-flags2 local_header does not work when -vcodec copy

[liu xiang]

Summary of the bug:

i want to send my h264 encoded file to another rtp system, the rtp system need sps and pps before every keyframe, when -vcodec copy i can only get the one sps and pps in the beginning.

How to reproduce:

% ffmpeg -re -fflags nobuffer -i ./guigu_1.mp4 -vcodec copy -flags2 local_header -an -f rtp -payload_type 96 rtp://127.0.0.1:63158
ffmpeg 3.4.2 

Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker.

[Hendrik]

codec=copy is designed to do what its name suggests - it copies the contents of the stream from the source to the destination without modification.

[Carl Eugen Hoyos]

The option -flags2 cannot work with -vcodec copy.

[liu xiang]

The option -flags2 cannot work with -vcodec copy, so i have to decode and encode the stream, that will waste a lots of cpu.

any other way to do what i want whout decode and encode?