Solution to AVC/H.264 MPEG4 video compression Audio Sync Issue

Been trying to find an solution to this problem for a year now - one would think Adobe would have addressed themselves but....
I have the Xacti E1 camera and it utilizes the AVC/H.264 MPEG4 video compression that both Premier Elements 4 & 7 plus Pro CS4 have sync issues with.
What I did was use Quicktime Pro to convert the Audio ONLY to wave – very fast actually. So basically in Premier I added the original MPEG4 video to the timeline, removed its messed up audio, replaced it with the Quicktime Pro wav file then regroup the wav audio and video to keep it clean.

Sure!
Would be nice if Adobe addressed the problem as this std is used by most flash based video cameras

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H.264 web video loses audio sync and freezes frame in JW media player

Hi,
I am trying to put my H-264 video (.mov) that I compress with Compressor on the web to play in JW media player. The problem is, after 30 seconds of smoothly playing, the video starts to lag, freezes frames and ever since then the audio do not sync with the video anymore (can be as far apart as 10 second). Strangely, this only happens on the longer videos.
I am assuming it has something to do with the compression setting that makes the file is too big and thus create streaming bottlenecking? Maybe I should readjust my parameters?
this is the setting I use:
File Extension: mp4
Estimated file size: 104.3 MB
Audio Encoder
AAC, Mono, 44.100 kHz
Video Encoder
Format: QT
Width: 480
Height: 270
Pixel aspect ratio: Square
Crop: None
Padding: None
Frame rate: (100% of source)
Selected: 29.97
Frame Controls: Automatically selected: Off
Codec Type: H.264
Multi-pass: On, frame reorder: On
Pixel depth: 24
Spatial quality: 75
Min. Spatial quality: 25
Key frame interval: 24
Temporal quality: 50
Min. temporal quality: 25
Average data rate: 0.819 (Mbps)
Thanks,
JD

Thanks for the input. What do you mean by encoding it as H.264 not mp4 - which setting affects that?
Maybe I already has it?
here is what I have now:
Video compression setting
Compression type: H.264
Frame rate: current fps
Key frames: every 24 frames
Frame Reordering: Yes
Compressor quality: High
Encoding: Best Quality (Multi-pass)
Data rate: Restrict to 800 kbits/sec
Optimized for: Download
Sound
Format: AAC
Channels: mono
Rate: 44.1 kHz
Show advanced setting: yes
Render setting:
- quality: normal
MPEG 4 AAC LC Encoder Settings:
- Encoding stratey: Average bit rate
- Target bit rate: 96 kbps
Inspector panel
File format: Quicktime Movie
Extension: mp4
Allow job segmenting: yes
Video setting: Enabled
Audio setting: enabled
Streaming: none

Why does embedded video cause audio sync issues?

Greetings all,
   I have a question that is perhaps best answered by an Adobe developer or someone who knows the SWF file format and various audio/video standards fairly well. When one drags an FLV file into the library in flash authoring tool, a window appears. If you click "Embed FLV in SWF and play on timeline", an awful message appears, "WARNING: Embedded video is likely to cause audio synchronization issues...". My question is: why would there be any audio synchronization issue? Is this really just a bug/unimplemented feature? Or is there some fundamental shortcoming of current versions of the SWF file format that does not allow for the FLV audio/video signals to be properly encoded in the SWF file? Or is it that the flash player plays SWF and FLV data in fundamentally different ways and that even if the audio/video is perfected sync'd in the SWF file, the fact that it's a SWF file causes flash player to lose sync?
   I'm guessing only a Flash developer could answer this (and probably not just any Flash developer!), so if there are any out there, please spare some wisdom for a poor lost SWF surfer.
   Thanks!

Hi:
Welcome to discussions!
From what I am reading, you are trying to use the audio that was in the original video-right? By that, I mean, you haven't added a voice over or music-just using the speaker's voice on the tape.
If so, you might want to try using something like a Fade Out or Fade In instead of one of the transitions that add or subtract to the length of the video
[Quoted from iMovie Help]
Some transitions (for example, Cross Dissolve and Push) shorten your movie by a few seconds, depending on the speed of the transition. For example, if you add a transition with a speed of 2 seconds, iMovie overlaps 2 seconds from the first clip and 2 seconds from the second clip as it renders the transition. This shortens your movie by a total of 2 seconds.
The Overlap transition freezes the last frame of the clip on its left and superimposes it over the next clip. Fade In/Fade Out blackens the last frames of the clip on the left and the first frames of the following clip.
[End quote]
Or you could try extracting the audio from the movie so that you could edit it and sync it that way.
Sue

