Allow webassembly to use up to 4GB of memory.

Author: Max Christoph

build/ffmpeg-wasm.sh

@@ -37,7 +37,7 @@ CONF_FLAGS=(
   -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
+  ${FFMPEG_ST:+ -sINITIAL_MEMORY=32MB -sALLOW_MEMORY_GROWTH -sMAXIMUM_MEMORY=4GB} # Use just enough memory as memory usage can grow
   -sEXPORT_NAME="$EXPORT_NAME"             # required in browser env, so that user can access this module from window object
   -sEXPORTED_FUNCTIONS=$(node src/bind/ffmpeg/export.js) # exported functions
   -sEXPORTED_RUNTIME_METHODS=$(node src/bind/ffmpeg/export-runtime.js) # exported built-in functions