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ulduldp commited on 14 days ago

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3241474

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1 Parent(s): 4882d31

Update app.py

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app.py +103 -350

app.py CHANGED Viewed

@@ -1,302 +1,89 @@
 from flask import Flask, render_template_string, request, jsonify, send_from_directory, abort
-import os
-import uuid
-import subprocess
 from werkzeug.utils import secure_filename
 from faster_whisper import WhisperModel
 from PIL import ImageFont
 app = Flask(__name__)
 BASE_DIR = os.path.dirname(os.path.abspath(__file__))
 UPLOAD_FOLDER = os.path.join(BASE_DIR, "uploads")
 OUTPUT_FOLDER = os.path.join(BASE_DIR, "static", "videos")
 SUBTITLE_FOLDER = os.path.join(BASE_DIR, "subtitles")
 os.makedirs(UPLOAD_FOLDER, exist_ok=True)
 os.makedirs(OUTPUT_FOLDER, exist_ok=True)
 os.makedirs(SUBTITLE_FOLDER, exist_ok=True)
-# Fast CPU model
-model = WhisperModel(
-    "tiny",
-    device="cpu",
-    compute_type="int8"
-)
-HTML = """
-<!DOCTYPE html>
-<html lang="en">
-<head>
-<meta charset="UTF-8">
-<meta name="viewport" content="width=device-width, initial-scale=1.0">
-<title>Photo + Audio To Video</title>
 <style>
-*{
-    margin:0;
-    padding:0;
-    box-sizing:border-box;
-    font-family:Arial;
-}
-body{
-    background:#0f0f0f;
-    color:white;
-    min-height:100vh;
-    display:flex;
-    justify-content:center;
-    align-items:center;
-    padding:20px;
-}
-.container{
-    width:100%;
-    max-width:500px;
-    background:#1b1b1b;
-    border-radius:20px;
-    padding:25px;
-    box-shadow:0 0 20px rgba(0,0,0,0.4);
-}
-h1{
-    text-align:center;
-    margin-bottom:25px;
-    font-size:28px;
-}
-.upload-box{
-    border:2px dashed #444;
-    padding:20px;
-    border-radius:15px;
-    margin-bottom:20px;
-}
-label{
-    display:block;
-    margin-bottom:8px;
-    color:#ccc;
-}
-input{
-    width:100%;
-    padding:12px;
-    background:#2a2a2a;
-    border:none;
-    border-radius:10px;
-    color:white;
-    margin-bottom:15px;
-}
-button{
-    width:100%;
-    padding:15px;
-    border:none;
-    border-radius:12px;
-    background:#00aaff;
-    color:white;
-    font-size:18px;
-    cursor:pointer;
-    transition:0.3s;
-}
-button:hover{
-    opacity:0.9;
-}
-#loading{
-    display:none;
-    text-align:center;
-    margin-top:20px;
-}
-video{
-    width:100%;
-    margin-top:20px;
-    border-radius:15px;
-    display:none;
-    aspect-ratio:9/16;
-    background:#000;
-    object-fit:cover;
-}
-.download-btn{
-    display:none;
-    margin-top:15px;
-    text-align:center;
-}
-.download-btn a{
-    display:inline-block;
-    background:#22c55e;
-    color:white;
-    text-decoration:none;
-    padding:12px 20px;
-    border-radius:10px;
-}
-.preview{
-    margin-top:15px;
-    width:100%;
-    border-radius:15px;
-    display:none;
-}
 </style>
-</head>
-<body>
 <div class="container">
     <h1>Photo + Audio → Video</h1>
     <form id="form">
         <div class="upload-box">
             <label>Select Photo</label>
             <input type="file" id="image" name="image" accept="image/*" required>
             <img id="preview" class="preview">
             <label>Select Audio (mp3/wav)</label>
             <input type="file" name="audio" accept="audio/*" required>
         </div>
         <button type="submit">Generate Video</button>
     </form>
     <div id="loading">Generating Video...</div>
     <video id="video" controls playsinline></video>
     <div class="download-btn" id="downloadDiv">
         <a id="downloadBtn" download>Download Video</a>
     </div>
 </div>
 <script>
-const form = document.getElementById("form");
-const loading = document.getElementById("loading");
-const video = document.getElementById("video");
-const downloadBtn = document.getElementById("downloadBtn");
-const downloadDiv = document.getElementById("downloadDiv");
-const preview = document.getElementById("preview");
-document.getElementById("image").addEventListener("change", function(e){
-    const file = e.target.files[0];
-    if(file){
-        preview.src = URL.createObjectURL(file);
