From f9ea9b89d81d8e150e35cb57fb8dc02f06d87761 Mon Sep 17 00:00:00 2001 From: geekpi Date: Tue, 23 Jan 2018 09:12:39 +0800 Subject: [PATCH] translated --- ... Create A Video From PDF Files In Linux.md | 91 ------------------- ... Create A Video From PDF Files In Linux.md | 89 ++++++++++++++++++ 2 files changed, 89 insertions(+), 91 deletions(-) delete mode 100644 sources/tech/20171004 How To Create A Video From PDF Files In Linux.md create mode 100644 translated/tech/20171004 How To Create A Video From PDF Files In Linux.md diff --git a/sources/tech/20171004 How To Create A Video From PDF Files In Linux.md b/sources/tech/20171004 How To Create A Video From PDF Files In Linux.md deleted file mode 100644 index 5ecf5da24e..0000000000 --- a/sources/tech/20171004 How To Create A Video From PDF Files In Linux.md +++ /dev/null @@ -1,91 +0,0 @@ -translating---geekpi - -How To Create A Video From PDF Files In Linux -====== -![](https://www.ostechnix.com/wp-content/uploads/2017/10/Video-1-720x340.jpg) - -I have a huge collection of PDF files, mostly Linux tutorials, in my tablet PC. Sometimes I feel too lazy to read them from the tablet. I thought It would be better If I can be able to create a video from PDF files and watch it in a big screen devices like a TV or a Computer. Though I have a little working experience with [**FFMpeg**][1], I am not aware of how to create a movie file using it. After a bit of Google searches, I came up with a good solution. For those who wanted to make a movie file from a set of PDF files, read on. It is not that difficult. - -### Create A Video From PDF Files In Linux - -For this purpose, you need to install **" FFMpeg"** and **" ImageMagick"** software in your system. - -To install FFMpeg, refer the following link. - -Imagemagick is available in the official repositories of most Linux distributions. - -On **Arch Linux** and derivatives such as **Antergos** , **Manjaro Linux** , run the following command to install it. -``` -sudo pacman -S imagemagick -``` - -**Debian, Ubuntu, Linux Mint:** -``` -sudo apt-get install imagemagick -``` - -**Fedora:** -``` -sudo dnf install imagemagick -``` - -**RHEL, CentOS, Scientific Linux:** -``` -sudo yum install imagemagick -``` - -**SUSE, openSUSE:** -``` -sudo zypper install imagemagick -``` - -After installing ffmpeg and imagemagick, convert your PDF file image format such as PNG or JPG like below. -``` -convert -density 400 input.pdf picture.png -``` - -Here, **-density 400** specifies the horizontal resolution of the output image file(s). - -The above command will convert all pages in the given PDF file to PNG format. Each page in the PDF file will be converted into a PNG file and saved in the current directory with file name **picture-1.png** , **picture-2.png** … and so on. It will take a while depending on the number of pages in the input PDF file. - -Once all pages in the PDF converted into PNG format, run the following command to create a video file from the PNG files. -``` -ffmpeg -r 1/10 -i picture-%01d.png -c:v libx264 -r 30 -pix_fmt yuv420p video.mp4 -``` - -Here, - - * **-r 1/10** : Display each image for 10 seconds. - * **-i picture-%01d.png** : Reads all pictures that starts with name **" picture-"**, following with 1 digit (%01d) and ending with **.png**. If the images name comes with 2 digits (I.e picture-10.png, picture11.png etc), use (%02d) in the above command. - * **-c:v libx264** : Output video codec (i.e h264). - * **-r 30** : framerate of output video - * **-pix_fmt yuv420p** : Output video resolution - * **video.mp4** : Output video file with .mp4 format. - - - -Hurrah! The movie file is ready!! You can play it on any devices that supports .mp4 format. Next, I