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fix(audio): ensure full WhatsApp compatibility for audio conversion (libopus, 48kHz, mono)

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edisoncm-ti 2025-05-16 19:09:14 -03:00
parent 3feb0c7e1b
commit 170d5d8ad2
1 changed files with 46 additions and 11 deletions
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55
main.go
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@ -159,19 +159,54 @@ func validateAPIKey(c *gin.Context) bool {
func convertAudio(inputData []byte, format string) ([]byte, int, error) {
var cmd *exec.Cmd
switch format {
case "mp3":
cmd = exec.Command("ffmpeg", "-i", "pipe:0",
"-ar", "44100", // sample rate
"-ac", "2", // canais (stereo)
"-b:a", "128k", // bitrate
"-c:a", "libmp3lame", // codec específico
"-f", "mp3", // formato
"pipe:1")
case "mp4":
cmd = exec.Command("ffmpeg", "-i", "pipe:0", "-vn", "-c:a", "aac", "-b:a", "128k", "-f", "adts", "pipe:1")
// Special handling for MP4
cmd = exec.Command("ffmpeg", "-i", "pipe:0",
"-vn",
"-c:a",
"aac",
"-b:a", "128k",
"-f", "adts",
"pipe:1",
)
default:
cmd = exec.Command("ffmpeg", "-i", "pipe:0", "-ac", "1", "-ar", "16000", "-c:a", "libopus", "-f", "ogg", "pipe:1")
// Any other audio format (e.g., .oga, .ogg, .mp3, .mp4, .m4a, .wav, etc.)
cmd = exec.Command("ffmpeg", "-i", "pipe:0",
"-f",
"ogg",
"-vn",
"-c:a",
"libopus",
"-avoid_negative_ts",
"make_zero",
"-b:a",
"128k",
"-ar",
"48000",
"-ac",
"1",
"-write_xing",
"0",
"-compression_level",
"10",
"-application",
"voip",
"-fflags",
"+bitexact",
"-flags",
"+bitexact",
"-id3v2_version",
"0",
"-map_metadata",
"-1",
"-map_chapters",
"-1",
"-write_bext",
"0",
"pipe:1",
)
}
outBuffer := bufferPool.Get().(*bytes.Buffer)
errBuffer := bufferPool.Get().(*bytes.Buffer)