This script fetches the "teams-for-linux" package and extracts a suitable libffmpeg.so with proprietary media support for use in Vivaldi on older and unsupported distros.

teams-for-linux-ffmpeg.sh

#!/bin/sh -eu

available () {
  command -v "$1" >/dev/null 2>&1
}

# teams-for-linux version 1.0.29 (released 2022-08-19) contains:
# * Electron 20.0.0 (Chromium 104) / FFMpeg version 108069
case "$(uname -m)" in
   x86_64) TEAMS_IMG=IIAJhVGfBhm393UTagoW5awtZlPDGqHd_230.snap ;;
     arm*) TEAMS_IMG=IIAJhVGfBhm393UTagoW5awtZlPDGqHd_231.snap ;;
  aarch64) TEAMS_IMG=IIAJhVGfBhm393UTagoW5awtZlPDGqHd_234.snap ;;
esac

# Set Vivaldi variables
VIVALDI_STREAM="${VIVALDI_STREAM:-stable}"
if [ "$VIVALDI_STREAM" = "stable" ]; then
  VIVALDI_MAJOR_VERSION=5.4
  VIVALDI_INSTALL_DIR="/opt/vivaldi/"
elif [ "$VIVALDI_STREAM" = "snapshot" ]; then
  VIVALDI_MAJOR_VERSION=5.5
  VIVALDI_INSTALL_DIR="/opt/vivaldi-snapshot/"
else
  echo "Unknown stream ($VIVALDI_STREAM); exiting"
  exit 1
fi

# Fetch the teams-for-linux image, if not present
if [ ! -e "$TEAMS_IMG" ]; then
  # Make sure we have wget or curl
  if available wget; then
    DOWNLOAD="wget -O-"
  elif available curl; then
    DOWNLOAD="curl -L"
  else
    echo "Neither Wget nor cURL is installed; aborting" >&2
    exit 1
  fi
  $DOWNLOAD https://api.snapcraft.io/api/v1/snaps/download/$TEAMS_IMG > $TEAMS_IMG
fi

# Try and use unsquashfs if possible, otherwise we can try mounting
if available unsquashfs; then
  if ! unsquashfs -f -d teams-for-linux_root "$TEAMS_IMG" libffmpeg.so 2>&1 1>/dev/null; then
    echo "Failed to extract: $TEAMS_IMG" >&2
    exit 1
  fi
  mv teams-for-linux_root/libffmpeg.so "libffmpeg.so.$VIVALDI_MAJOR_VERSION"
  rmdir teams-for-linux_root
else
  # Note the next free loop device in a variable
  LOOPD="$(losetup -f)"

  # If root, we can mount silently (no popup windows after mount)
  if [ "$USER" = "root" ]; then
    MNTPNT="$(mktemp -d -t teams-for-linux.XXXXXX)"
    losetup -f "$TEAMS_IMG" 2>/dev/null
    mount -o ro "$LOOPD" "$MNTPNT"
  else
    # Associate disk image with a loop device
    udisksctl loop-setup -rf "$TEAMS_IMG"
    sleep 1
    # Mount the disk image if the previous did not do it automatically
    if ! lsblk -lo MOUNTPOINT "$LOOPD" | tail -n1 | grep -q \.; then
      udisksctl mount -b "$LOOPD"
    fi
    # Note the mount point in a variable
    MNTPNT="$(lsblk -lo MOUNTPOINT "$LOOPD" | tail -n1)"
  fi

  # Copy out file
  cp "$MNTPNT/libffmpeg.so" "libffmpeg.so.$VIVALDI_MAJOR_VERSION"

  # Cleanup
  if [ "$USER" = "root" ]; then
    umount "$MNTPNT"
    losetup -d "$LOOPD"
    rmdir "$MNTPNT"
  else
    udisksctl unmount -b "$LOOPD"
    if [ "$LOOPD" != "$(losetup -f)" ]; then
      udisksctl loop-delete -b "$LOOPD"
    fi
  fi
fi

cat <<EOF

Successfully Extracted: libffmpeg.so.$VIVALDI_MAJOR_VERSION

To install for use with Vivaldi ($VIVALDI_STREAM, version $VIVALDI_MAJOR_VERSION) issue the following:

    sudo install -m644 libffmpeg.so.$VIVALDI_MAJOR_VERSION $VIVALDI_INSTALL_DIR

[You will need to Restart Vivaldi ($VIVALDI_STREAM) for it to find the new library.]

EOF

Click on "Raw" (above, to the right), save it, make it executable, then run it.

Alternatively you can run it like so:

sh -e teams-for-linux.sh

Vivaldi Snapshot users can run it as follows instead.

VIVALDI_STREAM=snapshot sh -e teams-for-linux.sh

Thank you for keeping this going, you rock. Working on Mint 18.3.

It took me a while to find another source but I got there in the end. If you are able though you should upgrade your distro as Mint does not support it anymore and hence no security updates 😔

I have updated this to use the "teams-for-linux" snap package instead of the Zulip AppImage, so that it works with Vivaldi stable 5.4.

@figlesias The new version might be useful to you if you have still not upgraded to a distro that is receiving active security updates. Though I recommend you do that instead. 😉