need to find a way to insert a cool music to my video. I hope it won't be difficult either. - -If you wanted it in higher pixel resolution, you don't have to start all over again. Just convert the output video file to any other higher/lower resolution of your choice, say 720p, as shown below. -``` -ffmpeg -i video.mp4 -vf scale=-1:720 video_720p.mp4 -``` - -Please note that creating a video using ffmpeg requires a good configuration PC. While converting videos, ffmpeg will consume most of your system resources. I recommend to do this in high-end system. - -And, that's all for now folks. Hope you find this useful. More good stuffs to come. Stay tuned! - - - --------------------------------------------------------------------------------- - -via: https://www.ostechnix.com/create-video-pdf-files-linux/ - -作者：[SK][a] -译者：[译者ID](https://github.com/译者ID) -校对：[校对者ID](https://github.com/校对者ID) - -本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出 - -[a]:https://www.ostechnix.com/author/sk/ -[1]:https://www.ostechnix.com/20-ffmpeg-commands-beginners/ diff --git a/translated/tech/20171004 How To Create A Video From PDF Files In Linux.md b/translated/tech/20171004 How To Create A Video From PDF Files In Linux.md new file mode 100644 index 0000000000..4242c993af --- /dev/null +++ b/translated/tech/20171004 How To Create A Video From PDF Files In Linux.md @@ -0,0 +1,89 @@ +如何在 Linux 中从 PDF 创建视频 +====== +![](https://www.ostechnix.com/wp-content/uploads/2017/10/Video-1-720x340.jpg) + +我在我的平板电脑中收集了大量的 PDF 文件，其中主要是 Linux 教程。有时候我懒得在平板电脑上看。我认为如果我能够从 PDF 创建视频，并在大屏幕设备（如电视机或计算机）中观看会更好。虽然我对 [**FFMpeg**][1] 有一些经验，但我不知道如何使用它来创建视频。经过一番 Google 搜索，我想出了一个很好的解决方案。对于那些想从一组 PDF 文件制作视频文件的人，请继续阅读。这并不困难。 + +### 在 Linux 中从 PDF 创建视频 + +为此，你需要在系统中安装 **“FFMpeg”** 和 **“ImageMagick”** 。 + +要安装 FFMpeg，请参考以下链接。 + +Imagemagick 可在大多数 Linux 发行版的官方仓库中找到。 + +在 **Arch Linux** 以及 **Antergos** 、**Manjaro Linux** 等衍生产品上，运行以下命令进行安装。 +``` +sudo pacman -S imagemagick +``` + +**Debian、Ubuntu、Linux Mint：** +``` +sudo apt-get install imagemagick +``` + +**Fedora：** +``` +sudo dnf install imagemagick +``` + +**RHEL、CentOS、Scientific Linux：** +``` +sudo yum install imagemagick +``` + +**SUSE、 openSUSE：** +``` +sudo zypper install imagemagick +``` + +在安装 ffmpeg 和 imagemagick 之后，将你的 PDF 文件转换成图像格式，如 PNG 或 JPG，如下所示。 +``` +convert -density 400 input.pdf picture.png +``` + +这里，**-density 400** 指定输出图像的水平分辨率。 + +上面的命令会将指定 PDF 的所有页面转换为 PNG 格式。PDF 中的每个页面都将被转换成 PNG 文件，并保存在当前目录中，文件名为： **picture-1.png**、 **picture-2.png** 等。根据选择的 PDF 的页数，这将需要一些时间。 + +将 PDF 中的所有页面转换为 PNG 格式后，运行以下命令以从 PNG 创建视频文件。 +``` +ffmpeg -r 1/10 -i picture-%01d.png -c:v libx264 -r 30 -pix_fmt yuv420p video.mp4 +``` + +这里： + + * **-r 1/10** ：每张图像显示 10 秒。 + * **-i picture-%01d.png** ：读取以 **“picture-”** 开头，接着是一位数字（％01d），最后以 **.png** 结尾的所有图片。如果图片名称带有2位数字（也就是 picture-10.png、picture11.png 等），在上面的命令中使用（％02d）。 + * **-c:v libx264**：输出的视频编码器（即 h264）。 + * **-r 30** ：输出视频的帧率 + * **-pix_fmt yuv420p**：输出的视频分辨率 + * **video.mp4**：以 .mp4 格式输出视频文件。 + + + +好了，视频文件完成了！你可以在任何支持 .mp4 格式的设备上播放它。接下来，我需要找到一种方法来为我的视频插入一个很酷的音乐。我希望这也不难。 + +如果你想要更高的分辨率，你不必重新开始。只要将输出的视频文件转换为你选择的任何其他更高/更低的分辨率，比如说 720p，如下所示。 +``` +ffmpeg -i video.mp4 -vf scale=-1:720 video_720p.mp4 +``` + +请注意，使用 ffmpeg 创建视频需要一台配置好的 PC。在转换视频时，ffmpeg 会消耗大量系统资源。我建议在高端系统中这样做。 + +就是这些了。希望你觉得这个有帮助。还会有更好的东西。敬请关注！ + + + +-------------------------------------------------------------------------------- + +via: https://www.ostechnix.com/create-video-pdf-files-linux/ + +作者：[SK][a] +译者：[geekpi](https://github.com/geekpi) +校对：[校对者ID](https://github.com/校对者ID) + +本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出 + +[a]:https://www.ostechnix.com/author/sk/ +[1]:https://www.ostechnix.com/20-ffmpeg-commands-beginners/