Command to see media file info in terminal?

avprobe from the package libav-tools is pretty good.

Sample output avprobe somefile.mp4

avprobe version 0.8.4-4:0.8.4-0ubuntu0.12.04.1, Copyright (c) 2007-2012 the Libav developers
  built on Nov  6 2012 16:51:33 with gcc 4.6.3
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'somefile.mp4':
  Metadata:
    major_brand     : avc1
    minor_version   : 0
    compatible_brands: isomavc1
    creation_time   : 2012-08-10 15:01:14
  Duration: 00:01:02.55, start: 0.000000, bitrate: 682 kb/s
    Stream #0.0(und): Video: h264 (High), yuv420p, 1904x1040 [PAR 1:1 DAR 119:65], 680 kb/s, 19.18 fps, 20 tbr, 20 tbn, 40 tbc
    Metadata:
      creation_time   : 2012-08-10 15:01:14

To add to Thunar custom action, in relation to what was suggested here, the analog formula to add would be:

gnome-terminal --window-with-profile=new1 -e "avprobe %f"

I use mediainfo to get all properties of media files ( audio and video files )

root@server:Videos::08:47 PM# mediainfo Vazquez.mp4 
General
Complete name                            : Vazquez.mp4
Format                                   : MPEG-4
Format profile                           : Base Media / Version 2
Codec ID                                 : mp42
File size                                : 103 MiB
Duration                                 : 3mn 52s
Overall bit rate mode                    : Variable
Overall bit rate                         : 3 730 Kbps
Encoded date                             : UTC 2011-11-10 07:30:57
Tagged date                              : UTC 2011-11-10 07:30:57
gsst                                     : 0
gstd                                     : 232083
gssd                                     : B7AA66E45HH1322313268839354
gshh                                     : o-o.preferred.bhartibb-blr1.v12.lscache7.c.youtube.com

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : [email protected]
Format settings, CABAC                   : Yes
Format settings, ReFrames                : 1 frame
Format settings, GOP                     : M=1, N=24
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 3mn 52s
Bit rate                                 : 3 576 Kbps
Maximum bit rate                         : 5 947 Kbps
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 24.000 fps
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.072
Stream size                              : 98.9 MiB (96%)
Tagged date                              : UTC 2011-11-10 07:30:58

Audio
ID                                       : 2
Format                                   : AAC
Format/Info                              : Advanced Audio Codec
Format profile                           : LC
Codec ID                                 : 40
Duration                                 : 3mn 52s
Bit rate mode                            : Variable
Bit rate                                 : 152 Kbps
Maximum bit rate                         : 188 Kbps
Channel(s)                               : 2 channels
Channel positions                        : Front: L R
Sampling rate                            : 44.1 KHz
Compression mode                         : Lossy
Stream size                              : 4.20 MiB (4%)
Title                                    : IsoMedia File Produced by Google, 5-11-2011
Encoded date                             : UTC 2011-11-10 07:30:58
Tagged date                              : UTC 2011-11-10 07:30:58

mediainfo is now in Ubuntu repositories and can be installed by running

sudo apt install mediainfo

Previously it was necessary to use a PPA but this has no packages for current Ubuntu versions.


exiftool

This might be a surprise, but exiftool from libimage-exiftool-perl Install libimage-exiftool-perl has this capability as well.

It supports showing info from a lot of media file formats, and can write metadata too for some of these formats.

Example output for an audio file:

# exiftool The\ Police\ -\ Live\!\ Disc\ 2\ -\ Atlanta\ -\ 01.\ Synchronicity\ I.mp3 
ExifTool Version Number         : 9.13
File Name                       : The Police - Live! Disc 2 - Atlanta - 01. Synchronicity I.mp3
Directory                       : .
File Size                       : 3.9 MB
File Modification Date/Time     : 2012:03:23 19:44:23+01:00
File Access Date/Time           : 2012:12:26 11:44:38+01:00
File Inode Change Date/Time     : 2012:03:23 19:44:23+01:00
File Permissions                : rw-------
File Type                       : MP3
MIME Type                       : audio/mpeg
MPEG Audio Version              : 1
Audio Layer                     : 3
Sample Rate                     : 44100
Channel Mode                    : Joint Stereo
MS Stereo                       : On
Intensity Stereo                : Off
Copyright Flag                  : False
Original Media                  : True
Emphasis                        : None
VBR Frames                      : 6660
VBR Bytes                       : 4044318
VBR Scale                       : 57
Encoder                         : LAME3.96
Lame VBR Quality                : 4
Lame Quality                    : 3
Lame Method                     : VBR (old/rh)
Lame Low Pass Filter            : 18 kHz
Lame Bitrate                    : 32 kbps
Lame Stereo Mode                : Joint Stereo
Track                           : 1/15
Disc                            : 2/2
Artist                          : The Police
Title                           : Synchronicity I
Album                           : Live!
Year                            : 2003
Genre                           : Rock
Comment                         : Atlanta
Discid                          : c611270f
ID3 Size                        : 128
Audio Bitrate                   : 186 kbps
Date/Time Original              : 2003
Duration                        : 0:02:53 (approx)