In file included from ./libavutil/common.h:48, from ./libavutil/avutil.h:301, from ./libavutil/opt.h:31, from libavdevice/sdl2.c:31: ./config.h:339: warning: 'HAVE_PTHREAD_SETNAME_NP' redefined #define HAVE_PTHREAD_SETNAME_NP 0 In file included from /usr/include/SDL2/SDL_stdinc.h:31, 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:188: note: this is the location of the previous definition #define HAVE_PTHREAD_SETNAME_NP 1 libavformat/dashenc.c: In function 'dash_init': libavformat/dashenc.c:1577:65: warning: '-stream' directive output may be truncated writing 7 bytes into a region of size between 1 and 1024 [-Wformat-truncation=] snprintf(os->initfile, sizeof(os->initfile), '%s-stream%d.%s', basename, i, os->format_name); ^~~~~~~ libavformat/dashenc.c:1577:62: note: directive argument in the range [0, 2147483647] snprintf(os->initfile, sizeof(os->initfile), '%s-stream%d.%s', basename, i, os->format_name); ^~~~~~~~~~~~~~~~ libavformat/dashenc.c:1577:17: note: 'snprintf' output 10 or more bytes (assuming 1042) into a destination of size 1024 snprintf(os->initfile, sizeof(os->initfile), '%s-stream%d.%s', basename, i, os->format_name); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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); ^~ libavformat/dashenc.c:1581:9: note: 'snprintf' output between 1 and 2047 bytes into a destination of size 1024 snprintf(filename, sizeof(filename), '%s%s', c->dirname, os->initfile); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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); ^~ libavformat/dashenc.c:594:9: note: 'snprintf' output between 1 and 2047 bytes into a destination of size 1024 snprintf(filename, sizeof(filename), '%s%s', c->dirname, os->initfile); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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); ^~~~~~ libavformat/dashenc.c:488:9: note: 'snprintf' output between 13 and 1046 bytes into a destination of size 1024 snprintf(playlist_name, string_size, '%smedia_%d.m3u8', base_url, id); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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); ^~ libavformat/dashenc.c:1957:13: note: 'snprintf' output between 1 and 2047 bytes into a destination of size 1024 snprintf(os->full_path, sizeof(os->full_path), '%s%s', c->dirname, os->initfile); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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); ^~~~~~~~~~~~~~~~~ libavformat/dashenc.c:488:9: note: 'snprintf' output between 13 and 1045 bytes into a destination of size 1024 snprintf(playlist_name, string_size, '%smedia_%d.m3u8', base_url, id); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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, ^~ libavformat/dashenc.c:2254:9: note: 'snprintf' output between 1 and 2047 bytes into a destination of size 1024 snprintf(os->full_path, sizeof(os->full_path), '%s%s', c->dirname, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ os->filename); ~~~~~~~~~~~~~ libavformat/img2enc.c: In function 'write_packet': libavformat/img2enc.c:183:55: warning: '.tmp' directive output may be truncated writing 4 bytes into a region of size between 1 and 1024 [-Wformat-truncation=] snprintf(img->tmp[i], sizeof(img->tmp[i]), '%s.tmp', filename); ^~~~ libavformat/img2enc.c:183:9: note: 'snprintf' output between 5 and 1028 bytes into a destination of size 1024 snprintf(img->tmp[i], sizeof(img->tmp[i]), '%s.tmp', filename); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ libavformat/mlvdec.c: In function 'read_header': libavformat/mlvdec.c:364:63: warning: 'snprintf' output may be truncated before the last format character [-Wformat-truncation=] snprintf(filename + strlen(filename) - 2, 3, '%02d', i); ^ libavformat/mlvdec.c:364:13: note: 'snprintf' output between 3 and 4 bytes into a destination of size 3 snprintf(filename + strlen(filename) - 2, 3, '%02d', i); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ libavformat/mxf.c:64:101: error: 'AV_CODEC_ID_DNXUC' undeclared here (not in a function); did you mean 'AV_CODEC_ID_DNXHD'? { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0D,0x04,0x01,0x02,0x02,0x03,0x07,0x01,0x00 }, 15, AV_CODEC_ID_DNXUC }, /* DNxUncompressed/SMPTE RDD 50 */ ^~~~~~~~~~~~~~~~~ AV_CODEC_ID_DNXHD make: *** [ffbuild/common.mak:81: libavformat/mxf.o] Error 1 make: *** Waiting for unfinished jobs.... libavformat/matroskaenc.c: In function 'mkv_write_trailer': libavformat/matroskaenc.c:3341:79: warning: '%012.9f' directive output may be truncated writing between 12 and 320 bytes into a region of size between 8 and 14 [-Wformat-truncation=] snprintf(duration_string, sizeof(duration_string), '%02d:%02d:%012.9f', ^~~~~~~ libavformat/matroskaenc.c:3341:17: note: 'snprintf' output between 19 and 333 bytes into a destination of size 20 snprintf(duration_string, sizeof(duration_string), '%02d:%02d:%012.9f', ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (int) duration_sec / 3600, ((int) duration_sec / 60) % 60, ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fmod(duration_sec, 60)); ~~~~~~~~~~~~~~~~~~~~~~~