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Video is async with the audio

Forum|Forum|7 years ago
September 18, 2018
4 replies
1197 views

Hi

I've got a problem with video/audio sync, when importing them into Adobe Premier Elements 12.

I'm no beginner but I have not that much experience with videoformates, containers or codecs, nor I have an exact understanding of variable framerates ect.

Up to this moment, I've never had a problem when importing videos and cutting them.

However when I am importing a new videoclip, the audio and video are not in sync. But its not just a delay or offset. The audio matches the video at the beginning but at the end of a 12min file, the audio is 2 seconds delayed although video and audio track end at the same time. Mannually changing playback speed of only the video track by guessing a fitting ratio helps, but is certainly not satisfying.

In addition, displayed frame rate and video duration does not match the file details given by explorer. Adjusting frame rate manually by assuming footage settings does not solve the audio-video mismatch. I've also tried to load different project presets with no success.

I've installed Adobe Premier on various devices, even with different operation systems. Everywhere the problem is the same. On the other hand, opening the file with any other program than Adobe Premier workes fine.

Thanks in advance for help

This topic has been closed for replies.

Correct answer Steve Grisetti

What model of camcorder is your video coming from? It could be that your video is using a variable frame rate, as I discuss in this video.

Fixing Out of Sync video with Handbrake - YouTube

S

Steve Grisetti

Legend

At this point, I'm not aware of any editor that works well with variable frame rates. Although, since more phones are using it as part of their video compression system, I would expect to see support for it beginning to appear.

Meantime, the only options I know of are converting the video or manually applying some sort of time stretch to match video to audio -- which is even more troublesome.

S

Steve Grisetti

Legend

As we suspected, the issue is that your video includes a variable frame rate.

So I don't know why it worked before. Maybe you were working with shorter videos and didn't notice it. But that's why you're having out of sync issues now.

S

smonr54429771Author

Participant

Yes that could be true, but sometimes I have recorded also longer videos. I guess the fps variation was not that extreme. MediaInfo proved this even now.

Thank you for your support, ... I started to get crazy the last 3 days.

Is there a solution for premiere? A Pugin or an Add-on? To convert every single video shot before editing is not so satisfactory.

Nevertheless, I'm glad to get this problem determined and temporarily solved, so I can now continue with my project.

S

Steve Grisetti

Legend

If you want to confirm the issue, open one of your Sony videos in the free download MediaInfo. In MediaInfo, set View to Text and then copy and paste the report it generates to this forum.

I don't know why it used to work but suddenly doesn't. The program itself has not changed. But at least the MediaInfo report will tell us if the issue is with the video file itself.

S

smonr54429771Author

Participant

So here ist the output of Mediainfo of one of the new video.
Actually I used to record in 4K the last times, so I run it through Mediainfo as well.

General

Complete name : C:\Users\Smon\Videos\Bild, Video\videos\MOV_5563.mp4

Format : MPEG-4

Format profile : Base Media / Version 2

Codec ID : mp42 (isom/mp42)

File size : 1.45 GiB

Duration : 11 min 44 s

Overall bit rate : 17.7 Mb/s

Encoded date : UTC 2018-09-07 15:19:51

Tagged date : UTC 2018-09-07 15:19:51

com.android.version : 7.1.1

Video

ID : 1

Format : AVC

Format/Info : Advanced Video Codec

Format profile : High@L4

Format settings : CABAC / 1 Ref Frames

Format settings, CABAC : Yes

Format settings, RefFrames : 1 frame

Format settings, GOP : M=1, N=16

Codec ID : avc1

Codec ID/Info : Advanced Video Coding

Duration : 11 min 44 s

Source duration : 11 min 44 s

Bit rate : 17.5 Mb/s

Width : 1 920 pixels

Height : 1 080 pixels

Display aspect ratio : 16:9

Frame rate mode : Variable

Frame rate : 29.870 FPS

Minimum frame rate : 14.960 FPS

Maximum frame rate : 30.602 FPS

Color space : YUV

Chroma subsampling : 4:2:0

Bit depth : 8 bits

Scan type : Progressive

Bits/(Pixel*Frame) : 0.283

Stream size : 1.44 GiB (99%)

Source stream size : 1.44 GiB (99%)

Title : VideoHandle

Language : English

Encoded date : UTC 2018-09-07 15:19:51

Tagged date : UTC 2018-09-07 15:19:51

mdhd_Duration : 704471

Codec configuration box : avcC

Audio

ID : 2

Format : AAC LC

Format/Info : Advanced Audio Codec Low Complexity

Codec ID : mp4a-40-2

Duration : 11 min 44 s

Source duration : 11 min 44 s

Source_Duration_FirstFrame : 11 ms

Bit rate mode : Constant

Bit rate : 156 kb/s

Channel(s) : 2 channels

Channel layout : L R

Sampling rate : 48.0 kHz

Frame rate : 46.875 FPS (1024 SPF)

Compression mode : Lossy

Stream size : 13.1 MiB (1%)

Source stream size : 13.1 MiB (1%)

Title : SoundHandle

Language : English

Encoded date : UTC 2018-09-07 15:19:51

Tagged date : UTC 2018-09-07 15:19:51

mdhd_Duration : 704448

The 4K clip:

