比如，有一个QString，它的内容非常多。
MediaInfoLib - v0.7.45Option not knownGeneral
Unique ID : 34706271566396063239680443737195398397 (0x1A1C2F4CE01B390F80CE545018E7C4FD)
Complete name : D:\3-D Sex And Zen.AVI
Format : Matroska
File size : 3.25 GiB
Duration : 1h 53mn
Overall bit rate : 4 101 Kbps
Writing application : PotEncoder
Writing library : PotEncoder
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Baseline@L3.0
Format settings, CABAC : No
Format settings, ReFrames : 1 frame
Codec ID : V_MPEG4/ISO/AVC
Duration : 1h 53mn
Bit rate : 4 000 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 29.970 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.145
Stream size : 3.08 GiB (95%)
Writing library : x264 core 112
Encoding settings : cabac=0 / ref=1 / deblock=1:-1:-1 / analyse=0x1:0x111 / me=hex / subme=5 / psy=1 / psy_rd=0.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=0 / threads=24 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / constrained_intra=0 / bframes=0 / weightp=0 / keyint=250 / keyint_min=25 / scenecut=0 / intra_refresh=0 / rc_lookahead=40 / rc=abr / mbtree=1 / bitrate=4000 / ratetol=1.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
Language : English
Audio
ID : 2
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 3
Mode : Joint stereo
Mode extension : MS Stereo
Codec ID : A_MPEG/L3
Codec ID/Hint : MP3
Duration : 1h 53mn
Bit rate mode : Constant
Bit rate : 128 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Compression mode : Lossy
Delay relative to video : 24ms
Stream size : 104 MiB (3%)
Writing library : LAME3.98.2
Language : English
现在我希望能把Video的信息和Audio的信息分别提取出来放入不同的textBrowser显示。该如何做呢？
