Python3 代码解析视频信息时报错 'not enough values to unpack' 解决方法

Python3 代码解析视频信息时报错 'not enough values to unpack' 解决方法/n/n本文提供了解决 Python3 代码在解析视频信息时，因音频信息缺失导致的 'not enough values to unpack (expected 3, got 1)' 错误的方案。代码中增加了对音频信息的判断，并对没有音频信息的视频设置默认值 'N/A'，确保代码可以成功处理所有视频。/n/n问题描述:/n/n当解析视频信息时，可能会出现视频没有音频信息的情况，此时 audio_info 的长度为 1，而代码中假设了每个视频都会有音频信息，因此会出现 not enough values to unpack (expected 3, got 1) 错误。/n/n解决方法:/n/n在解析输出结果之前，先判断一下是否有音频信息，如果没有，将 audio_info 赋值为 ['N/A', 'N/A', 'N/A']，即音频码率、音频采样率、音频语言都为 N/A。/n/n修改后的代码:/n/npython/nimport os/nimport re/nimport subprocess/nimport openpyxl/nimport math/nfrom openpyxl.styles import Font, PatternFill, Alignment/n/n# 视频格式/nsupported_formats = ['.mp4', '.avi', '.mkv', '.wmv', '.mov', '.flv', '.m2ts', '.ts', '.rm', '.rmvb',/n '.vob', '.3gp', '.webm', '.hdmov', '.mp4v', '.mpv4', '.divx', '.xvid', '.f4v',/n '.mpeg', '.asf', '.asx', '.m2t']/n# 视频文件夹/nvideo_folder = input(/'请输入文件夹路径：/')/n# 输出Excel路径/nexcel_folder = '.'/n# 输出Excel文件名/nexcel_file = 'video_info.xlsx'/n# 正则表达式匹配码率数据中的空格/npattern = re.compile(r'(/d+)/s+(/d+)')/n# 创建Excel文件/nwb = openpyxl.Workbook()/nws = wb.active/nws.title = 'Video Info'/n/n/n# 获取视频文件列表（包括子目录）/nvideo_files = []/nfor root, dirs, files in os.walk(video_folder):/n for file in files:/n for format in supported_formats:/n if file.endswith(format):/n video_files.append(os.path.join(root, file))/n break/n/n# 锁定表头/nws.freeze_panes = 'A2'/n/n# 设置表头样式/nheader_font = Font(bold=True, color='800080') # 紫色/nheader_fill = PatternFill('solid', fgColor='C5E0B4')/nheader_alignment = Alignment(horizontal='center', vertical='center')/nheaders = ['文件名', '文件路径', '格式', '大小', '时长', '分辨率', '码率', '帧率', '音频码率', '音频采样率', '音频语言', '压缩比率']/nfor col, header in enumerate(headers, start=1):/n cell = ws.cell(row=1, column=col, value=header)/n cell.font = header_font/n cell.fill = header_fill/n cell.alignment = header_alignment/n/n# 处理失败文件个数/nfailed_count = 0/n/n# 遍历所有视频文件/nsuccess_count = 0/nrow = 2 # 从第二行开始写入数据/nfor video_file in video_files:/n try:/n # 获取文件名/n file_name = os.path.basename(video_file)/n/n # 获取文件大小并进行单位换算/n size = os.path.getsize(video_file)/n if size < 1024:/n size_str = f'{size} B'/n elif size < 1024 * 1024:/n size_str = f'{size / 1024:.2f} KiB'/n elif size < 1024 * 1024 * 1024:/n size_str = f'{size / 1024 / 1024:.2f} MiB'/n else:/n size_str = f'{size / 1024 / 1024 / 1024:.2f} GiB'/n/n # 使用mediainfo获取视频信息 / 音频信息/n video_result = subprocess.run(['mediainfo', '--Inform=Video;%Format%|%Width%x%Height%|%BitRate/String%|%FrameRate%|%Duration/String3%', video_file], stdout=subprocess.PIPE)/n video_output = video_result.stdout.decode().strip()/n audio_result = subprocess.run(['mediainfo', '--Inform=Audio;%BitRate/String%|%SamplingRate/String%|%Language/String%', video_file], stdout=subprocess.PIPE)/n