In file included from ./libavutil/common.h:48:0, from ./libavutil/avutil.h:301, from ./libavutil/opt.h:31, from libavdevice/sdl2.c:31: ./config.h:339:0: warning: 'HAVE_PTHREAD_SETNAME_NP' redefined #define HAVE_PTHREAD_SETNAME_NP 0 In file included from /usr/include/SDL2/SDL_stdinc.h:31:0, from /usr/include/SDL2/SDL_main.h:25, from /usr/include/SDL2/SDL.h:32, from libavdevice/sdl2.c:26: /usr/include/SDL2/SDL_config.h:186:0: note: this is the location of the previous definition #define HAVE_PTHREAD_SETNAME_NP 1 libavformat/dashenc.c: In function 'flush_init_segment': libavformat/dashenc.c:594:49: warning: '%s' directive output may be truncated writing up to 1023 bytes into a region of size between 1 and 1024 [-Wformat-truncation=] snprintf(filename, sizeof(filename), '%s%s', c->dirname, os->initfile); ^~ In file included from /usr/include/stdio.h:862:0, from ./libavutil/common.h:38, from ./libavutil/avutil.h:301, from libavformat/dashenc.c:31: /usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 1 and 2047 bytes into a destination of size 1024 return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ __bos (__s), __fmt, __va_arg_pack ()); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ libavformat/dashenc.c: In function 'dash_init': libavformat/dashenc.c:1581:49: warning: '%s' directive output may be truncated writing up to 1023 bytes into a region of size between 1 and 1024 [-Wformat-truncation=] snprintf(filename, sizeof(filename), '%s%s', c->dirname, os->initfile); ^~ In file included from /usr/include/stdio.h:862:0, from ./libavutil/common.h:38, from ./libavutil/avutil.h:301, from libavformat/dashenc.c:31: /usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 1 and 2047 bytes into a destination of size 1024 return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ __bos (__s), __fmt, __va_arg_pack ()); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ libavformat/dashenc.c: In function 'write_hls_media_playlist': libavformat/dashenc.c:488:49: warning: 'media_' directive output may be truncated writing 6 bytes into a region of size between 1 and 1024 [-Wformat-truncation=] snprintf(playlist_name, string_size, '%smedia_%d.m3u8', base_url, id); ^~~~~~ In file included from /usr/include/stdio.h:862:0, from ./libavutil/common.h:38, from ./libavutil/avutil.h:301, from libavformat/dashenc.c:31: /usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 13 and 1046 bytes into a destination of size 1024 return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ __bos (__s), __fmt, __va_arg_pack ()); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ libavformat/dashenc.c: In function 'dash_flush': libavformat/dashenc.c:1957:63: warning: '%s' directive output may be truncated writing up to 1023 bytes into a region of size between 1 and 1024 [-Wformat-truncation=] snprintf(os->full_path, sizeof(os->full_path), '%s%s', c->dirname, os->initfile); ^~ In file included from /usr/include/stdio.h:862:0, from ./libavutil/common.h:38, from ./libavutil/avutil.h:301, from libavformat/dashenc.c:31: /usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 1 and 2047 bytes into a destination of size 1024 return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ __bos (__s), __fmt, __va_arg_pack ()); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ libavformat/dashenc.c: In function 'dash_write_trailer': libavformat/dashenc.c:488:49: warning: 'media_' directive output may be truncated writing 6 bytes into a region of size between 1 and 1024 [-Wformat-truncation=] snprintf(playlist_name, string_size, '%smedia_%d.m3u8', base_url, id); ^~~~~~ libavformat/dashenc.c:488:46: note: directive argument in the range [0, 2147483647] snprintf(playlist_name, string_size, '%smedia_%d.m3u8', base_url, id); ^~~~~~~~~~~~~~~~~ In file included from /usr/include/stdio.h:862:0, from ./libavutil/common.h:38, from ./libavutil/avutil.h:301, from libavformat/dashenc.c:31: /usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 13 and 1045 bytes into a destination of size 1024 return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ __bos (__s), __fmt, __va_arg_pack ()); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ libavformat/dashenc.c: In function 'dash_write_packet': libavformat/dashenc.c:2254:59: warning: '%s' directive output may be truncated writing up to 1023 bytes into a region of size between 1 and 1024 [-Wformat-truncation=] snprintf(os->full_path, sizeof(os->full_path), '%s%s', c->dirname, ^~ In file included from /usr/include/stdio.h:862:0, from ./libavutil/common.h:38, from ./libavutil/avutil.h:301, from libavformat/dashenc.c:31: /usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 1 and 2047 bytes into a destination of size 1024 return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ __bos (__s), __fmt, __va_arg_pack ()); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ libavformat/farbfeldenc.c: In function 'farbfeld_write_packet': libavformat/farbfeldenc.c:81:21: error: implicit declaration of function 'ff_img_get_frame_filename'; did you mean 'av_get_frame_filename'? [-Werror=implicit-function-declaration] else if ((ret = ff_img_get_frame_filename(ctx, filename, sizeof filename, ^~~~~~~~~~~~~~~~~~~~~~~~~ av_get_frame_filename cc1: some warnings being treated as errors make: *** [libavformat/farbfeldenc.o] Error 1 make: *** Waiting for unfinished jobs....