WO2011121696A1 - Procédé de reproduction de vidéo et dispositif de reproduction de vidéo - Google Patents

Procédé de reproduction de vidéo et dispositif de reproduction de vidéo Download PDF

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Publication number
WO2011121696A1
WO2011121696A1 PCT/JP2010/007614 JP2010007614W WO2011121696A1 WO 2011121696 A1 WO2011121696 A1 WO 2011121696A1 JP 2010007614 W JP2010007614 W JP 2010007614W WO 2011121696 A1 WO2011121696 A1 WO 2011121696A1
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WO
WIPO (PCT)
Prior art keywords
speed
video
playback
switching
frame
Prior art date
Application number
PCT/JP2010/007614
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English (en)
Japanese (ja)
Inventor
福川尚史
橘賢一
田島香
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パナソニック株式会社
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Publication of WO2011121696A1 publication Critical patent/WO2011121696A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape
    • H04N5/783—Adaptations for reproducing at a rate different from the recording rate
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/005—Reproducing at a different information rate from the information rate of recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/34—Indicating arrangements 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/42202—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS] environmental sensors, e.g. for detecting temperature, luminosity, pressure, earthquakes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42646—Internal components of the client ; Characteristics thereof for reading from or writing on a non-volatile solid state storage medium, e.g. DVD, CD-ROM
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/84—Television signal recording using optical recording
    • H04N5/85—Television signal recording using optical recording on discs or drums

