when i import video it is out of sync with the audio. source material is fine. no way to contact tech support.
Hi
. . . . when i import video it is out of sync with the audio. source material is fine . . . .
What is the source of the video?
Use MediaInfo to analyse a source video clip and in the Text view under the video section you see
Framerate mode: Variable
then the source video is the issue - many video editors including Movie Edit Pro expect Constant frame rate video and do not handle variable framerate video correctly.
To fix this the source video need converting to Constant framerate using a converter such as Handbrake.
John EB
Forum Moderator
thanx for the response. I did what you suggested, MediaInfo, and here are the results: General overall bit rate = variable. Video frame rate = 30.000 fps. Audio bit rate = variable. Audio frame rate = 43.066 fps (1024 spf). I'm guessing that the problem is because of the two different frame rates between audio and video...? can this be fixed? the files play fine in youtube. thanx. fe
Hi
. . . . I'm guessing that the problem is because of the two different frame rates between audio and video... . . .
The difference in frame rates is irrelevant.
Did you change to the Text view in MediaInfo and look at the parameter I mentioned above - what does it say?
Alternatively copy and paste the whole contents from the Text view in to your reply.
John EB
yes. video frame rate = 30.000 FPS
General
Complete name : E:\Video Projects\LGD\01-08-21\Drums 1.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/mp41)
File size : 1.77 GiB
Duration : 8 min 16 s
Overall bit rate mode : Variable
Overall bit rate : 30.7 Mb/s
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L5.1
Format settings : CABAC / 1 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 1 frame
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 8 min 16 s
Source duration : 8 min 16 s
Bit rate : 30.6 Mb/s
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate : 30.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.123
Stream size : 1.77 GiB (100%)
Source stream size : 1.77 GiB (100%)
Language : English
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
mdhd_Duration : 496328
Codec configuration box : avcC
Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 8 min 16 s
Source duration : 8 min 16 s
Bit rate mode : Variable
Channel(s) : 1 channel
Channel layout : C
Sampling rate : 44.1 kHz
Frame rate : 43.066 FPS (1024 SPF)
Compression mode : Lossy
Source stream size : 4.16 MiB (0%)
Language : English
mdhd_Duration : 496328
Hi
Thanks for the MediaInfo analysis - there appear to be several parameters missing, and the number of channels and channel layout are, for want of a better word, peculiar.
The audio has a sample rate of 44.1 kHz, and if your project sample rate is set to 48 kHz this can cause audio to go out of sync.
What device was the video recorded with - if a camera, which make and model?
Has the video been modified, eg the audio track has been replaced, or processed through a converter such as Handbrake?
John EB
thank you for trying to help. i changed the sample rate to 44.1k and it didn't help. The file plays on my computer, my phone, my wife's computer, my daughter's computer and on youtube just fine but when when i load it into magix it's when it gets out of sync. i've done some relly cool stuff with movie edit pro but lately the frustration has outweighed the satisfaction. I think it's just time to move on from magix. I've wasted enough time with it.
thank you for trying to help.
Pretty sure it is the audio codec mp4a-40-2 that is causing the problem. Quite a few reports on Google about various applications balking at it. I think it is an FFMPEG codec. Converting to another audio codec in a converter would probably help.
Peter
Hi
Please answer the questions I asked in my previous post ie:
What device was the video recorded with - if a camera, which make and model?
Has the video been modified, eg the audio track has been replaced, or processed through a converter such as Handbrake?
Additionally as @Scenestealer has commented
. . . . audio codec mp4a-40-2 that is causing the problem. , , , , I think it is an FFMPEG codec . . . .
This would suggest this is a screen recording, an animation software export or the original video has been modified.
Without this information we cannot help you.
John EB
It was recorded with a low budget video camera, about $100 on amazon. I will give you all the info I know about it. 4k Ultra HD Camcorder 2.4G wireless remote control. There is no make or model number. Even though it's low budget, it works with everything else I've tried. I have even downloaded trial versions of three other video programs and it works fine in those. The file has not been altered in any way. It's straight off the card, onto my computer and then into the program. I did find a work around. The first thing I tried was saving it on youtube. This worked. The audio and video were in sync however the video quality was terrible. So I loaded it into the video program that came on my computer and saved it as a new file. It seems to have done the trick.
thanx again for your help.