An information processing apparatus generates index information including entire information and individual information, the entire information being information related to an entire recording medium as a recording destination of content including at least video data, the entire information including at least any of information related to resolution of video of the content recorded in the recording medium, information related to a codec, and information related to a luminance range, the individual information being information related to each of pieces of content recorded in the recording medium, the individual information including at least any of information related to resolution of video, information related to a codec, and information related to a luminance range, and then, controls to record the generated index information onto the recording medium.

Methods and systems are provided for video processing. Video may be captured using an image capture device at a first definition. The image capture device may optionally be, or may be on board, an aerial vehicle, such as an unmanned aerial vehicle. A first set of video data may be transmitted to a user terminal at a second definition, which may be less than the first definition. A user may interact with the user terminal to edit the video and generate a video edit request. The video edit request may be transmitted to the image capture device, which may accordingly produce a second set of video data in accordance with the video edit request, at a third definition. The third definition may be greater than the second definition.

In some implementations, a user device can be configured to create media messages with automatic titling. For example, a user can create a media messaging project that includes multiple video clips. The video clips can be generated based on video data and/or audio data captured by the user device and/or based on pre-recorded video data and/or audio data obtained from various storage locations. When the user device captures the audio data for a clip, the user device can obtain a speech-to-text transcription of the audio data in near real time and present the transcription data (e.g., text) overlaid on the video data while the video data is being captured or presented by the user device.

A recording medium is provided in which are recorded a stream file, including a first luminance video expressed by luminance of a first dynamic range, and a second luminance video expressed by luminance of a second dynamic range that is broader than the first dynamic range, and a playlist file for controlling playback of the stream file. The recording medium includes first and second combination information, representing combinations of first and second audio streams that each can be played at the same time in a same playback section with the first luminance video and the second luminance video, being described in the playlist file. The recording medium also includes the first audio streams that can be played at the same time with the first luminance video in this playback section being all listed in the first combination information.

A configuration is realized in which block encryption MMT format data is reproduced by applying a time stamp. An MMT format stream file and a reproduction control information file are generated and recorded in a medium. The stream file includes encryption block data to which an encryption key generated by using an additional header in which copy control information of a block unit is stored, as a seed, is applied, and the additional header. Position identification information capable of determining a position of reproduction data, a position of the seed to be applied to decoding of the reproduction data, a position of the time stamp, and a position of the seed to be applied to decoding of the time stamp is recorded in the reproduction control information file. Data decoding, and reproduction to which the time stamp is applied are performed by using recording information.

An object is to make it possible to perform caption display satisfactorily in a case where the caption display position is designated as a relative position. The video stream is decoded to obtain video data, and the subtitle stream including the caption information is decoded to obtain bitmap data of the caption. The caption display position in the caption display position information included in the caption information is designated as a relative position with respect to the caption display range. In a case where the aspect ratio of the video area is different from the aspect ratio of the display video area, the caption display position is determined with the display video area defined as the caption display range, further resize processing is performed, and the display position control is performed onto the bitmap data of the caption on the basis of the caption display position that has undergone the resize processing. Bitmap data of the caption that has undergone display position control is superimposed on the video data to obtain display video data.

Subtitles can be satisfactorily displayed at the time of RAP reproduction and at the time of variable-speed reproduction. A video stream that includes a video packet in which a payload has coded image data is generated. A subtitle stream that includes a subtitle packet in which a payload has subtitle information is generated. A multiplexed stream that includes a container packet obtained by packetizing the video stream and the subtitle stream is generated and transmitted. Into a header of a specific container packet in which a payload includes a first byte of the subtitle packet, first identification information indicating that the payload includes the first byte is inserted. For example, this first identification information further indicates a priority of subtitle displaying based on subtitle information contained in the subtitle packet having the first byte included in the payload of the specific container packet.

A decoding system decodes a video stream, which is encoded video information. The decoding system includes a decoder that acquires the video steam and generates decoded video information, a maximum luminance information acquirer that acquires maximum luminance information indicating the maximum luminance of the video stream from the video stream, and an outputter that outputs the decoded video information along with the maximum luminance information. In in a case where the video stream includes a base video stream and an enhanced video stream, the decoder generates base video information by decoding the base video stream, an enhanced video information by decoding the enhanced video stream, and generates the decoded video information based on the base video information and the enhanced video information, and the outputter outputs the decoded video information, along with the maximum luminance information.

Real-time metadata tracks recorded to media streams allow search and analysis operations in a variety of contexts. Search queries can be performed using information in real-time metadata tracks such as closed captioning, sub-title, statistical tracks, miscellaneous data tracks. Media streams can also be augmented with additional tracks. The metadata tracks not only allow efficient searching and indexing, but also allow insertion of content specific advertising during appropriate portions of a media stream based on the content of the metadata tracks.

A decoding method of a video stream, which is encoded video information. The video stream includes a base video stream, and an enhanced video stream, which is a video stream to enhance luminance of the base video stream, and a describer that contains the combination information of the base video stream and the enhanced video stream. The decoding method includes acquiring the describer, and identifying the combination of the base video steam and the enhanced video stream. The decoding method also includes generating base video information by decoding the base video stream, generating enhanced video information by decoding the enhanced video stream, generating decoded video information based on the base video stream and the enhanced video stream, and outputting the decoded video information.