[Mp4-tech] [video] ffmpeg h263 decoding problem
Hakan Demirel
demirelhakan yahoo.com
Wed Mar 2 09:36:43 ESTEDT 2005
Hi,
I am trying to convert a .3gp file to a .mp4 file using ffmpeg library.
The .3gp file has a H263 encoded video stream and an AMR_NB encoded
audio stream..
I want the output .mp4 file to have an MPEG4 encoded video stream and
an AAC encoded audio stream..
When I run the following command:
ffmpeg -i input.3gp -ar 4000 -ab 24 output.mp4
the resulting video stream is MPEG4 encoded.. But I noticed that many
of the frames seem to be dissmissed.. So, the length of the video is
smaller.. I tried to increase the frame rate.. It worked but the video
stream is flowing really faster according to the original file.
I am using ffmeg version 0.4.9pre1
Any idea?
:)
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