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
原始近4G的mpg的信息是：
换成text模式：
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 : [email protected] 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
后来也去试了试
单个音频文件的效果：
Easy模式：
Text模式：
HTML模式：
转载请注明：在路上 » 【记录】Mac中下载MediaInfo查看音频视频文件信息