fix: video visualizer

.gitignore

@@ -21,4 +21,4 @@
 go.work
 /Session.vim
 /maze.png
-/maze_sol.png
+/sol.png

visualizer/video.go

@@ -8,7 +8,6 @@ import (
 	"os"
 	"os/exec"
 	"path"
-	"sync"
 
 	"github.com/mazznoer/colorgrad"
 )
@@ -25,7 +24,6 @@ func (v *VideoVisualizer) Init(*maze.Maze) {
 		panic(err)
 	}
 	v.ffmpeg_cmd = path
-	println(path)
 }
 func (v *VideoVisualizer) Run(lets_go chan<- bool) { lets_go <- true }
 
@@ -36,32 +34,26 @@ func (v *VideoVisualizer) Visualize(solved_chan <-chan *maze.SolvedMaze) {
 	if err != nil {
 		panic(err)
 	}
-	var wg sync.WaitGroup
 	i := 0
 	for solved := range solved_chan {
-		wg.Add(1)
-		go func() {
 		img_writer := writer.ImageWriter{
 			Filename:         path.Join(tmp_dir, fmt.Sprintf("%07v.png", i)),
 			Maze:             solved,
-				CellWidth:        2,
-				CellHeight:       2,
+			CellWidth:        5,
+			CellHeight:       5,
 			WallColor:        color.Black,
 			PathColor:        color.White,
 			SolutionGradient: colorgrad.Warm(),
 		}
 		img_writer.Write()
-			wg.Done()
-		}()
 		i++
 	}
-	wg.Wait()
 	cmd := exec.Command(
 		v.ffmpeg_cmd,
 		"-y",
 		"-pattern_type", "glob",
 		"-i", path.Join(tmp_dir, "*.png"),
-		"-framerate", fmt.Sprint(v.Framerate),
+		"-r", fmt.Sprint(int(v.Framerate)),
 		v.Filename,
 	)
 	err = cmd.Run()