Answers.Body: <p>The setup that i use for something similar is:</p>
  
  <p><strong>Step 1</strong> - demux</p>
  
  <pre><code>avconv -i in.mts -an -c:a copy video.mkv -c:a copy audio.ac3
  </code></pre>
  
  <p><strong>Step 2</strong> - audio editing</p>
  
  <p>For this i just open my audio.ac3 in Audacity and normalise the sound. At this time it may be a good idea to try to remove the noise. I reencode into Vorbis, but it is up to you what you wish to do. Let's say you save into audio.oga</p>
  
  <p><strong>Step 3</strong> - mux</p>
  
  <pre><code>avconv -i video.mkv -i audio.oga -c:v copy -c:a copy out.mkv
  </code></pre>
  
  <p><strong>Notes</strong></p>
  
  <ol>
  <li>Video was getting copied all the time. So no quality loss is possible from that.</li>
  <li>You can drop the video demuxing, and just grab it directly from the original in the third step. But i find it just makes the process much cleaner when you know where everything is.</li>
  </ol>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2014-07-17T16:11:34.163Z
Answers.LastActivityDate: 2014-07-17T16:11:34.163Z
Answers.UserDisplayName: v010dya
Body: <p>I need just increase sound of my MTS video. But I'm very afraid to lose the quality of video because it is classical music and intonation is very important.</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-07-08T06:24:44.560Z
Comments.Text: Is it sound that you can pull from another source, simply gaining up the sound will likely have noise floor problems if it is too low.  You can demux the audio from the video and then boost and re-encode only the audio.
Comments.UserDisplayName: AJ Henderson
Tags: <audio>
Title: What is the best tool to increase sound of MTS video without need to re-encoding this video?
UserDisplayName: Light Harut
ThreadText: # What is the best tool to increase sound of MTS video without need to re-encoding this video?
  
  (Asked by: username_0 on 2014-07-08)
  
  I need just increase sound of my MTS video. But I'm very afraid to lose the quality of video because it is classical music and intonation is very important.
  
  **Tags:** audio
  
  > **Comments:**
  > **username_1**: Is it sound that you can pull from another source, simply gaining up the sound will likely have noise floor problems if it is too low.  You can demux the audio from the video and then boost and re-encode only the audio.  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_2 on 2014-07-17. Score: 1
  
  The setup that i use for something similar is:
  
  **Step 1** - demux
  
  ```
  avconv -i in.mts -an -c:a copy video.mkv -c:a copy audio.ac3
  
  ```
  
  **Step 2** - audio editing
  
  For this i just open my audio.ac3 in Audacity and normalise the sound. At this time it may be a good idea to try to remove the noise. I reencode into Vorbis, but it is up to you what you wish to do. Let's say you save into audio.oga
  
  **Step 3** - mux
  
  ```
  avconv -i video.mkv -i audio.oga -c:v copy -c:a copy out.mkv
  
  ```
  
  **Notes**
  
  1. Video was getting copied all the time. So no quality loss is possible from that.
  2. You can drop the video demuxing, and just grab it directly from the original in the third step. But i find it just makes the process much cleaner when you know where everything is.
  
  
  ---
  
  