案例故事： 任何一款终端产品只要涉及视频播放，就肯定涉及视频的解码播放测试，
作为一名专业的多媒体测试人员，我们需要一堆的规范的标准视频测试文件，
但是发现现有的视频资源名字命名的很随意比如：big_buck_bunny_720p_h264.mp4,
以上命名不能看出视频文件的具体编码规格，
测试经理要求我进行批量重命名工作，模板如下,
视频流信息 + 音频流信息 + 容器.容器
视频编码格式_规格_分辨率_帧率_视频比特率_音频编码格式_采样率_声道数_音频比特率_容器.容器
H.264_BPL3.2_1280x720_30fps_1024kbps_aac_44.1KHz_stereo_128Kbps_mp4.mp4
| 视频技术参数 | 参数释义 | 举例 |
|---|---|---|
| 视频编码格式 （压缩技术） | 即将图片数据压缩的一类技术, 不同的编码格式， 其压缩率与压缩效果不一样。 | H.265/H.264/H.263 Mpeg1/Mpeg2/Mpeg4, WMV,Real,VP8,VP9 |
| 视频分辨率 (单位：Pixel) | 视频里的每一张图片的分辨率 （图片长像素点数量*图片宽像素点数量） | 4096×2160（4K), 1920x1080, 1280x720，720×480, 640x480, 320x480等 |
| 视频帧率 (单位：fps) | 每秒钟的图片数量，图片就是帧，一帧代表一张图片 | 12fps,24fps，30fps，60fps |
| 视频比特率 (单位：Kbps) | 每秒钟的视频流所含的数据量， 大概等于 = 编码格式压缩比帧率分辨率 | 1Mbps,5Mbps, 10Mbps, 512Kbps等等。 |
| 视频容器 | 文件后缀，将视频流+音频流封装的一种文件格式 | .mp4; .3gp; .mkv; .mov; .wmv; .avi; .webm; .rmvb; .rm; .ts; |
+---Input_Video #批量放入待命名的视频| 1.mp4| 2.3gp| +---Output_Video #批量输出已命名的视频| H.264_BPL3.2_1280x720_30fps_1024kbps_aac_44.1KHz_stereo_128Kbps_mp4.mp4| Mpeg4_SPL1_640x480_12fps_512kbps_AAC_24KHz_stereo_56Kbps_3gp.3gp|\video_info.py # 视频流解析模块\audio_info.py # 音频流解析模块\rename_video.py #Python重命名视频的批处理脚本，双击运行即可
由于涉及较复杂的代码，建议直接用面向对象类的编程方式实现：
# coding=utf-8import osimport reimport subprocessclass VideoinfoGetter(): def __init__(self, video_file): '''判断文件是否存在，如果存在获取其mediainfo信息''' if os.path.exists(video_file): self.video_file = video_file p_obj = subprocess.Popen('mediainfo "%s"' % self.video_file, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE) self.info = p_obj.stdout.read().decode("utf-8") # 解决非英文字符的编码问题 else: raise FileNotFoundError("Not this File!") # 如果多媒体文件路径不存在，必须中断 def get_video_codec(self): '''获取视频的编码格式，比如H.264, Mpeg4, H.263等''' try: video_codec = re.findall(r"Codec ID\s+:\s(.*)", self.info) if (len(video_codec) >= 3): video_codec = video_codec[1].strip() elif (len(video_codec) == 2): video_codec = video_codec[0].strip() elif (len(video_codec) == 1): video_codec = video_codec[0].strip() else: video_codec = "undef" except: video_codec = "undef" return self.__format_video_codec(video_codec) def get_video_profile(self): '''获取视频编码格式的规格，比如Main Profile Level 3.2''' try: v_profile = re.findall(r"Format profile\s+:\s(.*)", self.info) # print vprofile if (len(v_profile) == 3): video_profile = v_profile[1].strip() elif (len(v_profile) == 2): video_profile = v_profile[0].strip() elif (len(v_profile) == 1): video_profile = v_profile[0].strip() else: video_profile = "undef" except: video_profile = "undef" return self.__format_video_profile(video_profile) def get_video_fps(self): '''获取视频的帧率，比如60fps,30fps''' try: video_fps = re.findall(r'Frame rate\s+:\s(.*)', self.info)[0].strip() return self.__format_fps(video_fps) except: return "undef" def get_video_height(self): '''获取视频图像的高度（宽方向上的像素点）''' try: video_height = re.findall(r"Height\s+:\s(.*) pixels", self.info)[0].strip() return video_height except: return "undef" def get_video_weight(self): '''获取视频图像的宽度（长方向上的像素点）''' try: video_weight = re.findall(r"Width\s+:\s(.*) pixels", self.info)[0].strip() return video_weight except: return "undef" def get_video_bitrate(self): '''获取视频比特率,比如560kbps''' try: # print findall(r"Bit rate\s+:\s(.*)", self.info) video_bitrate = re.findall(r"Bit rate\s+:\s(.*)", self.info)[0].strip() return self.__format_bitrate(video_bitrate) except: return "undef" def get_video_container(self): '''获取视频容器，即文件后缀名,比如.mp4 ,.3gp''' _, video_container = os.path.splitext(self.video_file) if not video_container: raise NameError("This file no extension") audio_container = video_container.replace(".", "") return audio_container def __format_video_profile(self, info): '''格式化视频的规格参数，比如，MPL3.2''' v_profile_level = None v_profile = None v_level = None if (re.match(r'(.*)@(.