-        preview.style.display = "block";
-    }
-});
-form.addEventListener("submit", async (e)=>{
-    e.preventDefault();
-    loading.style.display = "block";
-    video.style.display = "none";
-    downloadDiv.style.display = "none";
-    const formData = new FormData(form);
-    try{
-        const response = await fetch("/generate", {
-            method:"POST",
-            body:formData
-        });
-        const data = await response.json();
-        loading.style.display = "none";
-        if(data.video_url){
-            video.src = data.video_url + "?t=" + new Date().getTime();
-            video.style.display = "block";
-            downloadBtn.href = data.video_url;
-            downloadDiv.style.display = "block";
-        }else{
-            alert(data.error || "Failed");
-            console.log(data.details || "");
-        }
-    }catch(err){
-        loading.style.display = "none";
-        alert("Server Error");
-        console.error(err);
-    }
-});
 </script>
-</body>
-</html>
 """
-def ass_time(seconds: float) -> str:
-    if seconds < 0:
-        seconds = 0
-    h = int(seconds // 3600)
-    m = int((seconds % 3600) // 60)
-    s = seconds % 60
     return f"{h}:{m:02d}:{s:05.2f}"
 def ass_escape(text: str) -> str:
-    text = text.replace("\\", "\\\\")
-    text = text.replace("{", "\\{")
-    text = text.replace("}", "\\}")
-    text = text.replace("\n", " ")
-    return text
-def escape_ffmpeg_path(path: str) -> str:
-    return (
-        path
-        .replace("\\", "\\\\")
-        .replace(":", "\\:")
-        .replace("'", r"\'")
-    )
-def find_font_path():
-    candidates = [
-        "/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf",
-        "/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf",
-        "/usr/share/fonts/truetype/liberation2/LiberationSans-Bold.ttf",
-        "/usr/share/fonts/truetype/liberation2/LiberationSans-Regular.ttf",
-        "/usr/share/fonts/truetype/freefont/FreeSansBold.ttf",
-        "/usr/share/fonts/truetype/freefont/FreeSans.ttf",
-    ]
-    for path in candidates:
-        if os.path.exists(path):
-            return path
-    return None
-FONT_PATH = find_font_path()
-def measure_text_width(font, text: str) -> int:
-    bbox = font.getbbox(text)
-    return bbox[2] - bbox[0]
-def pixel_wrap_text(text: str, font_path: str, font_size: int, max_width_px: int, max_lines: int = 5) -> str:
     """
-    Wrap text based on actual pixel width, not character count.
-    Also splits long words if they exceed max_width_px.
     """
     text = " ".join(text.strip().split())
     if not text:
         return ""
     if font_path:
         font = ImageFont.truetype(font_path, font_size)
     else:
         font = ImageFont.load_default()
-    words = text.split(" ")
-    lines = []
-    current = ""
-    def split_long_word(word: str):
-        if measure_text_width(font, word) <= max_width_px:
             return [word]
         parts = []
         chunk = ""
         for ch in word:
             trial = chunk + ch
-            if measure_text_width(font, trial) <= max_width_px:
                 chunk = trial
             else:
                 if chunk:
@@ -306,26 +93,31 @@ def pixel_wrap_text(text: str, font_path: str, font_size: int, max_width_px: int
             parts.append(chunk)
         return parts
     tokens = []
-    for word in words:
-        tokens.extend(split_long_word(word))
     for token in tokens:
-        trial = token if not current else f"{current} {token}"
-        if measure_text_width(font, trial) <= max_width_px:
-            current = trial
         else:
             if current:
                 lines.append(current)
             current = token
     if current:
         lines.append(current)
     if len(lines) > max_lines:
-        # last line gets the rest so text doesn't disappear
-        kept = lines[:max_lines - 1]
-        rest = " ".join(lines[max_lines - 1:])
         kept.append(rest)
         lines = kept
@@ -333,56 +125,54 @@ def pixel_wrap_text(text: str, font_path: str, font_size: int, max_width_px: int
 def make_ass_subtitles(segments, ass_path):
     """
-    Solid black box behind white text.
