libavformat/dashenc.c: In function 'dash_init': libavformat/dashenc.c:1588:65: 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:1588:62: 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:1588:17: 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:1592:49: 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:1592:9: 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:601:49: 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:601:9: 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:495:49: 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:495:9: 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:1968:63: 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:1968:13: 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:495:49: 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:495:46: note: directive argument in the range [0, 2147483647] snprintf(playlist_name, string_size, '%smedia_%d.m3u8', base_url, id); ^~~~~~~~~~~~~~~~~ libavformat/dashenc.c:495:9: 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:2265:59: 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:2265:9: 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); ~~~~~~~~~~~~~ In function 'new_rendition', inlined from 'parse_playlist' at libavformat/hls.c:827:13: libavformat/hls.c:545:13: warning: 'strncpy' output may be truncated copying between 2 and 62 bytes from a string of length 63 [-Wstringop-truncation] strncpy(rend->language + langlen + 1, info->assoc_language, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ sizeof(rend->language) - langlen - 2); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ libavformat/img2enc.c: In function 'write_packet': libavformat/img2enc.c:181:55: 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:181:9: 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:361:63: warning: 'snprintf' output may be truncated before the last format character [-Wformat-truncation=] snprintf(filename + strlen(filename) - 2, 3, '%02d', i); ^ libavformat/mlvdec.c:361:13: note: 'snprintf' output between 3 and 4 bytes into a destination of size 3 snprintf(filename + strlen(filename) - 2, 3, '%02d', i); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ libavformat/mpegenc.c: In function 'mpeg_mux_init': libavformat/mpegenc.c:432:13: error: a label can only be part of a statement and a declaration is not a statement AVPacketSideData *sd; ^~~~~~~~~~~~~~~~ libavformat/mpegenc.c:433:13: error: expected expression before 'AVCPBProperties' AVCPBProperties *props = NULL; ^~~~~~~~~~~~~~~ libavformat/mpegenc.c:441:17: error: 'props' undeclared (first use in this function) props = (AVCPBProperties*)sd->data; ^~~~~ libavformat/mpegenc.c:441:17: note: each undeclared identifier is reported only once for each function it appears in make: *** [ffbuild/common.mak:81: libavformat/mpegenc.o] Error 1 make: *** Waiting for unfinished jobs.... libavformat/matroskaenc.c: In function 'mkv_write_trailer': libavformat/matroskaenc.c:3183:58: 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, 20, '%02d:%02d:%012.9f', ^~~~~~~ libavformat/matroskaenc.c:3183:17: note: 'snprintf' output between 19 and 333 bytes into a destination of size 20 snprintf(duration_string, 20, '%02d:%02d:%012.9f', ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (int) duration_sec / 3600, ((int) duration_sec / 60) % 60, ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fmod(duration_sec, 60)); ~~~~~~~~~~~~~~~~~~~~~~~