Help get this topic noticed by sharing it on Twitter, Facebook, or email.
I’m frustrated

Audio and video out of synchrony

Blu-ray, Blu-ray DL, and AVCHD-DVD disks often have sound and picture out of synchrony. This problem occurs whenever the program lasts longer than an hour and a half. The video gets ahead of the audio by one to ten seconds.
1 person has
this problem
+1
Reply
  • Hi Terry-

    Did you create the discs or are you using purchased discs?

    If you created them, which version of Nero are you using? Does it have all the updates as determined by running the check for updates from the Nero ControlCenter?

    I assume you're playing them back in either the Nero MediaHome or Nero Blu-ray player.
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. indifferent, undecided, unconcerned kidding, amused, unsure, silly sad, anxious, confused, frustrated happy, confident, thankful, excited

  • I’m sadder but wiser.
    I think I might have solved the problem.

    I recently upgraded from Nero 12 Platinum to Nero 2014 Platinum.

    These were Blu-ray, Blu-ray DL, and AVCHD-DVD disks that I created with Nero Video 12 or the new Nero Video 2014.

    I made these from files I created using Hauppauge Computer Works' new HD-PVR 2 model.

    And I believe I found the problem. Which I found after making a new personal Blu-ray from an H.264 rip. That was reliable.

    The problem was the files. Any other activity on my computer, including an update check or a backup, that happens during recording, will adversely affect the recording. The effect is very subtle--Nero Video will not detect it. But the final product will begin with audio and video in synchrony, and then, beyond the time of the corruption, they will get out of synchrony.

    Solutions:

    1. I need to be more careful when I make recordings. And make sure I schedule update checks and backups around them, and never do anything with that computer except to record a program. When I'm making Full HD recordings, they are exquisitely sensitive.

    2. I suggest Nero improve its media analysis routines to detect corrupt files. First prize is they identity the problem and, in the editing screen, mark the segment for trimming. A hard choice, trimming out a key scene in some cases. But otherwise you'll get a coaster worth up to four US dollars, or three euros. That's how much a blank BD-RE DL disk costs on the open market today. Second prize is the routine rejects the file completely and refuses to work with it. Again, better that than to produce an expensive coaster. (If Nero could write something to read a possibly corrupt file and salvage it, that would be even better. But I'd expect to pay as much as two hundred euros or three hundred US dollars for that kind of program.)

    (Note: a coaster, in this context, is a disk that either won't play or will show the kind of annoying defect I've been getting. It refers to the low-tech use to which one might put it.)
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. sad, anxious, confused, frustrated kidding, amused, unsure, silly indifferent, undecided, unconcerned happy, confident, thankful, excited

  • The reason I asked those specific questions is because either v11 or v12 had a problem with that. I think I've even seen a couple of instances of this with v14 in other threads. However, most synch problems are caused by dropped frames in the original files that aren't noticed usually during their playback. This is highly unlikely in commercial discs.

    To determine if the problem is in the original files, I usually recommend that a person try recoding the files in Recode and then try using the recoded files to create a disc. If that doesn't work, I usually recommend trying something like TsRemuxeR.

    In general, I wouldn't think that other activity on your system would cause this unless your system is severely resource limited.
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. sad, anxious, confused, frustrated kidding, amused, unsure, silly indifferent, undecided, unconcerned happy, confident, thankful, excited

  • I'll go with version 14.

    Open Recode and select Import File.

    Select Mpeg-4.

    You could select DVD (4.5) if you want or leave the default.

    Specify where you want to save it and the name.

    Click on Ok.

    Click on Start Encoding.

    That's all there is to it.
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. indifferent, undecided, unconcerned kidding, amused, unsure, silly sad, anxious, confused, frustrated happy, confident, thankful, excited

  • I’m excited
    I agree with MPEG-4 for the Blu-ray project. My Hauppauge HD-PVR 2 generates Transfer Stream (TS) files based on the H.264/AC3/MP4 system. At least, it does when I'm recording HD content.

    I'm still recording a few SD programs--mostly reruns of pre-HD-era TV shows. I'm going to use MPEG-2 with those.

    I wouldn't select DVD anyway. Not unless I had only one file and wanted to make a DVD. I'm going to the next level, which is Blu-ray.
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. sad, anxious, confused, frustrated kidding, amused, unsure, silly indifferent, undecided, unconcerned happy, confident, thankful, excited

  • That's up to you. All that setting does is set the size limit for the encoded file.

