That's the nature of JPEG compression, even at the highest quality level.
The HD TV obviously magnifies the artifacts.
I know nothing about TV or video, I just avoid the JPEG format at all costs myself, unless someone or something absolutely demands a JPEG from me, in which case I only generate the abomination as the final output file. Try working with PNG files instead—if your intended application permits it.
PNG won't work. Jpeg image is want they want and the only format that will work. They run 15 advertising images off a thumb drive. They run a slide show on the HDTV. The images stay up for 15 seconds at a time. Probably not enough time for people in a waiting room to notice the artifacts. Thanks,
I agree, and it's why I do not use JPEG, unless the client's needs absolutely dictate it.
I do a lot of Image work (tons of Titles) in PS, that goes to both DVD-Video and BD (Blu-ray Disc), and never, never introduce JPEG into the workflow. Everything that I output is PSD (or maybe a very few PNG's).
However, from the last response from iRuss, PSD will not be an option either.
As a bit of an after thought, perhaps iRuss could produce a Premiere Pro (or Elements) AV file for the SlideShow and Titles, and put an H.264 in an MP4 "wrapper" file on the thumbdrive? Then, a PSD could be used effectively in the video.
Just thinking here,
I was having the same problem. Saving out jpegs and they looked bad with artifacts around text especially on white background. Try this: When you are saving as a jpeg and the dialogue box pops up. Choose a quality of 12 (all the way to the right) and BASELINE OPTIMIZED. Not progressive. That seemed to work for me.