*)', info)): m = re.match(r'(.*)@(.*)', info) m1 = m.group(1) m2 = m.group(2) if (m1 == "Simple"): v_profile = "SP" elif (m1 == "BaseLine"): v_profile = "BP" elif (m1 == "Baseline"): v_profile = "BP" elif (m1 == "Advanced Simple"): v_profile = "ASP" elif (m1 == "AdvancedSimple"): v_profile = "ASP" elif (m1 == "Main"): v_profile = "MP" elif (m1 == "High"): v_profile = "HP" elif (m1 == "Advanced Profile"): v_profile = "AP" elif (m1 == "Simple Profile Low"): v_profile = "SPL" elif (m1 == "Simple Profile Main"): v_profile = "SPM" elif (m1 == "Main Profile Main"): v_profile = "MPM" else: v_profile = m1 if (m2 == "0.0"): v_level = "L0.0" else: v_level = m2 v_profile_level = v_profile + v_level elif (re.match(r"(.*)\s(.*)", info)): v_profile_level = re.sub(r"\s", "", info) else: v_profile_level = info return v_profile_level def __format_video_codec(self, info): '''格式化输出视频编码格式''' v_codec = None if (info == "avc1"): v_codec = "H.264" elif (info == "AVC"): v_codec = "H.264" elif (info == "27"): v_codec = "H.264" elif (info == "s263"): v_codec = "H.263" elif (info == "20"): v_codec = "Mpeg4" elif (info == "DIVX"): v_codec = "DIVX4" elif (info == "DX50"): v_codec = "DIVX5" elif (info == "XVID"): v_codec = "XVID" elif (info == "WVC1"): v_codec = "VC1" elif (info == "WMV1"): v_codec = "WMV7" elif (info == "WMV2"): v_codec = "WMV8" elif (info == "WMV3"): v_codec = "WMV9" elif (info == "V_VP8"): v_codec = "VP8" elif (info == "2"): v_codec = "SorensonSpark" elif (info == "RV40"): v_codec = "Realvideo" else: v_codec = "undef" return v_codec def __format_fps(self, info): '''格式化输出帧率''' if (re.match(r'(.*) fps', info)): m = re.match(r'(.*) fps', info) try: info = str(int(int(float(m.group(1)) + 0.5))) + "fps" except: info = "Nofps" else: info = "Nofps" return info def __format_bitrate(self, info): '''格式化输出比特率''' if (re.match(r'(.*) Kbps', info)): info = re.sub(r'\s', "", info) m = re.match(r'(.*)Kbps', info) try: info = str(int(float(m.group(1)))) + "Kbps" except Exception as e: # print(e) info = "NoBit" else: info = "NoBit" return info请参考文章《Python mediainfo批量重命名音频文件》里的audio_info.py
实现批量重命名视频文件
# coding=utf-8import osimport shutilimport video_infoimport audio_infocurdir = os.getcwd()input_video_path = curdir + "\\Input_Video\\"filelist = os.listdir(input_video_path)output_video_path = curdir + "\\Output_Video\\"if (len(filelist) != 0): for i in filelist: video_file = os.path.join(input_video_path, i) # 先解析视频流 v_obj = video_info.VideoinfoGetter(video_file) vcodec = v_obj.get_video_codec() vprofile = v_obj.get_video_profile() vresoultion = v_obj.get_video_weight() + "x" + v_obj.get_video_height() vfps = v_obj.get_video_fps() vbitrate = v_obj.get_video_bitrate() vcontainer = v_obj.get_video_container() # 再解析音频流 a_obj = audio_info.AudioInfoGetter(video_file) acodec = a_obj.get_audio_codec() asample_rate = a_obj.get_audio_sample_rate() achannel = a_obj.get_audio_channel() abitrate = a_obj.get_audio_bitrate() # 重命名 new_video_name = vcodec + "_" + vprofile + "_" + vresoultion + "_" + vfps + "_" + vbitrate + "_" + acodec + "_" + asample_rate + "_" + achannel + "_" + abitrate + "_" + vcontainer + "." + vcontainer print(new_video_name) new_video_file = os.path.join(output_video_path, new_video_name) # 复制到新的路径 shutil.copyfile(video_file, new_video_file) # 复制文件else: print("It's a Empty folder, please input the audio files which need to be renamed firstly!!!")os.system("pause")包含：mediainfo.exe(更建议丢到某个环境变量里去），
各种编码格式的视频文件，video_info.py模块，audio_info.py模块，rename_video.py批处理脚本
跳转到自拍教程官网下载
运行效果如下：
小提示： 比如Android手机，Google推出了CDD(Compatibiltiy Definition Document兼容性定义文档)，
其第5部分，涉及了很多视频编解码格式的规定，比如H.264的规定：
这就是Android最主要的视频编解码测试需求。
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