【记录】Mac中下载MediaInfo查看音频视频文件信息

折腾：

【记录】Mac中试用HandBrake转换mpg视频文件为mp4

期间，去参考：

这可能是 Mac 上最佳的视频压制和格式转换方案 | Patrick’s Blog

https://patricorgi.github.io/2016/11/12/这可能是%20Mac%20上最佳视频格式转换和压制方案/

去为了对比用Handbrake压缩视频文件前后的码率和其他信息，所以去下载可以方便查看视频的各种属性的信息的，包括视频编码，码率，帧数，音频编码等等

去mac中下载：

mac Media-Info

MediaInfo – Download MediaInfo for macOS

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原始近4G的mpg的信息是：

换成text模式：

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General
 
Complete name                            : /Users/crifan/dev/dev_root/projects/xxx_to_cn/
视频
/ICS_Sendemaster/CTT_02_17_CH_Subs.mpg
 
Format                                   : MPEG-PS
 
File size                                : 3.99 GiB
 
Duration                                 : 30 min 0 s
 
Overall bit rate mode                    : Variable
 
Overall bit rate                         : 19.0 Mb/s
 
Video
 
ID                                       : 224 (0xE0)
 
Format                                   : MPEG Video
 
Format version                           : Version 2
 
Format profile                           : Main@High
 
Format settings                          : BVOP
 
Format settings, BVOP                    : Yes
 
Format settings, Matrix                  : Default
 
Format settings, GOP                     : M=3, N=12
 
Duration                                 : 30 min 0 s
 
Bit rate mode                            : Variable
 
Bit rate                                 : 18.3 Mb/s
 
Maximum bit rate                         : 25.0 Mb/s
 
Width                                    : 1 920 pixels
 
Height                                   : 1 080 pixels
 
Display aspect ratio                     : 16:9
 
Frame rate                               : 25.000 FPS
 
Standard                                 : PAL
 
Color space                              : YUV
 
Chroma subsampling                       : 4:2:0
 
Bit depth                                : 8 bits
 
Scan type                                : Progressive
 
Compression mode                         : Lossy
 
Bits/(Pixel*Frame)                       : 0.352
 
Time code of first frame                 : 01:00:00:00
 
Time code source                         : Group of pictures header
 
Stream size                              : 3.83 GiB (96%)
 
Color primaries                          : BT.709
 
Transfer characteristics                 : BT.709
 
Matrix coefficients                      : BT.709
 
Audio
 
ID                                       : 192 (0xC0)
 
Format                                   : MPEG Audio
 
Format version                           : Version 1
 
Format profile                           : Layer 2
 
Duration                                 : 30 min 0 s
 
Bit rate mode                            : Constant
 
Bit rate                                 : 384 kb/s
 
Channel(s)                               : 2 channels
 
Sampling rate                            : 48.0 kHz
 
Frame rate                               : 41.667 FPS (1152 SPF)
 
Compression mode                         : Lossy
 
Stream size                              : 82.4 MiB (2%)

HTML效果更好：

再去对比，此处用Handbrake压缩后的效果：

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General
 
Complete name                            : /Users/crifan/dev/dev_root/projects/xxx_to_cn/
视频
/converted/HandBrake/Fast 720p30/CTT_02_17_CH_Subs.mp4
 
Format                                   : MPEG-4
 
Format profile                           : Base Media / Version 2
 
Codec ID                                 : mp42 (isom/iso2/avc1/mp41)
 
File size                                : 387 MiB
 
Duration                                 : 30 min 0 s
 
Overall bit rate mode                    : Variable
 
Overall bit rate                         : 1 803 kb/s
 
Encoded date                             : UTC 2018-08-23 15:27:56
 
Tagged date                              : UTC 2018-08-23 15:27:56
 
Writing application                      : HandBrake 1.1.1 2018061800
 
Video
 
ID                                       : 1
 
Format                                   : AVC
 
Format/Info                              : Advanced Video Codec
 
Format profile                           : Main@L3.1
 
Format settings                          : CABAC / 5 Ref Frames
 
Format settings, CABAC                   : Yes
 
Format settings, ReFrames                : 5 frames
 
Codec ID                                 : avc1
 
Codec ID/Info                            : Advanced Video Coding
 
Duration                                 : 30 min 0 s
 
Bit rate                                 : 1 650 kb/s
 
Width                                    : 1 280 pixels
 
Height                                   : 720 pixels
 
Display aspect ratio                     : 16:9
 
Frame rate mode                          : Constant
 
Frame rate                               : 25.000 FPS
 
Color space                              : YUV
 
Chroma subsampling                       : 4:2:0
 
Bit depth                                : 8 bits
 
Scan type                                : Progressive
 
Bits/(Pixel*Frame)                       : 0.072
 
Stream size                              : 354 MiB (92%)
 
Writing library                          : x264 core 155 r2901 7d0ff22
 
Encoding settings                        : cabac=1 / ref=5 / deblock=1:0:0 / analyse=0x1:0x131 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=6 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=8 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=2pass / mbtree=1 / bitrate=1650 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / vbv_maxrate=14000 / vbv_bufsize=14000 / nal_hrd=none / filler=0 / ip_ratio=1.40 / aq=1:1.00
 
Encoded date                             : UTC 2018-08-23 15:27:56
 
Tagged date                              : UTC 2018-08-23 15:27:56
 
Color range                              : Limited
 
Color primaries                          : BT.709
 
Transfer characteristics                 : BT.709
 
Matrix coefficients                      : BT.709
 
Audio
 
ID                                       : 2
 
Format                                   : AAC
 
Format/Info                              : Advanced Audio Codec
 
Format profile                           : LC
 
Codec ID                                 : mp4a-40-2
 
Duration                                 : 30 min 0 s
 
Bit rate mode                            : Variable
 
Bit rate                                 : 144 kb/s
 
Channel(s)                               : 2 channels
 
Channel positions                        : Front: L R
 
Sampling rate                            : 48.0 kHz
 
Frame rate                               : 46.875 FPS (1024 SPF)
 
Compression mode                         : Lossy
 
Stream size                              : 31.4 MiB (8%)
 
Title                                    : Stereo / Stereo
 
Default                                  : Yes
 
Alternate group                          : 1
 
Encoded date                             : UTC 2018-08-23 15:27:56
 
Tagged date                              : UTC 2018-08-23 15:27:56