一、开篇碎碎念
最近在整理旅行视频时，发现需要把长视频按场景分割成小片段。试了几款工具都不够顺手，要么操作复杂，要么界面丑陋。作为技术人，当然要自己造轮子！
本文将带你用PyQt6打造一款支持拖拽操作、三种分割模式、高颜值界面的视频分割神器。最重要的是——完整开源！文末提供源码下载~
（效果预览图）
二、功能全景图
2.1 核心功能清单
| 功能模块 | 技术实现 | 亮点 |
|---|---|---|
| 拖拽文件支持 | Qt6 DnD API | 拖拽即识别，边框动态反馈 |
| 三种分割模式 | FFmpeg子进程 | 按秒/按段/区间三种策略 |
| 实时进度展示 | QProgressBar | 平滑动画+百分比计算 |
| 智能时长解析 | FFprobe调用 | 自动识别视频元数据 |
| 跨平台支持 | Python封装 | Win/macOS/Linux全兼容 |
2.2 技术选型对比
三、UI设计详解
3.1 色彩方案
采用蓝绿渐变科技风配色：
|
1 2 3 4 5 6 |
COLOR_SCHEME = { 'primary': '#5D9CEC', # 主按钮蓝 'success': '#4CAF50', # 成功绿 'danger': '#F44336', # 警告红 'background': '#F0F7FA' # 背景浅蓝 } |
3.2 关键界面组件
拖拽文件区：虚线边框+悬浮高亮
|
1 2 3 4 5 6 |
QLabel { border: 2px dashed #aaa; border-radius: 5px; background: rgba(255,255,255,0.7); } QLabel:hover { border-color: #5D9CEC; } |
动态进度条：
|
1 2 3 4 5 6 7 |
self.progress.setStyleSheet(""" QProgressBar::chunk { background: qlineargradient( x1:0, y1:0, x2:1, y2:0, stop:0 #4CAF50, stop:1 #8BC34A); } """) |
四、手把手教学：从安装到使用
4.1 环境准备
|
1 2 3 4 |
# 必备依赖 pip install PyQt6 moviepy # FFmpeg安装（Windows示例） choco install ffmpeg |
4.2 视频分割处理流程
五、核心代码解析
5.1 拖拽处理三件套
|
1 2 3 4 5 6 7 8 9 |
def dragEnterEvent(self, event): """文件拖入时触发""" if event.mimeData().hasUrls(): event.acceptProposedAction()
def dropEvent(self, event): """文件放下时处理""" file_path = event.mimeData().urls()[0].toLocalFile() self.process_video(file_path) |
5.2 FFmpeg多线程调用
|
1 2 3 4 5 6 7 8 |
Thread(target=lambda: subprocess.run([ 'ffmpeg', '-ss', start_time, '-i', input_path, '-t', duration, '-c', 'copy', output_path ], check=True) ).start() |
5.3 智能区间计算
|
1 2 3 4 5 6 |
def calculate_intervals(self): """自动计算合理分段""" duration = self.get_duration() if mode == "seconds": return [(i*interval, (i+1)*interval) for i in range(math.ceil(duration/interval))] |
六、源码下载
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 |
import os import math import subprocess import json import re from threading import Thread from PyQt6.QtWidgets import (QApplication, QMainWindow, QWidget, QVBoxLayout, QHBoxLayout, QLabel, QPushButton, QLineEdit, QRadioButton, QButtonGroup, QProgressBar, QListWidget, QFileDialog, QMessageBox, QDialog, QFrame, QListWidgetItem) from PyQt6.QtCore import Qt, QSize, QMimeData, QUrl from PyQt6.QtGui import QIcon, QFont, QColor, QDragEnterEvent, QDropEvent
class VideoProcessor: def __init__(self): self.source = "" self.running = True
def set_source(self, path): """设置视频源文件""" if not os.path.exists(path): raise FileNotFoundError("文件不存在") self.source = path
def start(self, mode, param, progress_callback, status_callback): """处理入口""" duration = self.get_duration()
if mode == "seconds": self.split_by_seconds(param, duration, progress_callback, status_callback) elif mode == "segments": self.split_by_segments(param, duration, progress_callback, status_callback) elif mode == "intervals": self.split_by_intervals(param, duration, progress_callback, status_callback) else: raise ValueError(f"不支持的分割模式: {mode}")
def split_by_seconds(self, interval, duration, progress_callback, status_callback): """秒级分割逻辑""" full_segments = int(duration // interval) remaining = duration % interval
actual_segments = full_segments + (1 if remaining >= 1 else 0) output_dir = self.create_output_dir("秒分割")
base_name, ext = os.path.splitext(os.path.basename(self.source)) for i in range(actual_segments): if not self.running: break start = i * interval end = (i + 1) * interval if i < actual_segments - 1 else duration
