Video-Editing-using-Blender/C2/Match-and-Align-Video-and-Audio/English
Visual Cue | Narration |
Slide Number 1
Title Slide |
Welcome to the spoken tutorial on Match and Align Video and Audio. |
Slide Number 2
Learning Objectives |
In this tutorial, we will learn to,
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Slide Number 3
Learning Objectives |
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Slide Number 4
System and Software Requirement |
To record this tutorial, I am using
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Slide Number 5
Pre-requisites |
To follow this tutorial, * Learner must be familiar with the Blender interface.
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Slide Number 6
Code Files |
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Show opened blender interface. | I have already opened the Blender interface. |
Click on File, Open. | Click on File, Open to open the saved Blender project. |
From the Videos folder, choose the align.blend project file. | I have saved the input file in the Videos folder.
From the Videos folder, choose the align.blend project file. |
Click on Open. | Click on Open to open the project. |
Cursor next to the audio track. | The project has audio and video tracks. |
Cursor on the audio track. | I will delete the existing audio tracks and add a new audio clip to the project. |
Left click on any clip in the audio channel. | Let’s select all the audio clips in the audio channel.
For this, first left click on any audio clip in the audio channel. |
Adjust the zoom level as needed. | Use the mouse scroll wheel to adjust to desired zoom level. |
Adjust the bottom scroll bar left right to adjust field of view. | Move the scroll bar at the bottom to adjust the field of view. |
Go to Select, Channel and select Both Sides. | Go to Select, Channel and select Both Sides.
Now all the audio clips in the channel gets selected. |
Press the Delete key. | Press the Delete key to delete the audio clips. |
Click on the File Browser panel and show the options. | In the File explorer seen on the top left, go to the videos directory.
If you do not see the file browser, click on the folder icon to navigate. |
Click on View in the File Browser panel and show the options. | To adjust or change the style, use the options under the View menu as seen here.
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In the file browser seen on top left, go to the videos directory. | I have an audio file in the videos folder. |
Click on the filter funnel icon in the file browser. | If the audio file is not seen, click on the filter funnel icon in the file browser. |
Check the box for the Sound files. | Check the box for the Sound files as seen here.
Then audio files will also become visible in the File Browser. |
Select audio.ogg file. | Select the audio.ogg file and add it to the sequencer panel. |
Select the file, hold, drag and drop below the video channel. | For this, hold, drag and drop it below the video channel. |
Move the audio clip to match the starting to the video track. | I will adjust to match the starting position of the video track as seen here. |
Cursor on audio strip.
Add text, ( View, Waveform displaying, Waveform on). If the audio waveform is not visible, display it. | |
Cursor on the no signal region in the audio. | The regions without waveform signal, does not have audio in them.
Learner may use them as guides while editing. |
Cursor on the video and audio track. | We will match the video and align them. |
Cursor to show between 20-50 seconds. | Pause the tutorial video and do the following.
Play the clip in blender from 20-50 seconds. |
Cursor on the interface. | Notice the repeated audio, misaligned audio and regions in video to be deleted. |
Zoom into the video strip at 24-30 second region. | Zoom into the strips around the 25-30 second region. |
I have repeated the open the blender interface line twice here. | |
Play the region between 24-30 seconds | Let’s trim the repeated region in video and audio. |
Place the playhead around 28 seconds. | Place the playhead around 28 seconds. |
Select both audio and video clips. | Select both audio and video clips. |
Press K. | Press the K key to cut the clips.
This is a soft cut. |
Select the left side video clip.
Hold left handle. Trim to 25 second mark. |
Select the video clip on the left side.
Hold the right handle and drag to trim the video to 25 second mark. |
Select the audio clip.
Trim to 25 seconds mark. |
Select the audio clip and trim to 25 seconds mark as well. |
Move the playhead from 34-40 seconds. | Let’s move the playhead from 34-40 seconds.
Notice, the 35-38 second region in the video needs correction. |
Cursor in the region. | I will delete this part, instead of trimming it. |
Place the playhead at 42 seconds, select both clips and press K. | Place the playhead at 42 seconds.
