and quite a lot of the cover art you can find automatically, irrespective of the number of pixels, is horribly scanned. And I really can't be bothered to scan all covers from my CDs (which is as much work as it sounds). Sounds nice but it's not easy to find this size on the net for every song/artist. Quote from: Hotsoup on 05:06:12 Typically I shoot for 1000 x 1000 pixels, max 250kb (all embedded). WebP/BPG cover art + Opus audio in an OGG container would be a good advancement.
#Amazon album art sizes mp4#
I think the "1 frame per cover art video" method used by some podcasts in the MP4 container (like Gareth Emery's Electric for Life podcast) is also only supported by the iPhone, but that particular podcast is still using MJPEG for storing the frames so no compression advancement either. But support for these formats as cover arts are nearly zero in player software/hardware. Some of them can't be compressed without visible blockiness into a 100kB JPEG file (not even with optimized JPEG compressors like mozjpeg), but smaller resolution also looks ugly on today's HD resolution smartphones when stretched to the display.Ī solution would be to use something more modern for lossy cover art than JPEG, like BPG (subset of H.265/HEVC intraframe coding), WebP, H.264/AVC still image profile. The pain with this is the varying complexity of cover arts.
when transcoding to lossy ask the transcoder app to embed folder.jpg into the audio files resolution i can find on the net) and a low quality cover art (folder.jpg, 900x900 max. keep a high quality (cover.jpg/png max.
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