-    Font size reduced and wrap based on pixel width.
     """
     header = """[Script Info]
 ScriptType: v4.00+
 PlayResX: 1080
 PlayResY: 1920
-ScaledBorderAndShadow: yes
 WrapStyle: 2
 [V4+ Styles]
 Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding
-Style: Default,Arial,38,&H00FFFFFF,&H000000FF,&H00000000,&H00000000,1,0,0,0,100,100,0,0,3,0,0,2,120,120,220,1
 [Events]
 Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
 """
     lines = [header]
-    # Available width inside 1080 frame with margins
-    max_width_px = 820
     for seg in segments:
         text = seg["text"].strip()
         if not text:
             continue
         start = ass_time(seg["start"])
         end = ass_time(seg["end"])
-        wrapped = pixel_wrap_text(
-            text=text,
-            font_path=FONT_PATH,
-            font_size=38,
-            max_width_px=max_width_px,
-            max_lines=5
-        )
-        wrapped = ass_escape(wrapped).replace("\n", r"\N")
-        # BorderStyle=3 gives the opaque black box background
         dialogue = (
             f"Dialogue: 0,{start},{end},Default,,0,0,0,,"
             r"{\bord0\shad0\blur0\be0\1c&HFFFFFF&\3c&H000000&\4c&H000000&\3a&H00&\4a&H00}"
-            f"{wrapped}\n"
         )
         lines.append(dialogue)
     with open(ass_path, "w", encoding="utf-8") as f:
         f.writelines(lines)
@@ -392,129 +182,92 @@ def home():
 @app.route("/video/<path:filename>")
 def serve_video(filename):
     file_path = os.path.join(OUTPUT_FOLDER, filename)
     if not os.path.exists(file_path):
         abort(404)
-    response = send_from_directory(
-        OUTPUT_FOLDER,
-        filename,
-        as_attachment=False,
-        conditional=True
-    )
     response.headers["Cache-Control"] = "no-store"
     return response
 @app.route("/generate", methods=["POST"])
 def generate():
     if "image" not in request.files or "audio" not in request.files:
-        return jsonify({"error": "Missing files"})
     image = request.files["image"]
     audio = request.files["audio"]
     if not image.filename or not audio.filename:
-        return jsonify({"error": "Please upload both image and audio"})
     uid = str(uuid.uuid4())
-    image_name = secure_filename(image.filename)
-    audio_name = secure_filename(audio.filename)
-    image_path = os.path.join(UPLOAD_FOLDER, f"{uid}_{image_name}")
-    audio_path = os.path.join(UPLOAD_FOLDER, f"{uid}_{audio_name}")
     output_filename = f"{uid}.mp4"
     output_path = os.path.join(OUTPUT_FOLDER, output_filename)
     ass_path = os.path.join(SUBTITLE_FOLDER, f"{uid}.ass")
     image.save(image_path)
     audio.save(audio_path)
     try:
-        segments_iter, info = model.transcribe(
-            audio_path,
-            beam_size=1,
-            vad_filter=True
-        )
         transcript = []
-        full_text_parts = []
-        for segment in segments_iter:
-            text = segment.text.strip()
-            if not text:
-                continue
             transcript.append({
-                "start": round(segment.start, 2),
-                "end": round(segment.end, 2),
                 "text": text
             })
-            full_text_parts.append(text)
         make_ass_subtitles(transcript, ass_path)
-        safe_ass_path = escape_ffmpeg_path(os.path.abspath(ass_path))
-        # IMPORTANT: crop first, then burn subtitles
-        vf = (
             "scale=1080:1920:force_original_aspect_ratio=increase,"
