A simple little command line tool in Go to crunch my videos. This includes many settings I've found that compress "code videos" really well. YMMV.
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vidcrunch/main.go

67 lines
1.5 KiB

package main
import (
"fmt"
"log"
"lcthw.dev/vidcrunch/config"
"github.com/modfy/fluent-ffmpeg"
)
const DevNull = "NUL"
func Run(pass int, output string) {
pid := 1
encode := fluentffmpeg.NewCommand("")
mp4_opts := []string{
"-vf", fmt.Sprintf("scale=%s:flags=lanczos", config.Settings.Scale),
"-aspect", config.Settings.Scale,
"-pix_fmt", "yuv420p",
"-tune", config.Settings.Tune,
"-movflags", "faststart",
"-pass", fmt.Sprint(pass),
"-passlogfile", fmt.Sprintf("ffmpeg2pass-%d.log", pid),
"-preset", config.Settings.Speed,
}
if pass != 3 {
mp4_opts = append(mp4_opts, "-an")
} else {
encode.AudioCodec("aac")
mp4_opts = append(mp4_opts,
"-b:a", fmt.Sprint(config.Settings.AudioBitrate * 1024))
}
if config.Settings.Test > 0 {
encode.InputOptions(
"-ss", fmt.Sprintf("00:%d", config.Settings.TestStart))
mp4_opts = append(mp4_opts, "-t", fmt.Sprint(config.Settings.Test))
}
encode.VideoCodec("libx264").
VideoBitRate(config.Settings.VideoBitrate * 1024).
FrameRate(config.Settings.FPS).
ConstantRateFactor(config.Settings.CRF)
encode.OutputOptions(mp4_opts...)
cmd := encode.InputPath(config.Settings.Input).
OutputFormat("mp4").
OutputPath(output).
Build()
fmt.Println("COMMAND", cmd.String())
err := cmd.Run()
if err != nil { log.Fatalf("%v", err) }
}
func main() {
config.Load()
fmt.Println(config.Settings)
Run(1, DevNull)
Run(2, DevNull)
Run(3, config.Settings.Output)
}