video-thumbnails

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

来源： https://stackoverflow.com/questions/47287816/how-to-replace-avplayer-thumbnail-image

来源： https://stackoverflow.com/questions/47287816/how-to-replace-avplayer-thumbnail-image

来源： https://stackoverflow.com/questions/47287816/how-to-replace-avplayer-thumbnail-image

问题 I want to show a video thumbnail in an ImageView from a video path on storage. Is there a function that takes a video path and returns a bitmap of a thumbnail? I get the video path by this code: public ArrayList<String> getAllMedia() { HashSet<String> videoItemHashSet = new HashSet<>(); String[] projection = {MediaStore.Video.VideoColumns.DATA, MediaStore.Video.Media.DISPLAY_NAME}; Cursor cursor = getContext().getContentResolver().query(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, projection,

问题 I need to get video thumbnails with mplayer using a loop, but mplayer gives me error. However the same command works fine out of the loop How do I prevent my command is affected by the loop? I've tried to encapsulate in a sub-shell or redirected stdin / stdout ... but I fail This is the code while read video; do .... mplayer -ss 60 -nosound -vo jpeg -frames 1 "$video" done < video_list.txt output mplayer ...... No bind found for key '~'. No bind found for key 'l'. No bind found for key 'b'.

问题 I need to get video thumbnails with mplayer using a loop, but mplayer gives me error. However the same command works fine out of the loop How do I prevent my command is affected by the loop? I've tried to encapsulate in a sub-shell or redirected stdin / stdout ... but I fail This is the code while read video; do .... mplayer -ss 60 -nosound -vo jpeg -frames 1 "$video" done < video_list.txt output mplayer ...... No bind found for key '~'. No bind found for key 'l'. No bind found for key 'b'.

问题 I have a video and I need get its thumbnail. I use ThumbnailUtils class for this purpose, but it returns null instead of expected Bitmap . When I debug my app, I see that inside createVideoThumbnail method MediaMetadataRetriever.setDataSource invokes and it throws IllegalArgumentException . Inside setDataSource I see this code: public void setDataSource(String path) throws IllegalArgumentException { if (path == null) { throw new IllegalArgumentException(); } try (FileInputStream is = new

问题 i am developing an android app for my ip camera, and the camera has some specific api commands that it can respond to. the problem i am stuck on is that i want to display a list of videos available on the memory card of the camera. I am getting the file list but i also want to get the thumbnails of those files. The problem in getting the thumbnail is that i don't have any direct IP address of the video, the camera only provides me two things for accessing the video 1. RTSP URL of the video 2.

问题 I've got the Youtube API setup in AS3 - it's all loading nicely but I'd like to load multiple thumbnails and then display them so that user may click one to watch the video but I'm having a little trouble doing this. The code that I have for doing this is this: (where "vid_player" is the instance name of my container object. function createFeaturedButtons(vid_player:Object, featuredVideos:Array) { var results:Array = []; for each (var id:String in featuredVideos) { results.push(vid_player