fixup! settings: merge video_params into get_default_arguments

Put default parameters at the beginning of the array. Many cli programs have
subsequent arguments take precedence over preceding arguments.

av1an-core/src/settings.rs

@@ -6,7 +6,7 @@ use std::process::{exit, Command};
 
 use anyhow::{bail, ensure};
 use ffmpeg::format::Pixel;
-use itertools::Itertools;
+use itertools::{Itertools, chain};
 use serde::{Deserialize, Serialize};
 
 use crate::concat::ConcatMethod;
@@ -171,6 +171,7 @@ properly into a mkv file. Specify mkvmerge as the concatenation method by settin
         // TODO: consider using hashmap to store program arguments instead of string vector
         let default_video_params = self.encoder.get_default_arguments(self.input.calculate_tiles());
         let mut skip = false;
+        let mut _default_params: Vec<String> = Vec::new();
         for param in default_video_params {
           if skip && !(param.starts_with("-") && param != "-1") {
             skip = false;
@@ -180,9 +181,10 @@ properly into a mkv file. Specify mkvmerge as the concatenation method by settin
             skip = true;
             continue;
           } else {
-            self.video_params.push(param);
+            _default_params.push(param);
           }
         }
+        self.video_params = chain!(_default_params, self.video_params.clone()).collect();
       }
     }