Files
yt-dlp-bot/app/ytdlp.go

74 lines
1.6 KiB
Go

package main
import (
"context"
"time"
"github.com/lrstanley/go-ytdlp"
)
type DownloadOptions struct {
EmbedThumbnail bool
IncludeSubtitles bool
}
type ProgressUpdate struct {
Status ytdlp.ProgressStatus
Percent string
ETA time.Duration
Filename string
Phase string
}
func downloadVideo(out_dir, url string, opts DownloadOptions, progressChan chan<- ProgressUpdate) {
defer close(progressChan)
var lastPhase string
dl := ytdlp.New().
SetWorkDir(out_dir).
FormatSort("res,ext:mp4:m4a").
RecodeVideo("mp4").
ProgressFunc(100*time.Millisecond, func(prog ytdlp.ProgressUpdate) {
// Detect phase transition -- differentiate "downloading" as the main download
// and "post processing" when the file name changes, preventing it from appearing "reset"
phase := "downloading"
if prog.Status == ytdlp.ProgressStatusDownloading && prog.Percent() == 0.0 {
// If we already had progress, it's likely post-processing
if lastPhase == "downloading" {
phase = "post-processing"
}
} else if prog.Status != ytdlp.ProgressStatusDownloading {
phase = "post-processing"
}
lastPhase = phase
progressChan <- ProgressUpdate{
Status: prog.Status,
Percent: prog.PercentString(),
ETA: prog.ETA(),
Filename: prog.Filename,
Phase: phase,
}
}).
Output("%(title)s.%(ext)s")
if opts.EmbedThumbnail {
dl = dl.EmbedThumbnail()
}
if opts.IncludeSubtitles {
dl = dl.CompatOptions("no-keep-subs")
dl = dl.EmbedSubs()
dl = dl.SubLangs("en,en*")
dl = dl.WriteAutoSubs()
dl = dl.WriteSubs()
}
_, err := dl.Run(context.TODO(), url)
if err != nil {
panic(err)
}
}