Adding photos over video? Audio sync issues. :o(

I just started using iMovie HD today. So far so good- but I have run into an issue where I want to add photos over my interview subject (video and audio). I have separated the audio from the video so I can split the movie clip and add the photo... but iMovie isn't removing the extra movie footage so when the photo fades the movie audio doesn't sync with the persons lips. This must be a common issue. How do I fix this so when the photo fades the video underneath is synced with the audio (spoken word). Thanks for any help!!!
PB G4 Mac OS X (10.4.8) I'm a imovie noob. :o)

Hi mistahtea - it sounds as though you are going about it in the wrong way.
Firstly make sure that in iMovie Preferences you have ticked 'Extract Audio when Pasting Over at Playhead'.
Then:
1. Copy the pic you want to superimpose.
2. Position the Playhead where you want the pic to insert.
3. Go Advanced>Paste Over at Playhead.
That should do the trick!

Audio sync issue when exporting to h.264

I've seen this issue reported many times, but can't find an answer, or whether it's simply another bug in Premiere CS5. The same issue happens on more than one computer (PC with Intel i7, 64 bit, GeForce GTX 470, and BlackMagic video card), the video is HDV using Sony Compact flash. Audio sync is fine throughout editing and exporting to standard DVD or h.264 blu-ray using Encore Dynamic link. But when I export directly from premiere to create a flash video or h.264 720p video, the audio moves ahead of the video by about 4 frames. This didn't happen with CS4. There is a similar issue if I export using MPEG2, though the audio error seems less consistent. Have wasted very many hours, and a fix or solution would be welcome! Many thanks.

Having the same issue here. Some kind of solution would make me so happy right now.
I've shot and edited a series of short interviews on a DSLR. So I've started with H.264 files and I'm attempting to export the final product to h.264 and the audio is very noticeably out of sync.
The only workaround I've come up with so far is as follows:
1. Export the audio only from the original sequence
2. Export the video only from the original sequence
3, Start a new sequence and drop in the files I just created.
When I export that sequence, for some reason, it syncs perfectly. Needless to say however, this is a huge inconvenience and time waster, especially when it comes to making further edits.

Playback pauses and audio sync issues with live video stream

I'm seeing playback pauses about every three seconds and audio sync issues with our live demo stream when using the OSMF/Strobe player. It happens on both our 2Mbps 720p stream and our 480p 750Kbps stream so it does not seem to be related to higher resolution/bandwidth streams. It also happens if I point directly to a stream asset or if I point to a .f4v with both streams listed for dynamic so it does not seem to be related to dynamic streaming specifically.
The same live streams play back very well without pauses or audio sync issues in the Akamai's dynamic player and even slightly better with JW 5.2.
I have viewed the OSMF/Strobe playback on three different laptops of various age (3 months to 2 years) and two are Windows and one is Linux. I have also tried the various buffering options on the Flash Media Player Setup and Strobe setup and it has not made a noticeable difference.
To see the stream with the Akamai player, go to: http://live.kulabyte.com
To see the stream with the OSMF/Strobe player, go to: http://live.kulabyte.com/osmf
I do not have JW set up for public viewing yet, but the two above show the distinct difference.
We are really hoping to start pointing our customers towards the OSMF player because of the support provided by the community and Adobe, but we have to get the quality of the playback to be acceptable first.
If someone has ideas on debugging I can PM the actual video assets to you.
Thanks,
Tim

Hi Tim,
You need to add this setting:
dynamicStreamBufferTime=8
The actual value can be higher or lower. The best practice is to use a value that is twice the keyframe distance. Anyway, try different values and see which performs the best for your content.
I know that the setup page does not contain this option and it is not documented in the UserGuide. We simply missed it. Sorry.
Also note that the dynamic buffering algorithms are not being used for dynamic streaming content. I tried to explain this here:
https://sourceforge.net/adobe/smp/wiki/Dynamic%20Buffering/
Looking forward to your confirmation that this solved your issue.
-Andrian

Premiere Pro audio sync issues with 48khz audio on video file and 44.1khz audio on external audio

So, I recorded video and audio on my Canon 5D Mark II at 1080p, 23.976 fps, and 48khz, 16-bit Stereo audio. And I used a Zoom H4 to record an mp3 audio file at 44.1khz Compressed. When trying to sync the audio in Premiere Pro CC, the audio slowly loses sync over time. I already tried to convert the 44.1khz mp3 file to 48khz in Adobe Audition. But that didn't fix the problem. Any ideas?