Definitions

  • the present invention relates to a technology for playing back video content, and more particularly to special playback functions such as fast forward, fast reverse, and frame advance.
  • video contents in various formats including video contents in DVD-Video format
  • various viewing modes such as viewing with an optical disk video playback device such as a DVD player or a BD player, or viewing with video playback software running on a personal computer.
  • the video playback apparatus or video playback software generally has special playback functions such as fast forward, fast reverse, and frame advance that change the playback speed. For this reason, the special playback function is required to operate on video contents in various formats.
  • Special playback function allows playback speed to be switched by user input via remote control or main unit buttons.
  • the playback speed is switched such that when the fast-forward key 14 is pressed once, the fast-forward key 1 is pressed, and when the fast-forward key 14 is pressed once, the fast-forward key 2 is pressed.
  • the playback speed is switched such that when the fast reverse key 13 is pressed once, the fast reverse is in one stage, and when the fast reverse key 13 is pressed once, the fast reverse is in two stages.
  • the playback speed can be switched using the jog dial instead of the fast forward / rewind keys.
  • the speed stage is switched depending on the angle of rotation, such as a fast-forward 1 stage when rotated 30 degrees to the right and a fast-forward 2 stage when rotated 60 degrees. Rotate counterclockwise to switch between fast reverse steps.
  • the video playback device and video playback software include an OSD (On Screen Display) that is displayed on a video monitor such as an LCD (Liquid Crystal Display), TV, or display. ) Is generally equipped with a function to display the speed stage.
  • the speed stage can be displayed by the arrow-shaped display position of the OSD, such as the OSD display 20 at the first stage of fast-forwarding and the OSD display 21 at the third stage of fast-forwarding in FIG.
  • the intermittent frame interval for each speed stage is, for example, fast forward 1 stage 5 seconds and fast forward 2 stages 10 seconds. It is decided beforehand as follows.
  • the fast-forwarding and winding are accurately performed by making the size of the access unit of the recording medium a common multiple of the size of the minimum access unit for the recording medium and the size of the processing unit in the information material playback means.
  • There is a technique of performing special reproduction such as return see, for example, Patent Document 1).
  • an AVI (Audio Visual Interleaving) file which is one of video contents, has a data structure as shown in FIG. 16, and is composed of three areas: a header area, a frame data area, and an index area.
  • the header area describes attribute information such as video stream and audio stream codec information, frame rate, and bit rate.
  • video frame data and audio frame data are described in units of chunks.
  • the video frame data and the audio frame data are MPEG-compressed, for example, and an I frame that can be decoded independently is called a key frame.
  • entry information 22 for directly accessing each video frame data and audio frame data in the frame data area is described.
  • the entry information 22 includes Chunk ID for determining video data or audio data, Flags for determining whether the frame is a key frame, Offset which is an offset position from the file head or frame data area, and Size which is a data size.
  • the video playback device or video playback software uses the header area description frame rate, bit rate, and index area entry information to determine time information such as PTS (Presentation Time Stamp) and the number of frames. Are converted into position information such as an offset position and stored as index information at the start of reproduction.
  • PTS Presentation Time Stamp
  • index information acquired at the start of playback is used to extract key frames.
  • the intermittent frame interval is determined in advance, for example, fast-forward 1 stage 5 seconds and fast-forward 2 stages 10 seconds.
  • the current fast-forwarding speed is one step, the key frame closest to the frame position 5 seconds after the current image output frame position is calculated from the index information, and the calculated key frame is directly accessed to output the next image. Decode as a frame.
  • the key frame closest to the frame position after 5 seconds is further calculated from the index information, and the calculated key frame is directly accessed and decoded as the next image to be output.
  • the fast-forwarding speed is two steps, the key frame position after 10 seconds is calculated from the index information.
  • the key frame interval of the AVI file is not particularly specified, and the key frame interval may be larger than the predetermined intermittent frame interval depending on the playback location. For example, if the AVI file has a key frame interval of 10 seconds, even if the fast-forwarding speed is 1 stage and the intermittent frame interval is 5 seconds, there is no key frame at the position after 5 seconds. The key frame to be displayed is 10 seconds later. For this reason, even if the user switches the fast-forward speed to two levels with the fast-forward key or jog dial on the remote control, the OSD display switches from the OSD display 20 to the OSD display 23. There was a problem that the speed change was not felt.
  • the present invention solves the above-mentioned problem, and even when the interval between frames that can be independently output in video content is various, it is possible to reliably obtain a speed change before and after switching the playback speed in special playback.
  • An object is to provide a video reproduction technology capable of performing the above.
  • a video playback method for performing special playback by selecting and displaying a frame that can be independently output for video content includes: a reception step of receiving a request for switching playback speed; When a request for switching the playback speed is received in the reception step, the next screen frame at the playback speed after switching is identified, and the speed change due to switching is detected on the video by comparison processing using the position or time of this next screen frame.
