Fix sample_offset calculation for CMAF muxer (#67)

Author: Qizot

README.md

@@ -12,7 +12,7 @@ The package can be installed by adding `membrane_mp4_plugin` to your list of dep
 ```elixir
 defp deps do
 [
-	{:membrane_mp4_plugin, "~> 0.22.2"}
+	{:membrane_mp4_plugin, "~> 0.22.3"}
 ]
 end
 ```

lib/membrane_mp4/muxer/cmaf.ex

@@ -400,7 +400,7 @@ defmodule Membrane.MP4.Muxer.CMAF do
                   timescale
                 )
                 |> Ratio.trunc(),
-              sample_offset: Ratio.floor((sample.pts - sample.dts) / timescale)
+              sample_offset: Helper.timescalify(sample.pts - sample.dts, timescale)
             }
           end)
 

mix.exs

@@ -1,7 +1,7 @@
 defmodule Membrane.MP4.Plugin.MixProject do
   use Mix.Project
 
-  @version "0.22.2"
+  @version "0.22.3"
   @github_url "https://github.com/membraneframework/membrane_mp4_plugin"
 
   def project do