diff options
| author | vin <git@vineetk.net> | 2025-07-18 22:45:53 -0400 |
|---|---|---|
| committer | vin <git@vineetk.net> | 2025-07-18 23:47:37 -0400 |
| commit | d9fdeaf5af49f065c2a5041d6e6230a2f371f53a (patch) | |
| tree | c34c3b300f0a5e08e4f080bcdaa62687397cda15 | |
initial payload
| -rw-r--r-- | main.py | 292 | ||||
| -rw-r--r-- | transcript.py | 42 |
2 files changed, 334 insertions, 0 deletions
| @@ -0,0 +1,292 @@ | |||
| 1 | import re | ||
| 2 | import sys | ||
| 3 | from openai import OpenAI | ||
| 4 | from datetime import datetime, timedelta | ||
| 5 | |||
| 6 | def parse_whisper_transcript(transcript_text: str) -> list[dict]: | ||
| 7 | """ | ||
| 8 | Parses a Whisper-generated transcript into a list of dictionaries, | ||
| 9 | each containing 'start_time', 'end_time', and 'text'. | ||
| 10 | """ | ||
| 11 | segments = [] | ||
| 12 | # Regex to match timestamp format [HH:MM:SS.mmm --> HH:MM:SS.mmm] and the following text | ||
| 13 | # It now correctly handles the leading space before text | ||
| 14 | pattern = re.compile(r"^\[(\d{2}:\d{2}:\d{2}\.\d{3}) --> (\d{2}:\d{2}:\d{2}\.\d{3})\]\s*(.*)$", re.MULTILINE) | ||
| 15 | |||
| 16 | for line in transcript_text.strip().split('\n'): | ||
| 17 | match = pattern.match(line) | ||
| 18 | if match: | ||
| 19 | start_time, end_time, text = match.groups() | ||
| 20 | segments.append({ | ||
| 21 | "start_time": start_time, | ||
| 22 | "end_time": end_time, | ||
| 23 | "text": text.strip() | ||
| 24 | }) | ||
| 25 | return segments | ||
| 26 | |||
| 27 | def format_transcript_segment(segments: list[dict]) -> str: | ||
| 28 | """Formats a list of segment dictionaries back into the prompt-friendly string.""" | ||
| 29 | formatted_lines = [] | ||
| 30 | for s in segments: | ||
| 31 | formatted_lines.append(f"[{s['start_time']} --> {s['end_time']}] {s['text']}") | ||
| 32 | return "\n".join(formatted_lines) | ||
| 33 | |||
| 34 | def timestamp_to_seconds(ts_str: str) -> float: | ||
| 35 | """Converts HH:MM:SS.mmm string to total seconds.""" | ||
| 36 | parts = ts_str.split(':') | ||
| 37 | hours = int(parts[0]) | ||
| 38 | minutes = int(parts[1]) | ||
| 39 | seconds_ms_str = parts[2].split('.') | ||
| 40 | seconds = int(seconds_ms_str[0]) | ||
| 41 | milliseconds = int(seconds_ms_str[1]) | ||
| 42 | return hours * 3600 + minutes * 60 + seconds + milliseconds / 1000.0 | ||
| 43 | |||
| 44 | def seconds_to_timestamp(total_seconds: float) -> str: | ||
| 45 | """Converts total seconds to HH:MM:SS.mmm string.""" | ||
| 46 | # Split total_seconds into integer seconds and fractional milliseconds | ||
| 47 | integer_seconds = int(total_seconds) | ||
| 48 | milliseconds = int((total_seconds - integer_seconds) * 1000) | ||
| 49 | |||
| 50 | td = timedelta(seconds=integer_seconds) | ||
| 51 | hours, remainder = divmod(td.total_seconds(), 3600) | ||
| 52 | minutes, seconds = divmod(remainder, 60) | ||
| 53 | |||
| 54 | return f"{int(hours):02}:{int(minutes):02}:{int(seconds):02}.{milliseconds:03}" | ||
| 55 | |||
| 56 | def chunk_transcript( | ||
| 57 | segments: list[dict], | ||
| 58 | trigger_phrase: str = "brought to you by", | ||
| 59 | max_chunk_duration_minutes: int = 4 # New parameter for max duration | ||
| 60 | ) -> list[list[dict]]: | ||