    Note that the mpeg-4 default setting is AVC/H.264. You can change it if you wish but that's sufficient for blu-ray.
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. indifferent, undecided, unconcerned kidding, amused, unsure, silly sad, anxious, confused, frustrated happy, confident, thankful, excited

  • I’m confident
    Just finished a test project. It starts out on the mark, but after two hours and six minutes, it still gets out of synchrony by about a second or less. Enough to notice at hgh definition.

    Next I'm going to try that with Matroska video. About a year ago I acquired a two-and-a-half-hour Matroska video (AC3/H.264). I was able to transcode that and produce a BD-DL with the sound staying in synchrony from beginning to end. I don't know what it is about Matroska video, but I've already noticed that "media analysis" takes only a second or two, and it seems easier to edit.
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. indifferent, undecided, unconcerned kidding, amused, unsure, silly sad, anxious, confused, frustrated happy, confident, thankful, excited

  • Since recoding seemed to reduce the problem significantly, to me it indicates dropped frames in the original files. I would try tsmuxer.

    Matroska is just a container, sort of like mpeg-4, avi, etc. If the video within has sync problems, I would guess that using it wouldn't help but, I'm not that high tech in regards to these things. Mister_M might have something to say if he sees this.
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. sad, anxious, confused, frustrated kidding, amused, unsure, silly indifferent, undecided, unconcerned happy, confident, thankful, excited

  • I’m unsure
    1
    If the video within the container had the sync problem, that problem would persist in ordinary playback on Windows Media Player, Video Lan Client, or whatever other player you could name that can play the container involved. But this does not happen. Picture and sound stay in synchrony during playback, whether in an outside media player or in Nero Video when editing or adding chapters.

    But when I play the final Blu-ray product, the sound is delayed by up to a second at the end of the program, less so in the middle of the program, and not at all in the beginning.

    My diagnosis: a fault in transcoding, that affects the TS and the MP4 containers, but to which the Matroska container seems immune. Remember: I transcoded a 2.5-hour Matroska video to Blu-ray without a problem.

    The only other possible consideration was that I'm using automatic (fit-to-disc) recording format, which commonly steps the resolution down to 1440x1080 from the 1920x1080 that I recorded it at, and uses a bit rate just enough to fill the disk, typically 22000 bps or slightly higher. But when I made the good Blu-ray from a Matroska video, the only refinement I used was to hold the resolution at 1920x1080 and then use a nice round figure (25000 bps) for a bit rate. I don't see why that should matter.

    Also: video titles less than an hour and a half in length do not seem to be affected.
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. indifferent, undecided, unconcerned kidding, amused, unsure, silly sad, anxious, confused, frustrated happy, confident, thankful, excited

  • 1
    You can address this with tech support by e-mail. I'm just not technically able to give you the answer you deserve. I'll see if I can get Mister_M's attention on this.
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. sad, anxious, confused, frustrated kidding, amused, unsure, silly indifferent, undecided, unconcerned happy, confident, thankful, excited

  • I’m satisfied
    I appreciate that.

    I wish to write back with this insight:

    I have confirmed that Matroska Multimedia Container files are the best files for the Nero programs to work with. I just burnt a Blu-ray disk from a Matroska video, and I had no problems whatsoever.

    So I recommend this: recode to the appropriate Matroska file--video, audio, or 3D--before using Nero Video. That goes double for making a Blu-ray disk at the resolutions and bitrates that are up to Blu-ray standard.
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. sad, anxious, confused, frustrated kidding, amused, unsure, silly indifferent, undecided, unconcerned happy, confident, thankful, excited

  • Mister_M said that he would take a look at this thread tomorrow.
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. indifferent, undecided, unconcerned kidding, amused, unsure, silly sad, anxious, confused, frustrated happy, confident, thankful, excited

  • I’m confident
    Good. Tell him I was using an HP 2009-model desktop with an Intel Core 2 quad processor, with 8 GB of memory and a clock speed of 2.5 GHz.

    Tell him also I used to have similar problems with making DVD's of ordinary SD content (resolution 720x480p, bitrate 5000 Kb/s on average) recorded on MPEG-2 TS files.

