[FFmpeg-user] Concatenate MP4s plus fade in effect command

[Lou]

On Fri, 25 Apr 2014 09:37:33 -0400
sean blow <iamnoble2014 at gmail.com> wrote:

> I need help with adding a fade in effect at the beginning of output2.ts and
> output3.ts for a duration of 2 seconds each. basically I need to be able to
> be able to add a transition effect from video to video.

Fading will require re-encoding. See the fade, setpts, concat filters:

http://ffmpeg.org/ffmpeg-filters.html#fade
http://ffmpeg.org/ffmpeg-filters.html#setpts_002c-asetpts
http://ffmpeg.org/ffmpeg-filters.html#concat