There's always time-stretch changes to the audio file with "keep pitch unchanged" checked, I suppose. Mind you, I've heard of people doing it but haven't done it myself. There's other possible options I'm sure. There's been quite a few threads here on time-sync issues over time.

IPad 3 audio sync issue when video imported into CS5.5

Hi everyone, long time lurker here, love the support you guys are giving!
I'm hoping you'll be able to help with an audio sync problem I'm experiencing with videos recorded with the latest iPad 3 (well, that's what I'm calling it anyway).
I believe the iPad 3 recording format is 1080/30p with 44.1Khz / 16 bit audio, but when I match those settings on a Premiere Pro CS5.5 project (or try 48KHz audio as a test), the audio gradually goes out of sync. If the video is several minutes long, it becomes quite obvious, and by 10 minutes, it's terrible!
I should add the file plays back fine on the iPad itself and was imported to a Mac via iTunes. It also plays fine on the Mac itself in Quicktime.
Does anyone have any suggestions on project settings that'd work?
On a related note, I additionally captured the audio using a Zoom H2n which i intended to replace in Premiere, but foolishly I captured it at 48KHz, rather than the 44.1KHz of the iPad video file. Should I resample it?
I actually managed to line-up the 48 and 44.1KHz waveforms from the iPad and Zoom in Premiere quite accurately, but again both gradually go out of sync with the video...
I'm running Premiere Pro 5.5.2 on Mac OSX 10.7.3.
Any suggestions greatly appreciated!
Gordon Laing

To update my original post, I have found this problem happens about half the time.
Sometimes there's no issue and the audio is in sync when imported into Premiere, but at other times it's way off.
I did however find a workaround which has resolved the problem on my iPad3 videos which were out of sync and that was to first import the video clip into iMovie on the Mac first, then simply export it again using the 1080p option. The subsequent file is much larger (so there's been an annoying re-encode), but when imported into Premiere, the audio is at least now in sync.
I used this to fix the audio on a couple of the videos you can find on this page (all of which apart from the last one were filmed on the iPad3)
http://www.cameralabs.com/features/Working_holiday/
Since the video wasn't exactly critical to start with, I'm not too bothered by the re-encode.
Let me know if this fix works for anyone, and also if anyone comes up with a different solution.
Thanks,
Gordon

DMP-4310G Multicast video out of sync issues

Hi!
Currently I have following problem with DMS:
I have couple of DMPs connected to the same L2 switch with the identical configuration (same startup url, same buffers config etc.) and a multicast streaming server which streams (by UDP multicast) some live video to the DMPs.
Video codec is h264 (1920p,high [email protected], bw 6000kbps,29,97fps).
The problem is that after some time (6-15 hours) the video on the screens become out of sync (i.e. screens show the same video but with some delay (1 to 5 sec) between the same frames on 2 different screens for example).
DMM and DMPs - 5.2.2.
Can you advise me on that problem?

Hi again
I actually think my problems is very much similar to this one:
http://forums.adobe.com/message/2598909#2598909
Could it be related to H.264 and mainconecpt not doing things right?
When I try export the excact same project using Windows Media HDTV 720 - jsut setting the FPS to 50 instead of 25 it comes out nice. Looks a bit more blured to me, but might just adjust some parameters to get it right?
So i guess this issues with some periodic and ad hoc sync-issues is related to the H.264 mainconcept codec? Is there any other and better codecs for H.264 and how do one get them installed to use them inside PPro CS4?

.mov and .mpeg4 videos will not sync with iphone4

I have tried getting some modest sized (<1GB) videos on to my iPhone4 using iTunes 9. I have tried both .mov and .mpeg4 formats which are supported in the tech specs. Using both sync, and manual management modes, I get the error:"MOVIE X was not copied to this iphone because it can not be played on this iphone."

The movies were recorded on a Kodak ZI8. On a whim I tried WVGA, HD720P (30), and 1080P (30). An 8 second WVGA was able to be transferred. The 780P and 1080P formats would not copy. The other projects I tried to copy over were compilations primarily WVGA, that although they showed up as .mov, I am guessing they carried along some artifacts of other formats (stills?).
The 720P should be supported although I can't honestly validate the "Main Profile level 3.1 with AAC-LC audio up to 160 Kbps, 48kHz" requirement. Greek to me.
I am a bit surprised that the state of the art Iphone is unable to handle videos that are easily uploaded to facebook. c-est la vie.
Thanks.

