CN111953919A - Video recording method and device of handheld terminal in video single call - Google Patents
Video recording method and device of handheld terminal in video single call Download PDFInfo
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- CN111953919A CN111953919A CN201910416676.1A CN201910416676A CN111953919A CN 111953919 A CN111953919 A CN 111953919A CN 201910416676 A CN201910416676 A CN 201910416676A CN 111953919 A CN111953919 A CN 111953919A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/147—Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0117—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal
- H04N7/0122—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal the input and the output signals having different aspect ratios
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/142—Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
- H04N2007/145—Handheld terminals
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- Engineering & Computer Science (AREA)
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- Signal Processing (AREA)
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Abstract
The application discloses a video recording method and a device of a handheld terminal in video single call, wherein the method comprises the following steps: in the process of carrying out video single call service between the handheld terminal and the large-screen terminal, when the handheld terminal is held by a transverse screen, the image output by the camera of the terminal is cut according to a portrait mode to generate video data output to an opposite terminal. By the technical scheme, the picture output when the handheld terminal is held in a transverse screen mode can be correctly displayed on the large-screen terminal.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for recording a video of a handheld terminal in a video call.
Background
Currently, the Btrunc standard defines the signaling flow of a video call (video call is made one-to-one), but the media processing of the video call is not described.
The inventor discovers that in the process of implementing the invention: in the video single call, the picture displayed on the large-screen terminal is inconsistent with the picture actually presented by the shot object in some scenes. The specific analysis is as follows:
the types of terminals participating in the call in the video single call scene are divided into two types, namely a handheld terminal and a large-screen terminal. The handheld terminal is usually a mobile phone and is a vertical screen device (the width-to-height ratio of the screen is generally 9: 16), the terminal is small and exquisite, and a user can rotate the terminal freely; the large-screen terminal comprises a dispatching Desk (DC) and a video conference terminal, which are horizontal-screen devices (the aspect ratio of the screen is generally 16: 9), and the terminal screen is very large and is fixed and can not rotate.
Due to the difference of the screens, the two types of terminals have the following different requirements on the screen when the video calls in a single call mode:
for handheld terminals, it is desirable that the picture be vertical (aspect ratio is typically 9: 16) to enable full screen display, limited to the screen size, and the video resolution need not be too high, D1.
For large screen terminals, it is desirable that the picture is horizontal (aspect ratio is typically 16: 9) to enable full screen display, since the screen is large and requires high definition video resolution, such as 1080P.
At present, when a camera is installed on a handheld terminal, considering that output pictures of the camera are wide-screen pictures in Landscape mode (i.e. width is larger than height, i.e. 16: 9), which are inconsistent with requirements of a vertical full-screen display picture of the handheld terminal, in order to enable pictures collected by the camera to be matched with a screen of the handheld terminal and meet requirements of the vertical full-screen display picture (i.e. pictures collected by the camera can be displayed on the vertical screen of the handheld terminal in full-screen mode), installation angles of the camera are 90 degrees, so that pictures recorded and output by the camera are 'lying down' pictures (i.e. pictures displayed after an actually shot object rotates 90 degrees on a vertical plane, in order to be displayed correctly when a video is played, camera software of the handheld terminal sets a rotation angle in an output recorded video file, a player reads the rotation angle to perform corresponding picture rendering rotation, the rotated picture can be consistent with the picture of the actual shot scene, and the aim of correctly displaying the full screen on the vertical screen is fulfilled. As shown in fig. 1, the recording preview effect seen by the user is the left picture in the figure, and the picture recorded and output by the camera is the right picture in the figure, which is a "lying down" picture.
Fig. 2 is a schematic diagram showing a video recording and displaying process in a scene where a handheld terminal records a video in a conventional video call-only scheme. When the handheld terminal records in the vertical screen, the adopted output mode is a portrait mode (width is less than height, namely 9: 16). As shown in fig. 2, in order to make the opposite end see an upright picture (i.e. the picture is consistent with the picture actually presented by the subject), the handheld terminal rotates the picture taken by the camera by 90 degrees, changes the inverted picture in the Landscape mode into an upright picture in the portal mode (see fig. 3 on the left side of fig. 2), and outputs the upright picture to the opposite end.
