Duration analysed as 0 for files with format wav

When using the _, mediaFormat, err := ffmpeg.GetCodecInfoBytes(bytearr) in common/utils.go in go-livepeer if the file is of .wav format the audio duration is calculated as 0 which throws error and doesnt run the audio-to-text job.

One simple solution to this issue is to have a sepate function that handles the .wav files

func estimateWavDuration(data []byte) int64 {
	if len(data) < 44 {
		return 0
	}
	// Sample rate: bytes 24-27 (little endian)
	sampleRate := int(data[24]) | int(data[25])<<8 | int(data[26])<<16 | int(data[27])<<24
	// Bits per sample: bytes 34-35 (little endian)
	bitsPerSample := int(data[34]) | int(data[35])<<8
	// Num channels: bytes 22-23 (little endian)
	numChannels := int(data[22]) | int(data[23])<<8
	// Data size: bytes 40-43 (little endian)
	dataSize := int(data[40]) | int(data[41])<<8 | int(data[42])<<16 | int(data[43])<<24

	if sampleRate == 0 || bitsPerSample == 0 || numChannels == 0 {
		return 0
	}
	bytesPerSec := sampleRate * numChannels * bitsPerSample / 8
	if bytesPerSec == 0 {
		return 0
	}
	return int64(dataSize / bytesPerSec)
}

and add condition in

func GetCodecInfoBytes(data []byte) (CodecStatus, MediaFormatInfo, error) {

to use the above funtion

	// Fallback for wav: try to estimate duration from header if still zero
	if format.DurSecs == 0 && format.Format == "wav" {
		format.DurSecs = estimateWavDuration(data)
	}

This resolved the issue of not getting audio duration and job failing.