FFmpeg命令行练习（3）

多媒体分析工具ffprobe

ffprobe -show_streams 111.mp4

ffprobe version 4.1 Copyright (c) 2007-2018 the FFmpeg developers
  built with Apple LLVM version 10.0.0 (clang-1000.11.45.5)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.1_1 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gpl --enable-libmp3lame --enable-libopus --enable-libsnappy --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-opencl --enable-videotoolbox
  libavutil      56. 22.100 / 56. 22.100
  libavcodec     58. 35.100 / 58. 35.100
  libavformat    58. 20.100 / 58. 20.100
  libavdevice    58.  5.100 / 58.  5.100
  libavfilter     7. 40.101 /  7. 40.101
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  3.100 /  5.  3.100
  libswresample   3.  3.100 /  3.  3.100
  libpostproc    55.  3.100 / 55.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '111.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 0
    compatible_brands: mp41avc1qt  
    creation_time   : 2017-02-04T01:33:49.000000Z
    playback_requirements: QuickTime 6.0 or greater
    playback_requirements-eng: QuickTime 6.0 or greater
    encoder         : vlc 2.1.5 stream output
    encoder-eng     : vlc 2.1.5 stream output
  Duration: 00:01:21.89, start: 0.000000, bitrate: 2037 kb/s
    Stream #0:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 16000 Hz, mono, fltp, 23 kb/s (default)
    Metadata:
      creation_time   : 2017-02-04T01:33:49.000000Z
      handler_name    : SoundHandler
    Stream #0:1(eng): Video: h264 (Main) (avc1 / 0x31637661), yuvj420p(pc, bt709), 1920x1080, 2009 kb/s, 25 fps, 25 tbr, 1000k tbn, 50 tbc (default)
    Metadata:
      creation_time   : 2017-02-04T01:33:49.000000Z
      handler_name    : VideoHandler
[STREAM]
index=0
codec_name=aac
codec_long_name=AAC (Advanced Audio Coding)
profile=LC
codec_type=audio
codec_time_base=1/16000
codec_tag_string=mp4a
codec_tag=0x6134706d
sample_fmt=fltp
sample_rate=16000
channels=1
channel_layout=mono
bits_per_sample=0
id=N/A
r_frame_rate=0/0
avg_frame_rate=0/0
time_base=1/16000
start_pts=926
start_time=0.057875
duration_ts=1308806
duration=81.800375
bit_rate=23147
max_bit_rate=37750
bits_per_raw_sample=N/A
nb_frames=1279
nb_read_frames=N/A
nb_read_packets=N/A
DISPOSITION:default=1
DISPOSITION:dub=0
DISPOSITION:original=0
DISPOSITION:comment=0
DISPOSITION:lyrics=0
DISPOSITION:karaoke=0
DISPOSITION:forced=0
DISPOSITION:hearing_impaired=0
DISPOSITION:visual_impaired=0
DISPOSITION:clean_effects=0
DISPOSITION:attached_pic=0
DISPOSITION:timed_thumbnails=0
TAG:creation_time=2017-02-04T01:33:49.000000Z
TAG:language=eng
TAG:handler_name=SoundHandler
[/STREAM]
[STREAM]
index=1
codec_name=h264
codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
profile=Main
codec_type=video
codec_time_base=23815184/1190656253
codec_tag_string=avc1
codec_tag=0x31637661
width=1920
height=1080
coded_width=1920
coded_height=1088
has_b_frames=0
sample_aspect_ratio=N/A
display_aspect_ratio=N/A
pix_fmt=yuvj420p
level=42
color_range=pc
color_space=bt709
color_transfer=bt709
color_primaries=bt709
chroma_location=left
field_order=unknown
timecode=N/A
refs=1
is_avc=true
nal_length_size=4
id=N/A
r_frame_rate=25/1
avg_frame_rate=2048000000/81927083
time_base=1/1000000
start_pts=0
start_time=0.000000
duration_ts=81887078
duration=81.887078
bit_rate=2009362
max_bit_rate=N/A
bits_per_raw_sample=8
nb_frames=2048
nb_read_frames=N/A
nb_read_packets=N/A
DISPOSITION:default=1
DISPOSITION:dub=0
DISPOSITION:original=0
DISPOSITION:comment=0
DISPOSITION:lyrics=0
DISPOSITION:karaoke=0
DISPOSITION:forced=0
DISPOSITION:hearing_impaired=0
DISPOSITION:visual_impaired=0
DISPOSITION:clean_effects=0
DISPOSITION:attached_pic=0
DISPOSITION:timed_thumbnails=0
TAG:creation_time=2017-02-04T01:33:49.000000Z
TAG:language=eng
TAG:handler_name=VideoHandler
[/STREAM]