output_name = f"{base_name}_副本_{i + 1}{ext}" subprocess.run([ 'ffmpeg', '-y', '-ss', str(start), '-i', self.source, '-t', str(end - start), '-c', 'copy', os.path.join(output_dir, output_name) ], check=True) progress_callback((i + 1) / actual_segments * 100) status_callback(f"生成分段 {i + 1}/{actual_segments}")
def split_by_segments(self, count, duration, progress_callback, status_callback): """分段模式处理""" interval = duration / count output_dir = self.create_output_dir("段分割")
base_name, ext = os.path.splitext(os.path.basename(self.source)) for i in range(count): if not self.running: break start = i * interval end = duration if i == count - 1 else (i + 1) * interval
output_name = f"{base_name}_副本_{i + 1}{ext}" subprocess.run([ 'ffmpeg', '-y', '-ss', str(start), '-i', self.source, '-t', str(end - start), '-c', 'copy', os.path.join(output_dir, output_name) ], check=True) progress_callback((i + 1) / count * 100) status_callback(f"处理进度 {i + 1}/{count}")
def split_by_intervals(self, intervals, duration, progress_callback, status_callback): """区间提取逻辑""" valid_intervals = [] for interval in intervals: start, end = interval if 0 <= start < end <= duration and end - start >= 0.5: valid_intervals.append((start, end))
if not valid_intervals: raise ValueError("没有有效的提取区间")
output_dir = self.create_output_dir("区间提取")
base_name, ext = os.path.splitext(os.path.basename(self.source)) total = len(valid_intervals) for i, (start, end) in enumerate(valid_intervals): if not self.running: break
start_hour, start_minute, start_second = self.seconds_to_hms(start) end_hour, end_minute, end_second = self.seconds_to_hms(end) output_name = f"{base_name}_副本_{i + 1}_{start_hour:02d}{start_minute:02d}{start_second:02d}-{end_hour:02d}{end_minute:02d}{end_second:02d}{ext}" subprocess.run([ 'ffmpeg', '-y', '-ss', str(start), '-i', self.source, '-t', str(end - start), '-c', 'copy', os.path.join(output_dir, output_name) ], check=True)
progress_callback((i + 1) / total * 100) status_callback(f"提取区间 {i + 1}/{total}: {start_hour:02d}:{start_minute:02d}:{start_second:02d}-{end_hour:02d}:{end_minute:02d}:{end_second:02d}")
return output_dir
def get_duration(self): """获取视频时长""" try: cmd = [ 'ffprobe', '-v', 'error', '-show_entries', 'format=duration', '-of', 'json', self.source ] result = subprocess.run(cmd, capture_output=True, text=True, check=True) data = json.loads(result.stdout) duration = float(data['format']['duration']) return duration except subprocess.CalledProcessError as e: raise RuntimeError(f"读取时长失败: {e.stderr}") except (json.JSONDecodeError, KeyError, ValueError) as e: raise RuntimeError(f"解析视频信息失败: {str(e)}") except Exception as e: raise RuntimeError(f"读取时长失败: {str(e)}")
def create_output_dir(self, prefix): """创建输出目录""" output_dir = os.path.join(os.path.dirname(self.source), f"{prefix}_输出") os.makedirs(output_dir, exist_ok=True) return output_dir
def seconds_to_hms(self, seconds): """将秒转换为小时、分钟、秒""" hours = int(seconds // 3600) minutes = int((seconds % 3600) // 60) secs = int(seconds % 60) return hours, minutes, secs
def hms_to_seconds(self, hours, minutes, seconds): """将小时、分钟、秒转换为秒""" return hours * 3600 + minutes * 60 + seconds
class AddIntervalDialog(QDialog): def __init__(self, parent, max_duration): super().__init__(parent) self.setWindowTitle("添加区间") self.setWindowModality(Qt.WindowModality.ApplicationModal) self.setFixedSize(350, 200)
self.max_duration = max_duration self.result = None
self.init_ui()
def init_ui(self): layout = QVBoxLayout() layout.setContentsMargins(15, 15, 15, 15)
