Bulin 47 AI video: original audio, duration and resolution
The current public video format is 15 seconds, 720p and vertical MP4. Learn what original audio preservation does and does not prove.
The current public offer describes a 15-second, 720p vertical MP4 using the reference video’s original audio. Preserving the audio does not guarantee matching lip movement. Check the studio’s availability and displayed specification before submitting; the studio shows the current availability.
Duration and picture format
The public studio describes 15 seconds, 720p and a 9:16 aspect ratio. A validated internal sample measured 15.000 seconds at 720 × 1280 pixels. That is evidence about the measured sample, not a guarantee that every future task succeeds.
Internal experiments or unoffered settings are not additional public product promises. Use the options actually shown for your task and inspect the finished file. The workflow guide explains the submission sequence.
Does the clip contain original audio?
The workflow copies the prepared reference audio into the finished video rather than asking the video model to invent a new performance soundtrack. Internal validation found the accepted sample’s audio bytes matched the source audio. It does not use your portrait to generate your own voice.
Audio preservation and visual synchronization are different checks. Mouth shape, head position and motion can differ even when the original audio is unchanged. Listen and watch together before sharing.
What does it cost?
The current public 15-second, 720p offer uses 100 product credits per video. Check the displayed task cost and pack prices before purchasing. Video packs are one-time purchases, with no automatic renewal. A visible pack alone does not establish current generation availability; check the studio status.
A confirmed failed task returns its allowance; cash refunds follow the refund policy. A completed clip that misses a desired visual detail is not automatically the same as a failed technical task.
Can I publish the audio?
A file containing audio does not establish a license. Confirm the rights needed for the portrait, source performance, footage and soundtrack before publishing or using it commercially. This independent tool does not claim official affiliation. Read the quality limitations for further review guidance.