ignore mp4

.gitignore

@@ -1,4 +1,5 @@
 *.gif
 *.jpeg
 *.png
+*.mp4
 .DS_Store

README.md

@@ -24,7 +24,7 @@ go build
 ### Example
 
 ```bash
-./glitch*img img.jpeg 100 30 2
+./glitch_img img.jpeg 100 30 2
 ```
 
 Outputs 100 images into a destination folder _output_ with 30 random bytes of data, running through the file twice

glitch.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"fmt"
 	"math/rand/v2"
 	"os"
 	"path/filepath"
@@ -54,7 +55,47 @@ func glitchImage(inputFile string, outputFile string, shitSize int64, iterations
 		_, err = destination.Write(shit)
 		check(err, "failed to write shit data: %w")
 
-		// fmt.Printf("Successfully wrote %d bytes of shit at offset %d in file %s\n", shitSize, offset, outputFilePath)
 	}
 	return nil
 }
+
+func copyImage(inputFile string, outputFile string) error {
+	// Ensure the output directory exists
+	makeOutputDir()
+
+	// Prepend the "output" directory to the output file
+	outputFilePath := filepath.Join("output", outputFile)
+
+	// Open the source file for reading
+	source, err := os.Open(inputFile)
+	check(err, "failed to open source file: %w")
+	defer source.Close()
+
+	// Create a new file for writing the copy
+	destination, err := os.Create(outputFilePath)
+	check(err, "failed to create output file: %w")
+	defer destination.Close()
+
+	// Copy the contents of the source file to the destination
+	_, err = destination.ReadFrom(source)
+	check(err, "failed to copy file contents: %w")
+
+	return nil
+}
+
+func generateGlitchedSequence(inputFile string, totalImages int, shitSize int64, iterations int64) {
+	for i := 1; i <= totalImages; i++ {
+		outputFileName := fmt.Sprintf("img_glitched_%d.jpeg", i) // Generate unique filenames
+
+		// Randomly decide whether to glitch or copy the image
+		if rand.Int32N(2) == 0 {
+			// Glitched image
+			err := glitchImage(inputFile, outputFileName, shitSize, iterations)
+			check(err, "failed to glitch image: %w")
+		} else {
+			// Normal image
+			err := copyImage(inputFile, outputFileName)
+			check(err, "failed to copy normal image: %w")
+		}
+	}
+}

main.go

@@ -2,13 +2,16 @@ package main
 
 import (
 	"fmt"
+	"math/rand"
 	"os"
 	"os/exec"
-	"path/filepath"
 	"strconv"
+	"time"
 )
 
 func main() {
+	rand.Seed(time.Now().UnixNano())
+
 	if len(os.Args) < 5 {
 		fmt.Println("Usage: go run main.go <source-file> <number-of-copies> <shit-size> <iterations>")
 		return
@@ -29,6 +32,7 @@ func main() {
 
 	iterations, err := strconv.ParseInt(os.Args[4], 10, 8)
 
+	/*
 		for i := 1; i <= numCopies; i++ {
 			outputFile := fmt.Sprintf("%s_glitched_%d%s",
 				stripExtension(sourceFile),
@@ -41,11 +45,48 @@ func main() {
 					fmt.Printf("Error glitching file %d: %v\n", i, err)
 				}
 		}
+	*/
+	generateGlitchedSequence(sourceFile, numCopies, shitSize, iterations)
 
-	fmt.Println("GENREATING GIF YEAHH ")
-	// now run ffmpeg to make a gif!
-	cmd := exec.Command("ffmpeg", "-y", "-framerate 60", "-i", "./output/img_glitched_%d.jpeg output.gif")
-	err = cmd.Run()
+	inputPattern := "./output/img_glitched_%d.jpeg"
+	outputVideo := "output.mp4"
+
+	cmd := exec.Command(
+		"ffmpeg",
+		"-y",
+		"-framerate", "30",
+		"-i", inputPattern,
+		"-vf", "scale=trunc(iw/2)*2:trunc(ih/2)*2,setpts=PTS*2.0", // Scale and slow down playback
+		"-vcodec", "libx264", // Use H.264 codec
+		"-pix_fmt", "yuv420p",
+		"-crf", "23", // Compression level: lower is higher quality (range: 18-28)
+		"-preset", "fast",
+		outputVideo,
+	)
+
+	done := make(chan bool)
+
+	go func() {
+		err := cmd.Run()
 		check(err, "cannot run ffmpeg command!")
+		done <- true
+	}()
+
+	go func() {
+		msg := "Generating MP4"
+		c := 0
+		for {
+			select {
+			case <-done:
+				return
+			default:
+				fmt.Printf("\r%s%s", msg, dots(c))
+				c = (c + 1)
+				time.Sleep(500 * time.Millisecond)
+			}
+		}
+	}()
+	<-done
+	fmt.Println("\nGIF successfully created in ./output.mp4!")
 	//
 }

util.go

@@ -11,6 +11,14 @@ func check(e error, s string) {
 	}
 }
 
+func dots(count int) string {
+	dotStr := ""
+	for i := 0; i < count; i++ {
+		dotStr += "."
+	}
+	return dotStr
+}
+
 func stripExtension(filename string) string {
 	ext := filepath.Ext(filename)
 	return filename[:len(filename)-len(ext)]