info_label = QLabel(f"请输入时间区间 (范围: 0-{self.format_time(self.max_duration)})") info_label.setStyleSheet("color: #555;") layout.addWidget(info_label)
# 开始时间输入 start_frame = QWidget() start_layout = QHBoxLayout(start_frame) start_layout.setContentsMargins(0, 0, 0, 0)
start_layout.addWidget(QLabel("开始时间:")) self.start_hour = QLineEdit() self.start_hour.setFixedWidth(30) self.start_hour.setStyleSheet("background: #f8f8f8;") start_layout.addWidget(self.start_hour) start_layout.addWidget(QLabel("时"))
self.start_minute = QLineEdit() self.start_minute.setFixedWidth(30) self.start_minute.setStyleSheet("background: #f8f8f8;") start_layout.addWidget(self.start_minute) start_layout.addWidget(QLabel("分"))
self.start_second = QLineEdit() self.start_second.setFixedWidth(30) self.start_second.setStyleSheet("background: #f8f8f8;") start_layout.addWidget(self.start_second) start_layout.addWidget(QLabel("秒"))
start_layout.addStretch() layout.addWidget(start_frame)
# 结束时间输入 end_frame = QWidget() end_layout = QHBoxLayout(end_frame) end_layout.setContentsMargins(0, 0, 0, 0)
end_layout.addWidget(QLabel("结束时间:")) self.end_hour = QLineEdit() self.end_hour.setFixedWidth(30) self.end_hour.setStyleSheet("background: #f8f8f8;") end_layout.addWidget(self.end_hour) end_layout.addWidget(QLabel("时"))
self.end_minute = QLineEdit() self.end_minute.setFixedWidth(30) self.end_minute.setStyleSheet("background: #f8f8f8;") end_layout.addWidget(self.end_minute) end_layout.addWidget(QLabel("分"))
self.end_second = QLineEdit() self.end_second.setFixedWidth(30) self.end_second.setStyleSheet("background: #f8f8f8;") end_layout.addWidget(self.end_second) end_layout.addWidget(QLabel("秒"))
end_layout.addStretch() layout.addWidget(end_frame)
# 按钮区 btn_frame = QWidget() btn_layout = QHBoxLayout(btn_frame) btn_layout.setContentsMargins(0, 0, 0, 0)
self.ok_btn = QPushButton("确定") self.ok_btn.setStyleSheet(""" QPushButton { background: #4CAF50; color: white; border: none; padding: 5px 15px; border-radius: 4px; } QPushButton:hover { background: #45a049; } """) self.ok_btn.clicked.connect(self.on_ok) btn_layout.addStretch() btn_layout.addWidget(self.ok_btn)
cancel_btn = QPushButton("取消") cancel_btn.setStyleSheet(""" QPushButton { background: #f44336; color: white; border: none; padding: 5px 15px; border-radius: 4px; } QPushButton:hover { background: #d32f2f; } """) cancel_btn.clicked.connect(self.reject) btn_layout.addWidget(cancel_btn)
layout.addWidget(btn_frame)
self.setLayout(layout)
def on_ok(self): try: start_h = int(self.start_hour.text() or 0) start_m = int(self.start_minute.text() or 0) start_s = int(self.start_second.text() or 0)
end_h = int(self.end_hour.text() or 0) end_m = int(self.end_minute.text() or 0) end_s = int(self.end_second.text() or 0)
start_seconds = start_h * 3600 + start_m * 60 + start_s end_seconds = end_h * 3600 + end_m * 60 + end_s
if start_seconds < 0 or start_seconds >= self.max_duration: QMessageBox.warning(self, "错误", f"开始时间必须在0到{self.format_time(self.max_duration)}之间") return
if end_seconds <= start_seconds or end_seconds > self.max_duration: QMessageBox.warning(self, "错误", f"结束时间必须大于开始时间且不超过{self.format_time(self.max_duration)}") return
if end_seconds - start_seconds < 0.5: QMessageBox.warning(self, "错误", "区间长度太短（最少0.5秒）") return
self.result = (start_seconds, end_seconds) self.accept()
except ValueError: QMessageBox.warning(self, "错误", "请输入有效的数字")
