給個建議，去下載MediaInfo
https://mediaarea.net/zh-TW/MediaInfo
懶得抓的話，MPC-HC裡面也有內建
在影片畫面上按右鍵 > 內容 > MediaInfo媒體資訊，像這樣
那頁畫面的左下角有個另存新檔，存下來之後再把那頁的資訊貼上來
像這樣
引用:
General
Complete name : D:\Newton's Second Law.flv
Format : Flash Video
File size : 246 MiB
Duration : 46mn 44s
Overall bit rate : 737 Kbps
Video
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : 7
Duration : 46mn 44s
Bit rate : 600 Kbps
Width : 640 pixels
Height : 480 pixels
Display aspect ratio : 4:3
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) : 0.078
Stream size : 201 MiB (81%)
Writing library : x264 core 122
Encoding settings : cabac=1 / ref=4 / deblock=1:0:0 / analyse=0x3:0x113 / me=umh / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=0 / 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=40 / rc=abr / mbtree=1 / bitrate=600 / ratetol=6.7 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / ip_ratio=1.41 / aq=1:1.00
Audio
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 3
Mode : Joint stereo
Mode extension : MS Stereo
Codec ID : 2
Codec ID/Hint : MP3
Duration : 46mn 44s
Bit rate mode : Constant
Bit rate : 128 Kbps
Channel(s) : 2 channels
Sampling rate : 44.1 KHz
Compression mode : Lossy
Delay relative to video : 40ms
Stream size : 42.8 MiB (17%)
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如果連MediaInfo都抓不到，那就很有可能是私有格式