How to add title and fade transitions with cli

[pico77]

Dear All

I have a many video files that I want to group and merge into a single videos according to what it is filmed. I know how to merge videos by cli using mkvmerge.

However I would also like to:

• add a fade transition between videos
  
• at the beginning of each video I would like to put some description on the center-bottom which has to stay on for some time (like 5seconds or so)
  

there is any CLI solution to do that?

Regards
Pierre

[Baldrick]

Try ffmpeg. See for example http://superuser.com/questions/778762/crossfade-between-2-videos-using-ffmpeg

[pico77]

Try ffmpeg. See for example http://superuser.com/questions/778762/crossfade-between-2-videos-using-ffmpeg

tried, but it doesn't work!
P

[Baldrick]

What happens? Error message?

[pico77]

What happens? Error message?

Using the code you've linked above, that is

ffmpeg -i 01.mkv -i 02.mkv -f lavfi -i color=black -filter_complex  "[0:v]format=pix_fmts=yuva420p,fade=t=out:st=4:d=1:alpha=1,setpts=PTS-STARTPTS[va0];[1:v]format=pix_fmts=yuva420p,fade=t=in:st=0:d=1:alpha=1,setpts=PTS-STARTPTS+4/TB[va1]; [2:v]scale=960x720,trim=duration=9[over]; [over][va0]overlay[over1]; [over1][va1]overlay=format=yuv420[outv]"  -vcodec libx264 -map [outv] out.mkv

I get this:

Unrecognized option 'filter_complex'
Failed to set value '[0:v]format=pix_fmts=yuva420p,fade=t=out:st=4:d=1:alpha=1,setpts=PTS-STARTPTS[va0];[1:v]format=pix_fmts=yuva420p,fade=t=in:st=0:d=1:alpha=1,setpts=PTS-STARTPTS+4/TB[va1];[2:v]scale=960x720,trim=duration=9[over];[over][va0]overlay[over1];[over1][va1]overlay=format=yuv420[outv]' for option 'filter_complex'

Thanks
P

[Baldrick]

Upgrade ffmpeg to get all filter features.

[pico77]

Upgrade ffmpeg to get all filter features.

ok thanks
P