Video and audio sync is off

I have a video that was captured using the Hauppauge Win-TV 950Q and the Win TV software package. The file plays just fine in WinTV or using the Windows Media Player, but the timing of the audio and video seem to slip if I import it into Premiere Elements. I am using version 10, so I don't know if this is something that was fixed in a newer version. Over the course of an hour, the audio goes from off by about a second at the beginning to being something on the order of eight seconds behind at the end of an hour. Anyone know how to fix this?
Thanks
-Bob

thanks for looking! If I knew the answers to all your questions, I probably would know what's wrong and how to fix it. I am not looking to do anything exciting here, just trying to archive a program to a playable DVD. Well - I have it playable, it's just not watchable unless you can deal with badly synced audio.
Loaded up mediainfo and it says the frame rate is 29.97, but a variable bit rate for video and constant audio.
I will look into handbrake.
Oh - and Win 7 OS...
It's probably more than necessary - but here's the text output:
General
ID                                       : 0 (0x0)
Complete name                            : C:\Users\Public\Videos\S-Video_20141020_1928.ts
Format                                   : MPEG-TS
File size                                : 3.00 GiB
Duration                                 : 55mn 32s
Overall bit rate mode                    : Variable
Overall bit rate                         : 7 740 Kbps
Video
ID                                       : 1001 (0x3E9)
Menu ID                                  : 1 (0x1)
Format                                   : MPEG Video
Format version                           : Version 2
Format profile                           : Main@Main
Format settings, BVOP                    : Yes
Format settings, Matrix                  : Default
Format settings, GOP                     : M=3, N=12
Codec ID                                 : 2
Duration                                 : 55mn 32s
Bit rate mode                            : Variable
Bit rate                                 : 7 163 Kbps
Maximum bit rate                         : 8 500 Kbps
Width                                    : 720 pixels
Height                                   : 480 pixels
Display aspect ratio                     : 16:9
Frame rate                               : 29.970 fps
Standard                                 : NTSC
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Interlaced
Scan order                               : Top Field First
Compression mode                         : Lossy
Bits/(Pixel*Frame)                       : 0.692
Time code of first frame                 : 02:17:15:16
Time code source                         : Group of pictures header
Stream size                              : 2.78 GiB (93%)
Audio
ID                                       : 1002 (0x3EA)
Menu ID                                  : 1 (0x1)
Format                                   : MPEG Audio
Format version                           : Version 1
Format profile                           : Layer 2
Codec ID                                 : 4
Duration                                 : 55mn 32s
Bit rate mode                            : Constant
Bit rate                                 : 192 Kbps
Channel(s)                               : 2 channels
Sampling rate                            : 48.0 KHz
Compression mode                         : Lossy
Delay relative to video                  : -297ms
Stream size                              : 76.3 MiB (2%)
Menu
ID                                       : 1000 (0x3E8)
Menu ID                                  : 1 (0x1)
Duration                                 : 55mn 32s
List                                     : 1001 (0x3E9) (MPEG Video) / 1002 (0x3EA) (MPEG Audio) / 1003 (0x3EB) ()

Video/Audio Sync Issues

I've uplaoded 2 different sets of media files in my project. The videos work independently. The audio and video are attached and have not been seperated. One set of files are experiecning audio glitches. I've then brought both sets of files into Movavi, and the opposite files are experiencing glitches. Is my goal impossible? What's a plausible solution?

