Modern player programs allow very wide adjustment of video playback parameters, such as resolution, playback speed, sound volume. But sometimes the limit values of the settings do not allow you to get the desired result. So, a video file may contain an audio track with a very low sound level, as a result of which even the simultaneous setting of the maximum volume in the player and the audio system will not allow you to hear speech well enough. In such cases, you can increase the sound in the movie by processing it in a video editor.
Necessary
Free and freely redistributable video editor VirtualDub 1.9.9. Available for download at virtualdub.org
Instructions
Step 1
Open the video in VirtualDub. Press the keyboard shortcut Ctrl + O, or select "File" and then "Open video file …" from the menu. A file selection dialog will be displayed. Specify the path to the required directory in it, select the file, click on the "Open" button.
Step 2
Activate the copy video stream setting without changing. Select "Video" from the menu and then check the "Direct stream copy" checkbox.
Step 3
Turn on the full audio stream processing mode. Click on the "Audio" item in the menu, and then on the "Full processing mode" item.
Step 4
Increase the sound in the movie. Open the volume change dialog by clicking successively on the "Audio" and "Volume" items in the menu. In the "Audio volume" dialog, set the "Adjust volume of audio channels" switch to on. Move the slider below the switch to the right while controlling the volume increase value displayed next to it. The value is given in decibels and percentages. Click the "OK" button.
Step 5
Adjust the compression settings for the audio stream. Select "Audio" and "Compression" from the menu. The "Select audio compression" dialog will open. The list on the left side of the dialog box lists the audio encoders installed on your computer. Choose one of them. The list on the right side of the dialog will display a list of formats supported by the selected codec. Highlight your preferred format. Click the "OK" button.
Step 6
Save a copy of the video file with the modified audio track. Press the F7 key on your keyboard, or select the "File" and "Save as AVI …" items from the menu. Next, specify the folder to save and the name of the resulting file. Click "Save".
Step 7
Wait for the processing to complete. Status information regarding the saving process will be displayed in the "VirtualDub Status" dialog. After the file has been saved, this dialog will close automatically.
