No audio on last 4 frames at DVinfo.net

Anders Storm · September 29th, 2014, 02:06 AM

I have a Canon 5D Mark III and I have noted that the last 4 frames of all my video clips have no audio (audio level is zero). This is independent of resolution, compression and framerate (ALL-I/IPB, 25/50 fps, 720p/1080i). I took my camera to the Canon Service Center. They replied that all Canon dslr's are working this way and that this is not an error but instead more of just the way they work. I'm not satisfied with that answer. What makes me concerned is that when scanning the internet it does not seem like anybody else have experienced this problem.
The problem can be seen with all my available video software i.e Final Cut Pro X, Premiere CS6, Quicktime, VLC ...
Have anybody else experienced this?

Vince Pachiano · September 29th, 2014, 12:08 PM

Perhaps the issue is that your camera records an extra 4 frames of video with each scene, and the audio stops where it is supposed to be. ;-) I know I am being funny, but the end of a scene is so fluid anyways, why not just record an extra half-second and be done with it?

Noa Put · September 29th, 2014, 12:48 PM

My Panasonic gh3 doesn't record audio the first 8 frames of every recording which has been reported by other users, as long as your camera works otherwise I wouldn't worry about it. Those few missing audioframes won't make any difference.

Jon Fairhurst · September 29th, 2014, 01:43 PM

It could be the NLE or playback software. It might not deal with the final packets of audio properly.

Have you tried playback with other decoders or different machines? (Sometimes faulty resources on a machine are shared by multiple apps.)

September 29th, 2014, 02:06 AM	#1
Anders Storm Tourist Join Date: Jun 2014 Location: Sweden Posts: 1	No audio on last 4 frames I have a Canon 5D Mark III and I have noted that the last 4 frames of all my video clips have no audio (audio level is zero). This is independent of resolution, compression and framerate (ALL-I/IPB, 25/50 fps, 720p/1080i). I took my camera to the Canon Service Center. They replied that all Canon dslr's are working this way and that this is not an error but instead more of just the way they work. I'm not satisfied with that answer. What makes me concerned is that when scanning the internet it does not seem like anybody else have experienced this problem. The problem can be seen with all my available video software i.e Final Cut Pro X, Premiere CS6, Quicktime, VLC ... Have anybody else experienced this?

September 29th, 2014, 12:08 PM	#2
Vince Pachiano Major Player Join Date: May 2008 Location: Dayton, OH Posts: 307	Re: No audio on last 4 frames Perhaps the issue is that your camera records an extra 4 frames of video with each scene, and the audio stops where it is supposed to be. ;-) I know I am being funny, but the end of a scene is so fluid anyways, why not just record an extra half-second and be done with it?

September 29th, 2014, 12:48 PM	#3
Noa Put Inner Circle Join Date: Jun 2007 Location: Belgium Posts: 9,509	Re: No audio on last 4 frames My Panasonic gh3 doesn't record audio the first 8 frames of every recording which has been reported by other users, as long as your camera works otherwise I wouldn't worry about it. Those few missing audioframes won't make any difference.

September 29th, 2014, 01:43 PM	#4
Jon Fairhurst Inner Circle Join Date: May 2006 Location: Camas, WA, USA Posts: 5,513	Re: No audio on last 4 frames It could be the NLE or playback software. It might not deal with the final packets of audio properly. Have you tried playback with other decoders or different machines? (Sometimes faulty resources on a machine are shared by multiple apps.) __________________ Jon Fairhurst