Fix ab-av1 ffprobe using env vars instead of CLI args (v2.33)

- Use FFMPEG and FFPROBE environment variables instead of --ffmpeg/--ffprobe flags
- Older ab-av1 versions don't support those command-line arguments
- Sets env vars to point to tdarr-ffmpeg when executing ab-av1

Local/Tdarr_Plugin_av1_svt_converter.js

@@ -10,7 +10,7 @@ const details = () => ({
   Features resolution-aware CRF, source-relative bitrate strategies, ab-av1 auto-CRF, and performance optimizations.
   **Balanced defaults**: Preset 6, CRF 26, tune 0 (VQ), 10-bit, SCD 1, AQ 2, lookahead -1, TF on, keyint -2, fast-decode 0.
   `,
-  Version: '2.32',
+  Version: '2.33',
   Tags: 'video,av1,svt,quality,performance,speed-optimized,vbr,crf,vmaf',
   Inputs: [
     {
@@ -517,18 +517,22 @@ const plugin = (file, librarySettings, inputs, otherArguments) => {
           '--samples', sampleCount.toString(),
           '--encoder', 'libsvtav1',
           '--preset', preset.toString(),
-          '--ffmpeg', 'tdarr-ffmpeg',  // Use Tdarr's ffmpeg binary
-          '--ffprobe', 'tdarr-ffmpeg', // tdarr-ffmpeg acts as both ffmpeg and ffprobe
         ];
 
         const command = `${abav1Path} ${args.join(' ')}`;
 
         // Execute with timeout (5 minutes should be enough for sample encodes)
+        // Set FFMPEG and FFPROBE environment variables to point to tdarr-ffmpeg
         const output = execSync(command, {
           encoding: 'utf8',
           timeout: 300000, // 5 minute timeout
           maxBuffer: 10 * 1024 * 1024, // 10MB buffer
-          stdio: ['pipe', 'pipe', 'pipe']
+          stdio: ['pipe', 'pipe', 'pipe'],
+          env: {
+            ...process.env,
+            FFMPEG: 'tdarr-ffmpeg',
+            FFPROBE: 'tdarr-ffmpeg',
+          }
         });
 
         // Parse ab-av1 output for CRF value