Mobile/PDA About Us Advertise here
User User name Password  
  Not registered yet? Register here.
Lost your password? Click here. 		 
  Home   News   Guides   Downloads   Glossary   Hardware   Profiles   Forums   v4  
 Advertise at AfterDawn.com     Link to us!     Private messages     Compose a private message     List of all updated threads     Threads without replies     Search messages
Wednesday 6.8.2025 / 20:29
Search AfterDawn Forums:        In English   Suomeksi   På svenska
afterdawn.com > forums > digital video > video - everything else > mysterious slow-down problem after editing file
Show topics
 
Forums
Forums
Mysterious slow-down problem after editing file
  Jump to:
 
Posted Message
Fronzel42
Newbie
_ 		8. August 2009 @ 22:29 _ Link to this message    Send private message to this user   
I was using AVIdemux to trim a MPEG4 and convert it to a MKV so I could add some soft subtitles, but the video of the resulting file plays strangely slowly, lagging behind the audio. I checked it with MediaInfo, but the framerate is what it should be.
[ + quote]
jony218
Suspended due to non-functional email address
_ 		8. August 2009 @ 23:37 _ Link to this message    Send private message to this user   
That therein is the problem. With avidemux I found out that when converting between codecs you need to adjust the framerate. The setting is up on top video/framerate. You need to play with it till you get the audio sync up. I usually use 23.976/25.000/29.976, but you can try different settings.

The good thing about avidemux is you can preview if the video/audio will be insync in realtime by just clicking on the output window and pressing the play arrow. If the video/audio is insync you can save it.
[ + quote]

This message has been edited since posting. Last time this message was edited on 8. August 2009 @ 23:38
varnull
Suspended permanently
_ 		9. August 2009 @ 09:24 _ Link to this message    Send private message to this user   
That sounds like you have tried editing something with a barely supported codec. Avidemux uses ffmpeg which while it can handle most things does have a few problems with h.264 found inside mkv wrappers.

this will probably throw some light on where your problem is coming from.. http://rob.opendot.cl/index.php/useful-s...encoding-guide/

I would use ffmpeg raw command line to change the codec.. to something I know avidemux will cope with... or use one of the mkv toolkit things.
[ + quote]
afterdawn.com > forums > digital video > video - everything else > mysterious slow-down problem after editing file
 

Digital video: AfterDawn.com | AfterDawn Forums
Music: MP3Lizard.com
Gaming: Blasteroids.com | Blasteroids Forums | Compare game prices
Software: Software downloads
Blogs: User profile pages
RSS feeds: AfterDawn.com News | Software updates | AfterDawn Forums
International: AfterDawn in Finnish | AfterDawn in Swedish | AfterDawn in Norwegian | download.fi
Navigate: Search | Site map
About us: About AfterDawn Ltd | Advertise on our sites | Rules, Restrictions, Legal disclaimer & Privacy policy
Contact us: Send feedback | Contact our media sales team
 
  © 1999-2025 by AfterDawn Ltd.

  IDG TechNetwork