Why is There An Audio Delay on WhatsApp?

Why is There An Audio Delay on WhatsApp?

Many users have been reporting audio delays in videos that they send to people on WhatsApp. Some other users also report audio and video out of sync on their statuses, voice calls, and audio messages that they send on the WhatsApp platform.

This issue can be frustrating and leave you wondering what you can do to resolve it. Many people have suggested drastic solutions such as uninstalling WhatsApp or resetting the phone to factory settings.

However, you do not need to go to extreme measures to fix the issue of audio delay on WhatsApp. In fact, neither reinstalling WhatsApp nor resetting the phone to the factory setting will fix any of these issues.

In this article, we have researched all the possible reasons why the audio and video on your WhatsApp message may be out of sync and also provided solutions to all the possible scenarios.

Why is Audio Out of Sync on Video Whatsapp?

In this section, we are going to address the issue of audio being out of sync on a video message that you sent to someone on WhatsApp. Please note that this section does not include voice calls or audio messages.

Say you record a video and share it with someone on WhatsApp. When you play back the video, you realize that the audio is not in sync with the video playback. The audio may be faster or behind each video frame. What are the causes, and how do you fix this?

1. WhatsApp Video Compression

The maximum file size allowed for all media, which includes photos, videos, and voice messages to be sent or forwarded through WhatsApp, is 16MB on all platforms.

This means that on WhatsApp mobile, WhatsApp desktop, and WhatsApp web, you can only send 16MB of video file size to another user on WhatsApp.

On most phones, this 16 MB file size limit for videos usually translates to between 90 seconds to 120 seconds of video length.

However, as you may already know, this duration and file size relationship is determined largely by the video quality in which you have recorded the video.

Here’s what we mean. The higher the video quality, the higher the file size for any given duration.

The lower the video quality, the lower the file size for the same duration. So if you record a 3-minute video in low quality, the file size will be much lower than if you record the same 3-minute video in high quality.

Now that you understand this principle, here’s what happens with video compression on WhatsApp.

Say you record a 3-minute video in high quality, which makes it larger than 16 MB. When you try to send the video to someone, WhatsApp will automatically try to compress the video to the allowed limit to enable you to send the video file.

This automatic compression by WhatsApp will cause something called frame distortion, which causes the audio to be out of sync with the video.

Fix – Compress Video With Reliable App

WhatsApp automatic video compression is not reliable and is responsible for most of the cases where the audio is out of sync with the video.

To avoid this, you need to, first of all, compress the video yourself using a reliable mobile app and then send the video to the receiver on WhatsApp.

In our example, we are going to use the Video Compressor app for Android and iOS to compress a video and retain the quality so that you will not have the issue of audio being out of sync with the video.

On Android

1. Go to Play Store and install Video Compress on your phone

2. After installation, launch the Video Compress app and allow permissions to access your phone storage

3. Next, locate the video whose size you want to reduce and click on it

4. You will see several editing options for the video, including compress, trim, crop, speed up, and so on

5. Tap on Compress Video and then select a lower resolution and corresponding lower size

6. When it is done, the video is automatically saved to your phone, and you do not need to perform any further action

On iOS

1. Go to App Store and install Video Compress on your phone

2. Launch Video Compress and select the 2-arrow icon on the screen

3. This will open your phone storage.

4. Then, tap the video whose size you want to reduce and tap on the check mark at the top right of the screen to open the editing screen for the video

5. On the editing screen, you will see the original size of the video and the output size (target size) after compression

6. Use the slider at the bottom of the screen to choose whether you want to compress more or less. If you move the slider to the right, you are compressing less, and you will lose less quality.

7. If you move the slider to the left, you are compressing more, and you will lose more video quality

8. The default is usually set at 50%. All you need to do is move the slider until you see an output size that is closer to WhatsApp recommendations

9. When you arrive at the desired size, tap the download icon at the top right of the screen to begin the compression process

10. When it is done, the video is also saved automatically, and you don’t need to perform any extra action

Please note that if the original video size is very large, you may not be able to compress it to the required 16 MB size limit. This means that WhatsApp will still need to compress the video further when you are uploading it.

