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7ae3d69e00
The current implementation of `JpegMotionPhotoExtractor.sniff` returns `true` for any image with Exif data (not just motion photos). Improving this is tracked by b/324033919. In the meantime, when we 'extract' a non-motion photo with `JpegMotionPhotoExtractor`, the result is currently a single empty image track and no video track (since there's no video, since this isn't a motion photo). This 'empty' image track is usually used to transmit metadata about the video parts of the image file (in the form of `MotionPhotoMetadata`), but this metadata is also (understandably) absent for non-motion photos. Therefore there's no need to emit this image track at all, and it's clearer to emit no tracks at all when extracting a non-motion photo using `JpegMotionPhotoExtractor`. This change also removes a `TODO` that is misplaced, since there's no image bytes being emitted here (and never was). PiperOrigin-RevId: 604688053 |
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