matlab - OpenCV 错误 : [mpeg4 @ 0x7ffe33cb3e60] too many thread_release_buffer calls

Question

我根据官方指南在Ubuntu中安装了OpenCV，然后我试图解码一个文件，然后出现错误:

[mpeg4 @ 0x7ffe33cb3e60] too many thread_release_buffer calls!
[mpeg4 @ 0x7ffe33cb3e60] too many thread_release_buffer calls!
[mpeg4 @ 0x7ffe33cb3e60] too many thread_release_buffer calls!
[mpeg4 @ 0x7ffe33cb3e60] too many thread_release_buffer calls!
[mpeg4 @ 0x7ffe33cb3e60] too many thread_release_buffer calls!
[mpeg4 @ 0x7ffe33cb3e60] too many thread_release_buffer calls!
[mpeg4 @ 0x7ffe33cb3e60] too many thread_release_buffer calls!
[mpeg4 @ 0x7ffe33cb3e60] too many thread_release_buffer calls!
[mpeg4 @ 0x7ffe33cb3e60] too many thread_release_buffer calls!
[mpeg4 @ 0x7ffe33cb3e60] too many thread_release_buffer calls!
[mpeg4 @ 0x7ffe33cb3e60] too many thread_release_buffer calls!
[mpeg4 @ 0x7ffe33cb3e60] too many thread_release_buffer calls!
[mpeg4 @ 0x7ffe33cb3e60] too many thread_release_buffer calls!
[mpeg4 @ 0x7ffe33cb3e60] too many thread_release_buffer calls!
[mpeg4 @ 0x7ffe33cb3e60] too many thread_release_buffer calls!
[mpeg4 @ 0x7ffe33cb3e60] too many thread_release_buffer calls!
[mpeg4 @ 0x7ffe33cb3e60] too many thread_release_buffer calls!
[mpeg4 @ 0x7ffe33cb3e60] too many thread_release_buffer calls!

视频大约150帧，错误日志可能超过1000，有人可以帮我吗？谢谢。

Answer 1

升级 FFmpeg 库。旧版本有一个缓冲区限制，似乎在当前 git 版本中被删除。

它曾经是:

#define MAX_BUFFERS (32+1)

...

if (p->num_released_buffers >= MAX_BUFFERS) {
         av_log(p->avctx, AV_LOG_ERROR, "too many thread_release_buffer calls!\n");
         return;
}

见旧 libavcodec/pthread.c与 new version 相比同一个文件。