However, the compression by WhatsApp will no longer be drastic, eliminating the issue of audio being out of sync with the video.

So when you try to use the video compressor app to compress the video, and you are unable to compress it to 16 MB, do not fret. If you can compress it to about 60 MB, you may go ahead to send the video.

Also, note that this compression issue also applies to WhatsApp video status. If you find that audio is out of sync with video on your WhatsApp status, then go ahead and compress it using the steps provided above to resolve the problem.

2. Bug On WhatsApp

The video size issue and automatic compression by WhatsApp is the main reason for audio being out of sync in videos that you send on WhatsApp.

However, if you find that your video size is within the WhatsApp limit and the audio is still out of sync with the video, then it is possible that a bug has occurred on your WhatsApp app.

As you may already know, bugs cause systems to malfunction. In the case of WhatsApp, a bug on the app may cause a distortion in the audio playback function resulting in audio being out of sync with the video.

This is usually a result of bad integration between WhatsApp and the audio codec on your phone.

(For a bit of technical explanation, the audio codec is a software application that aids in the compression and decompression of digital audio data stream)

The bottom line is that if your video file size is within the 16MB limit for WhatsApp, then go ahead and try debugging your WhatsApp app using the fixes below:

Fix – Clear the cache

When clearing bugs of this nature on WhatsApp, the first step that you need to take is to clear the WhatsApp cache. For a bit of technical background, an application cache is a memory that stores most of the important personal user data on the application.

If this cache memory gets corrupted or full, it causes the application to malfunction resulting in issues like audio being out of sync with the video. So you need to clear the cache using the steps below:

On Android

1. Long-press the WhatsApp app

2. Select App Info

3. Select Clear Data

4. Select Clear Cache

On iOS

1. Navigate to Settings on your device

2. Select General

3. Select iPhone Storage

4. Select WhatsApp

5. Select the Offload app

6. Confirm the action

7. Select Reinstall app

Fix 2 – Update WhatsApp

If clearing the cache does not resolve the issue of WhatsApp audio being out of sync with the video, then you may need to update your WhatsApp application to fix the bug that may be causing the problem.

Meta is well aware of the issue of audio being out of sync with the video, and they are releasing patches gradually to users across the world to fix this problem.

Therefore, if the problem persists after clearing the cache, then you need to check if there is any update available for WhatsApp on your phone using the steps below:

1. Open the application store on your phone

2. Search for WhatsApp in the search bar and select it from the results

3. If an update is available, you will see Update at the top right of the screen

4. Tap on Update to begin updating WhatsApp

5. When the update is complete, you should see Open at the top right corner this time instead of Update

6. Tap Open to open the WhatsApp app

7. Then, try resending the video to see if the issue of audio being out of sync is resolved

Why Is There An Audio Delay on WhatsApp Calls?

Another issue that users have reported with audio on WhatsApp is a delay or lag during WhatsApp calls. This manifests in the form of your hearing audio much later than the person has spoken or the person hearing audio much later than you have spoken.

We have found many possible causes for this issue, and we will first explore all the explanations and fixes given by WhatsApp below:

1. Poor Internet

The first explanation given by WhatsApp, which we have found to be true on occasion, is that the delay in audio may be caused by poor internet connection on either or both sides of the call.

This means that if your internet connection is poor or the other person’s internet connection is poor, then you may experience a delay or lag in the audio during calls.

You may already know that, unlike standard mobile telephone calls that use radio cell towers to optimize the transmission of voice calls, WhatsApp uses an internet connection exclusively to transmit voice from one end to the other.

As a result, you need to have a strong and steady internet connection to enjoy real-time voice communication on a WhatsApp call.

Therefore, if you experience an audio delay doing your WhatsApp call, you need to check your internet connection and also ask the other person to check their internet connection to fix the issue.

Fix – Restart Internet

If you are experiencing a slow or fluctuating internet connection, restart your connection. If you are using Wi-Fi, you may restart your router. If you are using mobile data, you may turn off the mobile data and then turn it back on.

If the issue is with your internet provider, you may need to contact them for a solution to the poor internet connection.

