[FFmpeg-trac] #5042(avcodec:new): Bad_access while decoding camera stream video frame using FFMpeg iOS

FFmpeg trac at avcodec.org
Fri Nov 27 07:45:20 CET 2015


#5042: Bad_access while decoding camera stream video frame using FFMpeg iOS
----------------------------------+--------------------------------------
             Reporter:  irfangul  |                     Type:  defect
               Status:  new       |                 Priority:  critical
            Component:  avcodec   |                  Version:  git-master
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  1
Analyzed by developer:  1         |
----------------------------------+--------------------------------------
 Summary of the bug:

 I have an app, In which I am decoding video frames coming from ip camera,
 but the method avcodec_decode_video2(m_pCodecCtx, m_pFrame,
 &consumed_bytes, &avpkt); present in avcodec.h/ avcodec.a generating
 bad_access.

 I am using static libraries generated using the script
 https://github.com/kewlbear/FFmpeg-iOS-build-script
 Libraries can be found here: https://downloads.sourceforge.net/project
 /ffmpeg-ios/ffmpeg-ios-master.tar.bz2, I can't figure out what is wrong.

 How to reproduce:
 open stream from camera , This issue was reported by someone else earlier
 Ticket# 3374 but marked close due to lack of information.

 logs and back trace can be found here:
 http://stackoverflow.com/questions/33941165/error-while-decoding-camera-
 stream-video-frame-using-ffmpeg-ios. You can see in snapshot Thread# 27
 backtrace the last clue is point to ff_h264_decode_nal .


 I am using latest static libraries build on FFmpeg 2.8.2  .

 built on Xcode 6.4+ with arm64 support for iOS static library using the
 script https://github.com/kewlbear/FFmpeg-iOS-build-script...

 Let me know If you want something else.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5042>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker


More information about the FFmpeg-trac mailing list