CN104427261A - Audio-visual post-production method and audio-visual recording device - Google Patents

Abstract

The present invention provides a video post-production method and a video recording device. The video post-production method is suitable for the video recording device. The video post-production method includes receiving a first image file and a sound file corresponding to a time axis. Obtaining a first time segment of the first image file corresponding to the time axis. And merging the first image file and the sound file into a first video file according to the first time segment and the time axis. The video recording device includes a photosensitive unit, a sound input unit and a video processing unit. The video recording device is used to execute the video post-production method.

Description

Audio-visual post-production method and audio-visual recording device

technical field

The present invention relates to an audio-visual post-production method and an audio-video recording device, in particular to an audio-visual post-production method and an audio-video recording device suitable for processing multiple images in time-lapse photography.

Background technique

Most of today's digital photography equipment can support the continuous shooting function. The so-called continuous shooting function means that the user sets the number of shots or the time for continuous shooting. However, storage devices used in digital photography equipment, such as memory cards, flash drives or external hard disks, have lower production costs and higher storage capacities. Therefore, the continuous shooting function of the digital photography subject is gradually transformed into a time-lapse photography (Time lapse) of a long time and a large number of images.

Time-lapse photography is to capture images sequentially according to a fixed time or an irregular time during a long period of time. Therefore, the images generated in the time-lapse photography all correspond to the time axis. Moreover, in addition to video capture, the time-lapse photography can also record the sound of the scene.

Because a large number of images produced by time-lapse photography are continuous, just like the frame of a movie, and the quality of time-lapse photography is based on the settings of digital photography equipment, so these images can often have Ultra-high picture quality and resolution. However, in order to combine a large number of images and sound files produced by time-lapse photography, it is often necessary to compare the time of a large number of images one by one during post-production to correspond to the sound files.

However, such a corresponding method often takes a lot of cost and time. When the number of images generated by the time-lapse photography is too large, the post-production processing for the user to compare the time of the images and sounds becomes more complicated. Therefore, there is still room for improvement in the method for generating a video corresponding to a large number of video and audio files generated by time-lapse video.

Contents of the invention

In view of the above problems, the present invention proposes an audio-visual post-production method and an audio-visual recording device, so that when merging the video files and audio files generated by time-lapse photography, the audio files can be effectively corresponding to increase the convenience of post-production .

The invention provides an audio-visual post-production method, which is suitable for an audio-visual recording device. The audio-video post-production method includes the following steps. A first video file and a sound file corresponding to the time axis are received. A first time segment corresponding to the time axis of the first image file is acquired. And according to the first time segment and the time axis, merge the first video file and the sound file into the first video file.

In an embodiment of the present invention, the above-mentioned first image file is selected from a collection of multiple pictures, photos and videos captured by the audio-visual recording device and sorted according to the time axis.

In an embodiment of the present invention, the above video and audio post-production method further includes the following steps. A second image file corresponding to the time axis is received, and the second image file is adjacent to the first image file on the time axis. A second time segment corresponding to the time axis of the second image file is acquired. And according to the second time zone and the time axis, the second video file and the sound file are merged into a second video file, wherein the second video file follows the first video file.

In an embodiment of the present invention, the above-mentioned first time zone and the second time zone respectively include a start time point and an end time point, and the end time point of the first time zone is the same as the start time of the second time zone point.

The invention provides an audio-visual recording device, which includes a photosensitive unit, a sound input unit and an audio-visual processing unit. The photosensitive unit is used to capture the first image file, and the sound input unit is used to record the sound file. The audio-visual processing unit is coupled to the photosensitive unit and the sound input unit. The audio-visual processing unit receives the first image file and the audio file corresponding to the time axis, obtains the first time segment of the first image file, and the first time segment corresponds to the time axis, and According to the first time segment and the time axis, the first video file and the sound file are merged into a first video file.

In an embodiment of the present invention, the above-mentioned first image file is a picture, a photo or a video.

In an embodiment of the present invention, the photosensitive unit also receives a second image file corresponding to the time axis, and receives the second image file corresponding to the time axis, and the second image file is acquired after the first image file adjacent to the time axis The second image file corresponds to the second time segment of the time axis, and the second time segment and the time axis merge the second image file and the sound file into a second audio-visual file, wherein the second audio-visual file follows the first audio-visual file .

In an embodiment of the present invention, the above-mentioned first time zone and the second time zone respectively include a start time point and an end time point, and the end time point of the first time zone is the same as the start time of the second time zone point.

