untested ffmpeg decoder, mostly finished core

flake.lock

@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1740019556,
-        "narHash": "sha256-vn285HxnnlHLWnv59Og7muqECNMS33mWLM14soFIv2g=",
+        "lastModified": 1750215678,
+        "narHash": "sha256-Rc/ytpamXRf6z8UA2SGa4aaWxUXRbX2MAWIu2C8M+ok=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "dad564433178067be1fbdfcce23b546254b6d641",
+        "rev": "5395fb3ab3f97b9b7abca147249fa2e8ed27b192",
         "type": "github"
       },
       "original": {
@@ -36,11 +36,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1736320768,
-        "narHash": "sha256-nIYdTAiKIGnFNugbomgBJR+Xv5F1ZQU+HfaBqJKroC0=",
+        "lastModified": 1744536153,
+        "narHash": "sha256-awS2zRgF4uTwrOKwwiJcByDzDOdo3Q1rPZbiHQg/N38=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "4bc9c909d9ac828a039f288cf872d16d38185db8",
+        "rev": "18dd725c29603f582cf1900e0d25f9f1063dbf11",
         "type": "github"
       },
       "original": {
@@ -62,11 +62,11 @@
         "nixpkgs": "nixpkgs_2"
       },
       "locked": {
-        "lastModified": 1740191166,
-        "narHash": "sha256-WqRxO1Afx8jPYG4CKwkvDFWFvDLCwCd4mxb97hFGYPg=",
+        "lastModified": 1750387093,
+        "narHash": "sha256-MgL1+yNVcSD6OlzSmKt5GS4RmAQnNCjckjgPC1hmMPg=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "74a3fb71b0cc67376ab9e7c31abcd68c813fc226",
+        "rev": "517e9871d182346b53bb7f23fed00810c14db396",
         "type": "github"
       },
       "original": {