According to the types of the calling and called terminals in the video single call, the application scenes of the video single call can be divided into two categories, one is the video single call between the handheld terminal and the handheld terminal, and the other is the video single call between the handheld terminal and the large-screen terminal.
Fig. 3 and fig. 4 respectively show schematic diagrams of the two types of video single call application scenarios, in which, in order to show the video display effect of 2 terminals participating in a call, the two scenarios are shown in left and right 2 diagrams, a → B indicates that the screen recorded by the terminal a is displayed on the terminal B, and a ← B indicates that the screen recorded by the terminal B is displayed on the terminal a):
as shown in fig. 3, for a single video call between a handheld terminal and a handheld terminal, only when the handheld directions of the two terminals are consistent (fig. 1 and 3 in fig. 3), the pictures seen by both terminals are normal, and if the handheld directions are not consistent (fig. 2 in the figure), the pictures seen by the other terminals are rotated in a reverse direction.
Since the user can easily rotate the handheld terminal, the video call between the handheld terminal and the handheld terminal can be easily adjusted to the optimal state by the user.
Fig. 4 shows a schematic diagram of the display effect of the two terminals when a video call is made between the handheld terminal and the large-screen terminal.
For video single call between the handheld terminal and the large-screen terminal, when the handheld terminal is held vertically, the terminals of both sides can display upright pictures (as shown in the 1 st line of the graph in fig. 4), and when the handheld terminal is held horizontally, the pictures output by the large-screen terminal can be correctly displayed on the handheld terminal, but for the pictures in the portal mode output by the handheld terminal, the large-screen terminal cannot rotate, so that the pictures displayed by the large-screen terminal are the pictures with real scenes rotated by 90 degrees (as shown in the 2 nd picture on the left of the 2 nd line of fig. 4).
Therefore, in the existing video single-call scheme between the handheld terminal and the large-screen terminal, when the handheld terminal is held horizontally, the large-screen terminal cannot present upright pictures, so that the pictures output by the handheld terminal cannot be correctly displayed on the large-screen terminal.
Disclosure of Invention
The application provides a video recording method and device for a handheld terminal in video single call, which can ensure that an image output when the handheld terminal is held by a transverse screen can be correctly displayed on a large-screen terminal.
The application discloses a video recording method of a handheld terminal in video single call, which comprises the following steps:
in the process of carrying out video single call service between the handheld terminal and the large-screen terminal, when the handheld terminal is held by a transverse screen, the image output by the camera of the terminal is cut according to a portrait mode to generate video data output to an opposite terminal.
Preferably, generating the video data output to the opposite terminal by clipping the image output by the camera of the terminal according to the portrait mode includes:
and when the image output by the camera is a front vertical image, cutting the image into an image in a portrait mode, and taking the cut image as video data output to an opposite end.
Preferably, generating the video data output to the opposite terminal by clipping the image output by the camera of the terminal according to the portrait mode further includes:
when the image output by the camera is an inverted image, the image is cut into an image in a portrait mode, the cut image is rotated by 180 degrees to obtain a corresponding upright image, and the rotated image is used as video data output to an opposite end.
The application also discloses a video recording device, sets up in handheld terminal, includes: a processor to: in the process of carrying out video single call service between the handheld terminal and the large-screen terminal, when the handheld terminal is held by a transverse screen, the image output by the camera of the terminal is cut according to a portrait mode to generate video data output to an opposite terminal.
Preferably, the processor is specifically configured to generate video data output to an opposite end by performing cropping processing on an image output by the terminal camera according to a portrait mode, and includes:
and when the image output by the camera is a front vertical image, cutting the image into an image in a portrait mode, and taking the cut image as video data output to an opposite end.
Preferably, the processor is further specifically configured to generate video data output to an opposite terminal by performing cropping processing on an image output by the terminal camera according to a portrait mode, and the method includes:
when the image output by the camera is an inverted image, the image is cut into an image in a portrait mode, the cut image is rotated by 180 degrees to obtain a corresponding upright image, and the rotated image is used as video data output to an opposite end.