The audio-visual post-production method and the audio-visual recording device provided by the present invention use the audio-visual processing unit to receive the first video file and the audio file corresponding to the time axis, and obtain the first time segment corresponding to the time axis of the first video file. Then, according to the first time segment and the time axis, the first video file and the audio file are merged into a first video file. The audio-video processing unit can further receive a second image file corresponding to the time axis, and the second image file is after the first image file adjacent on the time axis. In addition, the video-audio processing unit obtains a second time segment corresponding to the time axis of the second video file, and merges the second video file and the audio file into the second video-audio file according to the second time segment and the time axis. Wherein, the second audio-visual file follows the first audio-visual file. In this way, when it is necessary to combine video files and audio files from a large number of video files to generate audio-visual files, the synchronous correspondence can be effectively and quickly performed, so as to increase the convenience of generating audio-visual files.

The above descriptions about the content of the present invention and the following descriptions of the implementation modes are used to demonstrate and explain the spirit and principle of the present invention, and provide further explanations of the patent application scope of the present invention.

Description of drawings

FIG. 1 is a block diagram of an audio-visual recording device according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an example of an audio-visual post-production method according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an example of an audio-visual post-production method according to another embodiment of the present invention;

FIG. 4 is a flowchart of a video and audio post-production method according to an embodiment of the present invention;

FIG. 5 is a flow chart of a video and audio post-production method according to another embodiment of the present invention.

Among them, reference signs:

1 audio and video recording device

11 photosensitive unit

12 sound input unit

13 AV processing unit

20 image collection

201, 202 First image file

203 Second image file

21 Timeline

211, 213 start time

212, 214 end time point

215 points in time

22 sound files

Detailed ways

The detailed features and advantages of the present invention are described in detail below in the embodiments, which are sufficient to enable any person familiar with the relevant art to understand the technical content of the present invention and implement it accordingly, and according to the content provided by this specification, the scope of the patent application and the drawings , anyone skilled in the relevant art can easily understand the related objects and advantages of the present invention. The following examples further illustrate the concept of the present invention in detail, but do not limit the scope of the present invention in any way.

Please refer to FIG. 1 , which is a block diagram of an audio and video recording device according to an embodiment of the present invention. The video recording device 1 includes a photosensitive unit 11 , a voice input unit 12 and a video processing unit 13 . The light-sensing unit 11 is, for example, a light-sensing element of a digital camera or a video camera, and is used for taking pictures of a target to generate a first image file. The sound input unit 12 is used to collect the sound of the target to generate a sound file, and the sound input unit 12 is, for example, a recording component installed on the audio-visual recording device 1 . The video-audio processing unit 13 is, for example, a central processing unit, and is coupled to the photosensitive unit 11 and the audio input unit 12 .

The video and audio processing unit 13 is used for receiving the first video file and audio file corresponding to the time axis. The format of the first image file is, for example, a format such as Joint Photographic Expert Group (JPEG), bitmap (Bitmap, BMP) or raw image file (raw). The format of the audio file is, for example, Waveform audio format (WAV) or Motion Picture Experts Group-1 or Motion Picture Experts Group-2 Audio Layer III (MPEG-1 or MPEG-2 Audio Layer III, MP3).

Next, the video-audio processing unit 13 obtains a first time segment of the first video file, and the first time segment corresponds to a time axis. The first time period includes a start time point and an end time point. The starting time point is the file creation time of the first image file, that is, the time of capturing at that time. The end time point is the time when the first video file ends and the next video file following the first video file starts.

Afterwards, the audio-video processing unit 13 merges the first video file and the audio file into a first video-audio file according to the first time segment and the time axis. The video-audio processing unit 13 takes the start time point and the end time point in the first time segment as a reference, and extracts the audio clip files corresponding to the time axis from the sound file that match the start time point and the end time point. Next, the video-audio processing unit 13 merges the audio clip file and the first video file, and repeatedly fills the first video file according to the frames per second (FPS) of the video file to generate the first video file.

The above description is only for the implementation of the single image file of the first image file, but the present invention is not limited thereto, and another example will be given below for illustration. The video-audio processing unit 13 can also receive a second video file corresponding to the time axis, and the second video file is adjacent to the first video file on the time axis. The second image file is also captured by the photosensitive unit 11 of the audio-visual recording device 1 , and its detailed format and content are the same as those of the first image file, so details will not be repeated here.

