Avidemux Forum

Avidemux => Stable branch (2.5) discussion => Topic started by: DuckDaffy on March 28, 2012, 12:16:12 AM

Title: How to join videos with slightly different fps?
Post by: DuckDaffy on March 28, 2012, 12:16:12 AM
Hi friends,

my photo camera Kodak Easyshare Z1080 IS create MOV video with slightly different real fps in every shot within cca 29.990-30.010 fps.
Maximal length of one 720p video is 30 minutes (EU direction???).

While I filming long events like lectures so I need to join more videos to one, but because they have different fps I got horrible sound sync problems with Avidemux 2.5.6.  :(

I tried to transcode all parts to mp4 with exactly 30.000 fps and join these, but not succes too...  :o

Is there any way to solve this problem please?  ???

Which method, hack or other tool can help me?

THX!
Title: Re: How to join videos with slightly different fps?
Post by: Jan Gruuthuse on March 28, 2012, 05:43:49 AM
Quote from: DuckDaffy on March 28, 2012, 12:16:12 AM
Hi friends,

my photo camera Kodak Easyshare Z1080 IS create MOV video with slightly different real fps in every shot within cca 29.990-30.010 fps.
Maximal length of one 720p video is 30 minutes (EU direction???).
Most likely: No. Have several recordings in 720p over several hours. Other container format:  mpeg-ts. culprit is more likely the restriction the format of the storage? size limitation of recording like 2 GB with avi?

QuoteWhile I filming long events like lectures so I need to join more videos to one, but because they have different fps I got horrible sound sync problems with Avidemux 2.5.6.  :(

I tried to transcode all parts to mp4 with exactly 30.000 fps and join these, but not succes too...  :o

Is there any way to solve this problem please?  ???
Maybe extracting audio 1st, joining audio in audio editor, when video is assembled, exchange videotrack?
Title: Re: How to join videos with slightly different fps?
Post by: styrol on March 28, 2012, 09:19:41 AM
Try Avidemux 2.6 (http://avidemux.org/nightly) in copy mode and resample fps if you really have to.
Title: Re: How to join videos with slightly different fps?
Post by: DuckDaffy on March 28, 2012, 05:11:41 PM
Quote from: styrol on March 28, 2012, 09:19:41 AM
Try Avidemux 2.6 (http://avidemux.org/nightly) in copy mode and resample fps if you really have to.

I tried Avidemux v2.6 release 7819, but original MOV cannot be opened "Cannot find a demuxer for...".

However when I tried to join (copy mode) separated converted and resized MP4 videos without change of original fps (from Avidemux v2.5.6) to one file then audio sync is OK! Great! :D

Unfortunately I got big shuttering in MPC-HC v1.6.0.4014 when playing same as with video (with audio sync problem) from Avidemux v2.5.6.
In VLC was all ok.