def format_time(self, seconds): """将秒转换为 hh:mm:ss 格式""" hours = int(seconds // 3600) minutes = int((seconds % 3600) // 60) secs = int(seconds % 60) return f"{hours:02d}:{minutes:02d}:{secs:02d}"
class VideoSplitterUI(QMainWindow): def __init__(self): super().__init__() self.setWindowTitle("智能视频分割器") self.setMinimumSize(650, 600)
self.processor = VideoProcessor() self.running = False self.intervals = []
self.init_ui() self.center_window()
# 启用拖放功能 self.setAcceptDrops(True)
def center_window(self): """使窗口居中显示""" screen = QApplication.primaryScreen().geometry() size = self.geometry() self.move((screen.width() - size.width()) // 2, (screen.height() - size.height()) // 2)
def init_ui(self): """初始化UI界面""" main_widget = QWidget() self.setCentralWidget(main_widget)
# 主布局 layout = QVBoxLayout() layout.setContentsMargins(25, 25, 25, 25) layout.setSpacing(15)
# 文件选择区 file_frame = QWidget() file_frame.setStyleSheet(""" QWidget { background: #f0f7fa; border-radius: 8px; padding: 10px; } """) file_layout = QHBoxLayout(file_frame) file_layout.setContentsMargins(10, 5, 10, 5)
self.select_btn = QPushButton("选择文件") self.select_btn.setFixedWidth(100) self.select_btn.setStyleSheet(""" QPushButton { background: #5D9CEC; color: white; border: none; padding: 6px; border-radius: 5px; font-weight: bold; } QPushButton:hover { background: #4A89DC; } """) self.select_btn.clicked.connect(self.select_file) file_layout.addWidget(self.select_btn)
self.file_label = QLabel("拖放视频文件到这里或点击按钮选择") self.file_label.setStyleSheet(""" QLabel { color: #555; font-size: 13px; padding: 5px; border: 2px dashed #aaa; border-radius: 5px; background: rgba(255,255,255,0.7); } """) self.file_label.setAlignment(Qt.AlignmentFlag.AlignCenter) file_layout.addWidget(self.file_label, 1)
layout.addWidget(file_frame)
# 视频信息区 self.info_label = QLabel("视频时长: 未知") self.info_label.setStyleSheet(""" QLabel { color: #4A708B; font-size: 13px; font-weight: bold; padding: 5px; background: #E0F2F7; border-radius: 5px; } """) self.info_label.setAlignment(Qt.AlignmentFlag.AlignCenter) layout.addWidget(self.info_label)
# 分割线 line = QFrame() line.setFrameShape(QFrame.Shape.HLine) line.setFrameShadow(QFrame.Shadow.Sunken) line.setStyleSheet("color: #d5e6eb;") layout.addWidget(line)
# 模式选择区 mode_frame = QWidget() mode_frame.setStyleSheet(""" QWidget { background: #f5f9fa; border-radius: 8px; padding: 10px; } """) mode_layout = QHBoxLayout(mode_frame) mode_layout.setContentsMargins(15, 5, 15, 5)
self.mode_group = QButtonGroup()
self.seconds_radio = QRadioButton("按秒分割") self.seconds_radio.setChecked(True) self.seconds_radio.setStyleSheet(""" QRadioButton { color: #555; font-size: 13px; } QRadioButton::indicator { width: 16px; height: 16px; } """) self.mode_group.addButton(self.seconds_radio, 0) mode_layout.addWidget(self.seconds_radio)
self.segments_radio = QRadioButton("按段分割") self.segments_radio.setStyleSheet(""" QRadioButton { color: #555; font-size: 13px; } QRadioButton::indicator { width: 16px; height: 16px; } """) self.mode_group.addButton(self.segments_radio, 1) mode_layout.addWidget(self.segments_radio)
self.intervals_radio = QRadioButton("区间提取") self.intervals_radio.setStyleSheet(""" QRadioButton { color: #555; font-size: 13px; } QRadioButton::indicator { width: 16px; height: 16px; } """) self.mode_group.addButton(self.intervals_radio, 2) mode_layout.addWidget(self.intervals_radio)
mode_layout.addStretch() layout.addWidget(mode_frame)