| 61 | """ | ||
| 62 | Chunks the transcript segments based on occurrences of a trigger phrase, | ||
| 63 | or a maximum time duration, whichever comes first. | ||
| 64 | Each chunk starts at a trigger phrase and ends just before the next, | ||
| 65 | or when max_chunk_duration_minutes is reached, or at the end of transcript. | ||
| 66 | """ | ||
| 67 | chunks = [] | ||
| 68 | current_chunk_start_idx = 0 | ||
| 69 | max_chunk_duration_seconds = max_chunk_duration_minutes * 60 | ||
| 70 | |||
| 71 | # Ensure there are segments to process | ||
| 72 | if not segments: | ||
| 73 | return [] | ||
| 74 | |||
| 75 | for i, segment in enumerate(segments): | ||
| 76 | is_trigger_segment = trigger_phrase.lower() in segment["text"].lower() | ||
| 77 | |||
| 78 | # Get the start time of the current logical chunk being built | ||
| 79 | current_chunk_start_time_seconds = timestamp_to_seconds(segments[current_chunk_start_idx]['start_time']) | ||
| 80 | |||
| 81 | # Get the end time of the current segment being considered for inclusion | ||
| 82 | current_segment_end_time_seconds = timestamp_to_seconds(segment['end_time']) | ||
| 83 | |||
| 84 | # Calculate the duration if this segment were to be the end of the current chunk | ||
| 85 | current_chunk_duration = current_segment_end_time_seconds - current_chunk_start_time_seconds | ||
| 86 | |||
| 87 | # Condition 1: New trigger phrase found (and it's not the start of the very first chunk) | ||
| 88 | # We also need to ensure the trigger is not the first segment of the current chunk, | ||
| 89 | # otherwise it would create an empty chunk. | ||
| 90 | if is_trigger_segment and (i > current_chunk_start_idx): | ||
| 91 | # End the previous chunk *before* this new trigger segment | ||
| 92 | chunks.append(segments[current_chunk_start_idx:i]) | ||
| 93 | current_chunk_start_idx = i # Start a new chunk from this trigger segment | ||
| 94 | continue # Move to the next segment after processing the split | ||
| 95 | |||
| 96 | # Condition 2: Max duration exceeded | ||
| 97 | # This check should happen for any segment after the start of a chunk | ||
| 98 | if current_chunk_duration >= max_chunk_duration_seconds and i > current_chunk_start_idx: | ||
| 99 | # End the current chunk *at* the current segment | ||
| 100 | chunks.append(segments[current_chunk_start_idx:i+1]) | ||
| 101 | current_chunk_start_idx = i + 1 # Start a new chunk from the next segment | ||
| 102 | # We don't 'continue' here, as the new chunk needs to start and the loop will increment 'i' | ||
| 103 | |||
| 104 | # Add the last chunk if any segments remain. This covers the case where the transcript | ||
| 105 | # ends without another trigger or exceeding the time limit. | ||
| 106 | if current_chunk_start_idx < len(segments): | ||
| 107 | chunks.append(segments[current_chunk_start_idx:]) | ||
| 108 | |||
| 109 | return chunks | ||
| 110 | |||
| 111 | def call_openai_api(client: OpenAI, chunk_text: str, system_prompt: str) -> str: | ||
| 112 | """ | ||
| 113 | Makes an API call to OpenAI with the given system prompt and transcript chunk. | ||
| 114 | """ | ||
| 115 | try: | ||
| 116 | response = client.chat.completions.create( | ||
| 117 | #model="Gemma-3-4B_32K", | ||
| 118 | #model="google/gemini-2.0-flash-exp:free", | ||
