On 10/9/19, Jason Green <[email protected]> wrote: > Ok so I get that png doesn't have a colourspace, so do I need to specify a > colorspace for the input? Plus I need to specify the output I am guessing. > I have tried outputting with various colorspace and color_range values but > I'm having no luck. Do I need to just keep experimenting with these values? >
colorspace in this context: jpg is yuv ang png is rgb. > > On Wed, 9 Oct 2019 at 12:19, Paul B Mahol <[email protected]> wrote: > >> On 10/9/19, Jason Green <[email protected]> wrote: >> > I'm sorry to bother you all with this but I have been unable to resolve >> the >> > issue with my own research (which is really rare for me :) ). >> > >> > I am trying to overlay pngs of text that have been generated by another >> > source onto jpg photos. I have simplified the command down to it's >> simplest >> > example and I am using public images so you can even try the command >> > yourself. >> > >> > ffmpeg -y -i " >> > https://asset-info-examples.s3-eu-west-1.amazonaws.com/white-text-bg.jpg >> " >> > -i " >> https://asset-info-examples.s3-eu-west-1.amazonaws.com/white-text.png"; >> > -movflags faststart -filter_complex "[0][1]overlay=x=131:y=300" -q:v 6 >> > -f >> > image2 -codec:v mjpeg test_remote.jpg >> > >> > The white text png has perfectly white pixels in the original, but in >> > the >> > final they are slightly grey. I have tried various options using format >> but >> > I can't manage to get it to work. >> > >> > Any suggestions would be appreciated. >> >> Avoid implicit colorspace conversion, and do it explicitly. >> >> > _______________________________________________ >> > ffmpeg-user mailing list >> > [email protected] >> > https://ffmpeg.org/mailman/listinfo/ffmpeg-user >> > >> > To unsubscribe, visit link above, or email >> > [email protected] with subject "unsubscribe". >> _______________________________________________ >> ffmpeg-user mailing list >> [email protected] >> https://ffmpeg.org/mailman/listinfo/ffmpeg-user >> >> To unsubscribe, visit link above, or email >> [email protected] with subject "unsubscribe". > > > > -- > *Jason Green* > > > > > > > *Principal Developer Email: [email protected] > <[email protected]> Mobile: +44 7462 752 694 > <++44+7462+752+694>* > [image: Snapchat] <https://www.snapchat.com/add/threads_styling> [image: > Instagram] <https://www.instagram.com/threadsstyling> [image: LinkedIn] > <https://api.whatsapp.com/send?phone=447881362517> > > This email and any files transmitted with it are confidential and intended > solely for the use of the individual or entity to whom they are addressed. > If you have received this email in error please notify the system manager. > This message contains confidential information and is intended only for the > individual named. If you are not the named addressee you should not > disseminate, distribute or copy this e-mail. Please notify the sender > immediately by e-mail if you have received this e-mail by mistake and > delete this e-mail from your system. If you are not the intended recipient > you are notified that disclosing, copying, distributing or taking any > action in reliance on the contents of this information is strictly > prohibited. > _______________________________________________ > ffmpeg-user mailing list > [email protected] > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
![https://asset-info-examples.s3-eu-west-1.amazonaws.com/white-text.png"](https://asset-info-examples.s3-eu-west-1.amazonaws.com/white-text.png"){kind=link}