    Repeating: Matroska video was the key to solving all my problems with gradual delay of audio. The problem seems to be that, during transcoding, the video is transcoded slightly faster than the audio. Fast enough to produce a delay in the audio of one second every two hours.
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. indifferent, undecided, unconcerned kidding, amused, unsure, silly sad, anxious, confused, frustrated happy, confident, thankful, excited

  • 1
    The assumption, that the asynchronicity would persist, when the error lies in the container, is not quite correct. It depends on the player's error correction algorithm, if sound and picture run simultaneous or not. So, in some players, you won't recognize, if there are asynchronicities, in others you will recognize it. That's not a good indicator for dropped frames or anything else.

    I found out in other forums, that the Hauppauge HD PVR 2 also can cause asynchronicities while capturing video and audio. So. like wither said, it can be some dropped frames that cause the problem, while the encoder of the HD PVR2 is converting the stream to H.264.

    You're right, when you say, you should close other programs while encoding a video. Depending on using the hardware accelerated encoding or not, the PC needs a lot of computing power to do this task because of the more complex encoding algorithms compared to MPEG-2.

    The problem of encoding video files captured with an external device can also be the encoded file itself. Some encoders use variable frames per second which can lead to problems, when converted to a constant fps.

    Make sure you know the fps rate of the source video to use it for your output. The Hauppauge HD PVR 2 encodes either to 1080p30p or 1080p25p (depending on your TV system).

    If you want to have those captures converted to a standard compliant blu-ray disc, you'll have to follow the official blu-ray restrictions:

    Output resolution and frame rates supported by the blu-ray specifications:
    1080p 24p (p = progressive; This means 23,97 fps on NTSC systems and 24 fps on PAL systems with full pictures)
    Here the problem can appear when you encode the captured files to full HD blu-rays with Nero recode directly. The frame rate has to be adjusted during encoding, which can lead to asynchonicities sometimes.

    1080i 60i/50i (i = interlaced; This means you will have a real fps of 29,97 on NTSC and 25 fps on PAL systems.

    If you set the capture output options of your HD PVR 2 to this format, it can be, that the asynchronicity problems will disappear when encoding to blu-ray with Nero Video (given that you choose this format in the recording format options of Nero Video).

    Matroska files can have different packets than MP4 or m2ts, mts and ts. So it's possible, that some video editors can handle those files more easily.

    To your problem with the SD resolution content:
    Did you try to use the smart encoding? If your TS files really are 720x480 MPEG-2 they should be compliant to the DVD specifications and don't have to be recoded again. You can see, if your content is compliant to DVD standards if the smart encoding percentage is 100% in the burn options screen of Nero Video. Make sure, that video and audio have 100% Smart Encoding (or around 97% if you have edited some parts of the video), so that the video will passed through and not encoded again. If there still are asynchronicities you can be sure, that the problem lies within the encoding process of your capture device.
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. sad, anxious, confused, frustrated kidding, amused, unsure, silly indifferent, undecided, unconcerned happy, confident, thankful, excited

  • Thank you for those specifications. I use 1080i 60i with 29.97 fps.

    I have produced two Blu-ray disks from Matroska videos. One I produced from a recode of a .TS from my capture device. The other I obtained years ago from a torrent. And in both cases, I encountered no further asynchronies.

    Nero Recode also allows me to do one thng I couldn't do before: crop any captured video of a letterboxed program.

    One more problem I've had, that I wonder whether Nero's tools can correct: with some files (never from any capture device I've used), the audio has been musically "sharp," by as much as a semitone. (That's the equivalent of Ravel's Bolero playing in the key of C sharp major instead of the C natural major in which Ravel wrote it.) Because I have what is known as "absolute pitch," I find this very annoying. How can I solve that problem?
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. sad, anxious, confused, frustrated kidding, amused, unsure, silly indifferent, undecided, unconcerned happy, confident, thankful, excited

  • In Make Advanced Movie, there are audio effects that you can apply but I don't think they would meet your needs.

    The best place to adjust this is in WaveEditor. However, WaveEditor only accepts audio files. As a result, you would import your video into Nero Video, Make Advanced Movie. Drag the video to the Timeline. Right click on it and select Unlink Video from Audio. Then select Export, Export Audio to file. Export. Import that file into WaveEditor. I'm not sure exactly what to apply. There is Pitch tuning, Pitch Bend, Modulation and other enhancements and tools. After you edit and save, you can then import the saved file back into Nero Video and add it back to the video.
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. indifferent, undecided, unconcerned kidding, amused, unsure, silly sad, anxious, confused, frustrated happy, confident, thankful, excited