| 119 | model="gpt-4.1", | ||
| 120 | messages=[ | ||
| 121 | {"role": "system", "content": system_prompt}, | ||
| 122 | {"role": "user", "content": f"Input Transcript:\n{chunk_text}"} | ||
| 123 | ], | ||
| 124 | temperature=0.0, | ||
| 125 | ) | ||
| 126 | print(response) | ||
| 127 | # Extract content from the first choice's message | ||
| 128 | return response.choices[0].message.content.strip() | ||
| 129 | except Exception as e: | ||
| 130 | print(f"Error calling OpenAI API: {e}") | ||
| 131 | return "" | ||
| 132 | |||
| 133 | def main(): | ||
| 134 | # --- Configuration --- | ||
| 135 | client = OpenAI( | ||
| 136 | #api_key="none", | ||
| 137 | api_key="REDACTED", | ||
| 138 | #base_url="http://localhost:8080/v1", | ||
| 139 | base_url="https://api.openai.com/v1", | ||
| 140 | ) | ||
| 141 | |||
| 142 | with open(sys.argv[1], "r", encoding="utf-8") as f: | ||
| 143 | full_transcript_content = f.read() | ||
| 144 | |||
| 145 | # The system prompt you provided earlier, including examples | ||
| 146 | SYSTEM_PROMPT_TEMPLATE = """ | ||
| 147 | You are an expert podcast content analyzer. Your task is to identify and extract pre-recorded dynamic advertising segments from podcast transcripts. These ads typically have a distinct tone shift, often using more direct, persuasive language, and frequently include calls to action, product mentions, or specific brand names. | ||
| 148 | |||
| 149 | You will be provided with segments of a podcast transcript, formatted with timestamps. Your output must be ONLY the start and end timestamp of the identified advertising segment, separated by a hyphen, in the format HH:MM:SS.mmm-HH:MM:SS.mmm. If there are multiple ad segments, output each on a new line. If no ad segments are found, output nothing. | ||
| 150 | |||
| 151 | **Strict Rules:** | ||
| 152 | - Only identify segments that are clearly pre-recorded dynamic ads with a noticeable tone shift. | ||
| 153 | - Do NOT include host-read sponsorships that blend naturally with the content. Focus only on the "distracting" pre-recorded elements. | ||
| 154 | - The end of an ad segment is marked by the return to the original podcast discussion, a clear transition to new content, or the end of the ad's persuasive language and calls to action. | ||
| 155 | - Ensure the start and end times correspond precisely to the ad segment in the transcript. | ||
| 156 | - Output ONLY the timestamp range(s) in the specified format. No other text, no JSON, no explanations. | ||
| 157 | |||
| 158 | **Examples:** | ||
| 159 | |||
| 160 | --- | ||
| 161 | **Example 1 Input:** | ||
| 162 | [00:00:00.000 --> 00:00:02.480] This episode is brought to you by Apple Cash. | ||
| 163 | [00:00:02.480 --> 00:00:07.040] Sending payments used to be clunky, unnecessarily difficult, and weirdly invasive at times, | ||
| 164 | [00:00:07.040 --> 00:00:08.560] until I discovered Apple Cash. | ||
| 165 | [00:00:08.560 --> 00:00:11.020] With Apple Cash, payments are private by design, | ||
| 166 | [00:00:11.020 --> 00:00:14.900] so I don't have to deal with public feeds, awkward reactions, or other payment drama. | ||
| 167 | [00:00:14.900 --> 00:00:18.780] I can send cash in messages right in the conversations I'm already having, | ||
