Album art dispalying in black and white

[NO_ob]

I have been getting some mp3s using the command

yt-dlp https://www.youtube.com/watch?v=YHDfpBwxeVU --ppa "ThumbnailsConvertor+FFmpeg_o:-c:v mjpeg -vf crop=\"'if(gt(ih,iw),iw,ih)':'if(gt(iw,ih),ih,iw)'\"" --embed-thumbnail -f bestaudio -x --audio-format mp3 --audio-quality 320k

Ive noticed that a lot of the album art display in black and white, this issue seems to be exclusive to rockbox as it doesn't happen in gnome or in the Sony E474 firmware, I have tested this on both an Ipod classic 6th gen and sony E474

[Dook]

It's probably whatever the command is doing with the image. If you're using linux, I recommend using an app like Ear Tag to save the album art, edit it in GIMP and then reapply it.

Resize it to around 320x320 px, and then export it as a non-progressive non-multiline jpeg.

[NO_ob]

Problem is im using this to download a playlist of like 200 files and set the video thumbnail as the image, guess ill try different ffmpeg settings

okay played around with it a little the size isn't a problem as 320px is still b/w opening that in gimp and saving as non progressive jpeg does make colors work just gotta find a way to make yt-dlp do it

[dconrad]

If it's being saved as progressive, then rockbox is definitely not using it at all, and instead using something else. Perhaps it's falling back to the image in the same folder, and that one is b&w? Or the other way around. Just a thought.

[NO_ob]

it loads from the file and is black and white no extra image in the folder, the way i saw changing from progressive to non progressive fixed colour was using the image viewer

[Frankenpod]

opening that in gimp and saving as non progressive jpeg does make colors work just gotta find a way to make yt-dlp do it

Pretty sure there are utilities that can mass convert all the images in a folder-tree from progressive jpg to normal jpg.  I did that at one point (at the same time as converting all the png album art, which also isn't RB-friendly).  Only had to do it as a one-off, though, and can't now remember what utility I used for it.  Some freeware/open-source art utility.

[NO_ob]

ill take a look at that, just been looking at the source for yt-dlp it is using ffmpeg to create the thumbnails and creating a jpeg using mjpeg2jpeg, maybe this isn't creating jepgs correctly? atleast for the rockbox decoder

https://www.ffmpeg.org/ffmpeg-bitstream-filters.html#mjpeg2jpeg

[NO_ob]

Managed to get working album art, it uses image magick to modify the thumbnail and then embeds it with eyeD3


yt-dlp -v --convert-thumb jpg --exec after_move:"magick -- %(thumbnails.-1.filepath)q -gravity Center -extent 1:1 %(thumbnails.-1.filepath)q && eyeD3 %(filepath)q --add-image %(thumbnails.-1.filepath)q:FRONT_COVER && rm %(thumbnails.-1.filepath)q" --write-thumb -x --audio-format mp3 --audio-quality 320k "https://www.youtube.com/watch?v=YHDfpBwxeVU"