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The video stream from the USB camera con be E' stato provato ffmpeg per registrare il flusso video di una webcam con questo comando
dove assuming that /dev/video0 e' la is the webcam, se si collega dopo il boot controllare dove viene montatadevice file.
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= Video capture using FFmpeg and Video4Linux =
== Useful links ==
FFmpeg project page: http://ffmpeg.org/
Video4Linux wiki: http://linuxtv.org/wiki/index.php/Main_Page
Video4Linux kernel documentation: http://www.mjmwired.net/kernel/Documentation/video4linux/v4l2-framework.txt
== Configuring the system ==
The FFmpeg tool is not provided with the default NELK root file system. FFmpeg can be added to the root file system:
* installing it as a package, if the root file system features a package manager and ffmpeg is available as a package
In this article, we assume that the use of a root file system built with Buildroot and customized adding the EZSDK components, as described in the [[Creating a RFS with Buildroot]] article. The FFmpeg package can be selected entering the '''Package selection for the target''' menuconfig option (see [[Creating_a_RFS_with_Buildroot#Configuring_Buildroot]]). Before using the Video4Linux framework, it should be enabled in the kernel. The following options must be enabled: * Device Drivers->Multimedia support* Device Drivers->Video For Linux* Device Drivers->Video For Linux->Video capture adapters* Device Drivers->Video For Linux->Video capture adapters->V4L USB devices* Device Drivers->Video For Linux->Video capture adapters->V4L USB devices->USB Video Class (UVC)* Device Drivers->Video For Linux->Video capture adapters->V4L USB devices->UVC input events device support (NEW) [[File:Enabling-v4l-usb.jpeg|600px]] == Performing the capture == The video stream from the USB camera con be captured and saved to the out.avi file using the following command:
<pre>
ffmpeg -f video4linux2 -r 30 -s 640x480 -i /dev/video0 out.avi
</pre>
= Video capture using gstreamer =
This how-to will be reported soon.