| 168 | [00:00:18.780 --> 00:00:20.060] which is super convenient. | ||
| 169 | [00:00:20.060 --> 00:00:22.600] There's also a cool feature called Tap to Cash | ||
| 170 | [00:00:22.600 --> 00:00:25.900] that lets you pay somebody nearby by holding your iPhone near theirs. | ||
| 171 | [00:00:25.900 --> 00:00:28.560] Switch to Apple Cash and start sending privately. | ||
| 172 | [00:00:28.620 --> 00:00:31.900] Apple Cash services are provided by Green Dot Bank, member FDIC. | ||
| 173 | |||
| 174 | **Example 1 Output:** | ||
| 175 | 00:00:00.000-00:00:31.900 | ||
| 176 | |||
| 177 | --- | ||
| 178 | **Example 2 Input:** | ||
| 179 | [00:38:07.480 --> 00:38:10.820] This podcast is brought to you by Carvana. | ||
| 180 | [00:38:10.820 --> 00:38:13.660] Got a car to sell, but no time to waste? | ||
| 181 | [00:38:13.660 --> 00:38:17.820] Hop on to Carvana.com to get a real offer for your car in seconds. | ||
| 182 | [00:38:17.820 --> 00:38:23.060] All you have to do is enter your license plate, answer a few quick questions, and if you accept | ||
| 183 | [00:38:23.060 --> 00:38:26.000] the offer, Carvana will pay you as soon as you hand the keys over. | ||
| 184 | [00:38:26.360 --> 00:38:29.060] They even offer same day pickup in many cities. | ||
| 185 | [00:38:29.060 --> 00:38:35.740] Save your time, score some cash, and sell your car the convenient way to Carvana. | ||
| 186 | [00:38:36.360 --> 00:38:37.000] Pickup times vary. | ||
| 187 | [00:38:37.000 --> 00:38:37.620] Fees may apply. | ||
| 188 | |||
| 189 | **Example 2 Output:** | ||
| 190 | 00:38:07.480-00:38:37.620 | ||
| 191 | |||
| 192 | --- | ||
| 193 | **Example 3 Input:** | ||
| 194 | [00:14:46.000 --> 00:14:50.860] This episode is brought to you by Diet Coke. | ||
| 195 | [00:14:50.860 --> 00:14:53.800] You know that moment when you just need to hit pause and refresh? | ||
| 196 | [00:14:54.380 --> 00:14:56.320] An ice-cold Diet Coke isn't just a break. | ||
| 197 | [00:14:56.320 --> 00:14:59.800] It's your chance to catch your breath and savor a moment that's all about you. | ||
| 198 | [00:15:00.000 --> 00:15:02.540] Always refreshing, still the same great taste. | ||
| 199 | [00:15:02.540 --> 00:15:03.500] Diet Coke. | ||
| 200 | [00:15:03.500 --> 00:15:04.860] Make time for you time. | ||
| 201 | |||
| 202 | **Example 3 Output:** | ||
| 203 | 00:14:46.000-00:15:04.860 | ||
| 204 | |||
| 205 | --- | ||
| 206 | **Example 4 Input:** | ||
| 207 | [00:15:00.000 --> 00:15:20.000] So what are your thoughts on the new policy changes that were just announced? | ||
| 208 | [00:15:20.000 --> 00:15:45.000] Well, I think it's a step in the right direction, but there are definitely some areas that need more clarification. | ||
| 209 | [00:15:45.000 --> 00:16:10.000] For instance, the section on renewable energy credits could be more explicit. | ||
| 210 | [00:16:10.000 --> 00:16:15.000] This next part of our conversation might be a bit technical, but I think it's important to delve into the specifics. | ||
| 211 | |||
| 212 | **Example 4 Output:** | ||
| 213 | |||
| 214 | |||
| 215 | --- | ||
| 216 | **Example 5 Input:** | ||
| 217 | [00:11:27.080 --> 00:11:28.180] You're going to be using the same thing. | ||
