I cant play movies via usb on my emerson tv

You have to be specific first about what model your phone and TV is.

But to get you started, your TV has to be able to support casting. Typically almost every Smart TV is capable of this. But if your TV isn't one, I suggest you buy a Chromecast or Miracast and hook it up to your TV via HDMI, and just follow the instructions shown on the screen once you hooked it up.

This USB slot only supports Music (MP3) and Photo (JPG) multimedia files playback.
from user manual page 13

suggest getting a media player and plug into hdmi port
if other devices using the one hdmi then get a hdmi switch box.

https://www.electronicshub.org/best-usb-media-players/

or chrome cast device via a laptop/ wi fi to the tv via hdmi

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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.

your owners manual will tell you what formats , audio and video codecs will be acceptable to the TV. Your usb memory stick file (avi, mp4,mkv, may play on your pc but not on the TV. Find a video file convertor program to fix your issue

this tv will only play mp4 video (MPEG-4) ONLY AND DOES NOT PLAY THE H.264 MP4 FILETYPE EITHER...ONLY TRUE MP4, BEST BET IS TO GRAB YOUTUBEDOWNLOADER (IT'S FREE) AND USE THE CONVERSION FEATURE TO CONVERT YOUR MOVIES TO THE IPAD VIDEO SETTING WITH SAME QUALITY AS ORIGINAL SELECTED...CONVERSION TAKES 30 SECONDS...BEST 100% GUARANTEED TO WORK ANSWER..I KNOW...I HAVE ONE CONNECTED TO MY 4TB HARD DRIVE.

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/

Hi.

In short the answer is no. If your computer has an HDMI port then you can connect it to the TV. If the TV supports a PC (VGA) connection then again you can but you will need a seperate audio lead to go with that.
You cannot stream audio/video via USB from the computer.

Regards.

You have not mentioned the TV model #.. If your TV does not play avi. files I am sorry to tell you it does not support moving pictures -- it only supports MP3 music files and JPEG picture files !!. Try these two to confirm.

Hello.

In many cases by connecting the DVD via a scart cable (depending in what country you live in if your system supports it)
the dvd will send a signal to the TV to switch over to RGB mode when you start playing the dvd. Rember to make sure the scart connectors are firmly pressed into their sockets on both tv and dvd.

Also if you found out how to switch channels directly on the TV try to go through them ...you might find the AV channel that will show the picture from your dvd.

Hope this will help you.

Good Luck.