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Audio is out of sync!! Seems to device dependant.
Audio is out of sync!! Seems to device dependant.
Aug 23, 2015
Archive Agent wrote
- When recording from a Microsoft Life Studio as the audio source and video source, the audio is ahead.
- When using a different mic the audio can appear to be in sync.
- Then switching to a different camera with same audio source, has the audio behind the video now.
-May also depend on codecs used. Tried WMV, MP4.
Not a system issue as all these combinations work fine with native Windows 8 Camera app.
Please tell me I'm doing something wrong, this is real deal breaker, any fixes for this?
Running SDK 7.14.6.0 used demo app.
mms on May 30, 2013 23:59
- When using a different mic the audio can appear to be in sync.
- Then switching to a different camera with same audio source, has the audio behind the video now.
-May also depend on codecs used. Tried WMV, MP4.
Not a system issue as all these combinations work fine with native Windows 8 Camera app.
Please tell me I'm doing something wrong, this is real deal breaker, any fixes for this?
Running SDK 7.14.6.0 used demo app.
mms on May 30, 2013 23:59
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9 Answers
Aug 23, 2015
Archive Agent
agent
wrote
Roman Minyaylov
Looks like a microphone used problem. System app uses Media Foundation, not DirectShow.
on May 31, 2013 00:04
Looks like a microphone used problem. System app uses Media Foundation, not DirectShow.
on May 31, 2013 00:04
Aug 23, 2015
Archive Agent
agent
wrote
Bart Roozendaal
I have a similar problem. I can't seem to get audio and video in sync. I'm using a MacBook Pro running native Windows 8. Using built in webcam and logitech headset for audio.
on September 09, 2013 18:53
I have a similar problem. I can't seem to get audio and video in sync. I'm using a MacBook Pro running native Windows 8. Using built in webcam and logitech headset for audio.
on September 09, 2013 18:53
Aug 23, 2015
Archive Agent
agent
wrote
Bart Roozendaal
Ps: I also tried the end user product VisioForge Video Recorder, but that unfortunately also produces video/audio which is out of sync. Audio is lagging +-3 seconds behind.
Would be a no brainer to buy if it works well. Is just what I was looking for and everything shows quality. Apart from this problem...
on September 09, 2013 19:05
Ps: I also tried the end user product VisioForge Video Recorder, but that unfortunately also produces video/audio which is out of sync. Audio is lagging +-3 seconds behind.
Would be a no brainer to buy if it works well. Is just what I was looking for and everything shows quality. Apart from this problem...
on September 09, 2013 19:05
Aug 23, 2015
Archive Agent
agent
wrote
Bart Roozendaal
Ps2: running the Video record app under windows 7 does produce correct result *only* if I choose the best quality for audio and for video, saving to wmv. I've downloaded the WinRT SDK and ran that sample. Apart from getting a null reference error if no text effect is added, the results are fine and in sync.
I've tried the 'regular' .Net SDK also on a different machine with top specs, but that too gave audio and video out of sync. Most of times the audio is lagging behind, but I've also see the video lagging behind.
Please help me to resolve this, as it looks like this library is exactly what I'm looking for.
on September 09, 2013 20:20
Ps2: running the Video record app under windows 7 does produce correct result *only* if I choose the best quality for audio and for video, saving to wmv. I've downloaded the WinRT SDK and ran that sample. Apart from getting a null reference error if no text effect is added, the results are fine and in sync.
I've tried the 'regular' .Net SDK also on a different machine with top specs, but that too gave audio and video out of sync. Most of times the audio is lagging behind, but I've also see the video lagging behind.
Please help me to resolve this, as it looks like this library is exactly what I'm looking for.
on September 09, 2013 20:20
Aug 23, 2015
Archive Agent
agent
wrote
Roman Minyaylov
Please tell me used output format in Main Demo of SDK.
on September 10, 2013 11:22
Please tell me used output format in Main Demo of SDK.
on September 10, 2013 11:22
Aug 23, 2015
Archive Agent
agent
wrote
Pieter-Bas IJdens
We tried with .WMV, .AVI and .MP4 format in the main demo SDK. With a WMV recording, the audio is off by half a second. With a 30 second.AVI recording, the audio initially is ahead by about 200ms, but ends up lagging 200ms behind. With the MP4+AAC recording profile, the audio is consistently 150ms ahead of the video stream. When I switch from 720p recording to another format (640x480) also the video is out of sync. It appears to be 1.5 times the regular speed.
I also ran a test using a different camera and a different USB audio input device. This does not seem to make any difference in the result.
When I switched to a non-usb audio source (analogue input), the audio and video ended up being perfectly in sync with both the .MP4 format and the .AVI format. It would be my guess that using USB audio input (on Windows 8) causes us to see A/V synchronization issues.
Is there anything we should do differently, or pay special attention to, when working with USB audio devices?
on September 12, 2013 12:54
We tried with .WMV, .AVI and .MP4 format in the main demo SDK. With a WMV recording, the audio is off by half a second. With a 30 second.AVI recording, the audio initially is ahead by about 200ms, but ends up lagging 200ms behind. With the MP4+AAC recording profile, the audio is consistently 150ms ahead of the video stream. When I switch from 720p recording to another format (640x480) also the video is out of sync. It appears to be 1.5 times the regular speed.
I also ran a test using a different camera and a different USB audio input device. This does not seem to make any difference in the result.
When I switched to a non-usb audio source (analogue input), the audio and video ended up being perfectly in sync with both the .MP4 format and the .AVI format. It would be my guess that using USB audio input (on Windows 8) causes us to see A/V synchronization issues.
Is there anything we should do differently, or pay special attention to, when working with USB audio devices?
on September 12, 2013 12:54
Aug 23, 2015
Archive Agent
agent
wrote
Roman Minyaylov
That specific device problem, most of USB devices worked perfectly.
on September 12, 2013 13:17
That specific device problem, most of USB devices worked perfectly.
on September 12, 2013 13:17
Aug 23, 2015
Archive Agent
agent
wrote
Pieter-Bas IJdens
Is there a list of supported devices that are guaranteed not to have A/V sync issues on Windows 8?
on September 13, 2013 11:53
Is there a list of supported devices that are guaranteed not to have A/V sync issues on Windows 8?
on September 13, 2013 11:53
Aug 23, 2015
Archive Agent
agent
wrote
Roman Minyaylov
Many thousands devices on market, we do not have a list.
on September 13, 2013 12:46
Many thousands devices on market, we do not have a list.
on September 13, 2013 12:46