[FFmpeg-user] ffmpeg

[Lou]

On Tue, 12 Jul 2011 12:54:03 -0300
"cmjury at gmail.com" <cmjury at gmail.com> wrote:

>  Hello I tried one of your tricks splitting my "zi6 quicktime mov" hd
> videos, i have 250 clips of around 10 or 15 seconds each, from lot of
> places, locationes around the globe and want to combine them in a
> single big clip.

Are all of your inputs the same frame rate, format, etc?

> I can merge them very good with "mkvmerge".
> The problem is that the first frames of all videos in the collection
> (splitted with ffmpeg), are gray or with artifacts at beggining

With what player? Does it play as expected with ffplay?

> I do not know how to explain, maybe wrong ffmpeg commands, I'm
> doing this (whit batch command line, which is great / fast for me):
> 
> =======begin of batch file
> ffmpeg -i jockey_club_fpv.mov -ss 00:00:17 -t 00:00:24 -g 1 -sameq
> -vcodec copy -vf fade=in:0:30 partes3a.mov

-g 1, -sameq, and -vf fade=in:0:30 options are not compatible with
-vcodec copy. If you want to apply a fade in you will need to
re-encode. I'm guessing that FFmpeg is using -vcodec copy and ignoring
the other options.

> ffmpeg -i jockey_club_fpv.mov -ss 00:04:40 -t 00:00:20 -g 1 -sameq
> -vcodec copy -vf fade=in:0:30 partes3b.mov
> ffmpeg -i jockey_club_fpv.mov -ss 00:05:35 -t 00:01:00 -g 1 -sameq
> -vcodec copy -vf fade=in:0:30 partes3c.mov
> ffmpeg -i jockey_club_fpv.mov -ss 00:07:11 -t 00:00:10 -g 1 -sameq
> -vcodec copy -vf fade=in:0:30 partes3d.mov
> ffmpeg -i jockey_club_fpv.mov -ss 00:07:45 -t 00:00:21 -g 1 -sameq
> -vcodec copy -vf fade=in:0:30 partes3e.mov
> ffmpeg -i jockey_club_fpv.mov -ss 00:08:47 -t 00:00:05 -g 1 -sameq
> -vcodec copy -vf fade=in:0:30 partes3f.mov
> ffmpeg -i jockey_club_fpv.mov -ss 00:09:18 -t 00:00:10 -g 1 -sameq
> -vcodec copy -vf fade=in:0:30 partes3g.mov
> ffmpeg -i jockey_club_fpv.mov -ss 00:09:35 -t 00:00:09 -g 1 -sameq
> -vcodec copy -vf fade=in:0:30 partes3h.mov
> ffmpeg -i jockey_club_fpv.mov -ss 00:10:07 -t 00:00:16 -g 1 -sameq
> -vcodec copy -vf fade=in:0:30 partes3i.mov
> mkvmerge -o join4.mov partes3a.mov + partes3b.mov + partes3c.mov +
> partes3d.mov + partes3e.mov + partes3f.mov + partes3g.mov +
> partes3h.mov + partes3i.mov
> =======end of batch file
> 
> Thanks a lot for any answer!!