<p>You have to mix both audios, else ffmpeg will pick one from among the inputs.</p>

<p><code>ffmpeg -y -threads 4 -loglevel quiet -ss 0 -t 220.162 -i left.webm 
-ss 0 -t 220.162 -i right.webm -filter_complex "[0]scale=320:-1,pad=2*iw:2*ih:0:120[left];
[1]scale=320:-1[right];[left][right]overlay=main_w/2:120,scale=640:480;[0][1]amix" -shortest output.mp4</code></p>

CC BY-SA 4.0
2019-08-07T07:50:25.173Z
2019-08-07T07:50:25.173Z
Gyan
<p>I was trying to combine two separate video into one side by side using ffmpeg using the following command in ubuntu server.</p>

<pre><code>ffmpeg -y -threads 4 -loglevel quiet -ss 0 -t 220.162 -i left.webm 
-ss 0 -t 220.162 -i right.webm -filter_complex "[0]scale=320:-1,pad=2*iw:2*ih:0:120[left];
[1]scale=320:-1[right];[left][right]overlay=main_w/2:120,scale=640:480" -shortest output.mp4
</code></pre>

<p>The video is processed successfully as expected. But the audio is missing from right.webm. Audio from one video is missing from the output.mp4.
How to fix this issue.</p>

<ffmpeg>
FFMPEG - Audio missing after combining video
Shijin
# FFMPEG - Audio missing after combining video

(Asked by: username_0 on 2019-08-07)

I was trying to combine two separate video into one side by side using ffmpeg using the following command in ubuntu server.
ffmpeg -y -threads 4 -loglevel quiet -ss 0 -t 220.162 -i left.webm 
-ss 0 -t 220.162 -i right.webm -filter_complex "[0]scale=320:-1,pad=2*iw:2*ih:0:120[left];
[1]scale=320:-1[right];[left][right]overlay=main_w/2:120,scale=640:480" -shortest output.mp4

The video is processed successfully as expected. But the audio is missing from right.webm. Audio from one video is missing from the output.mp4.
How to fix this issue.

**Tags:** ffmpeg


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## 1 answers

### Answer by username_1 on 2019-08-07. Score: 1

You have to mix both audios, else ffmpeg will pick one from among the inputs.

`ffmpeg -y -threads 4 -loglevel quiet -ss 0 -t 220.162 -i left.webm
-ss 0 -t 220.162 -i right.webm -filter_complex "[0]scale=320:-1,pad=2*iw:2*ih:0:120[left];
[1]scale=320:-1[right];[left][right]overlay=main_w/2:120,scale=640:480;[0][1]amix" -shortest output.mp4`


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