[x264-devel] one bug report : x264 will crash for current version

Sun Jul 17 08:49:42 CEST 2016

Hi,

ffmpeg 3.1.1 is the latest release version, which is used with the latest version of x264 to do transcoding, but crash. I also tried other versions of x264 to do the same transcoding. x264 older versions have no problem, but it seem the versions after 'x264-snapshot-20160412-2245-stable' have the crash issue.

The test clip can be downloaded via the url link:
http://pan.baidu.com/s/1nvzsTdR

The following is test command line:

ffmpeg -i ./Adidas_run_ad.mp4 -movflags +faststart -strict -3 -pass 1 -passlogfile ./TmpInfo_ -s 640x480 -c:v libx264 -b:v 1000000 -maxrate 2000000 -bufsize 2000000 -r 20 -g 200 -preset slow -coder 1 -profile:v high -level 3.1 -x264opts "b-pyramid=normal:weightp=2:8x8dct=1:partitions=i8x8,i4x4,p8x8,p4x4,b8x8:aq-mode=3" -pix_fmt yuv420p -refs 2 -f mp4 -an ./Adidas_run_ad_out_pass1.mp4

ffmpeg -i ./Adidas_run_ad.mp4 -movflags +faststart -strict -3 -pass 2 -passlogfile ./TmpInfo_ -s 640x480 -c:v libx264 -b:v 1000000 -maxrate 2000000 -bufsize 2000000 -r 20 -g 200 -preset slow -coder 1 -profile:v high -level 3.1 -x264opts "b-pyramid=normal:weightp=2:8x8dct=1:partitions=i8x8,i4x4,p8x8,p4x4,b8x8:aq-mode=3" -pix_fmt yuv420p -refs 3 -f mp4 -an ./Adidas_run_ad_out_pass2.mp4

The screen message is shown as below for your reference:

 [xxxx]# ffmpeg -i ./Adidas_run_ad.mp4 -movflags +faststart -strict -3 -pass 1 -passlogfile ./TmpInfo_ -s 640x480 -c:v libx264 -b:v 1000000 -maxrate 2000000 -bufsize 2000000 -r 20 -g 200 -preset slow -coder 1 -profile:v high -level 3.1 -x264opts "b-pyramid=normal:weightp=2:8x8dct=1:partitions=i8x8,i4x4,p8x8,p4x4,b8x8:aq-mode=3" -pix_fmt yuv420p -refs 2 -f mp4 -an ./Adidas_run_ad_out_pass1.mp4
ffmpeg version 3.1.1 Copyright (c) 2000-2016 the FFmpeg developers
  built with icc (ICC) 14.0.2 20140120
  configuration: --cc=/opt/intel/bin/icc --arch=x86_64 --enable-version3 --enable-asm --enable-yasm --disable-static --enable-shared --enable-gpl --prefix=/usr/local/ --extra-cflags=-I/usr/local/include --extra-ldflags=-L/usr/local/lib --enable-nonfree --enable-avfilter --enable-postproc --enable-pthreads --enable-libx264 --enable-libfdk_aac
  libavutil      55. 28.100 / 55. 28.100
  libavcodec     57. 48.101 / 57. 48.101
  libavformat    57. 41.100 / 57. 41.100
  libavdevice    57.  0.101 / 57.  0.101
  libavfilter     6. 47.100 /  6. 47.100
  libswscale      4.  1.100 /  4.  1.100
  libswresample   2.  1.100 /  2.  1.100
  libpostproc    54.  0.100 / 54.  0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from './Adidas_run_ad.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isomavc1letv
    creation_time   : 2015-02-09 17:21:54
    encoder         : HandBrake rev4024 2015010899
  Duration: 00:00:59.81, start: 0.000000, bitrate: 536 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 960x544, 495 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
    Metadata:
      creation_time   : 2015-02-09 17:21:54
      encoder         : JVT/AVC Coding
    Stream #0:1(und): Audio: aac (HE-AAC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 32 kb/s (default)
    Metadata:
      creation_time   : 2015-02-09 17:21:54
[libx264 @ 0x1df8b80] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x1df8b80] profile High, level 3.1
[libx264 @ 0x1df8b80] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x3:0x133 me=dia subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=15 lookahead_threads=3 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=200 keyint_min=20 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=abr mbtree=1 bitrate=1000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=2000 vbv_bufsize=2000 nal_hrd=none filler=0 ip_ratio=1.40 aq=3:1.00
[mp4 @ 0x1df7940] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
Output #0, mp4, to './Adidas_run_ad_out_pass1.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isomavc1letv
    encoder         : Lavf57.41.100
    Stream #0:0(und): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x480, q=-1--1, 1000 kb/s, 20 fps, 10240 tbn, 20 tbc (default)
    Metadata:
      creation_time   : 2015-02-09 17:21:54
      encoder         : Lavc57.48.101 libx264
    Side data:
      cpb: bitrate max/min/avg: 2000000/0/1000000 buffer size: 2000000 vbv_delay: -1
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Press [q] to stop, [?] for help
Past duration 0.799995 too large
Past duration 0.999992 too large
Segmentation fault (core dumped)

And x264-snapshot-20160411-2245-stable has no crash problem.

Looking forward to someone solving the problem.

Thanks!

Regards

andrew

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