FFprobe's input_file_name is re-initialized on every ffprobe run. Emscripten's ENVIRONMENT variable was set to "WORKER". Node.js-related code should no longer be present in ffmpeg-core.js.

Author: izogfif

build/ffmpeg-wasm.sh

@@ -30,6 +30,7 @@ CONF_FLAGS=(
   -lswscale 
   -Wno-deprecated-declarations 
   $LDFLAGS 
+  -sENVIRONMENT=worker
   -sWASM_BIGINT                            # enable big int support
   -sUSE_SDL=2                              # use emscripten SDL2 lib port
   -sMODULARIZE                             # modularized to use as a library

src/fftools/ffprobe.c

@@ -4047,6 +4047,7 @@ int ffprobe(int argc, char **argv)
 #endif
 
     show_banner(argc, argv, options);
+    input_filename = NULL;
     parse_options(NULL, argc, argv, options, opt_input_file);
 
     if (do_show_log)