Hi there I have a Sinotec TV. When I play movies on it via USB, the movie shows in a small rectangular box. How do I make it play full screen?

you posted to computer help for TV? why not post to TV?
best , always is RTM read the manual no 2 TV work exactly the same. (nor did tell what you expect of that USB port?)
the post lacks the real and full Sinotec model number on that sticker on the rear, so getting the exact manual proves impossible.
so ill read the first one to you.
quote Page 21 in 1st manual I find on this brand,
TVs are no like Computers in the way USB is more predictable.
TVs love to fail, for wrong for formats. (fat32, or ntfs or?)
My guess's (wild) is a movie file is on a USB memory stick.?
I can put any movie.mkv on my stick plug it in and use it.
it shows up on TV as and INPUT device.

Notes about using USB

= Before using this function, make sure that you select the correct source (USB) and insert a USB storage device on

the TV to view compatible photo, movie and text on the TV screen or play compatible music through the TV.

= If the connected USB HDD does not have an external power source, it may not be detected. Be sure to connect the

external power source.

= To avoid losing the data on your USB device or damaging your USB device, it is recommended that you back up your USB

device data.

= The USB multi media playing menu may vary in different situations.

= If you want to pull out the USB device, please exit USB mode first.

= For instructions on using your USB device, refer to the owner's manual for your USB device.

= Never remove the USB device or turn off the TV while using the USB device. Doing so may result in loss of data and/or

damage to the USB device and/or TV.
= Certain types of USB devices may not be compatible with this TV.
page 21 also shows hitting USB button on remote (lost that?)o
and see photos on a USB or a movie. Photos , movie or text it tells.

here is my wild guess on the model.
https://www.manualslib.com/manual/918457/Sinotec-St-29me70h1.html?page=23#manual


the TV has multimedis player inside, this works for USB.
page 26 covers what movie FILE formats work.
format the usb stick as Fat32 is one safe first guess and try.
good luck with using USB. (the manuals on TV are very very limited on (what it needs to work right)on this TOPIC.
one poster back 2014 this brand
tells. supports fat16/32,and NTFS. and JPG,PMP and PNG photos. and what page 26 tells you,.

Hi my sinotec smart tv doesn't want to play full screen on usb

Can't be done in full screen.

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(12) Search Results

USB Flash Drive Movies on your Flat Screen TV - YouTube

? 4:10
https://www.youtube.com/watch?v=ge4Wo9FQf8w
Oct 5, 2014 - Uploaded by 21NorthMedia
How to watch Movies & Photos from your USB Flash Drive via the USB Port on your Flat Screen TV.

Watch a movie on your TV from a USB drive. - YouTube

? 2:40
https://www.youtube.com/watch?v=jOhvbdVkPaM
Nov 10, 2012 - Uploaded by DIYallday
I'm trying to play movies from my USB port, but when I plug it I can't .... My LG 47" TV will recognize and open the flash drive, but shows empty.

Some TV models have a USB port so that users could play videos and movies from USB on TV. You can try the following steps:

1. Connect your readable and writable USB drive to computer
2. Copy your movies to USB drive and then disconnect your USB drive from computer.
3. Connect the USB device to the Sony TV USB port. Turn on the connected USB device if necessary.
4. Press the HOME button on Sony remote controller to open the menu.
5. Enter the target USD drive.
6. Select the file you want to play back, and then press the play button to start playing movies on TV via USB drive.
It's quite easy to play movies from USB on smart TV devices.

Aspect ratio "zoom"

It sounds like either the TV or the device is trying to do S video instead of composite video.
see if you can change the output type of the media player and make sure that the TV input is not set to S Video.

If the video format of the data in the USB doesn't match to that of the TV's reception, this could happen.
http://electronicshelponline.blogspot.com/

The file format maybe wrong check the device your using to play movies with and see what type of files it plays etc.

Insert a movie and play it automatically
In PowerPoint 2003, you can run your movies full screen. This is a very excellent feature.

• On the Insert menu, point to Movies and Sounds, and then click Movie from File.
• Click the video you want to use and then click OK.
• Tips: Always put the movie in the same folder as your PowerPoint presentation. If you later move the PowerPoint presentation to another computer, copy the movie too. Keeping your movie in the same folder as your presentation ensures the link will still work. However, you should always test the movie on a new machine just to be certain. Re-insert the movie, if necessary.
• After you click OK, you' are promoted with a message asking how you want the movie to start in the slide show.



I recommend choosing Automatically even if you want the movie to play when clicked- I will talk about how to set this part too. (If you choose when clicked you have to click the black box to start the movie. Because I don't like to show the black box on the slide, I do this a little differently.)


• You should now have a small rectangle sitting on your slide.
  
  
  
• Insert a movie using a file on your computer or in another location, such as a server.
• The movie appears as a still frame on your slide.
The trick I use is to move that rectangle off the slide, so it is sitting next to it, but not on it. You can size it down if you like. Click the movie (that is, the rectangle) and then drag it off the slide.


Play the movie full screen

• Right-click the movie object (the small rectangle) and on the shortcut menu, click Edit Movie Object.
• The Movie Options dialog box appears. Under Display Options, select the Zoom to full screen check box, and then click OK.
  
• If you want your movie to play automatically when you advance to this slide, you can stop here.

Test this now to see how it workd by starting the slide show. (On the Slide Show menu, click View Show.) Advance to the slide with the movie, (best if you have the title of the movie on it). Within a couple of seconds, the movie starts to play full screen. When the movie finishes, you return to the same slide (but no unsightly box appears). Click to advance to your next slide.

Add an On Click effect to start the movie
If you prefer, you can click to start the movie. This requires one more step, setting an On Click animation effect.
1. On the Slide Show menu, click Custom Animation. The Custom Animation task pane appears on the right side of the PowerPoint window.

2. Click the movie object (the rectangle) to select it.

3. In the Custom Animation task pane, click Add Effect, point to Entrance and then click Appear.

You have added an On Click effect. The animation effect you added is the one with the Green star next to it and a gray rectangle around it. If it doesn't have a gray rectangle, click it to select it. Your Custom Animation task pane should look like the picture below (except with the name of your movie in the list).


4. The last step is to move that animation up to the top of the effects list.
To do this, make sure the animation effect is selected, and then click the Up Re-order arrow at the bottom of the Custom Animation task pane. Or simply click and drag the animation effect to the top of the effects list.

5. Your effects list should now look like this:


6. You are done. Test this to make sure it works by starting the slide show.
(On the Slide Show menu, click View Show.) When you advance to the slide with the movie, you should not see the movie. When you click the slide, the movie zooms to full screen and plays. When it finishes playing, you are returned to the same slide. Click to advance to the next slide.


Souce: How to insert a Movie (or video) into PowerPoint 2003?