ffmpeg：Codec for stream 0 does not use global headers but container format requires global headers

Posted 2022-01-30 Dontla

ubuntu下，我用.h264转换.mp4格式提示一下信息：
ffmpeg -i 1e1fee9790f26fa3_202214225310.h264 -vcodec copy -f mp4 test.mp4

[root@ubuntu /arnold_test/20220104_ffmpeg_test]6# ffmpeg -i 1e1fee9790f26fa3_202214225310.h264 -vcodec copy -f mp4 test.mp4
ffmpeg version 2.8.17-0ubuntu0.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.12) 20160609
...
Input #0, h264, from '1e1fee9790f26fa3_202214225310.h264':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: h264 (Main), yuv420p, 1920x1080, 25 fps, 25 tbr, 1200k tbn, 50 tbc
[mp4 @ 0x1acb080] Codec for stream 0 does not use global headers but container format requires global headers
Output #0, mp4, to 'test.mp4':
  Metadata:
    encoder         : Lavf56.40.101
    Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1920x1080, q=2-31, 25 fps, 25 tbr, 1200k tbn, 1200k tbc
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
frame=  150 fps=0.0 q=-1.0 Lsize=    1451kB time=00:00:05.96 bitrate=1994.0kbits/s    
video:1449kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.097164%
[root@ubuntu /arnold_test/20220104_ffmpeg_test]7# 

这个也不算个错误，就是个警告，如果想消除可以这样
ffmpeg -i 1e1fee9790f26fa3_202214225310.h264 -vcodec copy -flags +global_header -f mp4 test.mp4

加上-flags +global_header，就不会报提示了

参考文章1：加密的m3u8、ts文件合并

参考文章2：ffmpeg 处理输入 h264 到 h265 时发现无效数据