| 218 | [00:11:28.180 --> 00:11:32.480] You've got to, like, get outside that bubble or you're just, you're going to bore yourself. | ||
| 219 | [00:11:32.480 --> 00:11:40.820] This episode of Cortex is brought to you by Squarespace, the all-in-one website platform designed to help you stand out and succeed online. | ||
| 220 | [00:11:40.820 --> 00:11:43.920] Whether you're just getting started or scaling your own business, | ||
| 221 | [00:11:43.920 --> 00:11:46.840] Squarespace gives you everything you need to claim your domain, | ||
| 222 | [00:11:46.840 --> 00:11:49.380] showcase your offerings of a professional website, | ||
| 223 | [00:14:50.000 --> 00:14:52.220] grow your brand, and get paid all in one place. | ||
| 224 | [00:14:52.220 --> 00:14:54.960] It's so easy to get started with Squarespace. | ||
| 225 | [00:14:54.960 --> 00:14:59.380] In fact, they've made it easier than ever before with their new system, Blueprint AI. | ||
| 226 | [00:14:59.380 --> 00:15:05.140] Squarespace's AI-enhanced website builder lets you quickly and easily build a site bespoke to your | ||
| 227 | business. | ||
| 228 | [00:15:05.140 --> 00:15:08.140] Just input some basic information about your industry and goals. | ||
| 229 | [00:15:08.140 --> 00:15:09.480] This isn't the only way. | ||
| 230 | [00:15:09.480 --> 00:15:12.200] In fact, you can go in and choose from one of their beautiful templates, | ||
| 231 | [00:15:12.200 --> 00:15:14.620] their professionally designed beautiful templates, | ||
| 232 | [00:15:14.940 --> 00:15:16.900] and customize it to your heart's content. | ||
| 233 | [00:15:16.900 --> 00:15:20.800] One of the things that I've always loved about Squarespace is their drag-and-drop tools, | ||
| 234 | [00:15:20.800 --> 00:15:26.440] buttons, sliders, selectors, where you can go in and customize your design for your website | ||
| 235 | [00:15:26.440 --> 00:15:29.420] by actually looking at the design for your website while you're doing it. | ||
| 236 | [00:15:29.460 --> 00:15:30.620] You don't need to know any code. | ||
| 237 | [00:15:30.620 --> 00:15:31.880] I love this. | ||
| 238 | [00:13:31.200 --> 00:13:35.220] I want to talk about the other devices that are in your working life. | ||
| 239 | [00:13:35.220 --> 00:13:39.060] What are the other computers that you use to get things done? | ||
| 240 | [00:13:39.060 --> 00:13:45.000] So there are three computers that live in my life. | ||
| 241 | |||
| 242 | **Example 5 Output:** | ||
| 243 | 00:11:32.480-00:13:31.200 | ||
| 244 | """ | ||
| 245 | # --- Processing --- | ||
| 246 | print("Parsing full transcript...") | ||
| 247 | parsed_segments = parse_whisper_transcript(full_transcript_content) | ||
| 248 | print(f"Parsed {len(parsed_segments)} segments.") | ||
| 249 | |||
| 250 | print("Chunking transcript...") | ||
| 251 | # Adjust the trigger phrase if "brought to you by" isn't consistently sufficient | ||
| 252 | # For more complex cases, you might use a list of trigger phrases: | ||
| 253 | # ["brought to you by", "a quick word from our sponsor", "we'll be right back"] | ||
| 254 | transcript_chunks = chunk_transcript(parsed_segments, trigger_phrase="brought to you by") | ||
| 255 | print(f"Created {len(transcript_chunks)} chunks.") | ||
