Update app.py

app.py

@@ -74,7 +74,7 @@ def random_string(length=12):
     return ''.join(random.choices(string.ascii_letters + string.digits, k=length))
 
 def process_video(file_path, hard_mode=False):
-    """Processa vídeo removendo metadados (apenas com ffmpeg)"""
+    """Processa vídeo removendo metadados e mascarando vestígios do ffmpeg"""
     temp_fd, temp_out = tempfile.mkstemp(suffix=".mp4")
     os.close(temp_fd)
 
@@ -82,23 +82,46 @@ def process_video(file_path, hard_mode=False):
         shutil.copy(file_path, temp_out)
         return temp_out
 
-    # Pipeline HARD só com ffmpeg
+    # Randomizações técnicas
+    crf = str(random.randint(18, 26))  # qualidade variável
+    bitrate = f"{random.randint(96, 192)}k"
+    fps = f"{random.uniform(29.5, 30.5):.2f}"
+    brand = random.choice(["isom", "iso2", "mp42", "avc1", "dash", "iso3"])
+    compressor = random_string(random.randint(6, 12))
+    encoder_name = random_string(random.randint(6, 14))
+
+    # Metadados falsos
+    meta = {
+        "title": random_string(random.randint(8, 20)),
+        "comment": random_string(random.randint(8, 20)),
+        "description": random_string(random.randint(8, 20)),
+        "artist": random_string(random.randint(8, 20)),
+        "album": random_string(random.randint(8, 20)),
+        "genre": random_string(random.randint(5, 15)),
+        "publisher": random_string(random.randint(5, 15)),
+        "encoded_by": random_string(random.randint(5, 15)),
+        "location": random_string(random.randint(5, 15)),
+        "encoder": encoder_name
+    }
+
     cmd_ffmpeg = [
         "ffmpeg", "-y", "-i", file_path,
         "-map", "0:v", "-map", "0:a?",
         "-map_metadata", "-1",
-        "-c:v", "libx264", "-preset", "fast", "-crf", "23",
-        "-c:a", "aac", "-b:a", "128k",
+        "-c:v", "libx264", "-preset", "fast", "-crf", crf,
+        "-c:a", "aac", "-b:a", bitrate,
+        "-r", fps,
         "-movflags", "use_metadata_tags+faststart",
-        "-brand", random.choice(["mp42", "isom", "iso2", "avc1"]),
-        "-metadata", f"encoder={random_string(10)}",
-        "-metadata", f"title={random_string(12)}",
-        "-metadata", f"comment={random_string(12)}",
-        "-metadata", f"description={random_string(12)}",
-        "-metadata", f"artist={random_string(10)}",
-        "-metadata", f"album={random_string(10)}",
-        temp_out
+        "-brand", brand,
+        "-metadata", f"encoder={encoder_name}",
+        "-metadata", f"CompressorName={compressor}",
+        "-fflags", "+bitexact",
+        "-flags", "+bitexact",
     ]
+    for k, v in meta.items():
+        cmd_ffmpeg += ["-metadata", f"{k}={v}"]
+
+    cmd_ffmpeg.append(temp_out)
     subprocess.run(cmd_ffmpeg, check=True)
 
     return temp_out
@@ -126,7 +149,6 @@ if categoria:
 
     if uploaded_files:
         for uploaded_file in uploaded_files:
-            # Evita processar o mesmo arquivo em loop
             if st.session_state.last_upload == uploaded_file.name:
                 continue  
 
@@ -140,13 +162,11 @@ if categoria:
                 tmp.write(uploaded_file.read())
                 tmp_path = tmp.name
 
-            # Se for vídeo + hard_mode ativo → processa
             if is_video and hard_mode:
                 final_tmp = process_video(tmp_path, hard_mode=True)
             else:
                 final_tmp = tmp_path
 
-            # Renomeia com string aleatória se hard_mode
             if hard_mode and is_video:
                 new_name = random_string(16) + ".mp4"
             else:
@@ -155,7 +175,6 @@ if categoria:
             file_path = os.path.join(folder, new_name)
             shutil.move(final_tmp, file_path)
 
-            # Salvar expiração
             if auto_delete:
                 key = f"{categoria}|||{new_name}"
                 expirations[key] = time.time() + 24 * 60 * 60