# 参数输入区 self.param_frame = QWidget() self.param_frame.setStyleSheet(""" QWidget { background: #f5f9fa; border-radius: 8px; padding: 10px; } """) param_layout = QHBoxLayout(self.param_frame) param_layout.setContentsMargins(15, 5, 15, 5)
self.param_label = QLabel("间隔秒数:") self.param_label.setStyleSheet("color: #555;") param_layout.addWidget(self.param_label)
self.param_entry = QLineEdit() self.param_entry.setFixedWidth(80) self.param_entry.setStyleSheet(""" QLineEdit { background: white; border: 1px solid #ccc; border-radius: 4px; padding: 3px; } """) self.param_entry.textChanged.connect(self.auto_calculate) param_layout.addWidget(self.param_entry)
self.result_label = QLabel("预计段数: 0") self.result_label.setStyleSheet("color: #666; font-weight: bold;") param_layout.addWidget(self.result_label) param_layout.addStretch()
layout.addWidget(self.param_frame)
# 区间提取区 self.intervals_frame = QWidget() self.intervals_frame.setStyleSheet(""" QWidget { background: #f5f9fa; border-radius: 8px; padding: 10px; } """) intervals_layout = QVBoxLayout(self.intervals_frame) intervals_layout.setContentsMargins(10, 10, 10, 10)
intervals_title = QLabel("区间提取") intervals_title.setStyleSheet(""" QLabel { font-weight: bold; color: #4A708B; font-size: 14px; } """) intervals_layout.addWidget(intervals_title)
# 区间列表 self.intervals_list = QListWidget() self.intervals_list.setMinimumHeight(120) self.intervals_list.setStyleSheet(""" QListWidget { background: white; border: 1px solid #ccc; border-radius: 5px; padding: 5px; font-size: 12px; } QListWidget::item { padding: 5px; border-bottom: 1px solid #eee; } QListWidget::item:selected { background: #D6EAF8; color: #333; } """) intervals_layout.addWidget(self.intervals_list)
# 区间控制按钮 intervals_btn_frame = QWidget() intervals_btn_layout = QHBoxLayout(intervals_btn_frame) intervals_btn_layout.setContentsMargins(0, 0, 0, 0)
self.add_interval_btn = QPushButton("添加区间") self.add_interval_btn.setStyleSheet(""" QPushButton { background: #5D9CEC; color: white; border: none; padding: 5px 12px; border-radius: 4px; } QPushButton:hover { background: #4A89DC; } """) self.add_interval_btn.clicked.connect(self.add_interval) intervals_btn_layout.addWidget(self.add_interval_btn)
self.remove_interval_btn = QPushButton("删除选中") self.remove_interval_btn.setStyleSheet(""" QPushButton { background: #F78181; color: white; border: none; padding: 5px 12px; border-radius: 4px; } QPushButton:hover { background: #E74C3C; } """) self.remove_interval_btn.clicked.connect(self.remove_interval) intervals_btn_layout.addWidget(self.remove_interval_btn)
self.clear_interval_btn = QPushButton("清空列表") self.clear_interval_btn.setStyleSheet(""" QPushButton { background: #A4A4A4; color: white; border: none; padding: 5px 12px; border-radius: 4px; } QPushButton:hover { background: #848484; } """) self.clear_interval_btn.clicked.connect(self.clear_intervals) intervals_btn_layout.addWidget(self.clear_interval_btn)
intervals_btn_layout.addStretch() intervals_layout.addWidget(intervals_btn_frame)
layout.addWidget(self.intervals_frame) self.intervals_frame.hide()
# 控制区 ctrl_frame = QWidget() ctrl_frame.setStyleSheet(""" QWidget { background: #f0f7fa; border-radius: 8px; padding: 10px; } """) ctrl_layout = QHBoxLayout(ctrl_frame) ctrl_layout.setContentsMargins(10, 5, 10, 5)
self.start_btn = QPushButton("开始分割") self.start_btn.setFixedWidth(120) self.start_btn.setStyleSheet(""" QPushButton { background: #4CAF50; color: white; border: none; padding: 8px; border-radius: 5px; font-weight: bold; font-size: 14px; } QPushButton:hover { background: #45a049; } """) self.start_btn.clicked.connect(self.toggle_process) ctrl_layout.addWidget(self.start_btn)
