[FFmpeg-user] Rotate video with ffmpeg library in iPhone application

Gagandeep gagandeep.bawa at ironroad.com
Tue Sep 27 19:12:26 CEST 2011

Hi Mikkel,

Yes I need this please provide code if you have any. I am trying to compress video in iPhone and then sending compress video to server. I need correct orientation of compress video so that it can be seen on server side and on other user's devices easily. 

While compression I am doing audio encoding which already making audio little bit faster then video and I am getting non monotone timestamp error while writing audio frames and getting few second shorter video  So my query is if I will again write audio separately for rotation purpose will it be sync properly with video?

Sent from my iPhone4

On 27-Sep-2011, at 6:51 PM, mikkel meinike <mimeini at gmail.com> wrote:

> I do it with mplayer. But then you will have to rotate only the video
> and than add the sound afterwords but that is not to difficult. If
> know one else have better ideas I can explain you how I do that but
> then you will have to ask me for it because I have to consult some old
> notes before i can explain you and I don't want to use time on that if
> you don't need it :-)
> Mikkel
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