寻找类似于ffprobe的程序来查询图像

Question

我需要从命令行探测很多图像，看看它们是否会打开。

ffprobe对于多媒体来说是非常出色的，但是谁能引导我在一个类似的过程的方向，我可以用它来处理图像，如果宇宙正在回答我对pdf和文档的祈祷

thanks a lot

Answer 1

我能想到的最接近"ffprobe for images"的东西是ImageMagick: http://www.imagemagick.org/script/identify.php

就像ffprobe一样，除了使用identify。它告诉你诸如大小，格式，编码等的想法

Answer 2

您可以使用file:

$ file rooster.jpg 
rooster.jpg: JPEG image data, EXIF standard 2.21
$ file -b testsrc.png
PNG image data, 320 x 240, 8-bit/color RGB, non-interlaced
$ file insulated_concrete_forms.pdf 
insulated_concrete_forms.pdf : PDF document, version 1.4

Answer 3

还有mediainfo，它在检测媒体文件格式方面做得很好。

$ mediainfo --Output=JSON --Full some.jpg
{
"media": {
"@ref": "/path/to/some.jpg",
"track": [
{
"@type": "General",
"ImageCount": "1",
"FileExtension": "jpg",
"Format": "JPEG",
"FileSize": "816218",
"StreamSize": "0",
"File_Modified_Date": "UTC 2019-01-06 20:25:24",
"File_Modified_Date_Local": "2019-01-06 21:25:24"
},
{
"@type": "Image",
"Format": "JPEG",
"Width": "4050",
"Height": "1350",
"ColorSpace": "YUV",
"ChromaSubsampling": "4:4:4",
"BitDepth": "8",
"Compression_Mode": "Lossy",
"StreamSize": "816218",
"extra": {
"ColorSpace_ICC": "RGB"
}
}
]
}
}

PDF:

$ mediainfo --Output=JSON --Full some.pdf
{
"media": {
"@ref": "/path/to/some.pdf",
"track": [
{
"@type": "General",
"TextCount": "1",
"FileExtension": "pdf",
"Format": "PDF",
"Format_Version": "1.3",
"FileSize": "141415",
"StreamSize": "141415",
"File_Modified_Date": "UTC 2019-01-24 08:50:21",
"File_Modified_Date_Local": "2019-01-24 09:50:21"
},
{
"@type": "Text",
"Format": "PDF"
}
]
}
}

后缀错误的图像文件:

$ mediainfo --Output=JSON --Full i-am-a-jpeg.pdf
{
"media": {
"@ref": "/path/to/i-am-a-jpeg.pdf",
"track": [
{
"@type": "General",
"ImageCount": "1",
"FileExtension": "pdf",
"Format": "JPEG",
"FileSize": "816218",
"StreamSize": "0",
"File_Modified_Date": "UTC 2019-01-06 20:25:24",
"File_Modified_Date_Local": "2019-01-06 21:25:24",
"extra": {
"FileExtension_Invalid": "h3d jpeg jpg jpe jps mpo"
}
},
{
"@type": "Image",
"Format": "JPEG",
"Width": "4050",
"Height": "1350",
"ColorSpace": "YUV",
"ChromaSubsampling": "4:4:4",
"BitDepth": "8",
"Compression_Mode": "Lossy",
"StreamSize": "816218",
"extra": {
"ColorSpace_ICC": "RGB"
}
}
]
}
}