使用FFMpeg iOS解码相机流视频帧时出错
我有一个应用程序，其中我解码来自IP摄像头的视频帧，但方法avcodec_decode_video2(m_pCodecCtx, m_pFrame, &consumed_bytes, &avpkt); 目前在avcodec.h生成bad_access，我无法弄清楚什么是错的。
这个应用程序与旧库FFMpeg工作正常，但通过苹果政策，为了发布它支持arm64的应用程序，所以我更新了我的库以支持arm64，之后发生了此问题。
这是截图
虽然bad_access应用程序正在生成以下日志：
[h264 @ 0x1071400] sps_id 12 out of range
[h264 @ 0x1071400] pps_id 417 out of range
[h264 @ 0x1071400] sps_id 3 out of range
[h264 @ 0x1071400] sps_id 32 out of range
[h264 @ 0x1071400] sps_id 6 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 32 out of range
[h264 @ 0x1071400] sps_id 1 out of range
[h264 @ 0x1071400] sps_id 3 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 32 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 1 out of range
[h264 @ 0x1071400] sps_id 1 out of range
[h264 @ 0x1071400] sps_id 1 out of range
[h264 @ 0x1071400] sps_id 1 out of range
[h264 @ 0x1071400] sps_id 1 out of range
[h264 @ 0x1071400] sps_id 1 out of range
[h264 @ 0x1071400] sps_id 1 out of range
[h264 @ 0x1071400] sps_id 2 out of range
[h264 @ 0x1071400] sps_id 2 out of range
[h264 @ 0x1071400] sps_id 2 out of range
[h264 @ 0x1071400] sps_id 2 out of range
[h264 @ 0x1071400] sps_id 2 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 32 out of range
[h264 @ 0x1071400] sps_id 3 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 1 out of range
[h264 @ 0x1071400] sps_id 1 out of range
[h264 @ 0x1071400] sps_id 1 out of range
[h264 @ 0x1071400] sps_id 1 out of range
[h264 @ 0x1071400] sps_id 1 out of range
[h264 @ 0x1071400] sps_id 1 out of range
[h264 @ 0x1071400] sps_id 1 out of range
[h264 @ 0x1071400] sps_id 2 out of range
[h264 @ 0x1071400] sps_id 2 out of range
[h264 @ 0x1071400] sps_id 2 out of range
[h264 @ 0x1071400] sps_id 2 out of range
[h264 @ 0x1071400] sps_id 2 out of range
[h264 @ 0x1071400] pps_id 418 out of range
[h264 @ 0x1071400] Partitioned H.264 support is incomplete
[h264 @ 0x1071400] sps_id 6 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 1 out of range
[h264 @ 0x1071400] non-existing PPS 3 referenced
[h264 @ 0x1071400] decode_slice_header error
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] slice type 10 too large at 0 0
[h264 @ 0x1071400] decode_slice_header error
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] non-existing PPS 2 referenced
[h264 @ 0x1071400] decode_slice_header error
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] slice type 29 too large at 0 0
[h264 @ 0x1071400] decode_slice_header error
[h264 @ 0x1071400] sps_id 2 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] sps_id 0 out of range
[h264 @ 0x1071400] slice type 32 too large at 0 0
[h264 @ 0x1071400] decode_slice_header error
[h264 @ 0x1071400] slice type 32 too large at 0 0
[h264 @ 0x1071400] decode_slice_header error
[h264 @ 0x1071400] slice type 32 too large at 0 0
[h264 @ 0x1071400] decode_slice_header error
[h264 @ 0x1071400] slice type 32 too large at 0 0
完整的错误日志： https ： //drive.google.com/file/d/0B-Nh7ci6wLX0OVlxaXV4aGpJems/view？usp =分享
崩溃日志： http : //crashes.to/s/6765d63b540
注意：如果您需要其他东西，请发表评论。
我解决了我的问题，问题是使用折旧方法avcodec_alloc_frame() 。
我在构造函数中使用下面的代码
m_pCodecCtx = avcodec_alloc_context3(m_pCodec);
if(m_pCodecCtx == NULL)
{
NSLog(@"if(pCodecCtx == NULL)n");
return ;
}
[g_Lock lock];
//¥Úø™codec°£»Áπ˚¥Úø™≥…𶵃ª∞£¨∑÷≈‰AVFrame£
if(avcodec_open2(m_pCodecCtx, m_pCodec, NULL) >= 0)
{
m_pFrame = avcodec_alloc_frame(); /* Allocate video frame */
}
[g_Lock unlock];
然后我最终更新了我的头文件，之后我得到了有关方法avcodec_alloc_frame()折旧的警告，于是我将它更新为av_frame_alloc() ，它的工作完美无瑕！
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