Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42 (isom/mp42)
File size : 337 MiB
Duration : 1 h 23 min
Overall bit rate mode : Variable
Overall bit rate : 562 kb/s
Encoded date : UTC 2020-04-23 00:22:37
Tagged date : UTC 2020-04-23 00:22:37
gsst : 0
gstd : 5034271
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings : CABAC / 3 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference : 3 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 1 h 23 min
Bit rate : 431 kb/s
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.019
Stream size : 258 MiB (77%)
Title : ISO Media file produced by Google Inc. Created on: 04/22/2020.
Writing library : x264 core 155 r2901 7d0ff22
Encoded date : UTC 2020-04-23 00:22:37
Tagged date : UTC 2020-04-23 00:22:37
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Codec configuration box : avcC
Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 1 h 23 min
Bit rate mode : Variable
Bit rate : 128 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 44.1 kHz
Frame rate : 43.066 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 76.8 MiB (23%)
Title : ISO Media file produced by Google Inc. Created on: 04/22/2020.
Encoded date : UTC 2020-04-23 00:22:37
Tagged date : UTC 2020-04-23 00:22:37
我有这些信息，我想用ffmpeg得到同样的结果。我应该怎么做？我必须使用什么代码？
先谢谢你...
不知道你为什么要这样做，但使用这些命令将模拟大多数细节。
ffmpeg -i input.mp4 -c:v libx264 -preset slow -profile:v main -level 3.1 -refs 3 -color_primaries bt709 -colorspace bt709 -color_trc bt709 -vf "scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:-1:-1,setsar=1,fps=24000/1001,format=yuv420p" -b:v 431k -c:a aac -ac 2 -ar 44100 -movflags +faststart -brand mp42 output.mp4
ffmpeg -i input.mp4 -c:v libx264 -level 4 -refs 3 -color_primaries bt709 -colorspace bt709 -color_trc bt709 -vf "scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:-1:-1,setsar=1,fps=24,format=yuv420p" -c:a aac -ac 2 -ar 44100 -movflags +faststart output.mp4