self.open_output_btn = QPushButton("打开输出目录") self.open_output_btn.setStyleSheet(""" QPushButton { background: #5D9CEC; color: white; border: none; padding: 6px 12px; border-radius: 5px; } QPushButton:hover { background: #4A89DC; } """) self.open_output_btn.clicked.connect(self.open_output) ctrl_layout.addWidget(self.open_output_btn)
ctrl_layout.addStretch() layout.addWidget(ctrl_frame)
# 进度条 self.progress = QProgressBar() self.progress.setRange(0, 100) self.progress.setTextVisible(False) self.progress.setStyleSheet(""" QProgressBar { border: 1px solid #ccc; border-radius: 5px; text-align: center; background: #f5f5f5; height: 15px; } QProgressBar::chunk { background: #4CAF50; border-radius: 4px; } """) layout.addWidget(self.progress)
# 状态栏 self.status_label = QLabel("就绪") self.status_label.setStyleSheet(""" QLabel { color: #666; font-size: 12px; padding: 5px; background: #f5f5f5; border-radius: 5px; } """) layout.addWidget(self.status_label)
# 连接信号 self.mode_group.buttonClicked.connect(self.on_mode_changed)
main_widget.setLayout(layout)
def dragEnterEvent(self, event: QDragEnterEvent): """拖拽进入事件""" if event.mimeData().hasUrls(): urls = event.mimeData().urls() if len(urls) == 1 and urls[0].isLocalFile(): file_path = urls[0].toLocalFile() if re.search(r'\.(mp4|avi|mkv|mov|flv|wmv)$', file_path, re.I): event.acceptProposedAction() self.file_label.setStyleSheet(""" QLabel { color: #555; font-size: 13px; padding: 5px; border: 2px dashed #5D9CEC; border-radius: 5px; background: rgba(93, 156, 236, 0.1); } """) return
event.ignore()
def dragLeaveEvent(self, event): """拖拽离开事件""" self.file_label.setStyleSheet(""" QLabel { color: #555; font-size: 13px; padding: 5px; border: 2px dashed #aaa; border-radius: 5px; background: rgba(255,255,255,0.7); } """)
def dropEvent(self, event: QDropEvent): """拖放事件""" self.file_label.setStyleSheet(""" QLabel { color: #555; font-size: 13px; padding: 5px; border: 2px dashed #aaa; border-radius: 5px; background: rgba(255,255,255,0.7); } """)
urls = event.mimeData().urls() if urls and urls[0].isLocalFile(): file_path = urls[0].toLocalFile() if re.search(r'\.(mp4|avi|mkv|mov|flv|wmv)$', file_path, re.I): try: self.processor.set_source(file_path) self.file_label.setText(os.path.basename(file_path))
duration = self.processor.get_duration() mins, secs = divmod(duration, 60) hours, mins = divmod(mins, 60) time_str = f"{int(hours)}:{int(mins):02d}:{secs:.2f}" if hours else f"{int(mins)}:{secs:.2f}" self.info_label.setText(f"视频时长: {time_str} ({duration:.2f}秒)")
self.auto_calculate() except Exception as e: QMessageBox.critical(self, "错误", str(e)) else: QMessageBox.warning(self, "错误", "请拖入有效的视频文件 (MP4, AVI, MKV, MOV, FLV, WMV)")
def select_file(self): """选择视频文件""" path, _ = QFileDialog.getOpenFileName( self, "选择视频文件", "", "视频文件 (*.mp4 *.avi *.mkv *.mov *.flv *.wmv)" )
if path: try: self.processor.set_source(path) self.file_label.setText(os.path.basename(path))
duration = self.processor.get_duration() mins, secs = divmod(duration, 60) hours, mins = divmod(mins, 60) time_str = f"{int(hours)}:{int(mins):02d}:{secs:.2f}" if hours else f"{int(mins)}:{secs:.2f}" self.info_label.setText(f"视频时长: {time_str} ({duration:.2f}秒)")
self.auto_calculate() except Exception as e: QMessageBox.critical(self, "错误", str(e))
