Recording a video from openMSX: reszing, cropping, aspect ratio, ...

By Overflow

Resident (57)

Overflow's picture

16-03-2015, 19:03

Hi! this is a follow-up dedicated to Vampier.
IO has been recorded thru openMSX (*).
Then it was converted for HD youtube thru:ffmpeg.exe -i openmsx0001.avi -b:v 1600k -bufsize 1600k -maxrate 2000k -vf "scale=w=960:h=720:sws_flags=neighbor:sws_dither=none,crop=852:720:54:00" -aspect 4:3 output.mp4
I'm wondering: did I miss some of openMSX features when recording?
Mainly: does the emulator allow to crop when recording?
id est: remove unseen borders at right&left, while keeping or changing aspect ratio.
This is not a feature request! ffmpeg is perfect for the job.

(* Actually, IO has been cross-developped thru openMSX;
without your work guys, IO would not have been possible.)

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By Manuel

Ascended (18148)

Manuel's picture

16-03-2015, 21:11

Great to hear that last thing Smile We're really happy to read you're enjoying openMSX Smile

Regarding cropping: nope it's not supported. The only thing you can influence is the size. The latest openMSX can record at triplesize, so at 960x720, which will make YouTube use 60 fps.

By Grauw

Ascended (10062)

Grauw's picture

16-03-2015, 21:18

What’s the command for that again?

By Manuel

Ascended (18148)

Manuel's picture

16-03-2015, 23:24

use -triplesize instead of -doublesize.... (duh ;-))

By anonymous

incognito ergo sum (116)

anonymous's picture

17-03-2015, 00:35

There's a triplesize option for recording, too? Awesome, I wish I'd known before. Going to try it out soon. Smile