- 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
- ab-av1 now uses --ffmpeg and --ffprobe flags to locate tdarr-ffmpeg
- No symlinks needed - uses existing Tdarr binaries
- tdarr-ffmpeg acts as both ffmpeg and ffprobe (multi-call binary)
- Fixed: Binary exists but X_OK check fails on Docker mounts
- Added: 'which ab-av1' fallback detection
- Added: Better debug logging when X_OK check fails
- Binary will now be found even with permission issues