  • the next picture frame at the playback speed after the switching is specified, and the speed change due to the switching is performed by the comparison process using the position or time of the next picture frame. It is determined whether or not the image is recognized. When it is determined that it is not recognized, the next image frame is re-specified so that the speed change due to switching is recognized on the video. For this reason, when switching the playback speed in the special playback, the user can surely recognize the speed change on the video.
  • a video playback apparatus that performs special playback by selecting and displaying a frame that can be output independently for video content, inputs the video content data, and outputs audio.
  • a playback unit that outputs a video signal and a control unit that controls the playback unit, the control unit specifying a next image frame at the playback speed after switching in response to a request for switching the playback speed;
  • a comparison unit that determines whether or not a speed change due to switching is recognized on the video, and when the comparison unit determines that it is not recognized, An adjustment unit that re-specifies the next image frame so that a change in speed is recognized on the video;
  • the next picture frame at the playback speed after the switching is specified, and the speed change due to the switching is performed by the comparison process using the position or time of the next picture frame. It is determined whether or not the image is recognized. When it is determined that it is not recognized, the next image frame is re-specified so that the speed change due to switching is recognized on the video. For this reason, when switching the playback speed in the special playback, the user can surely recognize the speed change on the video.
  • the user when the playback speed is switched in special playback, the user can surely recognize the change in speed on the video.
  • FIG. 4 is a flowchart showing processing at the time of switching playback speed in the first embodiment.
  • 6 is a diagram illustrating a specific processing example at the time of playback speed switching in Embodiment 1.
  • FIG. It is a figure which shows an example of the speed step in Embodiment 1, and a skip width.
  • 10 is a flowchart illustrating processing at the time of switching playback speed in the second embodiment.
  • 10 is a flowchart illustrating processing in a steady state after switching the reproduction speed in the second embodiment.
  • FIG. 10 is a diagram illustrating a specific processing example at the time of playback speed switching in the second embodiment.
  • FIG. 10 is a diagram for explaining a specific processing example of speed information storage in the second embodiment.
  • FIG. 10 is a flowchart showing processing at the time of switching playback speed in the third embodiment.
  • 14 is a flowchart illustrating processing in a steady state after switching the reproduction speed in the third embodiment.
  • FIG. 10 is a diagram illustrating a specific processing example at the time of playback speed switching in the third embodiment. It is a figure which shows an example of the remote control of the video reproduction apparatus by which the special reproduction
  • FIG. 1 is a diagram showing a schematic configuration of a video reproduction apparatus according to Embodiment 1 and the following embodiments.
  • 1 includes an LSI 102 including a decoding unit 103 and a control unit 104, a storage device 107, a ROM 108, and an input device 109.
  • Compressed video data, audio data, and the like are recorded on the recording medium 101.
  • the recording medium 101 includes, for example, an optical disk such as a DVD or a flash memory such as a USB memory.
  • the recording medium 101 may be built in the video playback device 100 or may be attached to the video playback device 100 from the outside.
  • the decoding unit 103 as a reproduction unit decodes input data into video data and audio data under the control of the control unit 104, and outputs the data to the video / audio output device 110 as a video signal / audio signal. Note that the decoding unit 103 can output the OSD together with the video signal and display information related to reproduction on a display or the like.
  • the control unit 104 performs playback control of a file acquired from the recording medium 101, playback instruction control according to a request from the input device 109, and overall control of the video playback device 100. Further, the control unit 104 performs a comparison process using a position or time of a next image frame at the playback speed after switching in order to determine whether or not a speed change due to switching of the playback speed is recognized on the video. Unit 105 and adjustment unit 106 that re-specifies the next image frame so that a change in speed due to switching of the playback speed is recognized on the video.
  • the input device 109 includes a plurality of keys, a remote controller, a jog dial, and the like for the user to give a control instruction to the control unit 104.
  • a navigation device or a control microcomputer may be connected to the input device 109.
  • the video / audio output device 110 includes, for example, a display and a speaker.
  • the video / audio output device 110 converts the video signal obtained from the decoding unit 103 so that the video signal can be displayed on the display, and similarly, the audio signal obtained from the decoding unit 103 is converted into a speaker. So that it can be output as audio.
  • the video playback device 100 in FIG. 1 is capable of executing special playback such as fast forward playback, fast reverse playback, and frame advance for video content in addition to normal playback.
  • special playback such as fast forward playback, fast reverse playback, and frame advance for video content in addition to normal playback.
  • the user can switch the playback speed with the input device 109 during special playback.
  • FIG. 2 is a flowchart showing a video reproduction method in the present embodiment.
  • fast-forward playback is performed as an example of special playback in the video playback device 100 of FIG.
  • FIG. 2 shows processing when switching the playback speed of fast-forward playback.
