You have to have something to record your gameplay first.. Maybe a camcorder, HDPVR, or dazzle..
You need a capture card.
I have the macintosh, and that does not happen to me. I think Safari works better with youtube than firefox. Try deleting Safari and Firefox and upload the new versions, that might help.
if your trying to capture a game on your computer use a freeware that videotape your desktop such as camsudio if your trying to capture from tv use a capture card
To upload a blank back of a check image for verification, you can use a scanner or a mobile banking app that allows you to capture and upload images of checks. Make sure the image is clear and includes all necessary details.
To upload film photos to a digital platform, you will need to first digitize the photos by scanning them or using a digital camera to capture them. Once you have digital copies of the photos, you can then upload them to the platform of your choice by following the platform's specific instructions for uploading images.
There should be a yellow button under your name in the right hand corner. It should say "upload". If yo have a webcam, you can do a direct upload, or you can choose from your videos. When you find the right one, double-click it, (or open it) and you can type the description/tags, etc.
you record it with a capture card, upload it to your computer's video editing software (if you have one) and crop.
Honestly, the direct upload from iMovie is not the best thing to do. It is better to export the video file and upload it directly.
You can record gameplay on your Xbox/Ps3 by purchasing a Capture Card or PVR. These devices can cost between $60-300. The process of recording gameplay is more complicated than most people realize. After you purchase a Capture Card (I myself use a HD dazzle) you must install software that can operate it. You also need editing software for effects and uploading videos to the web (i.e Youtube.com) There are video tutorials on the web with instructions on how to setup capture cards and how to properly use them. If you are on a PC the process is much simpler. Install a program like FRAPS and you can record directly off your screen. You still need editing software to upload to the web.
The application Image Capture is used to upload pictures from a Camera or Scanner while connected to a network. You can learn more about this software at the Wikipedia. Once on the page, type "Image Capture" into the search field at the top of the page and press enter to bring up the information.
To make a Vine video on a computer, you can use a screen recording software to capture your video and then upload it to the Vine website or app.