audio_output = audio_result.stdout.decode().strip()/n/n # 解析输出结果/n video_info = video_output.split('|')/n if audio_output:/n audio_info = audio_output.split('|')/n else:/n audio_info = ['N/A', 'N/A', 'N/A']/n/n # 处理多音轨情况/n audio_bitrate = []/n audio_sampling_rate = []/n audio_lang = []/n for i in range(len(audio_info) // 3):/n audio_bitrate.append(audio_info[i * 3])/n audio_sampling_rate.append(audio_info[i * 3 + 1])/n audio_lang.append(audio_info[i * 3 + 2])/n/n # 时长取整/n duration = video_info[4].split('.')[0]/n h, m, s = duration.split(':')/n duration = f'{h}:{m}:{str(s).zfill(2)}'/n/n # 以分钟计算的时长 2/n duration_minutes = int(h) * 60 + int(m) + math.ceil(float(s)) / 60/n/n # 计算压缩比率/n ratio = round(duration_minutes / size * 1000000000, 2)/n/n # 使用正则表达式替换码率数据中第一个数字和第二个数字之间的空格/n bitrate = re.sub(pattern, r'/1/2', video_info[2])/n/n # 写入Excel文件/n ws.cell(row=row, column=1, value=file_name)/n ws.cell(row=row, column=2, value=os.path.dirname(video_file)) # 写入文件夹路径/n ws.cell(row=row, column=3, value=video_info[0])/n ws.cell(row=row, column=4, value=size_str)/n ws.cell(row=row, column=5, value=duration)/n ws.cell(row=row, column=6, value=video_info[1])/n ws.cell(row=row, column=7, value=bitrate)/n ws.cell(row=row, column=8, value=video_info[3])/n ws.cell(row=row, column=9, value=' / '.join(audio_bitrate))/n ws.cell(row=row, column=10, value=' / '.join(audio_sampling_rate))/n ws.cell(row=row, column=11, value=' / '.join(audio_lang))/n ws.cell(row=row, column=12, value=ratio)/n # 打印进度/n print(f'已处理 {success_count+1}/{len(video_files)} 共计', end='/r')/n success_count += 1/n row += 1/n/n except Exception as e:/n # 处理失败，跳过并打印文件名/n failed_count += 1/n print(f'处理文件 {file_name} 时失败：{e}')/n # 将失败的文件写入到err.txt/n with open('err.txt', 'a') as f:/n f.write(f'{file_name}/n')/n continue/n/n# 总计处理文件数/ntotal_count = len(video_files)/n/n# 调整L列左对齐/nl_col = ws['L']/nfor cell in l_col:/n cell.alignment = Alignment(horizontal='left') # 左对齐/n/n# 固定列宽/nfor col in ws.columns:/n col_letter = col[0].column_letter/n if col_letter not in ['']: # 不固定文件夹路径、格式、音频语言列的宽度/n ws.column_dimensions[col_letter].width = 11/n/n# 保存Excel文件/nif not os.path.exists(excel_folder):/n os.makedirs(excel_folder)/nexcel_file_path = os.path.join(excel_folder, excel_file)/nwb.save(excel_file_path)/n/n# 打印处理失败文件个数和总计处理文件数/nprint(f'已完成，处理成功 {success_count} 个文件，处理失败 {failed_count} 个文件，视频信息已保存到 {excel_file_path}')/n/n/n代码解释:/n/n1. 增加了对 audio_output 的判断：/npython/n if audio_output:/n audio_info = audio_output.split('|')/n else:/n audio_info = ['N/A', 'N/A', 'N/A']/n/n/n2. 将 audio_info 赋值为 ['N/A', 'N/A', 'N/A']，确保代码可以正常运行。/n/n注意事项:/n/n1. 确保 mediainfo 命令已安装。/n2. 可以根据需要修改代码中的视频格式列表和输出路径。/n/n总结:/n/n本文提供了解决 Python3 代码在解析视频信息时，因音频信息缺失导致的错误的方案。代码中增加了对音频信息的判断，并对没有音频信息的视频设置默认值 'N/A'，确保代码可以成功处理所有视频。希望本文对您有所帮助。/n