  • the comparison unit 105 executes the comparison step S102
  • the adjustment unit 106 executes the adjustment step S103.
  • FIG. 3 is a diagram showing specific processing according to the present embodiment in AVI file playback as an example.
  • fast forward playback is performed in a forward direction at a speed higher than the normal speed, but it is assumed that the playback speed has a plurality of stages. In this specific example, it is assumed that five speed stages are provided as shown in FIG.
  • the next frame to be output is specified using the index information described in the AVI file.
  • the index information describes the position information and time information of all the key frames in the file, and the key frame position information and time information include an offset value from the data area and the PTS.
  • the key frame to be output next is searched from the index information and directly accessed.
  • an offset closest to the playback direction in the LSN obtained by adding a predetermined amount of skip width according to the speed stage to the LSN (logical sector number) of the last displayed key frame.
  • a key frame having a value is specified as the next image frame.
  • the skip width is 100 sectors (WS1) in one step, 200 sectors (WS2) in two steps, 400 sectors (WS3) in three steps, 800 sectors (WS4) in four steps, 5
  • the number of sectors is 1600 (WS5).
  • the position of the next image frame is compared before and after the speed switching. Then, from the comparison result, when it is determined that the speed change due to switching is not recognized on the video, the next output frame is re-specified by adjusting the stage of the playback speed so that the speed change due to switching is recognized on the video. .
  • the control unit 104 receives a playback speed switching request and determines whether to perform playback speed switching (receiving step S101).
  • a switching instruction is given to increase the playback speed one step from the fast-forward playback speed one step.
  • the next image frame at the playback speed after switching is specified, and the position of the next image frame before the speed switching is compared with the position of the next image frame after the speed switching (comparison step).
  • the position of the next image frame at the first speed (before speed switching) is compared with the position of the next image frame at the second speed (after speed switching).
  • the next image frame after the speed switching is determined as the actual next image frame.
  • a determination method for example, when the frame position interval is larger than a predetermined value, it is determined that a speed change due to switching is recognized, while when it is equal to or less than a predetermined value, it is determined that a speed change due to switching is not recognized.
  • a method is conceivable.
  • the key frame moves forward from the position of the current key frame (last output key frame) LSN + speed 1 step skip width WS1.
  • Searching for. A key frame K1 having the closest offset value is detected.
  • the key frame is searched in the forward direction from the position of the current key frame LSN + the two speed skip width WS2.
  • a key frame K2 having the closest offset value is detected.
  • the offset values of the key frames K1 and K2 are compared, and when the frames are the same or when the frame interval is within a predetermined range, it is determined that the expected speed change cannot be obtained.
  • the playback speed stage is changed and the next output frame is re-specified so that the speed change due to switching is recognized on the video (adjustment step S103).
  • the fast-forward playback speed is switched from one stage to two stages
  • the speed change is recognized on the video if the next image frame is specified in three stages.
  • the playback speed after switching is automatically switched from 2 levels to 3 levels.
  • the speed stage is adjusted so that a speed change can be obtained on the video. If a search is performed from a position advanced in the forward direction with respect to the key frame K2, a key frame (for example, key frame K3) at a position advanced more than the key frame K2 is detected, and the speed change is detected on the video. There is a high possibility that it can be recognized. A speed step having such a skip width is selected from the speed steps closest to the current speed step. Here, it is assumed that three stages correspond to this.
  • the key frame K4 is specified again as the next image frame.
  • the playback speed after switching is adjusted in three stages.
  • the OSD display also displays the speed stage after adjustment.
  • the OSD display shown in FIG. 15 changes from the one-stage display 20 to the three-stage display 21.
  • the position of the next image frame is compared before and after switching the playback speed stage, and the speed stage is adjusted so that the expected speed change can be obtained on the video.
  • FIG. 5 and 6 are flowcharts showing the video reproduction method in the present embodiment. Also in the present embodiment, as in the first embodiment, fast-play playback is performed as an example of special playback in the video playback device 100 of FIG.
  • FIG. 5 shows processing when switching the playback speed of fast-forward playback
  • FIG. 6 shows processing in a steady state after switching the playback speed.
  • the comparison unit 105 executes comparison step S202
  • the adjustment unit 106 executes adjustment step S203.
  • FIG. 7 is a diagram showing specific processing according to the present embodiment in AVI file playback as an example.
  • information related to the position interval of the output frame is stored as speed information. Then, when the playback speed is switched, a comparison process using speed information is performed. From the comparison result, when it is determined that the speed change due to switching is not recognized on the video, the frame skip width related to the speed step is changed based on the speed information so that the speed change due to switching is recognized on the video. Respecify the output frame.
  • the actual skip width of a frame that is, the interval between the previous output key frame and the next output key frame is stored as speed information. Or you may memorize
