Cómo convertir de webm a mp4 en mac osx usando la terminal

puedes usar la herramienta en este link:

https://blog.addpipe.com/converting-webm-to-mp4-with-ffmpeg/

 

a mí me funcionó este comando:

ffmpeg -i videoplayback.webm -preset medium videoplayback.mp4

 

 

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Cómo cambiar el hostname en OSX manualmente

Si necesitas cambiar el host en OSX, puedes seguir las siguientes instrucciones:

 

Procedure

Perform the following tasks to change the workstation hostname using the scutil command.

  1. Open a terminal.
  2. Type the following command to change the primary hostname of your Mac:
    This is your fully qualified hostname, for example myMac.domain.com
    sudo scutil –set HostName <new host name>
  3. Type the following command to change the Bonjour hostname of your Mac:
    This is the name usable on the local network, for example myMac.local.
    sudo scutil –set LocalHostName <new host name>
  4. Optional: If you also want to change the computer name, type the following command:
    This is the user-friendly computer name you see in Finder, for example myMac.
    sudo scutil –set ComputerName <new name>
  5. Flush the DNS cache by typing:
    dscacheutil -flushcache
  6. Restart your Mac.

https://knowledge.autodesk.com/support/smoke/learn-explore/caas/sfdcarticles/sfdcarticles/Setting-the-Mac-hostname-or-computer-name-from-the-terminal.html