File Extension Library


.H261 File Extension

  • Category: Digital video and movie Files

What is an .H261 file?

.H261 file extension has been classified as Digital video and movie Files.

.H261 is H.261 video format

The h261 file extension is related to the H.261 video format.

H.261 was the original format, used to transmit video over ISDN. H.261 is an early standard for video compression used in telecommunication applications.


How to open:

Use compatible tools to work with *.h261 files.

How to convert:

Compatible tools may be able to export *.h.261 files to other formats.

How to Open .H261 file on different platforms

Open .H261 File on Windows

  • Right-click a .H261
  • Left-click "Open With" > "Choose another app"
  • Select the program that opens .H261 file and Select check box "Always use this app to open .H261 files" Press "Ok"

Open .H261 File on Mac

  • Right-click (or Ctrl + Left-click) the .H261 file
  • Click "Open With" > "Other.."
  • Then choose another program from the app list and press "Open"
  • Select check box "Turn on" for "Always open in app"

Open .H261 File on Linux

Right click on the .H261 file, choose "Open with" and select a program from the list above

Open .H261 File on iPhone

Select a file. If you don't see an application to open the .H261 file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .H261 File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .H261 files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .H261 files

  1. You need to update the application that you normally use to open .H261 files. Only the latest version of the software supports the current .H261 file format
  2. You need to check the .H261 file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)