feat: enable hw for decoding

README.md

@@ -38,6 +38,7 @@ Hover on the timeline for nice thumbnails.
 `spawn_first`: Spawn thumbnailer on file load for faster initial thumbnails. Defaults to no.  
 `network`: Enable on remote files. Defaults to no.  
 `audio`: Enable on audio files. Defaults to no.
+`hwdec`: Enable hardware decoding. Defaults to no.
 `use_lua_io`: Windows only: write directly to pipe (requires LuaJIT). Should improve performance, ymmv.
 
 ## For UI developers: How to add thumbfast support to your script

thumbfast.conf

@@ -28,5 +28,8 @@ network=no
 # Enable on audio playback
 audio=no
 
+# Enable hardware decoding
+hwdec=no
+
 # Windows only: don't use subprocess to communicate with socket (warning: blocks, might cause hangs)
 use_lua_io=no

thumbfast.lua

@@ -36,6 +36,9 @@ local options = {
     -- Enable on audio playback
     audio = false,
 
+    -- Enable hardware decoding
+    hwdec = false,
+
     -- Windows only: don't use subprocess to communicate with socket
     use_lua_io = false
 }
@@ -284,12 +287,14 @@ local function spawn(time)
 
     remove_thumbnail_files()
 
+    local mpv_hwdec = "no"
+    if options.hwdec then mpv_hwdec = "auto" end
     local args = {
         "mpv", path, "--no-config", "--msg-level=all=no", "--idle", "--pause", "--keep-open=always", "--really-quiet", "--no-terminal",
         "--edition="..(mp.get_property_number("edition") or "auto"), "--vid="..(mp.get_property_number("vid") or "auto"), "--no-sub", "--no-audio",
         "--start="..time, "--hr-seek=no",
         "--ytdl-format=worst", "--demuxer-readahead-secs=0", "--demuxer-max-bytes=128KiB",
-        "--vd-lavc-skiploopfilter=all", "--vd-lavc-software-fallback=1", "--vd-lavc-fast", "--vd-lavc-threads=2",
+        "--vd-lavc-skiploopfilter=all", "--vd-lavc-software-fallback=1", "--vd-lavc-fast", "--vd-lavc-threads=2", "--hwdec="..mpv_hwdec,
         "--vf="..vf_string(filters_all, true),
         "--sws-allow-zimg=no", "--sws-fast=yes", "--sws-scaler=fast-bilinear",
         "--video-rotate="..last_rotate,