Add tests

build/ffmpeg-wasm.sh

@@ -32,6 +32,7 @@ CONF_FLAGS=(
   -sUSE_SDL=2                              # use emscripten SDL2 lib port
   -sMODULARIZE                             # modularized to use as a library
   ${FFMPEG_MT:+ -sINITIAL_MEMORY=1024MB}   # ALLOW_MEMORY_GROWTH is not recommended when using threads, thus we use a large initial memory
+  ${FFMPEG_MT:+ -sPTHREAD_POOL_SIZE=32}    # use 32 threads
   ${FFMPEG_ST:+ -sINITIAL_MEMORY=32MB -sALLOW_MEMORY_GROWTH} # Use just enough memory as memory usage can grow
   -sEXPORT_NAME="$EXPORT_NAME"             # required in browser env, so that user can access this module from window.createFFmpeg
   -sEXPORTED_FUNCTIONS=$(node wasm/bind/ffmpeg/export.js) # exported functions