Select both clips and press K. Now both the clips are cut. |
Select the audio clip. | Let’s select the audio clip. |
Next, Place the playhead at 35 seconds mark and Press K. | Place the playhead at 35 second mark and Press K. |
Pause the tutorial video and play the video from 42 seconds. | |
Cursor on the 38-45 second region in audio. | The audio from 32-45 seconds need to be at 46-51 seconds. |
Cursor at 46-51 seconds region in audio. | The audio from 46-51 seconds have to placed at 35 seconds. |
Let’s cut, swap and align the audio. | |
Cut audio at 45 seconds and at 51 seconds. | Select the audio clip and make cuts at 45 seconds. |
Hover mouse over the channels. | To move the audio around comfortably, I will use more channels. |
Select the left audio Strip. | To move a clip, select it first.
Select the left audio clip. |
Move it to the channel above the video clip to the right. | Move it to the channel above the video clip to the right.
Click, hold, drag and drop it, in the desired location. |
Let’s position it approximately now. | |
In the Strip tab, go to the Time section. | You may also change the channel using the Property panel or Sidebar.
In the Strip tab, go to the Time section. |
Click twice on the arrow on the left to show the options in the Time section. | If the options are not seen, click on the arrow on the left. |
Click twice on the arrow on the left of Time.
Cursor on Channel. |
Notice the channel number. |
Cursor on the form, for Channel. | Enter the desired channel number in the form, to move the media strip. |
Move the right side clip to the left. | I will move the right side clip to the left. |
move the audio in the top channel back to the audio channel. | I will also move the audio in the top channel as seen here.
Now it is back in channel number 1. |
Go to the Strip tab. | We can also mute clips.
To mute a clip, go to the Strip tab. |
Uncheck the box next to file name. | Notice the check box next to the file name.
Uncheck the box to mute the clip. |
Cursor to show the clip color change. | Notice the color change to grey when the clip is muted. |
Check the box next to the file name to show the clip. | I will now unmute the clip. |
Let’s scroll further to see if the audio and video are aligned. | |
Playhead at the end of the sentence. | At 38 seconds, the video cue changed.
I want the video frame to change only at the end of the sentence. |
Press Shift+K when the frame change. | Let’s hard cut the video at 42 seconds where the frame changes. |
Select the video clip on the right side.
Trim till 44 seconds, using the left handle. |
Select the video clip on the right side.
Click on it’s left handle and trim till the end of the audio gap as seen here. |
Select the clip in the left of the gap. | Select the clip in the left of the gap. |
Hold the right handle and move over the gap. | Hold the right handle and move over the gap. |
Cursor on the sequencer panel. | Pause this video and do the following.
Play the video completely and note down any changes you may desire. |
Cursor on the preview panel. | Complete any further change you want.
You can also save any frame of the video to an image file. |
click on Render, Render image. | To save a frame click on Render, Render image option. |
Click on Image, Save as to open the dialog box. | The Render window opens and the frame can be seen.
Click on Image, Save as to open the Blender File View dialog box. |
Click open the options for File format and choose PNG. | Click open the options for File format on the right side and choose PNG. |
Cursor on RGB and compression parameter. | The output is set to RGBA to obtain a color image output.
I will retain the rest of the defaults. |
Choose Videos folder to save the file. | I will choose the Videos folder to save the file. |
Type output filename as frame.png.
Click on Save As Image. |
Give the output filename as frame.png.
Click on Save As Image to save the frame. |
Close the render window. | Close the render window.
Save the project, render to an output file and quit Blender. |
Slide Number 7
Shortcut keys Render Image F12 Render animation Ctrl+F12 Move strip to left Alt+Left arrow Move strip to right Alt+Right arrow Select all A |
Knowledge of shortcut keys are very useful.
Few shortcuts are shown here. Please study them. |
Slide Number 8
Summary |
Now let's summarize. In this tutorial, we,
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Slide Number 9
Summary |
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Slide Number 10
Assignment |
For assignment activity, please do the following.
Using a video of your choice video or with the align.webm video provided,
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Slide Number 11
Spoken Tutorial Project |
The video at the following link summarises the Spoken Tutorial Project.
Please download and watch it. |
Slide Number 12
Spoken Tutorial workshops |
The Spoken Tutorial Project team:
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Slide Number 13
Forum for specific questions: |
Please post your timed queries in this forum. |
Slide Number 14
Acknowledgement |
Spoken Tutorial Project is funded by MHRD, Government of India.
More information on this mission is available at this link. |
This is Rani from IIT Bombay. Thank you for joining. |