The present application also discloses a non-transitory computer readable storage medium storing instructions that, when executed by a processor, cause the processor to perform the steps of the video recording method as previously described.
The application also discloses an electronic device comprising the non-volatile computer-readable storage medium as described above, and the processor having access to the non-volatile computer-readable storage medium.
According to the technical scheme, the video recording method and the video recording device for the handheld terminal in the video single call process, in the process of carrying out the video single call service on the handheld terminal and the large-screen terminal, the landscape mode image directly output by the camera is cut according to the portrait mode aiming at the scene that the handheld terminal is held by the transverse screen. Therefore, on one hand, the requirement that the handheld terminal outputs the image according to the portrait mode can be met, on the other hand, the image output to the large-screen terminal when the handheld terminal is held by the transverse screen can be ensured to be a vertical picture, and the problem that the picture output when the handheld terminal is held by the transverse screen cannot be correctly displayed on the large-screen terminal is effectively solved.
Drawings
FIG. 1 is a schematic diagram of an output picture of a camera on a handheld terminal and a corresponding picture effect displayed on a terminal screen;
fig. 2 is a schematic diagram illustrating a video recording and displaying process at a handheld terminal side in a conventional video call-only scheme;
FIG. 3 is a schematic diagram of the display effect of the two terminals when a video call is made between the handheld terminal and the handheld terminal;
FIG. 4 is a schematic diagram of the display effect of the two terminals when a video single call is made between the handheld terminal and the large-screen terminal;
fig. 5 is a schematic view of a video recording process when a handheld terminal is held in a landscape mode according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below by referring to the accompanying drawings and examples.
The embodiment of the invention discloses a video recording method of a handheld terminal in video single call, which specifically comprises the following steps:
in the process of carrying out video single call service between the handheld terminal and the large-screen terminal, when the handheld terminal is held by a transverse screen, the image output by the camera of the terminal is cut according to a portrait mode to generate video data output to an opposite terminal.
The method is different from the prior scheme in that in the process of carrying out the video single call service between the handheld terminal and the large-screen terminal, the landscape mode image directly output by the camera needs to be cut according to the portrait mode aiming at the scene that the handheld terminal is held by the transverse screen. Here, as described in the background section, when the handheld terminal is held by a landscape screen, an image captured by the camera is an upright screen, and therefore, on the basis of the upright screen, cropping is directly performed in the portrait mode without performing rotation processing, and an upright screen that meets the requirement (portrait mode) of the existing handheld terminal output mode can be obtained. Therefore, the picture output to the large-screen terminal when the handheld terminal is held by the transverse screen is upright, so that the picture output when the handheld terminal is held by the transverse screen can be correctly displayed on the large-screen terminal, and the problem that the upright picture cannot be displayed on the large-screen terminal when the handheld terminal is held by the transverse screen is effectively solved.
Preferably, in consideration of two handheld modes of a user in a horizontal screen in practical application, one mode is that the camera is upright and the output image is also an upright picture, and the other mode is that the camera is inverted and the output image is also an inverted picture, for the two situations, the handheld terminal may specifically adopt the following methods to perform clipping processing according to a portrait mode to generate video data output to the opposite terminal:
and when the image output by the camera is a front vertical image, cutting the image into an image in a portrait mode, and taking the cut image as video data output to an opposite end.
When the image output by the camera is an inverted image, the image is cut into an image in a portrait mode, the cut image is rotated by 180 degrees to obtain a corresponding upright image, and the rotated image is used as video data output to an opposite end.
In the method, when the image output by the camera is an inverted image, the image is rotated by 180 degrees by the handheld terminal to obtain an upright image. In practical application, the handheld terminal can also be switched to a landscape handheld mode by reminding a user to enable an image output by the camera to be a standing picture, and a suitable processing mode can be specifically selected by a person skilled in the art.