Next, the video-audio processing unit 13 obtains a second time segment corresponding to the time axis of the second video file, and the second time segment also includes a start time point and an end time point. Wherein, the start time point of the second time segment is the same as the end time point of the first time segment of the first video file, and the end time point is the end of the second video file and the start of the next video file following the second video file time.

Finally, the audio-video processing unit 13 merges the second video file and the audio file into a second video-audio file according to the second time zone and time axis, and the second video-audio file will follow the above-mentioned first video-audio file.

Please refer to FIG. 2 , which is a schematic diagram of an example of an audio-visual post-production method according to an embodiment of the present invention. Assume that the image set 20 includes the first image file 201 as an example, and the image set 20 is generated by time-lapse photography of the photosensitive unit 11 of the audio-visual recording device 1 , and the image set 20 corresponds to the time axis 21 . The audio file 22 is also generated after being recorded by the audio input unit 12 of the video recording device 1 , and the audio file 22 is represented by a waveform.

First, the video-audio processing unit 13 receives the first video file 201 and the audio file 22 corresponding to the time axis 21 . Next, the video-audio processing unit 13 obtains a first time segment of the first video file 201 , and the first time segment corresponds to the time axis 21 . The first time segment includes a start time point 211 and an end time point 212 . The start time point 211 is the file creation time of the first image file 201 , that is, the time when the capture starts. The end time point 212 corresponds to, for example, the file creation time of the next image file following the first image file 201 . Finally, the video and audio processing unit 13 merges the first video file 201 and the audio file 22 into a video and audio file according to the first time segment and the time axis 21 . For example, the audio-visual processing unit 13 takes the start time point 211 and the end time point 212 in the first time segment as a reference, and extracts the sound clips corresponding to the start time point 211 and the end time point 212 from the sound file 22 corresponding to the time axis 21 document. Next, merge the sound segment file and the first image file 201, and repeatedly fill in the first image file 201 and the merged corresponding information in the first time section according to the display frames per second (frames per second, FPS) of the audio-visual file. Sections of the audio file 22 to generate the first video file.

Please refer to FIG. 3 , which is an exemplary schematic diagram of an audio-video post-production method according to another embodiment of the present invention. Assume that the image set 20 is illustrated by taking the first image file 202 and the second image file 203 as an example, and the image set 20 is generated after time-lapse photography by the photosensitive unit 11 of the audio-visual recording device 1, and the image set 20 corresponds to the time axis 21. The audio file 22 is also generated after being recorded by the audio input unit 12 of the video recording device 1 , and the audio file 22 is represented by a waveform.

Next, the video-audio processing unit 13 receives the first video file 202 and the second video file 203 corresponding to the time axis 21 . The video-audio processing unit 13 then obtains the first video file 202 and the second video file 203 respectively corresponding to the first time segment and the second time segment of the time axis 21 . The first time segment is a segment of the first image file 202 corresponding to the time axis 21 , and the second time segment is a segment of the second image file 203 corresponding to the time axis 21 . The first time zone and the second time zone include the start time point 213 of the first time zone and the end time point 214 of the second time zone, and the end time point of the first time zone is consistent with the second time zone The start time points of the segments are the same, which is the time point 215 on the time axis 21 . The start time point 213 is the file creation time of the first image file 202 , that is, the time when the first image file 202 is captured at that time. The end time point 214 is the file creation time of the next image file on the time axis 21 relative to the second image file 203 , which is the end time point 214 of the second image file 203 .

Finally, the audio-video processing unit 13 merges the first video file 202 and the audio file 22 into a first video-audio file according to the first time segment and the time axis 21 . Next, the audio-video processing unit 13 merges the second video file 203 and the audio file 22 into a second video-audio file according to the second time segment and the time axis 21 . The detailed merging method is that the audio-visual processing unit 13 takes the first time zone and the second time zone as a benchmark, and correspondingly corresponds to the time axis 21 to extract the sound clips corresponding to the first time zone and the second time zone from the sound file 22 document. Next, the audio clip file is combined with the first video file 202 and the second video file 203 respectively. When the video-audio processing unit 13 merges, the video-video processing unit 13 first obtains the preset display frames per second of the first video-video file and the second video-video file. Next, the video-audio processing unit 13 fills in the first video file 202 according to the number of display frames per second, and at the same time corresponds to the section of the audio file 22 to generate the first video-video file. Next, the video-audio processing unit 13 fills in the second video file 203 according to the number of display frames per second, and at the same time merges the sections corresponding to the audio file 22 to generate the second video-video file. Moreover, the second audio-visual file follows the first audio-visual file.

