| View previous topic :: View next topic |
| Author |
Message |
catkfr
Guru
Joined: 02 Aug 2004
Posts: 300
|
 Posted: Mon Oct 15, 2007 12:53 am Post subject: ffmpeg changing brightness, contrast, gamma for PSP encoding |
 |
|
I want to improve a script I am using to convert videos for the PSP. I have a script which is working well enough using ffmpeg but I have a significant amount of character ghosting when played on the PSP.
I've found this site which suggest that ghosting can be reduced by:
| Quote: | | - Raising the brightness, contrast and/or gamma fixes the ghosting of character movements and objects on screen. |
I can't find how or even if such tweaks are possible using ffmpeg. Does anyone know if this is possible using ffmpeg? If not, do you know a program which can do this?
Thanks,
PS: I'd really rather do this using ffmpeg than to learn how to convert some codec options I need to use for the PSP |
|
| Back to top |
|
 |
FishB8
l33t
Joined: 17 Mar 2003
Posts: 820
|
| Posted: Tue Oct 16, 2007 1:51 am Post subject: |
|
|
Use transcode.
_________________
"...as we enjoy great advantages from the inventions of others, we should be glad of an opportunity to serve others by any invention of ours, and this we should do freely and generously." -Benjamin Franklin |
|
| Back to top |
|
|
catkfr
Guru
Joined: 02 Aug 2004
Posts: 300
|
| Posted: Tue Oct 16, 2007 2:23 pm Post subject: |
|
|
| Ok, I took a look at transcode and it can correct gamma but cannot change brightness or contrast, nor encode h264 files which I need for this application. So it's pretty much not the tool I'm looking for here. |
|
| Back to top |
|
|
Gusar
Advocate
Joined: 09 Apr 2005
Posts: 2665
Location: Slovenia
|
| Posted: Tue Oct 16, 2007 4:18 pm Post subject: |
|
|
| mencoder (comes with mplayer) is the right tool for you. Prepare yourself for a lot of reading, mplayer's man page is huge. It's probably simplest to search for a mencoder->psp guide, there's probably quite a few of them on the net. The only thing you then need to add to the commandline is the eq2 filter, it's usage is explained in the man page |
|
| Back to top |
|
|
catkfr
Guru
Joined: 02 Aug 2004
Posts: 300
|
| Posted: Wed Oct 17, 2007 5:02 pm Post subject: |
|
|
| I was afraid of the mencoder answer but thanks for the eq2 filter. I'll have to take the time to look into that. |
|
| Back to top |
|
|
|
Multimedia