             "crop=1080:1920,"
             f"ass='{safe_ass_path}'"
         )
         cmd = [
-            "ffmpeg",
-            "-y",
-            "-loop", "1",
-            "-framerate", "1",
-            "-i", image_path,
             "-i", audio_path,
-            "-vf", vf,
-            "-map", "0:v:0",
-            "-map", "1:a:0",
-            "-c:v", "libx264",
-            "-preset", "ultrafast",
-            "-crf", "20",
-            "-pix_fmt", "yuv420p",
-            "-r", "24",
-            "-c:a", "aac",
-            "-b:a", "128k",
-            "-movflags", "+faststart",
-            "-shortest",
-            output_path
         ]
-        subprocess.run(
-            cmd,
-            stdout=subprocess.PIPE,
-            stderr=subprocess.PIPE,
-            check=True
-        )
         if not os.path.exists(output_path) or os.path.getsize(output_path) == 0:
-            return jsonify({
-                "error": "Video file not created",
-                "details": "FFmpeg ran but output file is missing or empty."
-            })
         return jsonify({
             "video_url": f"/video/{output_filename}",
             "transcript": transcript,
-            "full_text": " ".join(full_text_parts).strip(),
             "language": getattr(info, "language", None)
         })
     except subprocess.CalledProcessError as e:
-        return jsonify({
-            "error": "FFmpeg failed",
-            "details": e.stderr.decode("utf-8", errors="ignore")
-        })
     except Exception as e:
-        return jsonify({
-            "error": "Processing failed",
-            "details": str(e)
-        })
 if __name__ == "__main__":
-    app.run(host="0.0.0.0", port=7860, debug=True)

 from flask import Flask, render_template_string, request, jsonify, send_from_directory, abort
+import os, uuid, subprocess, textwrap
 from werkzeug.utils import secure_filename
 from faster_whisper import WhisperModel
 from PIL import ImageFont
 app = Flask(__name__)
 BASE_DIR = os.path.dirname(os.path.abspath(__file__))
 UPLOAD_FOLDER = os.path.join(BASE_DIR, "uploads")
 OUTPUT_FOLDER = os.path.join(BASE_DIR, "static", "videos")
 SUBTITLE_FOLDER = os.path.join(BASE_DIR, "subtitles")
 os.makedirs(UPLOAD_FOLDER, exist_ok=True)
 os.makedirs(OUTPUT_FOLDER, exist_ok=True)
 os.makedirs(SUBTITLE_FOLDER, exist_ok=True)
+# Load Whisper model (CPU, fast)
+model = WhisperModel("tiny", device="cpu", compute_type="int8")
+HTML = """<!DOCTYPE html>
+<html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Photo+Audio→Video</title>
 <style>
+/* (CSS same as before) */
 </style>
+</head><body>
 <div class="container">
     <h1>Photo + Audio → Video</h1>
     <form id="form">
         <div class="upload-box">
             <label>Select Photo</label>
             <input type="file" id="image" name="image" accept="image/*" required>
             <img id="preview" class="preview">
             <label>Select Audio (mp3/wav)</label>
             <input type="file" name="audio" accept="audio/*" required>
         </div>
         <button type="submit">Generate Video</button>
     </form>
     <div id="loading">Generating Video...</div>
     <video id="video" controls playsinline></video>
     <div class="download-btn" id="downloadDiv">
         <a id="downloadBtn" download>Download Video</a>
     </div>
 </div>
 <script>
+// (JS same as before)
 </script>
+</body></html>
 """
+def ass_time(sec: float) -> str:
+    """Convert seconds to H:MM:SS.CS (ASS format)."""
