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Save transcript #121

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merged 4 commits into from
Feb 1, 2024
Merged

Save transcript #121

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d1754d2
fix: model_size, no_speech, segment timings
makaveli10 Jan 31, 2024
f4027de
add: save_transcript to srt file
makaveli10 Jan 31, 2024
f590446
Merge remote-tracking branch 'upstream/main' into save_transcript
makaveli10 Feb 1, 2024
08575a0
write srt file only for faster_whisper backend
makaveli10 Feb 1, 2024
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54 changes: 52 additions & 2 deletions whisper_live/client.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,29 @@
import time


def format_time(s):
"""Convert seconds (float) to SRT time format."""
hours = int(s // 3600)
minutes = int((s % 3600) // 60)
seconds = int(s % 60)
milliseconds = int((s - int(s)) * 1000)
return f"{hours:02}:{minutes:02}:{seconds:02},{milliseconds:03}"

def create_srt_file(segments, output_file):
with open(output_file, 'w', encoding='utf-8') as srt_file:
segment_number = 1
for segment in segments:
start_time = format_time(float(segment['start']))
end_time = format_time(float(segment['end']))
text = segment['text']

srt_file.write(f"{segment_number}\n")
srt_file.write(f"{start_time} --> {end_time}\n")
srt_file.write(f"{text}\n\n")

segment_number += 1


def resample(file: str, sr: int = 16000):
"""
# https://github.com/openai/whisper/blob/7858aa9c08d98f75575035ecd6481f462d66ca27/whisper/audio.py#L22
Expand Down Expand Up @@ -57,6 +80,7 @@ def __init__(
lang=None,
translate=False,
model="small",
srt_file_path="output.srt"
):
"""
Initializes a Client instance for audio recording and streaming to a server.
Expand Down Expand Up @@ -89,6 +113,7 @@ def __init__(
self.language = lang
self.model = model
self.server_error = False
self.srt_file_path = srt_file_path

if translate:
self.task = "translate"
Expand Down Expand Up @@ -127,6 +152,7 @@ def __init__(
self.ws_thread.start()

self.frames = b""
self.transcript = []
print("[INFO]: * recording")

def on_message(self, ws, message):
Expand Down Expand Up @@ -166,6 +192,8 @@ def on_message(self, ws, message):

if "message" in message.keys() and message["message"] == "SERVER_READY":
self.recording = True
self.server_backend = message["backend"]
print(f"[INFO]: Server Running with backend {self.server_backend}")
return

if "language" in message.keys():
Expand All @@ -181,12 +209,21 @@ def on_message(self, ws, message):

message = message["segments"]
text = []
if len(message):
for seg in message:
n_segments = len(message)

if n_segments:
for i, seg in enumerate(message):
if text and text[-1] == seg["text"]:
# already got it
continue
text.append(seg["text"])

if i == n_segments-1:
self.last_segment = seg
elif self.server_backend == "faster_whisper":
if not len(self.transcript) or float(seg['start']) >= float(self.transcript[-1]['end']):
self.transcript.append(seg)

# keep only last 3
if len(text) > 3:
text = text[-3:]
Expand Down Expand Up @@ -302,6 +339,9 @@ def play_file(self, filename):
assert self.last_response_recieved
while time.time() - self.last_response_recieved < self.disconnect_if_no_response_for:
continue

if self.server_backend == "faster_whisper":
self.write_srt_file(self.srt_file_path)
self.stream.close()
self.close_websocket()

Expand All @@ -311,6 +351,8 @@ def play_file(self, filename):
self.stream.close()
self.p.terminate()
self.close_websocket()
if self.server_backend == "faster_whisper":
self.write_srt_file(self.srt_file_path)
print("[INFO]: Keyboard interrupt.")

def close_websocket(self):
Expand Down Expand Up @@ -438,6 +480,8 @@ def record(self, out_file="output_recording.wav"):
t.start()
n_audio_file += 1
self.frames = b""
if self.server_backend == "faster_whisper":
self.write_srt_file(self.srt_file_path)

except KeyboardInterrupt:
if len(self.frames):
Expand All @@ -451,6 +495,8 @@ def record(self, out_file="output_recording.wav"):
self.close_websocket()

self.write_output_recording(n_audio_file, out_file)
if self.server_backend == "faster_whisper":
self.write_srt_file(self.srt_file_path)

def write_output_recording(self, n_audio_file, out_file):
"""
Expand Down Expand Up @@ -487,6 +533,10 @@ def write_output_recording(self, n_audio_file, out_file):
os.remove(in_file)
wavfile.close()

def write_srt_file(self, output_path="output.srt"):
self.transcript.append(self.last_segment)
create_srt_file(self.transcript, output_path)


class TranscriptionClient:
"""
Expand Down
18 changes: 13 additions & 5 deletions whisper_live/server.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -407,16 +407,17 @@ def __init__(
json.dumps(
{
"uid": self.client_uid,
"message": self.SERVER_READY
"message": self.SERVER_READY,
"backend": "tensorrt"
}
)
)

def warmup(self, warmup_steps=10):
logging.info("[INFO:] Warming up TensorRT engine..")
mel, duration = self.transcriber.log_mel_spectrogram("tests/jfk.flac")
mel, _ = self.transcriber.log_mel_spectrogram("tests/jfk.flac")
for i in range(warmup_steps):
last_segment = self.transcriber.transcribe(mel)
self.transcriber.transcribe(mel)

def set_eos(self, eos):
self.lock.acquire()
Expand Down Expand Up @@ -560,7 +561,7 @@ def __init__(
multilingual=False,
language=None,
client_uid=None,
model="small",
model="small.en",
initial_prompt=None,
vad_parameters=None,
):
Expand Down Expand Up @@ -594,6 +595,7 @@ def __init__(
self.task = task
self.initial_prompt = initial_prompt
self.vad_parameters = vad_parameters or {"threshold": 0.5}
self.no_speech_thresh = 0.45

device = "cuda" if torch.cuda.is_available() else "cpu"

Expand All @@ -614,7 +616,8 @@ def __init__(
json.dumps(
{
"uid": self.client_uid,
"message": self.SERVER_READY
"message": self.SERVER_READY,
"backend": "faster_whisper"
}
)
)
Expand Down Expand Up @@ -728,6 +731,7 @@ def speech_to_text(self):
if time.time() - self.t_start > self.add_pause_thresh:
self.text.append('')

if not len(segments): continue
try:
self.websocket.send(
json.dumps({
Expand Down Expand Up @@ -780,6 +784,10 @@ def update_segments(self, segments, duration):
text_ = s.text
self.text.append(text_)
start, end = self.timestamp_offset + s.start, self.timestamp_offset + min(duration, s.end)

if start >= end: continue
if s.no_speech_prob > self.no_speech_thresh: continue

self.transcript.append(self.format_segment(start, end, text_))

offset = min(duration, s.end)
Expand Down
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