Yearly Archives: 2018


How we concatenate multiple mp3 files into one using ffmpeg

Recently, we needed to concatenate multiple mp3 files into one. We had at our disposal a machine that had ffmpeg installed.
To perform the merge, we created a list (separated by the character |) of the mp3 files, in the order we wanted them merged and executed the concat operation of ffmpeg to complete our task. Our resulting command was the following

ffmpeg -i "concat:20181021_080743.MP3|20181021_090745.MP3|20181021_100745.MP3" -acodec copy 20181021.mp3

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LibreOffice Calc: Get workbook path only

Get workbook path only

For Linux and Mac

=LEFT(
  CELL("filename"),
  FIND(
    CHAR(1),
    SUBSTITUTE(
      CELL("filename"),
      "/",
      CHAR(1),
      LEN(CELL("filename")) - LEN(
        SUBSTITUTE(
          CELL("filename"),
          "/",
          ""
        )
      )
    )
  ) -1
)&"'"

For Windows

=LEFT(
  CELL("filename"),
  FIND(
    CHAR(1),
    SUBSTITUTE(
      CELL("filename"),
      "\",
      CHAR(1),
      LEN(CELL("filename")) - LEN(
        SUBSTITUTE(
          CELL("filename"),
          "\",
          ""
        )
      )
    )
  ) -1
)&"'"

Bonus

If you want to remove the ' characters as well that are around the filename and path use the following  solution, this will allow you to create hyperlinks for the folders as well

=REPLACE(
  LEFT(
    CELL("filename"),
    FIND(CHAR(1),
      SUBSTITUTE(
        CELL("filename"),
        "/",
        CHAR(1),
        LEN(CELL("filename")) - LEN(
          SUBSTITUTE(
            CELL("filename"),
            "/",
            ""
          )
        )
      )
    ) -1
  )
  ,1,1,""
)

To create hyperlink as well, use the following

=HYPERLINK(
  REPLACE(
    LEFT(
      CELL("filename"),
      FIND(CHAR(1),
        SUBSTITUTE(
          CELL("filename"),
          "/",
          CHAR(1),
          LEN(CELL("filename")) - LEN(
            SUBSTITUTE(
              CELL("filename"),
              "/",
              ""
            )
          )
        )
      ) -1
    )
    ,1,1,""
  )
)

 

 


LibreOffice Calc: Get workbook full path with filename

Get workbook full path with filename

=LEFT(CELL("filename"),FIND("#",CELL("filename"))-1)

Explanation

If you want to get the workbook filename and path, you can do so with a formula that uses the LEFT and the FIND function.

The CELL("filename") function is used to get the full file name and path along with current sheet link:

The result will look like this:

'file:///home/user/path/documentName.ods'#$sheetName

Using the FIND function we find the position of the delimiter # and then using the LEFT function, we extract just the full directory path with the filename. We know the number of characters to extract by locating the the position of the hash # character with FIND and then subtracting 1 (to exclude itself as well).

Extra

If you want to remove the ' characters as well that are around the filename and path use the following solution

=REPLACE(
  LEFT(
    CELL("filename"),
    FIND(
      "#",
      CELL("filename")
    )-2
  ), 1, 1,""
)