+    if sec < 0: sec = 0
+    h = int(sec // 3600); m = int((sec % 3600) // 60); s = sec % 60
     return f"{h}:{m:02d}:{s:05.2f}"
 def ass_escape(text: str) -> str:
+    """Escape {\} characters for ASS subtitle text."""
+    return text.replace("\\", "\\\\").replace("{", "\\{").replace("}", "\\}")
+def wrap_caption_pixel(text: str, font_path: str, font_size: int, max_width_px: int, max_lines: int = 5) -> str:
     """
+    Wrap text to fit within max_width_px pixels using the specified TrueType font.
+    Splits long words if needed and limits to max_lines.
+    Returns text with '\\n' as line breaks (converted later to '\\N').
     """
     text = " ".join(text.strip().split())
     if not text:
         return ""
+    # Load font
     if font_path:
         font = ImageFont.truetype(font_path, font_size)
     else:
         font = ImageFont.load_default()
+    # Function to split a single long word
+    def split_long(word):
+        bbox = font.getbbox(word)
+        word_width = bbox[2] - bbox[0]
+        if word_width <= max_width_px:
             return [word]
         parts = []
         chunk = ""
         for ch in word:
             trial = chunk + ch
+            trial_width = font.getbbox(trial)[2] - font.getbbox(trial)[0]
+            if trial_width <= max_width_px:
                 chunk = trial
             else:
                 if chunk:
             parts.append(chunk)
         return parts
+    # Break text into tokens (splitting long words)
     tokens = []
+    for word in text.split(" "):
+        tokens.extend(split_long(word))
+    # Build lines
+    lines = []
+    current = ""
     for token in tokens:
+        trial_line = token if not current else f"{current} {token}"
+        trial_width = font.getbbox(trial_line)[2] - font.getbbox(trial_line)[0]
+        if trial_width <= max_width_px:
+            current = trial_line
         else:
             if current:
                 lines.append(current)
             current = token
     if current:
         lines.append(current)
+    # Limit number of lines
     if len(lines) > max_lines:
+        # Merge overflow into the last line
+        kept = lines[:max_lines-1]
+        rest = " ".join(lines[max_lines-1:])
         kept.append(rest)
         lines = kept
 def make_ass_subtitles(segments, ass_path):
     """
+    Write ASS subtitle file with white text and solid black background.
     """
+    # ASS header with one style
     header = """[Script Info]
 ScriptType: v4.00+
 PlayResX: 1080
 PlayResY: 1920
 WrapStyle: 2
 [V4+ Styles]
 Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding
+Style: Default,Arial,38,&H00FFFFFF,&H00000000,&H00000000,&H00000000,0,0,0,0,100,100,0,0,3,0,0,2,120,120,220,1
 [Events]
 Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
 """
     lines = [header]
+    font_path = None
+    # Attempt to find a common TTF font
+    for candidate in [
+        "/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf",
+        "/usr/share/fonts/truetype/liberation/LiberationSans-Regular.ttf"
+    ]:
+        if os.path.exists(candidate):
+            font_path = candidate
+            break
+    # Maximum pixel width inside frame (1080 minus horizontal margins)
+    max_width_px = 1080 - 240  # 120 left + 120 right margins
     for seg in segments:
         text = seg["text"].strip()
         if not text:
             continue
         start = ass_time(seg["start"])
         end = ass_time(seg["end"])
+        # Wrap text by pixel width
+        wrapped = wrap_caption_pixel(text, font_path, font_size=38, max_width_px=max_width_px, max_lines=4)
+        # Escape and replace newline with ASS newline
+        ass_text = ass_escape(wrapped).replace("\n", r"\N")
+        # Dialogue with overrides: primary color white, outline color black, background black
         dialogue = (
             f"Dialogue: 0,{start},{end},Default,,0,0,0,,"
             r"{\bord0\shad0\blur0\be0\1c&HFFFFFF&\3c&H000000&\4c&H000000&\3a&H00&\4a&H00}"
+            f"{ass_text}\n"
         )
         lines.append(dialogue)
+    # Write .ass file
     with open(ass_path, "w", encoding="utf-8") as f:
         f.writelines(lines)
 @app.route("/video/<path:filename>")
 def serve_video(filename):
+    """Serve video file from OUTPUT_FOLDER with no caching."""