  • the average value it is possible to effectively adjust the next output frame even in a file in which the distribution of frames that can be output independently is biased.
  • the control unit 104 receives a playback speed switching request and determines whether to perform playback speed switching (receiving step S201).
  • a switching instruction is given to increase the fast-forward playback speed from one stage to two stages.
  • the corrected skip width is as shown in FIG. Assume that the stored key frame interval average value ⁇ is 397 sectors.
  • the next image frame after the speed switching is determined as the actual next image frame.
  • a determination method for example, when the position interval is larger than a value obtained by adding a predetermined value to the average value ⁇ , it is determined that a speed change due to switching is recognized, but otherwise, a speed change due to switching is recognized. A method of determining that it is not performed is conceivable. Note that the same comparison process as in comparison step S102 of the first embodiment may be performed.
  • the search is performed from the position of the current key frame K5 LSN + speed two-stage corrected skip width WS32.
  • a key frame K6 having the closest offset value is detected.
  • the interval between the key frames K5 and K6 is 380 sectors, and the stored average value ⁇ of the key frame intervals at one speed is 397 sectors.
  • the skip width is updated so that the speed change due to the switching is recognized on the video, and the next image frame is re-specified (adjustment step S203). For example, when the fast-forward playback speed is switched from one stage to two stages, if it is determined that the speed change is not recognized on the video, the two-stage corrected skip width WS32 is updated.
  • the post-correction skip width WS32 in two stages is updated to the average value ⁇ of the key frame position interval in one stage of speed + a constant value.
  • the constant value is 0 here. Therefore, the two-step corrected skip width WS32 is updated to 397 sectors.
  • the key frame K7 is searched in the forward direction from the position of the skipped width WS32 (397 sectors after correction using ⁇ ) of the LSN + speed in two steps of the key frame K5, and the key frame K7 having the closest offset value is found. Detected. The key frame K7 is re-specified as the next image output frame.
  • the next output frame specification (S211) and the output (S213) are repeatedly executed. Speed information is also stored (S212) for each image. As described above, when the post-correction skip width in the speed stage after switching is updated in the adjustment step S203, the subsequent output frame specification is performed using the updated post-correction skip width.
  • the present embodiment it is expected by adjusting the skip width for determining the output frame so that the expected speed change can be obtained on the video at the time of speed stage switching such as fast-forward playback. A speed change can be reliably obtained on the image.
  • FIG. 10 and 11 are flowcharts showing the video reproduction method in the present embodiment. Also in the present embodiment, as in the first embodiment, fast-forward playback is performed as an example of special playback in the video playback device 100 of FIG.
  • FIG. 10 shows processing when switching the playback speed of fast-forward playback
  • FIG. 11 shows processing in a steady state after switching the playback speed.
  • the comparison unit 105 executes comparison steps S302 and S305
  • the adjustment unit 106 executes adjustment steps S303 and S306.
  • FIG. 12 is a diagram showing specific processing according to the present embodiment in AVI file playback as an example.
  • the comparison step and the adjustment step described in the first embodiment and the second embodiment are performed not only when the playback speed is switched, but also in a steady state after switching the playback speed. This is repeatedly executed for each image step S307.
  • the positions of the next image frames before and after the switching of the playback speed stage may be compared, or as shown in the second embodiment.
  • the comparison process using the average value of the output frame position intervals may be performed.
  • the speed level may be switched as shown in the first embodiment, and the frame skip width is updated as shown in the second embodiment. Also good. However, in the present embodiment, as shown in FIG. 12, the switching of the speed stage and the adjustment of the skip width are performed only when the next image output frame is specified, and the actual speed adjustment is not performed. And
  • the user reliably recognizes the speed change even in a file having a biased distribution of frames that can be output independently. be able to.
  • the speed can be adjusted according to the distribution of index information near the playback location.
  • the comparison step and the adjustment step are performed only when the reproduction speed is switched, there is an advantage that the special reproduction processing can be speeded up.
  • the video playback method has been described as being executed in the video playback device 100 using the storage medium 101.
  • the present invention is not limited to this.
  • video playback software that runs on a personal computer.
  • the same video reproduction method can be adopted and the same effect can be obtained.
  • a comparison process using the frame position is performed using the position information of each frame included in the index information, and the next image frame is specified using the sector as the frame skip width.
  • the time information of each frame included in the index information is used to perform the comparison process using the time of the frame, and the next image frame is specified using the time as the frame skipping width. It does n’t matter.
  • the user in special playback of video content, the user can surely recognize a change in the speed on the video when the speed is switched.
  • video playback software that operates on an AV device such as a DVD player or a BD player, a personal computer, etc. It is effective for improving the function of
  • Video playback device 103 Decoding unit (playing unit) 104 Control unit 105 Comparison unit 106 Adjustment unit