def on_mode_changed(self, button): """模式变化时更新UI""" if button == self.seconds_radio: self.param_label.setText("间隔秒数:") self.param_frame.show() self.intervals_frame.hide() elif button == self.segments_radio: self.param_label.setText("分割为段数:") self.param_frame.show() self.intervals_frame.hide() else: self.param_frame.hide() self.intervals_frame.show()
self.auto_calculate()
def auto_calculate(self): """自动计算分割参数预览""" try: if not self.processor.source: self.result_label.setText("请先选择文件") return
if self.seconds_radio.isChecked(): if not self.param_entry.text().strip(): self.result_label.setText("请输入秒数") return
param = float(self.param_entry.text()) if param <= 0: self.result_label.setText("请输入大于0的值") return
duration = self.processor.get_duration() segments = math.ceil(duration / param) self.result_label.setText(f"预计分成: {segments}段")
elif self.segments_radio.isChecked(): if not self.param_entry.text().strip(): self.result_label.setText("请输入段数") return
param = float(self.param_entry.text()) if param <= 0: self.result_label.setText("请输入大于0的值") return
duration = self.processor.get_duration() seconds = duration / param self.result_label.setText(f"每段约: {seconds:.1f}秒")
else: # 区间模式 count = len(self.intervals) if count == 0: self.result_label.setText("未设置区间") else: total_duration = sum(end - start for start, end in self.intervals) self.result_label.setText(f"将提取: {count}个区间 (共{total_duration:.1f}秒)")
except ValueError: self.result_label.setText("请输入有效数字") except Exception as e: self.result_label.setText(f"计算错误: {str(e)[:15]}")
def add_interval(self): """添加时间区间""" if not self.processor.source: QMessageBox.warning(self, "错误", "请先选择视频文件") return
try: duration = self.processor.get_duration() dialog = AddIntervalDialog(self, duration)
if dialog.exec() == QDialog.DialogCode.Accepted: self.intervals.append(dialog.result) self.update_intervals_list() self.auto_calculate()
except Exception as e: QMessageBox.critical(self, "错误", str(e))
def remove_interval(self): """删除选中的区间""" selected = self.intervals_list.currentRow() if selected >= 0 and selected < len(self.intervals): del self.intervals[selected] self.update_intervals_list() self.auto_calculate()
def clear_intervals(self): """清空区间列表""" self.intervals = [] self.update_intervals_list() self.auto_calculate()
def update_intervals_list(self): """更新区间列表显示""" self.intervals_list.clear() for i, (start, end) in enumerate(self.intervals): start_h, start_m, start_s = self.processor.seconds_to_hms(start) end_h, end_m, end_s = self.processor.seconds_to_hms(end) duration = end - start item = QListWidgetItem( f"{i + 1}. {start_h:02d}:{start_m:02d}:{start_s:02d} - " f"{end_h:02d}:{end_m:02d}:{end_s:02d} (时长: {duration:.2f}s)" ) self.intervals_list.addItem(item)
def toggle_process(self): """处理控制开关""" if not self.running: if self.validate_params(): self.running = True self.start_btn.setText("停止") self.start_btn.setStyleSheet(""" QPushButton { background: #f44336; color: white; border: none; padding: 8px; border-radius: 5px; font-weight: bold; font-size: 14px; } QPushButton:hover { background: #d32f2f; } """) Thread(target=self.execute_processing).start() else: self.running = False self.processor.running = False self.update_status("操作中止", "#f44336")
def validate_params(self): """验证参数输入有效性""" if not self.processor.source: QMessageBox.warning(self, "错误", "请先选择视频文件") return False
if self.seconds_radio.isChecked() or self.segments_radio.isChecked(): try: param = float(self.param_entry.text()) if param <= 0: QMessageBox.warning(self, "错误", "请输入大于0的数值") return False except ValueError: QMessageBox.warning(self, "错误", "请输入有效的数字") return False else: # 区间模式 if not self.intervals: QMessageBox.warning(self, "错误", "请添加至少一个提取区间") return False