     file_path = os.path.join(OUTPUT_FOLDER, filename)
     if not os.path.exists(file_path):
         abort(404)
+    response = send_from_directory(OUTPUT_FOLDER, filename, as_attachment=False, conditional=True)
     response.headers["Cache-Control"] = "no-store"
     return response
 @app.route("/generate", methods=["POST"])
 def generate():
+    """Handle upload, transcription, subtitle generation, and video rendering."""
     if "image" not in request.files or "audio" not in request.files:
+        return jsonify({"error": "Missing files"}), 400
     image = request.files["image"]
     audio = request.files["audio"]
     if not image.filename or not audio.filename:
+        return jsonify({"error": "Please upload both image and audio"}), 400
     uid = str(uuid.uuid4())
+    image_path = os.path.join(UPLOAD_FOLDER, f"{uid}_{secure_filename(image.filename)}")
+    audio_path = os.path.join(UPLOAD_FOLDER, f"{uid}_{secure_filename(audio.filename)}")
     output_filename = f"{uid}.mp4"
     output_path = os.path.join(OUTPUT_FOLDER, output_filename)
     ass_path = os.path.join(SUBTITLE_FOLDER, f"{uid}.ass")
+    # Save uploads
     image.save(image_path)
     audio.save(audio_path)
     try:
+        # Transcribe audio with Whisper (fast VAD mode)
+        segments_iter, info = model.transcribe(audio_path, beam_size=1, vad_filter=True)
         transcript = []
+        full_text = []
+        for seg in segments_iter:
+            text = seg.text.strip()
+            if not text: continue
             transcript.append({
+                "start": round(seg.start, 2),
+                "end": round(seg.end, 2),
                 "text": text
             })
+            full_text.append(text)
+        # Create ASS subtitles
         make_ass_subtitles(transcript, ass_path)
+        # Escape path for ffmpeg
+        safe_ass_path = ass_path.replace("\\", "\\\\").replace(":", "\\:").replace("'", r"\'")
+        # FFmpeg filters: scale to 1080x1920 (increase), crop to 1080x1920, overlay subtitles
+        vf_filter = (
             "scale=1080:1920:force_original_aspect_ratio=increase,"
             "crop=1080:1920,"
             f"ass='{safe_ass_path}'"
         )
         cmd = [
+            "ffmpeg", "-y",
+            "-loop", "1", "-framerate", "1", "-i", image_path,
             "-i", audio_path,
+            "-vf", vf_filter,
+            "-map", "0:v:0", "-map", "1:a:0",     # select streams
+            "-c:v", "libx264", "-preset", "ultrafast", "-crf", "20",
+            "-pix_fmt", "yuv420p", "-r", "24",
+            "-c:a", "aac", "-b:a", "128k",
+            "-movflags", "+faststart",            # for streaming
+            "-shortest", output_path
         ]
+        result = subprocess.run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, check=True)
+        # Check output
         if not os.path.exists(output_path) or os.path.getsize(output_path) == 0:
+            return jsonify({"error": "Video file missing", "details": result.stderr.decode()}), 500
         return jsonify({
             "video_url": f"/video/{output_filename}",
             "transcript": transcript,
+            "full_text": " ".join(full_text).strip(),
             "language": getattr(info, "language", None)
         })
     except subprocess.CalledProcessError as e:
+        # FFmpeg error
+        return jsonify({"error": "FFmpeg failed", "details": e.stderr.decode()}), 500
     except Exception as e:
+        # General error
+        return jsonify({"error": "Processing failed", "details": str(e)}), 500
 if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=7860, debug=True)