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feat: implement audio duration retrieval without ffmpeg dependencies

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This commit is contained in:
CaIon
2025-10-28 15:50:45 +08:00
parent 6791eb72ba
commit 2b70095b47
10 changed files with 430 additions and 139 deletions
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39
common/utils.go
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@@ -1,8 +1,6 @@
package common
import (
"bytes"
"context"
crand "crypto/rand"
"encoding/base64"
"encoding/json"
@@ -329,43 +327,6 @@ func SaveTmpFile(filename string, data io.Reader) (string, error) {
return f.Name(), nil
}
// GetAudioDuration returns the duration of an audio file in seconds.
func GetAudioDuration(ctx context.Context, filename string, ext string) (float64, error) {
// ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 {{input}}
c := exec.CommandContext(ctx, "ffprobe", "-v", "error", "-show_entries", "format=duration", "-of", "default=noprint_wrappers=1:nokey=1", filename)
output, err := c.Output()
if err != nil {
return 0, errors.Wrap(err, "failed to get audio duration")
}
durationStr := string(bytes.TrimSpace(output))
if durationStr == "N/A" {
// Create a temporary output file name
tmpFp, err := os.CreateTemp("", "audio-*"+ext)
if err != nil {
return 0, errors.Wrap(err, "failed to create temporary file")
}
tmpName := tmpFp.Name()
// Close immediately so ffmpeg can open the file on Windows.
_ = tmpFp.Close()
defer os.Remove(tmpName)
// ffmpeg -y -i filename -vcodec copy -acodec copy <tmpName>
ffmpegCmd := exec.CommandContext(ctx, "ffmpeg", "-y", "-i", filename, "-vcodec", "copy", "-acodec", "copy", tmpName)
if err := ffmpegCmd.Run(); err != nil {
return 0, errors.Wrap(err, "failed to run ffmpeg")
}
// Recalculate the duration of the new file
c = exec.CommandContext(ctx, "ffprobe", "-v", "error", "-show_entries", "format=duration", "-of", "default=noprint_wrappers=1:nokey=1", tmpName)
output, err := c.Output()
if err != nil {
return 0, errors.Wrap(err, "failed to get audio duration after ffmpeg")
}
durationStr = string(bytes.TrimSpace(output))
}
return strconv.ParseFloat(durationStr, 64)
}
// BuildURL concatenates base and endpoint, returns the complete url string
func BuildURL(base string, endpoint string) string {
u, err := url.Parse(base)