MediaInfo ❥ avpres-training ❥ ashley blewer

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class: middle, center    
.center[![mediainfo](/img/mediainfo.png)]

# MediaInfo

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# What is MediaInfo?

"MediaInfo is a convenient unified display of the most relevant technical and tag data for video and audio files." (From the [MediaInfo website](https://mediaarea.net/en/MediaInfo))

MediaInfo is a *metadata extraction tool*. It neatly displays technical and tag information for many types of files, with a focus on audio/video.
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# Why MediaInfo?

- Robust format support
- Robust data
- Versatile
- Works everywhere
- Open source 
- Microservice
- Easy to use

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# Robust format support

<table>
<tr>
<td>
Matroska (mkv/mka/mks) 
Ogg (ogg/ogm) 
Riff (avi/wav) 
Mpeg 1&2 container (mpeg/mpg/vob) 
Mpeg 4 container (mp4) 
Mpeg video specific (mpgv/mpv/m1v/m2v) 
Mpeg audio specific (mp2/mp3) 
Windows Media (asf/wma/wmv) 
Quicktime (qt/mov) 
Real (rm/rmvb/ra) 
DVD-Video (ifo) 
AC3 (ac3) 
DTS (dts) 
AAC (aac) 
Monkey's Audio (ape/mac)
</td>
<td>
Flac (flac) 
CDXA, like Video-CD (dat) 
Apple/SGI (aiff/aifc) 
Sun/NeXT (au) 
Amiga IFF/SVX8/SV16 (iff) 
Ensoniq PARIS (paf) 
Sound Designer 2 (sd2) 
Berkeley/IRCAM/CARL (irca) 
SoundFoundry WAVE 64 (w64) 
Matlab (mat) 
Portable Voice format (pvf) 
FastTracker2 Extanded (xi) 
Midi Sample dump Format (sds) 
Audio Visual Research (avr) 
</td>
</tr>
</table>

[source -- MediaInfo official website](https://mediaarea.net/en/MediaInfo)
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# All parts of a file

- **General**: Title, author, director, album, track number, date, duration
- **Video**: codec, aspect ratio, framerate, bitrate
- **Audio**: codec, sample rate, channels, language, bitrate
- **Text**: subtitle language
- **Chapters**: numbers of chapters, list of chapters

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# Data display

- Container: format, profile, commercial name of the format, duration, overall bit rate, writing application and library, title, author, director, album, track number, date, duration, et cetera
- Video: format, codec id, aspect, frame rate, bit rate, color space, chroma subsampling, bit depth, scan type, scan order, et cetera
- Audio: format, codec id, sample rate, channels, bit depth, language, bit rate, et cetera
- Text: format, codec id, language of subtitle, et cetera
- Chapters: count of chapters, list of chapters, et cetera

[source -- MediaInfo official website](https://mediaarea.net/en/MediaInfo)
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# Format analysis

- Container: MPEG-4, QuickTime, Matroska, AVI, MPEG-PS (including unprotected DVD), MPEG-TS (including unprotected Blu-ray), MXF, GXF, LXF, WMV, FLV, Real, et cetera
- Tags: Id3v1, Id3v2, Vorbis comments, APE tags, et cetera
- Video: MPEG-1/2 Video, H.263, MPEG-4 Visual (including DivX, XviD), H.264/AVC, H.265/HEVC, FFV1, et cetera
- Audio: MPEG Audio (including MP3), AC3, DTS, AAC, Dolby E, AES3, FLAC, et cetera
- Subtitles: CEA-608, CEA-708, DTVCC, SCTE-20, SCTE-128, ATSC/53, CDP, DVB Subtitle, Teletext, SRT, SSA, ASS, SAMI, et cetera
- Metadata: Container-specific, Ancillary data, Time codes (MXF, GXF, QuickTime), Bar data, AFD, AS-11/DPP, RDD18/EBU Tech 3349 Acquisition Metadata, et cetera

[source -- MediaInfo official website](https://mediaarea.net/en/MediaInfo)
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# Versatile

Input formats: 
 
- Files (local/network)
- FTP/FTPS/SFTP
- HTTP/HTTPS (including Amazon S3)
- Direct memory access

Export formats:

- Flat text
- XML
- EBUCore (1.5/1.6)
- PBCore (1.2/2.0/2.1)
- MPEG-7
- FIMS (1.1/1.2)

[source -- MediaInfo official website](https://mediaarea.net/en/MediaInfo)

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# Works everywhere

Works on all popular operating systems: Windows, macOS, and major Linux flavors (Ubuntu, Mint, RHEL/CentOS, Fedora,
SuSE, Solaris, maybe more). And if not, binaries are available and the sourcecode is online.