General

Complete name : C:\Users\Smon\Videos\Bild, Video material\1.Ausmessen\MOV_0295.mp4

Format : MPEG-4

Format profile : Base Media / Version 2

Codec ID : mp42 (isom/mp42)

File size : 464 MiB

Duration : 1 min 10 s

Overall bit rate : 55.0 Mb/s

Encoded date : UTC 2018-02-28 21:34:33

Tagged date : UTC 2018-02-28 21:34:33

com.android.version : 7.1.1

Video

ID : 1

Format : AVC

Format/Info : Advanced Video Codec

Format profile : High@L5.1

Format settings : CABAC / 1 Ref Frames

Format settings, CABAC : Yes

Format settings, RefFrames : 1 frame

Format settings, GOP : M=1, N=16

Codec ID : avc1

Codec ID/Info : Advanced Video Coding

Duration : 1 min 10 s

Bit rate : 56.1 Mb/s

Width : 3 840 pixels

Height : 2 160 pixels

Display aspect ratio : 16:9

Frame rate mode : Variable

Frame rate : 29.970 (29970/1000) FPS

Minimum frame rate : 29.723 FPS

Maximum frame rate : 30.181 FPS

Color space : YUV

Chroma subsampling : 4:2:0

Bit depth : 8 bits

Scan type : Progressive

Bits/(Pixel*Frame) : 0.226

Stream size : 462 MiB (100%)

Title : VideoHandle

Language : English

Encoded date : UTC 2018-02-28 21:34:33

Tagged date : UTC 2018-02-28 21:34:33

mdhd_Duration : 70450

Codec configuration box : avcC

Audio

ID : 2

Format : AAC LC

Format/Info : Advanced Audio Codec Low Complexity

Codec ID : mp4a-40-2

Duration : 1 min 10 s

Source duration : 1 min 10 s

Source_Duration_FirstFrame : 8 ms

Bit rate mode : Constant

Bit rate : 156 kb/s

Channel(s) : 2 channels

Channel layout : L R

Sampling rate : 48.0 kHz

Frame rate : 46.875 FPS (1024 SPF)

Compression mode : Lossy

Stream size : 1.31 MiB (0%)

Source stream size : 1.31 MiB (0%)

Title : SoundHandle

Language : English

Encoded date : UTC 2018-02-28 21:34:33

Tagged date : UTC 2018-02-28 21:34:33

mdhd_Duration : 70641

I also digged out an old video from 2016. As I see now this file has a variable frameratesas as well :

General

Complete name : C:\Users\Smon\Videos\MOV_1621.mp4

Format : MPEG-4

Format profile : Base Media / Version 2

Codec ID : mp42 (isom/mp42)

File size : 58.3 MiB

Duration : 8 s 781 ms

Overall bit rate : 55.7 Mb/s

Encoded date : UTC 2016-03-27 13:38:50

Tagged date : UTC 2016-03-27 13:38:50

Video

ID : 1

Format : AVC

Format/Info : Advanced Video Codec

Format profile : High@L5.1

Format settings : CABAC / 1 Ref Frames

Format settings, CABAC : Yes

Format settings, RefFrames : 1 frame

Format settings, GOP : M=1, N=18

Codec ID : avc1

Codec ID/Info : Advanced Video Coding

Duration : 8 s 781 ms

Bit rate : 54.9 Mb/s

Width : 3 840 pixels

Height : 2 160 pixels

Display aspect ratio : 16:9

Frame rate mode : Variable

Frame rate : 29.970 (29970/1000) FPS

Minimum frame rate : 29.831 FPS

Maximum frame rate : 30.070 FPS

Color space : YUV

Chroma subsampling : 4:2:0

Bit depth : 8 bits

Scan type : Progressive

Bits/(Pixel*Frame) : 0.221

Stream size : 57.4 MiB (98%)

Title : VideoHandle

Language : English

Encoded date : UTC 2016-03-27 13:38:50

Tagged date : UTC 2016-03-27 13:38:50

Codec configuration box : avcC

Audio

ID : 2

Format : AAC LC

Format/Info : Advanced Audio Codec Low Complexity

Codec ID : mp4a-40-2

Duration : 8 s 761 ms

Duration_FirstFrame : 15 ms

Bit rate mode : Constant

Bit rate : 156 kb/s

Nominal bit rate : 96.0 kb/s

Channel(s) : 2 channels

Channel layout : L R

Sampling rate : 48.0 kHz

Frame rate : 46.875 FPS (1024 SPF)

Compression mode : Lossy

Stream size : 167 KiB (0%)

Title : SoundHandle

Language : English

Encoded date : UTC 2016-03-27 13:38:50

Tagged date : UTC 2016-03-27 13:38:50

S

Steve GrisettiCorrect answer

Legend

What model of camcorder is your video coming from? It could be that your video is using a variable frame rate, as I discuss in this video.

Fixing Out of Sync video with Handbrake - YouTube

S

smonr54429771Author

Participant

I'm recording with my mobile. It's a sony xperia Z5 comact, but I'm useing it more than a year and never had this kind of problem. Just for fun I imported a real movie in premiere and had the same issue.

I downloaded "Handbrake" yesterday and I found out it worked now fine when converting the movie to fixed fps. However, this is not very satisfying convert every videoclip at first. And I still wonder why it worked before and suddenly not anymore.

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