Comments on: Problems with 5.1 Audio Encodes

By: Krunk

Krunk — Tue, 22 Oct 2013 22:24:00 +0000

In reply to carlosdk. Sorry, we don't have any experience with B&O V1 TV or Twonky. We encode our 5.1 audio with AC3. Your best bet is to send B&O or Twonky a sample video file that you're having audio sync problems with and see if they have any ideas.

By: carlosdk

carlosdk — Tue, 22 Oct 2013 10:18:34 +0000

Hi, I’m having the exact same sync problems on my B&O V1 TV. The audio is in perfect sync using vlc, but it’s a couple of seconds ahead on the TV using Twonky as a mediaserver. I have only experienced this issue with the videos on this site. All of the stereo files I’ve tested from here play fine. Any iIdeas?

Thanks

By: Krunk

Krunk — Thu, 18 Jul 2013 19:09:59 +0000

In reply to Maxi. Each of our movie pages has a Facebook comment section. We list the source in there.

By: Maxi

Maxi — Thu, 18 Jul 2013 12:54:55 +0000

Hey,
thank you. I have read this a while ago but now I’m wondering where the “comments” are? E.g. the new Hobbit trailer or Oblivion, or Man of Steel or Iron Man 3… What is your source for the 5.1 sound? I cannot find a comment on that. I’m just curious, I don’t want to ‘copy’ your site. 😉

By: Krunk

Krunk — Sat, 06 Jul 2013 21:19:01 +0000

In reply to Maxi.

In the comments, I generally list the source of our 5.1 audio trailers.

As for why we re-encode them, there’s a couple reason.

1. First we wanted to lower the filesize to something reasonable. 30Mbps is overkill for 1080p video.

2. The audio/video aren’t always encoded in web/device friendly codecs, so re-encoding them generally helps people.

By: Maxi

Maxi — Sat, 06 Jul 2013 21:14:32 +0000

Hello, I’ve just found your site and I’m wondering where do you take your master files from? Apple Trailers and Yahoo! seem to offer 5.1 audio very rarely. And why do you reencode the video files (other blog post)? I’m just asking out of curiosity.

By: Andrew

Andrew — Fri, 14 Jun 2013 18:57:39 +0000

In reply to Krunk. Works like a charm! Thank you so much!!! Is there any chance you can switch to this method, or generate this type alongside the PC friendly ones? These are all best in a massive home theater anyway!

By: Krunk

Krunk — Wed, 12 Jun 2013 21:32:12 +0000

In reply to Andrew. The 5.1 audio trailers released today are encoded using AC3.

By: Krunk

Krunk — Wed, 05 Jun 2013 06:25:19 +0000

In reply to Andrew. I've just rechecked the 1080p version of both Trailer 1 and International Trailer 1F and the don't really see any audio sync issues. In the past, I've seen A/V sync issues if the cpu isn't able to handle the high quality video. Have you check to see if there's a sync issue in the lower 480p/720p?

By: Andrew

Andrew — Wed, 05 Jun 2013 03:56:05 +0000

In reply to Krunk. Interesting, but I just downloaded the 5.1 Audio version of Pacific Rim Trailer 1 and the audio is out of sync on that one on the PC as well. Same symptom, with audio ahead of the video.

By: Andrew

Andrew — Mon, 03 Jun 2013 19:45:43 +0000

In reply to Krunk. If you put one out I'd be happy to test it for you. :)

By: Krunk

Krunk — Sun, 02 Jun 2013 07:43:51 +0000

In reply to Andrew. Sounds like a problem with the PS3 and AAC 5.1, given that it plays back on the PC w/o issues. I know many devices have problems playing AAC 5.1 and I've been contemplating on switching to AC3 for surround sound which is supported by more devices.

By: Andrew

Andrew — Sun, 02 Jun 2013 00:09:39 +0000

In reply to Krunk. I've downloaded several 5.1 trailers now and they are all having sync issues on PS3, but no sync problems on PC. Delay seems to be ~ 100-200ms, with the audio ahead of the video. Thanks for looking into this. I have an extensive home theater and love running high quality trailers before I begin the movie. Thank you so much for providing these 5.1 trailers. The dynamic range is so much better! I hope we can get this resolved.

By: Krunk

Krunk — Fri, 31 May 2013 10:24:58 +0000

In reply to Andrew. Hmmm. I haven't tried playing the 5.1 audio trailers on the PS3. Are all trailers having A/V sync issues? How much of a delay are you seeing? Are you seeing the A/V sync issues on your computer?

By: Andrew

Andrew — Thu, 30 May 2013 01:52:43 +0000

Admins,
I’ve recently found your site (after Apple download disappeared) and love the fact that you are producing 5.1 trailers. They sound so much better! I am just having an issue with the sound being OOS when playing on the PS3. I am using PS3 Media Server to browse to the trailer, then I copy it to the PS3 for viewing any time.

Is there a better way I should be doing it? Something else I can check?

Thanks so much for your service and your hard work.
Andrew