mencoder/ffmpeg Audio Video syncing problems

English Multimedia
#1

**** Background ****

I have a few videos that I have downloaded, they play fine using mplayer and xine.

I want to view the videos on my Nokia N95. With this in mind i decided to use mencoder to rescale the videos to fit the resolution of the N95.

The N95 plays movies in a mp4 container without bother. The N95 has a screen resolution of 320x240.

**** The Problem ** **

When I use either ffmpeg or mencoder to rescale the movie file to this resolution in a mp4 container the audio and video go out of sync.

I have tried to uninstall and reinstall the mplayer ffmpeg and all the libraries related to these programs, but it doesn’t make a difference.

Has anybody got a scrip that works i have tried to use google and all the scripts that are meant to work fail with the audio and video being out of sync.

Help appreciated

#2

Hi
I’ve used the dumpstream command from mplayer to get a
copy of the file, then used ffmpeg as follows for a Treo;


ffmpeg -a <input_file>.avi -sameq -vcodec xvid -acodec mp3 -s
320x240 <output_file>.avi

–
Cheers Malcolm °¿° (Linux Counter #276890)
openSUSE 11.0 x86 Kernel 2.6.25.16-0.1-default
up 0:36, 1 user, load average: 0.00, 0.04, 0.17
GPU GeForce 6600 TE/6200 TE - Driver Version: 173.14.12

#3

You could also try avidemux to rescale (and resync, if necessary).

#4

Thanks people i will try and let you know how i get on :slight_smile:

#5

you will find there is an avidemux forum, and you may find much valuable support there

Avidemux2 Forum

they talked me through changes in file format that was very helpful; avidemux can do many things, so is not intuitive to new users (I found)