2. Poorly-optimized Network

Another possible cause of the issue of audio delay during WhatsApp calls, as suggested by WhatsApp, is that your current network may not be properly configured for UDP. UDP stands for User Datagram Protocol.

WhatsApp uses User Datagram Protocol for its calls because the protocol has a high tolerance for data loss and has very low latency, meaning that it ensures that you do not need exceptionally-high bandwidth to complete a WhatsApp call successfully.

However, many internet providers and mobile telecommunication networks configure their networks mostly for TCP instead of UDP. TCP stands for Transmission Control Protocol and has less tolerance for data loss, thereby requiring higher bandwidth to complete calls successfully.

Fix – Switch Networks

If you find that there is nothing wrong with your internet connection in terms of speed, then it is possible that your connection or network is not optimized for UDP connections. When that is the case, WhatsApp advises that you switch networks.

For example, you may switch from a mobile data network to WI-Fi or from Wi-Fi to a mobile data network.

3. Battery Saver Turned On

WhatsApp also suggests that the issue of audio delay during WhatsApp calls may be caused by the battery saver feature on your phone is turned on.

Battery saver helps to reduce energy consumption on your phone by disabling some applications and processes. However, disabling these applications and processes may affect some processes that WhatsApp requires to perform optimally.

Therefore, if you find that there is a delay in your WhatsApp calls and you have confirmed that there is no issue with your network, then turn off the battery saver if it is turned on.

Fix – turn off battery saver

If your battery saver turns on automatically when the battery gets to a certain level, we recommend that you charge your phone at this point.

However, if you have manually turned on the battery saver just to save energy even though the battery level is not low, then turn it off and try making the WhatsApp call again to see if the issue of audio delay is resolved.

4. Bluetooth Turned On

The final suggestion by WhatsApp concerning the issue of audio delay on WhatsApp calls is that Bluetooth may be interfering with the WhatsApp call function.

Although we are yet to confirm this to be technically true, we recommend that you turn off your Bluetooth if you are experiencing audio delay during a WhatsApp call.

If you are using a Bluetooth headset, you may need to disconnect it and try using your phone directly to see if the issue is resolved.

5. WhatsApp Data Saver

WhatsApp has a setting to save data which means that it enables you to use as little data as possible for your calls.

But this will also affect the quality of your WhatsApp calls because there are times when the speed made available by the setting is too low for a successful WhatsApp call, causing the issue of audio delay during the calls.

Fix – Disable Data Saving On WhatsApp

To disable data saving on WhatsApp, follow the steps below:

1. Tap the three dots at the top left or top right corner of your screen, depending on your phone’s OS

2. Select Settings from the menu

3. Tap on Storage and Data

4. And then toggle to turn it off. Use less data for calls

6. Bug on phone

If you have tried all the fixes above and your WhatsApp call audio continues to lag, then it is possible that a bug has occurred on your phone.

When resolving bugs that cause an audio delay in WhatsApp calls, the ultimate fix is to restart the phone entirely and see if it resolves the issue.

Fix – restart the phone

To restart the phone, you did not need to perform a hard restart. A simple restart normally fixes the issue of audio delay on WhatsApp calls. Simply follow the restart process on your phone and then retry making a WhatsApp call to see if it resolves the issue.

Why Is There An Audio Delay on Audio Message?

The issue of audio delay in an audio message on WhatsApp is actually a general phenomenon and is not an error or bug on WhatsApp or on your phone.

The fact is that when you start to record an audio message on WhatsApp, WhatsApp takes about two seconds to initialize the record function and integrate it with your phone microphone.

This is the reason why there is always a delay of about 2 seconds on audio messages on WhatsApp.

Fix – Wait 2 seconds before speaking

As we explained, this is not an error or bug on your phone or on WhatsApp. It is a default setting that you can’t do anything about. The only way to avoid this delay is to wait two seconds before speaking when you start an audio message on WhatsApp.

Brady Klinger-Meyers is an experienced tech writer and marketer who currently writes for Techzillo as well as other popular sites like MakeUseOf. At Techzillo, he focuses on consumer technology in general with his interest being Android OS. Read our Editorial Guidlines and Fact Checking process.


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