LTX 2.5 AIAI動画ツールCURATED•2026Turn text, images and audio into 4K video with sound using LTX 2.5 Browser AI video generator on Lightricks' LTX 2.5 open-weights model: text, image or audio to video, up to 4K at 50 fps with synced sound, clips up to 20 s詳細サイトへ