3lame --enable-libvpx --disable-decoder=libvpx
libavutil 51. 50.100 / 51. 50.100
libavcodec 54. 21.101 / 54. 21.101
libavformat 54. 4.100 / 54. 4.100
libavdevice 53. 4.100 / 53. 4.100
libavfilter 2. 72.105 / 2. 72.105
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 11.100 / 0. 11.100
libpostproc 52. 0.100 / 52. 0.100
Input #0, image2, from '599.png':
Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
Stream #0:0: Video: png, rgb24, 599x412, 25 tbr, 25 tbn, 25 tbc
w:599 h:412 pixfmt:rgb24 tb:1/1000000 sar:0/1 sws_param:flags=2
[buffersink @ 0x1dd23c0] No opaque field provided
[scale @ 0x1dd2580] w:599 h:412 fmt:rgb24 sar:0/1 -> w:4000 h:4000
fmt:yuv420p s
ar:0/1 flags:0x4
[mpeg @ 0x1dcb020] VBV buffer size not set, muxing may fail
Output #0, mpeg, to 'out.mpg':
Metadata:
encoder : Lavf54.4.100
Stream #0:0: Video: mpeg2video, yuv420p, 4000x4000, q=2-31, 200 kb/s,
90k tb
n, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (png -> mpeg2video)
Press [q] to stop, [?] for help
[mpeg @ 0x1dcb020] buffer underflow i=0 bufi=234684 size=236797
[mpeg @ 0x1dcb020] packet too large, ignoring buffer limits to mux it
[mpeg @ 0x1dcb020] buffer underflow i=0 bufi=234684 size=236797
[mpeg @ 0x1dcb020] buffer underflow i=0 bufi=236713 size=236797
packet too large, ignoring buffer limits to mux it
[mpeg @ 0x1dcb020] buffer underflow i=0 bufi=236713 size=236797
frame= 1 fps=0.2 q=3.7 Lsize= 234kB time=00:00:00.04
bitrate=47923.2kbits
/s
video:231kB audio:0kB global headers:0kB muxing overhead 1.190471%
}}}
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1063#comment:5>
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