Based on the description of the above embodiments, a video and audio post-production method can be summarized. Please refer to FIG. 4 , which is a flow chart of an audio-video post-production method according to an embodiment of the present invention. The audio-video post-production method of this embodiment is applicable to an audio-video recording device. In step S401, a first video file and a sound file corresponding to a time axis are received. In step S402, a first time segment of the first image file is obtained, and the first time segment corresponds to a time axis. In step S403, according to the first time segment and the time axis, the first video file and the audio file are merged into a first video file.

Please refer to FIG. 5 , which is a flow chart of an audio-video post-production method according to another embodiment of the present invention. In step S501, a first video file and a sound file corresponding to a time axis are received. In step S502, a second image file corresponding to the time axis is received, and the second image file is adjacent to the first image file on the time axis. In step S503, a first time segment corresponding to the time axis of the first image file is obtained. In step S504, a second time segment corresponding to the time axis of the second image file is obtained. In step S505, according to the first time segment, the second time segment and the time axis, merge the segments of the first video file, the second video file and the corresponding audio file into the first video file and the second video file, And the second audio-visual file follows the first audio-visual file.

The audio-visual post-production method and the audio-visual recording device provided by the present invention use the audio-visual processing unit to receive the first video file and the audio file corresponding to the time axis, and obtain the first time segment corresponding to the time axis of the first video file. Then, according to the first time segment and the time axis, the first video file and the audio file are merged into a first video file. In addition, the video-audio processing unit may further receive a second video file corresponding to the time axis, and the second video file is adjacent to the first video file on the time axis. The video-audio processing unit obtains a second time segment corresponding to the time axis of the second video file, and merges the second video file and the audio file into a second video-audio file according to the second time segment and the time axis. Wherein, the second audio-visual file follows the first audio-visual file. In this way, when it is necessary to combine video files and audio files from a large number of video files to generate audio-visual files, the synchronous correspondence can be effectively and quickly performed, so as to increase the convenience of generating audio-visual files.

Of course, the present invention can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the present invention without departing from the spirit and essence of the present invention. All changes and deformations should belong to the protection scope of the appended claims of the present invention.

Claims (8)

1. an audio-visual rear method processed, is suitable for an audio-visual camera device, it is characterized in that, this audio-visual rear method processed comprises:

Receive one first image file and an audio files of a corresponding time shaft;

Obtain this first image file to should a very first time section of time shaft; And

According to this very first time section and this time shaft, merge this first image file and this audio files is one first audio/video file.

2. audio-visual rear method processed according to claim 1, is characterized in that, selects in the set of plurality of pictures, photo and image that this first image file sorts according to this time shaft.

3. audio-visual rear method processed according to claim 1, is characterized in that, also comprise:

Receive should one second image file of time shaft, this second image file be on this time shaft after this first image file adjacent;

Obtain this second image file to should one second time section of time shaft; And

According to this second time section and this time shaft, merge this second image file and this audio files is this second audio/video file, after wherein this second audio/video file is connected in this first audio/video file.

4. audio-visual rear method processed according to claim 3, it is characterized in that, this very first time section and this second time section comprise time point and end time point at the beginning respectively, and this end time of this very first time section point is same as this sart point in time of this second time section.

5. an audio-visual camera device, is characterized in that, comprising:

One photosensitive unit, in order to capture one first image file;

One Speech input unit, in order to record an audio files; And

One video process unit, couple this photosensitive unit, this Speech input unit, this video process unit receives this first image file and this audio files of a corresponding time shaft, obtain a very first time section of this first image file, this very first time section is to should time shaft, and according to this very first time section and this time shaft, merge this first image file and this audio files is one first audio/video file.

6. audio-visual camera device according to claim 5, is characterized in that, this first image file is a picture, a photo or an image.

7. audio-visual camera device according to claim 5, it is characterized in that, this photosensitive unit also receives should one second image file of time shaft, receive should one second image file of time shaft, this second image file is on this time shaft after this first image file adjacent, obtain this second image file to should one second time section of time shaft, and according to this second time section and this time shaft, merge this second image file and this audio files is this second audio/video file, after wherein this second audio/video file is connected in this first audio/video file.

8. audio-visual camera device according to claim 7, it is characterized in that, this very first time section and this second time section comprise time point and end time point at the beginning respectively, and this end time of this very first time section point is same as this sart point in time of this second time section.