Video and sound slightly out of sync when screen mirroring

When I start screen mirroring and play a video, then my macbook screen matches perfectly with the sound output from my stereo, but my tv is slightly delayed compared to my macbook which makes the sound and video out of sync. it is something like 1/10th or 1/20th a second, but it is extremely annoying.
Anyone has the same problem or knows how to solve this?

What format were the original items ?
What frame rate are they in the original ?
What format are they on the AppleTV (H264 video AAC audio is the most common, but there are others) ?
What is the video frame rate now ?
Most out of syncs come from an imperfect attempt to encode for AppleTV. ie. DVD frame rate is 29.97fps. Many encode this to 30fps. So the movie plays 0.1% too fast, too little for you to notice, but at the end of a 100 minute film, the audio is 6 seconds out of sync with the video. Or 3 seconds on a 45 minute TV show.
Also check the source. I'd had DVDs (Alien Resurrection) jump 10 seconds out of sync in the middle of the movie. Back to the shop for that one.

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Tipo: Película MPEG
Tamaño de archivo: 667,7 MB
Tamaño de la imagen: 720 x 480
Profundidad en píxeles: 32
Velocidad de fotograma: 29,97
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The picture and sound my Apple TV are out of sync by several seconds. THese are on items that have been copied to Apple TV as opposed to streaming from iTunes. Anyone have experience with this? What's the solution?
Thanks.

What format were the original items ?
What frame rate are they in the original ?
What format are they on the AppleTV (H264 video AAC audio is the most common, but there are others) ?
What is the video frame rate now ?
Most out of syncs come from an imperfect attempt to encode for AppleTV. ie. DVD frame rate is 29.97fps. Many encode this to 30fps. So the movie plays 0.1% too fast, too little for you to notice, but at the end of a 100 minute film, the audio is 6 seconds out of sync with the video. Or 3 seconds on a 45 minute TV show.
Also check the source. I'd had DVDs (Alien Resurrection) jump 10 seconds out of sync in the middle of the movie. Back to the shop for that one.

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Skip

I think it is going to be a problem with the fps setting on export. If you entered 30 fps as the setting for export and you found the result had the audio getting further and further ahead of the video the longer you watched it may be that you needed to enter a frame rate of 29.97 fps to keep things in sync. I am doing similar tests on some conversions because I have had sync problems as well. I will repost when I check my current export at 29.97 fps.

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What format were the original items ?
What frame rate are they in the original ?
What format are they on the AppleTV (H264 video AAC audio is the most common, but there are others) ?
What is the video frame rate now ?
Most out of syncs come from an imperfect attempt to encode for AppleTV. ie. DVD frame rate is 29.97fps. Many encode this to 30fps. So the movie plays 0.1% too fast, too little for you to notice, but at the end of a 100 minute film, the audio is 6 seconds out of sync with the video. Or 3 seconds on a 45 minute TV show.
Also check the source. I'd had DVDs (Alien Resurrection) jump 10 seconds out of sync in the middle of the movie. Back to the shop for that one.

N95 Recorded Video: Video and audio is out of sync

Audio and video is out of sync when I play videos recorded with N95 on my PC. If have used different PC applications to play the video, but all exhibit the same problem.
In the beginning of at video it seems that the audio is about 400milliseconds ahead of the video - you hear the sound first. The different in audio and video is not constant. In a long video (30-50minutes) it is quite unpretictable how video and audio is out of sync in the end.
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http://sourceforge.net/projects/mp4cam2avi/
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Firmware version 21.0.0.16.
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28-Mar-2008 09:50 PM
el_loco wrote:
I've seen this issue, but it's not so critical for me. It doesn't happen 100% of the time or in most situations it's very hard to see.
You can edit videos on your PC, just converting them to AVI then using any Video Editor on the PC.
Yes while editing separate the audio channel from the clip and reinsert at the begining of the clip. This will minimise sync issues.To get accurate sync increase the timeline so that you are able to the see audio squiggles as a waveform.
If my post has helped you please click the white star on the right

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Hi,
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I'm currently making a video of an original song for youtube. I've been recording the video in imovie and the audio in garageband. I mixed down the audio in garageband and imported it to imovie. I lined up the audio with the visual at the start of the track, only to find it gradually goes out of sync with the video. I tried a different approach, syncing up the video and audio at the end of the song. I went back to the start of the song to see how in sync it was and the audio started way before I open my mouth! Unfortunately imovie did not record any sound, so I can't use the imovie sound to sync it.
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Video and sound slightly out of sync when screen mirroring

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