Disable tiling for SVT (is somehow slower than 1 tile), cap gop size to 255 with VBR

Author: n00mkrad

ff-utils-winforms/Data/CodecUtils.cs

@@ -74,13 +74,13 @@ public static IEncoder GetCodec(SubtitleCodec c)
             return null;
         }
 
-        public static string GetKeyIntArg(MediaFile mediaFile, int intervalSeconds, string arg = "-g ")
+        public static string GetKeyIntArg(MediaFile mediaFile, int intervalSeconds, string arg = "-g ", int max = 480)
         {
             if (mediaFile == null || mediaFile.VideoStreams.Count < 1)
                 return "";
 
             int keyInt = ((float)(mediaFile?.VideoStreams.FirstOrDefault().Rate.GetFloat() * intervalSeconds)).RoundToInt();
-            return $"{arg}{keyInt.Clamp(20, 480)}";
+            return $"{arg}{keyInt.Clamp(12, max)}";
         }
 
         public static string GetAudioArgsForEachStream(MediaFile mf, int baseBitrate, int overrideChannels, List<string> extraArgs = null)

ff-utils-winforms/Data/Codecs/Video/LibSvtAv1.cs

@@ -30,14 +30,14 @@ class LibSvtAv1 : IEncoder
         public CodecArgs GetArgs(Dictionary<string, string> encArgs = null, MediaFile mediaFile = null, Pass pass = Pass.OneOfOne)
         {
             bool vbr = encArgs.ContainsKey("qMode") && (UI.Tasks.QuickConvert.QualityMode)encArgs["qMode"].GetInt() != UI.Tasks.QuickConvert.QualityMode.Crf;
-            if (vbr && pass == Pass.TwoOfTwo) Logger.Log($"WARNING: The 2-Pass implementation of SVT-AV1 is experimental. It might crash or produce inaccurate results.");
+            if (vbr && pass == Pass.OneOfTwo) Logger.Log($"WARNING: The 2-Pass implementation of SVT-AV1 is experimental. It might crash or produce inaccurate results.");
             string q = encArgs.ContainsKey("q") ? encArgs["q"] : QDefault.ToString();
             string preset = encArgs.ContainsKey("preset") ? encArgs["preset"] : Presets[PresetDefault];
             string pixFmt = encArgs.ContainsKey("pixFmt") ? encArgs["pixFmt"] : ColorFormats[ColorFormatDefault];
             string rc = vbr ? $"-rc vbr -b:v {(encArgs.ContainsKey("bitrate") ? encArgs["bitrate"] : "0")}k" : $"-qp {q}";
-            string g = CodecUtils.GetKeyIntArg(mediaFile, Config.GetInt(Config.Key.defaultKeyIntSecs));
+            string g = CodecUtils.GetKeyIntArg(mediaFile, Config.GetInt(Config.Key.defaultKeyIntSecs), "-g ", vbr ? 255 : 480); // SVT can't do GOP size >255 in VBR mode
             string p = pass == Pass.OneOfOne ? "" : (pass == Pass.OneOfTwo ? "-pass 1" : "-pass 2");
-            string tiles = CodecUtils.GetTilingArgs(mediaFile.VideoStreams.FirstOrDefault().Resolution, "-tile_rows ", "-tile_columns ");
+            string tiles = ""; // TEMP DISABLED AS IT SEEMS TO SLOW THINGS DOWN // CodecUtils.GetTilingArgs(mediaFile.VideoStreams.FirstOrDefault().Resolution, "-tile_rows ", "-tile_columns ");
             string cust = encArgs.ContainsKey("custom") ? encArgs["custom"] : "";
             return new CodecArgs($"-c:v libsvtav1 {p} {rc} -preset {preset} {g} {tiles} -pix_fmt {pixFmt} {cust}");
         }

ff-utils-winforms/Data/Codecs/Video/SvtAv1.cs

@@ -37,7 +37,7 @@ public CodecArgs GetArgs(Dictionary<string, string> encArgs = null, MediaFile me
             string pixFmt = encArgs.ContainsKey("pixFmt") ? encArgs["pixFmt"] : ColorFormats[ColorFormatDefault];
             string grain = encArgs.ContainsKey("grainSynthStrength") ? encArgs["grainSynthStrength"] : "0";
             string thr = encArgs.ContainsKey("threads") ? encArgs["threads"] : "0";
-            string tiles = CodecUtils.GetTilingArgs(mediaFile.VideoStreams.FirstOrDefault().Resolution, "--tile-rows ", "--tile-columns ");
+            string tiles = ""; // TEMP DISABLED AS IT SEEMS TO SLOW THINGS DOWN // = CodecUtils.GetTilingArgs(mediaFile.VideoStreams.FirstOrDefault().Resolution, "--tile-rows ", "--tile-columns ");
             string cust = encArgs.ContainsKey("custom") ? encArgs["custom"] : "";
             return new CodecArgs($" -e svt-av1 --force -v \" --preset {preset} --crf {q} --keyint {g} --lp {thr} --film-grain {grain} {tiles} {cust} \" --pix-format {pixFmt}");
         }