A processor obtains an input image containing both bright and dark regions. The processor obtains a threshold between a first pixel value and a second pixel value of the display. Upon detecting a region of the input image having an original pixel value above the threshold, the processor can create a data structure including a location of the region in the input image and an original pixel value of the region. The data structure occupies less memory than the input image. The display presents the input image including the region of the image having the original pixel value above the threshold. The processor sends the data structure to a camera, which records the presented image. The processor performing postprocessing obtains the data structure and the recorded image and increases dynamic range of the recorded image by modifying the recorded image based on the data structure.

Disclosed here are various techniques to increase dynamic range of an image recorded from a display. A processor performing preprocessing splits an input image containing both bright and dark regions into two images, image A containing bright regions, and image B containing dark regions. The display presents image A and image B in alternating fashion. Camera is synchronized with the display to record image A and image B independently. In postprocessing, a processor obtains the recorded images A and B. The processor increases the pixel value of the recorded image A to obtain image A with increased pixel value. Finally, the processor increases pixel value of the image recorded from the display by combining the first recorded image with increased pixel value and the second recorded image.

A processor obtains an input image containing both bright and dark regions. The processor obtains a threshold between a first pixel value and a second pixel value of the display. Upon detecting a region of the input image having an original pixel value above the threshold, the processor can create a data structure including a location of the region in the input image and an original pixel value of the region. The data structure occupies less memory than the input image. The display presents the input image including the region of the image having the original pixel value above the threshold. The processor sends the data structure to a camera, which records the presented image. The processor performing postprocessing obtains the data structure and the recorded image and increases dynamic range of the recorded image by modifying the recorded image based on the data structure.

A processor performing postprocessing obtains an input image containing both bright and dark regions. The processor obtains a threshold between a first pixel value of the virtual production display and a second pixel value of the virtual production display. The processor modifies the region according to predetermined steps producing a pattern unlikely to occur within the input image, where the pattern corresponds to a difference between the original pixel value and the threshold. The processor can replace the region of the input image with the pattern to obtain a modified image. The virtual production display can present the modified image. A processor performing postprocessing detects the pattern within the modified image displayed on the virtual production display. The processor calculates the original pixel value of the region by reversing the predetermined steps. The processor replaces the pattern in the modified image with the original pixel value.

A portable communication device supporting video calls is provided. The portable communication device can be configured to perform a video call on the basis of a first video codec and a first audio codec, receive, through a touch display, a request for recording the video call, and, if the first audio codec is not supported by a designated media container, record the video call on the basis of the first video codec and a second audio codec supported by the media container.

A portable communication device supporting video calls is provided. The portable communication device can be configured to perform a video call on the basis of a first video codec and a first audio codec, receive, through a touch display, a request for recording the video call, and, if the first audio codec is not supported by a designated media container, record the video call on the basis of the first video codec and a second audio codec supported by the media container.

A processor calibrates the camera by presenting an input image on the display to obtain a presented image. The camera, arbitrarily positioned relative to the display, records the presented image. The processor obtains the input image via a channel different from the display. The processor obtains an indication of a display region associated with the display. The processor determines an input image region corresponding to the display region, and a recorded image region corresponding to the display region. The processor obtains a first pixel value associated with the input image region and a second pixel value associated with the recorded image region. The processor determines a mapping between the first pixel value and the second pixel value, where applying the mapping to the second pixel value substantially produces the first pixel value. The processor stores an identifier associated with the recorded image region and the mapping.

A multimedia file and methods of generating, distributing and using the multimedia file are described. Multimedia files in accordance with embodiments of the present invention can contain multiple video tracks, multiple audio tracks, multiple subtitle tracks, data that can be used to generate a menu interface to access the contents of the file and ‘meta data’ concerning the contents of the file. Multimedia files in accordance with several embodiments of the present invention also include references to video tracks, audio tracks, subtitle tracks and ‘meta data’ external to the file. One embodiment of a multimedia file in accordance with the present invention includes a series of encoded video frames and encoded menu information.

A multimedia file and methods of generating, distributing and using the multimedia file are described. Multimedia files in accordance with embodiments of the present invention can contain multiple video tracks, multiple audio tracks, multiple subtitle tracks, data that can be used to generate a menu interface to access the contents of the file and ‘meta data’ concerning the contents of the file. Multimedia files in accordance with several embodiments of the present invention also include references to video tracks, audio tracks, subtitle tracks and ‘meta data’ external to the file. One embodiment of a multimedia file in accordance with the present invention includes a series of encoded video frames and encoded menu information.

An image providing system capable of quickly providing a plurality of different cropped images is disclosed. The image providing system acquires position information about a position of a user designated by the user. The image providing system determines a range of an image that was captured by an image capturing unit, the range corresponding to the position information as a cropping range, before the image capturing unit starts a series of image capturing in which the image capturing unit captures a plurality of images. After the series of image capturing is started, the system applies cropping that cuts out a part of a captured image based on the cropping range. During the series of image capturing, the system provides a cropped image to which the cropping has been applied in a way in which a user can obtain the cropped image.