Yes, you can upload a video to Facebook. To do this, you can go to your Facebook profile or page, click on the "Photo/Video" button, and then select the video file you want to upload from your computer. You can also add a title, description, and tags to your video before posting it. Keep in mind that there are certain file size and format requirements for uploading videos to Facebook. **

To avoid uploading your Facebook contacts, you can go to the "Settings & Privacy" section of your Facebook account. From there, select "Settings" and then click on "Privacy Settings." Next, go to "How People Can Find and Contact You" and then click on "Who can look you up using the phone number you provided?" Here, you can select "Friends" or "Only me" to prevent Facebook from uploading your contacts. Additionally, you can also go to the "Manage Invites and Imported Contacts" section and remove any contacts that have been uploaded. **

There could be several reasons why you are unable to upload pictures on Facebook. It could be due to a poor internet connection, a temporary issue with Facebook's servers, or a problem with your device or browser. Additionally, there may be restrictions on your account that prevent you from uploading pictures, such as a violation of Facebook's community standards or a temporary suspension. It is recommended to check your internet connection, try uploading from a different device or browser, and review any notifications or messages from Facebook regarding your account. **

To upload Facebook Live videos afterwards, you can save the video to your camera roll or device after ending the live stream. Then, you can go to your Facebook profile or page, click on the "Photo/Video" option, and select the saved video from your device to upload it. Make sure to add a catchy description and relevant tags to reach a wider audience. Finally, you can post the video on your timeline or share it with specific groups or friends. **

To upload Facebook Live videos afterwards, you can save the video to your camera roll or device after the live broadcast ends. Once saved, you can then upload the video to your Facebook page or profile as a regular video post. Alternatively, you can also access the video through your Facebook page's Video Library and share it from there. **

To edit a Facebook thumbnail image, you can first upload the image you want to use as a thumbnail to your Facebook page. Once the image is uploaded, you can click on the "Edit" button and then select "Edit Thumbnail" from the dropdown menu. This will allow you to adjust the position and size of the image to create the desired thumbnail. After making the necessary edits, you can save the changes and the new thumbnail image will be displayed on your Facebook page. **

To upload a PDF file on Facebook, you can create a new post and click on the "Photo/Video" button. Then, select the PDF file from your computer and click "Open" to upload it. You can also use third-party apps or websites that convert PDFs to images, and then upload the image of the PDF to Facebook. Keep in mind that Facebook does not support direct uploading of PDF files, so you may need to use a workaround like converting the PDF to an image. **

To upload a TikTok video to Facebook, you can either save the video to your device and then upload it directly to Facebook, or you can use the TikTok app to share the video to Facebook. To save the video to your device, open the TikTok app, go to the video you want to upload, click on the "Share" button, and then select "Save video." Once the video is saved to your device, you can open the Facebook app or website and upload the video as you would with any other video. Alternatively, you can use the TikTok app to share the video directly to Facebook by clicking on the "Share" button, selecting "Facebook," and then following the prompts to post the video on your Facebook account. **