video

问题 I want to trim the local video based on start and end time in android programmatically ,I tried below attached few links but haven't worked for me.Please let me know any working libraries or sample code to overcome this? Refereed links: Android sdk cut/trim video file How to trim the video using FFMPEG library in android? https://superuser.com/questions/377343/cut-part-from-video-file-from-start-position-to-end-position-with-ffmpeg Thanks in advance! 回答1: Use FFMPEG library to solve your

问题 I want to trim the local video based on start and end time in android programmatically ,I tried below attached few links but haven't worked for me.Please let me know any working libraries or sample code to overcome this? Refereed links: Android sdk cut/trim video file How to trim the video using FFMPEG library in android? https://superuser.com/questions/377343/cut-part-from-video-file-from-start-position-to-end-position-with-ffmpeg Thanks in advance! 回答1: Use FFMPEG library to solve your

问题 I have found the JavaScript code to get the thumbnail of a video, given its URL. However, I've only found this for YouTube and Vimeo. Nobody seems to have listed an example of how to do it with video that is intended to be embedded with the html5 video tag. Can it be done? Thanks. 回答1: Yes, you can use video as image source for canvas. Just wrap the code as a function which takes video and size as arguments, and return a canvas element. The video must be loaded and at the frame you want to

问题 I have a Bootstrap 3.3.7 modal window which contains a video using the HTML5 video tag, e.g. <video controls autoplay> <source src="video.mp4" type="video/mp4"> Your browser does not support the video tag. </video> The trouble with this is that when my web page loads, the video starts playing (even though it cannot be "seen" since the modal is closed, the audio also plays). I understand that the autoplay tag is doing this. But how can I get the video to autoplay when the modal is loaded? And

问题 I have video files in S3 and a simple player that loads the files via an src attribute. I want the videos to only be viewed through my site and not directly via the S3 URL (which might be visible in the source code of the page or accessible via right clicking) Looking through the AWS docs it seems the only way i can do this via HTTP is to append a signature and expiration date to a query but this isn't sufficient. Other access restrictions refer to AWS users. How do i get around this or

问题 I have attempted to export videos from Photo Library, but the export callback is never executed. I periodically check the progress of the export, and the progress is always zero. The code below works in 99.9% cases, but sometimes on some devices (absolutely randomly) it stops working and only restart of the iPhone helps. AVAssetExportSession.Status always in waiting state class FilesInteractor { static func tempDirectoryPath() -> String { let documentsPath =

问题 I have attempted to export videos from Photo Library, but the export callback is never executed. I periodically check the progress of the export, and the progress is always zero. The code below works in 99.9% cases, but sometimes on some devices (absolutely randomly) it stops working and only restart of the iPhone helps. AVAssetExportSession.Status always in waiting state class FilesInteractor { static func tempDirectoryPath() -> String { let documentsPath =

问题 I have attempted to export videos from Photo Library, but the export callback is never executed. I periodically check the progress of the export, and the progress is always zero. The code below works in 99.9% cases, but sometimes on some devices (absolutely randomly) it stops working and only restart of the iPhone helps. AVAssetExportSession.Status always in waiting state class FilesInteractor { static func tempDirectoryPath() -> String { let documentsPath =

问题 I have attempted to export videos from Photo Library, but the export callback is never executed. I periodically check the progress of the export, and the progress is always zero. The code below works in 99.9% cases, but sometimes on some devices (absolutely randomly) it stops working and only restart of the iPhone helps. AVAssetExportSession.Status always in waiting state class FilesInteractor { static func tempDirectoryPath() -> String { let documentsPath =

问题 How can I retrieve information from video about byte number from which every frame starts, with using ffmpeg or something else? 回答1: You can try ffprobe : $ ffprobe -show_frames input.mkv ... [FRAME] media_type=video key_frame=0 pkt_pts=3240 pkt_pts_time=3.240000 pkt_dts=N/A pkt_dts_time=N/A best_effort_timestamp=3240 best_effort_timestamp_time=3.240000 pkt_duration=40 pkt_duration_time=0.040000 pkt_pos=18009 pkt_size=480 width=320 height=240 pix_fmt=yuv444p sample_aspect_ratio=1:1 pict_type