Downloads page: [https://mediaarea.net/en/MediaInfo/Download](https://mediaarea.net/en/MediaInfo/Download)

Can also be downloaded via Homebrew or Linxubrew.

Available as a command line interface, graphical user interface, or API/library.

Bindings are available C, C++, C#/Mono, VB.net, Python, Java, JavaScript, Ruby, and probably more.

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# Here's the GUI!

.center[![mediainfo](/img/mediainfo-gui.png)]

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# Open source

MediaInfo is open source under a [BSD-2-Clause](https://mediaarea.net/en/MediaInfo/License) License. It can be used or modified, and re-used in open source or closed source software. 
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# Microservice

MediaInfo is easily integrated as a microservice into workflows, and can easily be wrapped in a simple script as an automated service.

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# Easy to use
 
It's as easy as `mediainfo file.mkv`!

And much more. See `mediainfo -h` for the manpage.

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# Example - General stream

```
General  
Unique ID                                : 216146348446563005301353248875103189802 (0xA29C45C1884826066521D86C6288FB2A)  
Complete name                            : new_file.mkv  
Format                                   : Matroska  
Format version                           : Version 4 / Version 2  
File size                                : 1.16 MiB  
Duration                                 : 10 s 0 ms  
Overall bit rate                         : 977 kb/s  
Writing application                      : Lavf57.83.100  
Writing library                          : Lavf57.83.100  
ErrorDetectionType                       : Per level 1  
```

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# Example -- Video stream

```
Video  
ID                                       : 1  
Format                                   : FFV1  
Format version                           : Version 0  
Codec ID                                 : V_MS/VFW/FOURCC / FFV1  
Duration                                 : 10 s 0 ms  
Width                                    : 720 pixels  
Height                                   : 576 pixels  
Display aspect ratio                     : 5:4  
Frame rate mode                          : Constant  
Frame rate                               : 25.000 FPS  
Standard                                 : PAL  
Color space                              : YUV  
Chroma subsampling                       : 4:2:0  
Bit depth                                : 8 bits  
Compression mode                         : Lossless  
Writing library                          : Lavc57.107.100 ffv1  
Default                                  : Yes  
Forced                                   : No  
DURATION                                 : 00:00:10.000000000  
coder_type                               : Golomb Rice  
```

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# Example -- Audio stream

```
Audio  
ID                                       : 2  
Format                                   : PCM  
Codec ID                                 : A_PCM/INT/LIT  
Duration                                 : 10 s 0 ms  
Bit rate mode                            : Constant  
Channel(s)                               : 1 channel  
Sampling rate                            : 48.0 kHz  
Bit depth                                : 16 bits  
Writing library                          : Lavc57.107.100 pcm_s16le  
Default                                  : Yes  
Forced                                   : No  
DURATION                                 : 00:00:10.000000000

```
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# More?

If the above results still aren't enough for you, you can use the `-f` flag. `f` is short for FULL!

`mediainfo -f new_file.mkv`

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# Export options

By default, MediaInfo displays results in text format on screen. But other formats can be specified, like HTML, XML, PBCore, EBUCore, or PBCore 2.1.

Like this:

`mediainfo --Output=XML new_file.mkv`

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# MediaTrace

MediaTrace is a way to get binary analysis of files. It can be accessed via MediaInfo like this:

`mediainfo --Details=1 new_file.mkv`

Just like MediaInfo, by default, it exports as text. You can specify XML with the `--Output=XML` flag.

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# MediaInfoOnline

If your computer has permission restrictions or you cannot install software on it for other reasons, you can still test and use MediaInfo using a browser-based version: [https://mediaarea.net/MediaInfoOnline](https://mediaarea.net/MediaInfoOnline)

![mediainfo](/img/mi-online.png)

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# Testing

Do you need a test file? You can make one with FFmpeg:

`ffmpeg -f lavfi -i smptebars=size=720x576:rate=25 -f lavfi -i "sine=frequency=1000:sample_rate=48000" -c:a pcm_s16le -t 10 -c:v v210 new_file.mov`

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# Additional Resources

- [MediaInfo official website](https://mediaarea.net/en/MediaInfo)

### Similar tools

- [FFprobe](http://www.ffmpeg.org/ffprobe.html)
- [Exiftool](http://owl.phy.queensu.ca/~phil/exiftool/)

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# Learning more

- [FFprobe](/presentations/ffprobe.html)   
- [MediaConch](/presentations/mediaconch.html)

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