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  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
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  • Environmental & Geological Engineering (AREA)
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  • Television Signal Processing For Recording (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)

Abstract

Un changement de vitesse de vidéo peut être perçu de manière fiable lorsque la vitesse de reproduction est commutée vers une vitesse de reproduction spéciale. Lorsqu'une demande de commutation de la vitesse de reproduction est reçue (S101), la trame d'image de sortie suivante à la vitesse de reproduction après la commutation est spécifiée. Il est ensuite déterminé si, oui ou non, le changement de vitesse dû à la commutation est perçu dans la vidéo, au moyen d'un processus de comparaison qui utilise la position ou le temps de la trame d'image de sortie suivante (S102). S'il est déterminé que le changement n'est pas perçu, la trame d'image de sortie suivante est spécifiée de nouveau de manière à ce que le changement de vitesse dû à la commutation soit perçu dans la vidéo (S103). La trame d'image de sortie suivante qui est déterminée est délivrée (S104).
PCT/JP2010/007614 2010-03-29 2010-12-28 Procédé de reproduction de vidéo et dispositif de reproduction de vidéo WO2011121696A1 (fr)

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JP2010075967A JP2011211416A (ja) 2010-03-29 2010-03-29 映像再生方法及び映像再生装置

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN105979149A (zh) * 2016-06-24 2016-09-28 深圳市金立通信设备有限公司 一种拍摄方法及终端

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004208076A (ja) * 2002-12-25 2004-07-22 Mitsubishi Electric Corp 映像検出信号生成装置、映像検出信号記録装置ならびに映像信号再生装置、および映像検出信号生成方法、映像検出信号記録方法ならびに映像信号再生方法
JP2007124576A (ja) * 2005-10-31 2007-05-17 Sharp Corp 映像再生装置、映像再生方法、映像再生プログラム、および、映像再生プログラムを記録した記録媒体
JP2008259119A (ja) * 2007-04-09 2008-10-23 Hitachi Ltd 映像配信装置、映像受信装置およびキーフレーム配信方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004208076A (ja) * 2002-12-25 2004-07-22 Mitsubishi Electric Corp 映像検出信号生成装置、映像検出信号記録装置ならびに映像信号再生装置、および映像検出信号生成方法、映像検出信号記録方法ならびに映像信号再生方法
JP2007124576A (ja) * 2005-10-31 2007-05-17 Sharp Corp 映像再生装置、映像再生方法、映像再生プログラム、および、映像再生プログラムを記録した記録媒体
JP2008259119A (ja) * 2007-04-09 2008-10-23 Hitachi Ltd 映像配信装置、映像受信装置およびキーフレーム配信方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105979149A (zh) * 2016-06-24 2016-09-28 深圳市金立通信设备有限公司 一种拍摄方法及终端

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