After checking the OOS, it's not out of sync, it's glitching. His "mac" files are glitching in Premiere, my mpg1s are glitching in Movavi. Meanwhile NONE of the files are glitching in Windows Movie Maker. These glitches are consistent but in random locations, and no not locations I had razored. Once the "MAC files" are loaded into Premiere they have glitches, before I begin editing.
I'm on my personal PC which is only 5 months old. In the past I've dealt with glitches too on older computers and different editing softwar, (nero 7, roxio vhs to dvd, now premiere) and as I said I've also tested this out on my laptop and have dealt with the exact same glitches. Premeire is encodign these glitches durign import.
I just looked in the forums for this more defined issue and it is exactly like this unasnwered forum: http://forums.adobe.com/message/1702092#1702092
"While playing it seems to jump a few frames ahead every so often before it's actually supposed to and then will teleport back. This is before exporting or anything. Just going from import to viewing the imported clip in Premiere. "
Sorry I quoted myself and there is no undo:
While waiting for a response I've begun extratcing audio of files and adding it as "music" to Windows Movie Maker so i can have some semblance of a finished product, ebcause somethign is better than nothing. I'm still 2 seconds from going to going to Staples and getting Roxio Creator 2010.
I went to GSPOT and found that the original MOV files "couldn't find codecs", but when I converted those files a while back, they had codecs.
"CONTAINER: MPEG-2 Program Stream << { 1 vid, 1 aud }, MPG2 with an audio container of MPEG-1 Layer 2."
Now for my files, they are MPEG-1 with an audio container of MPEG-1 Layer 2. Now I have also converted those files to match the MPG2 format.
Based on this GSPOT app, I found that the MPG1 file was 100% pink in the "relative composition of the file by frame type" bar and the MPG2 and converted MOVs to MPG2s was 6% pink 94% purple. I don't know if this means anything?
- Melissa

Video and audio sync

I am currently having issues with the audio for shows and movies being out of sync while playing only through ITunes. I have Windows 7 and am using the Asus P6T motherboard's Realtek audio. I don't have any issues playing through windows video player, just iTunes and quicktime. I've tried all of the FAQ recommendations to include turning off sound enhancements and updating software for motherboard audio. Does anyone have any other ideas of how to get the audio and video to sync? Thank.

What are you editing, and does your project match your video?
Read Bill Hunt on a file type as WRAPPER http://forums.adobe.com/thread/440037
What is a CODEC... a Primer http://forums.adobe.com/thread/546811
What CODEC is INSIDE that file? http://forums.adobe.com/thread/440037
Report back with the codec details of your file, use the programs below... a screen shot works well to SHOW people what you are doing
http://forums.adobe.com/thread/592070?tstart=30
For PC http://mediainfo.sourceforge.net/en or http://www.headbands.com/gspot/
For Mac http://mediainspector.massanti.com/

Getting The Video and Audio Synced Up

I have a the weirdest feeling that the audio and video are not perfectly synced up. It may only be by a frame or two. In final cut pro, I can go frame by frame and hear where the audio should be and correct it. Can this be done in DVD studio pro? Is there any other way to check? It is nothing big, but I would really love some assurance that they are together. I have DVDSP 3.

Tyler Routson wrote:
I have a the weirdest feeling that the audio and video are not perfectly synced up. It may only be by a frame or two. In final cut pro, I can go frame by frame and hear where the audio should be and correct it. Can this be done in DVD studio pro? Is there any other way to check? It is nothing big, but I would really love some assurance that they are together. I have DVDSP 3.
DVD SP is not designed for that type of precise editing, just some general things, and you are better off doing all edits outside of DVD SP. Where are you seeing the synch problem?

Audio sync issues with H.264 / MP4

Hi,
If I render out a guide video as a .mp4 it doesn't play quite in sync with the audio in Audition (CS6 with ASIO). It looks to be a few frames out. I'll try rendering a video with a 2-pop and work out how precisely many, but has anyone else experienced this? Should I be using a different codec?
There's various ways to reproduce this, but this is the simplest:
- Render a MP4 in PPro (Profile 4.1; 6Mbps/8Mbps Max) with audio
- Import .mp4 into Audition
- Place audio an video onto tracks
- Video playback is out!
Sam

I filed a bug report and got this fix back from the audition team:
First, in Audition go into Preferences > Media & Disk Cache and put a check next to "Enable DLMS format support"
Then, open the MP4 file you created, only make sure to change the "Enable:" dropdown at the bottom of the Open dialog from "All Supported Media" to "MPEG Movie"
And let me know if you see the problem.
By default, Audition CS6 used Quicktime to import mp4 video files where Premiere used its own Dynamic Link Media Server (DLMS) importer. Audition CS6 can use DLMS, but due to a slightly slower startup time, we did not enable it by default. Enabling this and forcing the import through the DLMS MPEG importer, rather than the Quicktime importer, SHOULD display the video properly.
In effect, we determined this was a problem in Quicktime before and there was little we could do. Fortunately, with our next release we enable DLMS by default and will not require Quicktime support.

Solution to AVC/H.264 MPEG4 video compression Audio Sync Issue

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