Sto scrivendo uno script bash che voglio riecheggiare metadati (lunghezza, risoluzione ecc.) Di un set di video (mp4) in un file.
C'è un modo semplice per ottenere queste informazioni da un file MP4?
Risposte:
Su un sistema basato su Debian (ma presumibilmente, anche altre distribuzioni avranno mediainfonei loro repository):
$ sudo apt-get install mediainfo
$ mediainfo foo.mp4
Ciò produrrà molte informazioni. Per ottenere, ad esempio, lunghezza, risoluzione, codec e dimensioni utilizzare:
$ $ mediainfo "The Blues Brothers.mp4" | grep -E 'Duration|Format |Width|Height' | sort | uniq
Duration : 2h 27mn
Format : AAC
Format : AVC
Format : MPEG-4
Height : 688 pixels
Width : 1 280 pixels
Puoi usare exiftool. Per installarlo eseguire:
sudo apt-get install libimage-exiftool-perl
Quindi per ottenere i metadati dall'esecuzione del file mp4:
exiftool video_file.mp4 > medatata.txt
L'output salvato nel file dovrebbe essere qualcosa del genere:
ExifTool Version Number : 9.60
File Name : video_file.mp4
Directory : .
File Size : 11 MB
File Modification Date/Time : 2014:05:12 21:25:11+03:00
File Access Date/Time : 2014:05:20 23:05:35+03:00
File Inode Change Date/Time : 2014:05:12 21:25:11+03:00
File Permissions : rw-r--r--
File Type : MP4
MIME Type : video/mp4
Major Brand : MP4 v2 [ISO 14496-14]
Minor Version : 0.0.0
Compatible Brands : isom, mp42
Movie Header Version : 0
Create Date : 2014:04:24 05:33:58
Modify Date : 2014:04:24 05:33:58
Time Scale : 600
Duration : 0:03:10
Preferred Rate : 1
Preferred Volume : 100.00%
Preview Time : 0 s
Preview Duration : 0 s
Poster Time : 0 s
Selection Time : 0 s
Selection Duration : 0 s
Current Time : 0 s
Next Track ID : 3
Track Header Version : 0
Track Create Date : 0000:00:00 00:00:00
Track Modify Date : 2014:04:24 05:33:59
Track ID : 1
Track Duration : 0:03:10
Track Layer : 0
Track Volume : 0.00%
Image Width : 450
Image Height : 360
Graphics Mode : srcCopy
Op Color : 0 0 0
Compressor ID : avc1
Source Image Width : 450
Source Image Height : 360
X Resolution : 72
Y Resolution : 72
Bit Depth : 24
Buffer Size : 19318
Max Bitrate : 1059760
Average Bitrate : 396688
Video Frame Rate : 25
Matrix Structure : 1 0 0 0 1 0 0 0 1
Media Header Version : 0
Media Create Date : 2014:04:24 05:33:58
Media Modify Date : 2014:04:24 05:33:59
Media Time Scale : 44100
Media Duration : 0:03:10
Media Language Code : und
Handler Description : IsoMedia File Produced by Google, 5-11-2011
Balance : 0
Audio Format : mp4a
Audio Channels : 2
Audio Bits Per Sample : 16
Audio Sample Rate : 44100
Handler Type : Metadata
Handler Vendor ID : Apple
Google Start Time : 0
Google Track Duration : 191006
Google Source Data : B567F7685HH1399919109001385
Google Ping URL :
Google Ping Message :
Google Host Header : r2---sn-gqn-vhge.googlevideo.com
Movie Data Size : 11755744
Movie Data Offset : 60204
Avg Bitrate : 493 kbps
Image Size : 450x360
Rotation : 0
homebrew install exiftool' and it will be compiled by perl and become available the same way, as exiftool video_file.mp4> medatata.txt`
Puoi farlo con il progetto FFmpeg :
ffprobe 'Breaking The Girl-EVmfXA3vjuE.mp4'Risultato:
Input # 0, mov, mp4, m4a, 3gp, 3g2, mj2, da "Breaking The Girl-EVmfXA3vjuE.mp4":
Metadati:
major_brand: mp42
minor_version: 0
marchi_compatibili: isommp42
creation_time: 2016-10-05T03: 35: 07.000000Z
Durata: 00: 04: 55.38 , inizio: 0.000000, bitrate: 330 kb / s
Stream # 0: 0 (und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p (tv, bt709),
1280x720 [SAR 1: 1 DAR 16: 9], 200 kb / s, 25 fps, 25 tbr, 90k tbn, 50 tbc (impostazione predefinita)
Metadati:
creation_time: 2016-10-05T03: 35: 07.000000Z
handler_name: file multimediale ISO prodotto da Google Inc.
Stream # 0: 1 (und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp,
125 kb / s (impostazione predefinita)
Metadati:
creation_time: 2016-10-05T03: 35: 07.000000Z
handler_name: file multimediale ISO prodotto da Google Inc.