There are lots of artwork requirements, depending on the type of channel. You'll need to review the developer guides on the exact requirements. One thing that is important is that you will likely want to create artwork for both SD and HD modes, regardless of any video aspect ratios. The pixel dimensions and pixel aspect ratio can be different for SD vs. HD mode, so be aware of that if you're particular about correct aspect ratios.
You'll probably have main channel SD and HD artwork, screenshots, then artwork internal to the channel such as roPosterScreen, themes, inside the player, and BIF. The artwork required depends on if you have audio or video players in your channel and whether you might have custom artwork. I use ffmpeg to extract jpeg files required from video, then GIMP if necessary to resize for SD and HD.
Here's the cheat sheet I created for assembling all the artwork sizes in one place. Note that some screens have the ability to resize artwork.
Ask a more specific question and you might get a more specific answer.
Image Sizes for Channel
Channel Store: SD=214x144; HD=290x218
Image Sizes for content
Content Meta-Data
Url (roSlideShow or roImageCanvas)
SDBifUrl
HDBifUrl
SDPosterUrl
HDPosterUrl
roPosterScreen = will scale
o “arced-portrait” - Artwork sizes: SD=158x204; HD=214x306
o “arced-landscape” banner Ad - Artwork sizes: SD=214x144; HD=290x218
o “arced-16x9” – Artwork sizes: SD=285x145; HD=385x218
o “arced-square” – Artwork sizes: SD=223x200; HD=300x300 Note: is non-square NTSC pixel aspect ratio images
o “flat-category” banner Ad – Artwork sizes: SD=224x158; HD=304x237
o “flat-episodic” – Artwork sizes: SD=166x112; HD=224x168
o “rounded-rect-16x9-generic” – Artwork Sizes: SD=177x90; HD=269x152
o “flat-episodic-16x9” – Artwork sizes: SD=185x94; HD=250x141
Banner Ad HD = 728x90 Banner Ad SD = 540x60
roSpringboard - image based on ContentType
"Artwork may be displayed portrait or landscape orientation depending on the ContentType set in the metadata."
3. audio - SD=124 x 112; HD=188 x 188
4. episode - SD=180 x 122; HD=264 x 198
5. any other value - SD=112 x 142; HD=148 x 212
DescriptionStyle
"audio"
"movie"
"video" banner Ad
"generic"
PosterStyle
o “rounded-square-generic” – Artwork sizes: SD=143x129; HD=209x209 Note: is non-square NTSC pixel aspect ratio images. (Default)
o “rounded-rect-16x9-generic” – Artwork Sizes: SD=177x90; HD=269x152
Since Firmware version 2.6:
o “multiple-portrait-generic” – Artwork sizes: SD=104x134; HD=142x202
Banner Ad HD = 728x90 Banner Ad SD = 540x60
Ad Display mode - scale-to-fill, scale-to-fit
Slideshow images DisplayMode - scale-to-fill, scale-to-fit, zoom-to-fill, photo-fit
roGridScreen
Original Artwork sizes: SD=110x150; HD=210x270 (jpg is optimal)
o flat-movie – movie posters as seen in the Netflix channel (Default)
? Image sizes: SD 110x150 HD 210x270
? SD 5 posters across, by 2 rows
? HD 5 posters across, by 2 rows
o flat-portrait
? Image sizes: SD 110x140 HD 210x300
? SD 5 posters across, by 2 rows
? HD 5 posters acress, by 2 rows
o flat-landscape
? Image sizes: SD 140x94 HD 210x158
? SD 4 posters across, by 3 rows
? HD 5 posters across, by 3 rows
o flat-square – note that SD has non-square pixels so the dimensions below appear as square on the screen
? Image sizes: SD 96x86 HD 132x132
? SD 6 posters across, by 3 rows
? HD 7 posters across, by 3 rows
o flat-16x9
? Image sizes: SD 140x70 HD 210x118
? SD 4 posters across, by 3 rows
? HD 5 posters across, by 3 rows
BIF Sizes
viewtopic.php?t=23520So here's one way to generate them:
% mkdir abc-sd abc-hd
% ffmpeg -i abc.mp4 -r .1 -s 240x180 abc-sd/%08d.jpg
% ffmpeg -i abc.mp4 -r .1 -s 320x240 abc-hd/%08d.jpg
% biftool -t 10000 abc-sd
% biftool -t 10000 abc-hd