| 256 | |||
| 257 | print(transcript_chunks) | ||
| 258 | |||
| 259 | all_ad_timestamps = [] | ||
| 260 | |||
| 261 | # Process each chunk with the OpenAI API | ||
| 262 | for i, chunk in enumerate(transcript_chunks): | ||
| 263 | if not chunk: | ||
| 264 | continue | ||
| 265 | |||
| 266 | chunk_text_for_api = format_transcript_segment(chunk) | ||
| 267 | print(f"\nProcessing Chunk {i+1}/{len(transcript_chunks)} (starting at {chunk[0]['start_time']})...") | ||
| 268 | |||
| 269 | # Add the "Your Turn" header before the chunk content | ||
| 270 | user_prompt_content = f"**Your Turn - Input Transcript:**\n{chunk_text_for_api}" | ||
| 271 | |||
| 272 | print(user_prompt_content) | ||
| 273 | |||
| 274 | ad_timestamps_str = call_openai_api(client, user_prompt_content, SYSTEM_PROMPT_TEMPLATE) | ||
| 275 | |||
| 276 | if ad_timestamps_str: | ||
| 277 | # Split by newlines in case the model returns multiple segments | ||
| 278 | found_timestamps = [ts.strip() for ts in ad_timestamps_str.split('\n') if ts.strip()] | ||
| 279 | all_ad_timestamps.extend(found_timestamps) | ||
| 280 | print(f"Found ad timestamps in chunk {i+1}: {', '.join(found_timestamps)}") | ||
| 281 | else: | ||
| 282 | print(f"No ad timestamps found in chunk {i+1}.") | ||
| 283 | |||
| 284 | print("\n--- All Identified Ad Timestamps ---") | ||
| 285 | if all_ad_timestamps: | ||
| 286 | for ts in all_ad_timestamps: | ||
| 287 | print(ts) | ||
| 288 | else: | ||
| 289 | print("No ad segments found in the entire transcript.") | ||
| 290 | |||
| 291 | if __name__ == "__main__": | ||
| 292 | main() | ||
diff --git a/transcript.py b/transcript.py new file mode 100644 index 0000000..e4a63dc --- /dev/null +++ b/transcript.py | |||
| @@ -0,0 +1,42 @@ | |||
| 1 | import os | ||
| 2 | import subprocess | ||
| 3 | import sys | ||
| 4 | from tqdm import tqdm | ||
| 5 | |||
| 6 | # hardcoded because lazy | ||
| 7 | WHISPER_DIR = "/data/src/clones/llm/whisper.cpp" | ||
| 8 | WHISPER_MODEL = "ggml-large-v3-turbo-q5_0" | ||
| 9 | #WHISPER_MODEL = "ggml-distil-large-v3.5" | ||
| 10 | |||
| 11 | def transcribe_file(input_file): | ||
| 12 | base, _ = os.path.splitext(input_file) | ||
| 13 | output_file = base + '.txt' | ||
| 14 | |||
| 15 | if os.path.exists(output_file): | ||
| 16 | return | ||
| 17 | |||
| 18 | whisper_cli = f"{WHISPER_DIR}/build/bin/whisper-cli" | ||
| 19 | model_path = f"{WHISPER_DIR}/models/{WHISPER_MODEL}.bin" | ||
| 20 | |||
| 21 | cmd = [whisper_cli, '-m', model_path, input_file] | ||
| 22 | |||
| 23 | result = subprocess.run(cmd, capture_output=True, text=True) | ||
| 24 | if result.returncode != 0: | ||
| 25 | print(f"Error transcribing {input_file}: {result.stderr}") | ||
| 26 | return | ||
| 27 | with open(output_file, 'w', encoding='utf-8') as f: | ||
| 28 | f.write(result.stdout) | ||
| 29 | |||
| 30 | def main(): | ||
| 31 | inputs = sys.argv[1:] | ||
| 32 | if not inputs: | ||
| 33 | print("No input files given") | ||
| 34 | return | ||
| 35 | |||
| 36 | with tqdm(inputs) as pbar: | ||
| 37 | for file in pbar: | ||
| 38 | pbar.set_description(f"Transcribing {os.path.basename(file)}") | ||
| 39 | transcribe_file(file) | ||
| 40 | |||
| 41 | if __name__ == '__main__': | ||
| 42 | main() | ||