Fig. 5 is a schematic diagram of a video recording process when the handheld terminal is held in a landscape mode by using the method embodiment. As shown in fig. 5: the original output pictures of the camera are all in Landscape (Landscape) mode, and in order to enable the handheld terminal to output the upright pictures in Portrait mode, the original pictures shot by the camera are cut (see the 3 rd picture on the left side) and changed into pictures in Portrait mode. When the Home key is held in the right landscape (see left row 1), the camera does not need to be rotated because it is upright. And when the Home key is held towards the left horizontal screen (see the left 2 nd row), the camera is inverted, so that the camera is rotated by 180 degrees.
The application also discloses a video recording device, sets up in handheld terminal, includes: a processor to: in the process of carrying out video single call service between the handheld terminal and the large-screen terminal, when the handheld terminal is held by a transverse screen, the image output by the camera of the terminal is cut according to a portrait mode to generate video data output to an opposite terminal.
Preferably, the processor is specifically configured to generate video data output to an opposite end by performing cropping processing on an image output by the terminal camera according to a portrait mode, and includes:
and when the image output by the camera is a front vertical image, cutting the image into an image in a portrait mode, and taking the cut image as video data output to an opposite end.
Preferably, the processor is further specifically configured to generate video data output to an opposite terminal by performing cropping processing on an image output by the terminal camera according to a portrait mode, and the method includes:
when the image output by the camera is an inverted image, the image is cut into an image in a portrait mode, the cut image is rotated by 180 degrees to obtain a corresponding upright image, and the rotated image is used as video data output to an opposite end.
Further, the present application provides a non-transitory computer readable storage medium storing instructions that, when executed by a processor, cause the processor to perform the steps of the video recording method as described above.
Further, the present application provides an electronic device comprising the non-volatile computer-readable storage medium as described above, and the processor having access to the non-volatile computer-readable storage medium.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (8)
1. A video recording method of a handheld terminal in a video single call is characterized by comprising the following steps:
in the process of carrying out video single call service between the handheld terminal and the large-screen terminal, when the handheld terminal is held by a transverse screen, the image output by the camera of the terminal is cut according to a portrait mode to generate video data output to an opposite terminal.
2. The method of claim 1, wherein: the method for generating video data output to an opposite terminal by cutting an image output by a camera of the terminal according to a portrait mode comprises the following steps:
and when the image output by the camera is a front vertical image, cutting the image into an image in a portrait mode, and taking the cut image as video data output to an opposite end.
3. The method of claim 2, wherein: the method for generating the video data output to the opposite terminal by cutting the image output by the terminal camera according to the portrait mode further comprises the following steps:
when the image output by the camera is an inverted image, the image is cut into an image in a portrait mode, the cut image is rotated by 180 degrees to obtain a corresponding upright image, and the rotated image is used as video data output to an opposite end.
4. A video recording device is arranged in a handheld terminal and is characterized by comprising: a processor to:
in the process of carrying out video single call service between the handheld terminal and the large-screen terminal, when the handheld terminal is held by a transverse screen, the image output by the camera of the terminal is cut according to a portrait mode to generate video data output to an opposite terminal.
5. The apparatus of claim 4, wherein the processor is specifically configured to: the method for generating video data output to an opposite terminal by cutting an image output by a camera of the terminal according to a portrait mode comprises the following steps:
and when the image output by the camera is a front vertical image, cutting the image into an image in a portrait mode, and taking the cut image as video data output to an opposite end.
6. The apparatus of claim 5, wherein the processor is further specific to: the method for generating video data output to an opposite terminal by cutting an image output by a camera of the terminal according to a portrait mode comprises the following steps:
when the image output by the camera is an inverted image, the image is cut into an image in a portrait mode, the cut image is rotated by 180 degrees to obtain a corresponding upright image, and the rotated image is used as video data output to an opposite end.
7. A non-transitory computer readable storage medium storing instructions which, when executed by a processor, cause the processor to perform the steps of the video recording method of any of claims 1 to 3.
8. An electronic device comprising the non-volatile computer-readable storage medium of claim 7, and the processor having access to the non-volatile computer-readable storage medium.
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| CN201910416676.1A CN111953919B (en) | 2019-05-17 | 2019-05-17 | Video recording method and device of handheld terminal in video single call |
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