return True
def execute_processing(self): """调用核心处理""" try: if self.seconds_radio.isChecked(): mode = "seconds" param = float(self.param_entry.text()) elif self.segments_radio.isChecked(): mode = "segments" param = int(float(self.param_entry.text())) else: mode = "intervals" param = self.intervals
params = { 'mode': mode, 'param': param, 'progress_callback': self.update_progress, 'status_callback': self.update_status }
self.processor.running = True self.processor.start(**params) self.update_status("完成", "#4CAF50")
except Exception as e: QMessageBox.critical(self, "错误", str(e)) finally: self.running = False self.start_btn.setText("开始分割") self.start_btn.setStyleSheet(""" QPushButton { background: #4CAF50; color: white; border: none; padding: 8px; border-radius: 5px; font-weight: bold; font-size: 14px; } QPushButton:hover { background: #45a049; } """)
def update_progress(self, value): """更新进度条""" self.progress.setValue(int(value))
def update_status(self, text, color=None): """更新状态文本""" self.status_label.setText(text) if color: self.status_label.setStyleSheet(f""" QLabel {{ color: {color}; font-size: 12px; padding: 5px; background: #f5f5f5; border-radius: 5px; }} """) else: self.status_label.setStyleSheet(""" QLabel { color: #666; font-size: 12px; padding: 5px; background: #f5f5f5; border-radius: 5px; } """)
def open_output(self): """打开输出目录""" if not self.processor.source: QMessageBox.warning(self, "错误", "请先选择视频文件") return
try: base_dir = os.path.dirname(self.processor.source) if self.seconds_radio.isChecked(): prefix = "秒分割" elif self.segments_radio.isChecked(): prefix = "段分割" else: prefix = "区间提取"
output_dir = os.path.join(base_dir, f"{prefix}_输出")
if not os.path.exists(output_dir): os.makedirs(output_dir, exist_ok=True) self.update_status("创建输出目录", "#5D9CEC")
if os.name == 'nt': os.startfile(output_dir) elif os.name == 'posix': subprocess.call(('xdg-open' if os.uname().sysname == 'Linux' else 'open', output_dir))
self.update_status(f"已打开: {os.path.basename(output_dir)}", "#5D9CEC")
except Exception as e: QMessageBox.critical(self, "错误", f"无法打开输出目录: {str(e)}")
if __name__ == "__main__": app = QApplication([])
# 设置应用样式 app.setStyle("Fusion")
# 创建并使用自定义字体 font = QFont() font.setFamily("Microsoft YaHei" if os.name == 'nt' else "PingFang SC") font.setPointSize(10) app.setFont(font)
# 设置调色板 palette = app.palette() palette.setColor(palette.ColorRole.Window, QColor(240, 247, 250)) palette.setColor(palette.ColorRole.WindowText, QColor(53, 53, 53)) palette.setColor(palette.ColorRole.Base, QColor(255, 255, 255)) palette.setColor(palette.ColorRole.AlternateBase, QColor(240, 247, 250)) palette.setColor(palette.ColorRole.ToolTipBase, QColor(255, 255, 255)) palette.setColor(palette.ColorRole.ToolTipText, QColor(53, 53, 53)) palette.setColor(palette.ColorRole.Text, QColor(53, 53, 53)) palette.setColor(palette.ColorRole.Button, QColor(240, 247, 250)) palette.setColor(palette.ColorRole.ButtonText, QColor(53, 53, 53)) palette.setColor(palette.ColorRole.BrightText, QColor(255, 255, 255)) palette.setColor(palette.ColorRole.Highlight, QColor(93, 156, 236)) palette.setColor(palette.ColorRole.HighlightedText, QColor(255, 255, 255)) app.setPalette(palette)
window = VideoSplitterUI() window.show() app.exec() |
七、总结与展望
7.1 技术总结
- Qt6的拖拽API真香！
- FFmpeg处理视频稳定高效
- 多线程+信号槽让UI保持流畅
7.2 未来计划
- 云端视频处理
- AI智能分段
- 插件系统
