Yes, this sort of thing is possible without Flash: http://hacks.mozilla.org/2009/06/tristan-washing-machine/ http://jakearchibald.com/scratch/alphavid/ However, only very modern browsers supports HTML5 videos, and this should be your consideration when deploying in HTML 5, and you should provide a fallback (probably Flash or just omit the transparency).
You can also use mp4v fourcc = cv2.VideoWriter_fourcc(*’mp4v’) where the videowriter should look like this: out = cv2.VideoWriter(‘output.mp4’,fourcc, 15, size) But there are more codecs available for mp4. You can see the list of them by setting fourcc = -1, it will show a list like this: OpenCV: FFMPEG: format mp4 / MP4 (MPEG-4 Part … Read more
NOTE: This solution adds the subtitles to the video as a separate optional (and user-controlled) subtitle track. ffmpeg -i infile.mp4 -i infile.srt -c copy -c:s mov_text outfile.mp4 -vf subtitles=infile.srt will not work with -c copy The order of -c copy -c:s mov_text is important. You are telling FFmpeg: Video: copy, Audio: copy, Subtitle: copy Subtitle: … Read more
Using ffmpeg 4.0, released Apr 20 2018 or newer, ffmpeg -i video.mp4 -i image.png -map 1 -map 0 -c copy -disposition:0 attached_pic out.mp4
This answer about P/Invoke for Shell32 reminded me of the Windows API Code Pack to access common Windows Vista/7/2008/2008R2 APIs. It was very easy, using the PropertyEdit demo in the included samples, to figure out the Shell32 API to get various media file properties, like duration. I assume the same prerequisite applies for having the … Read more
Safari requires webserver to support “Range” request header in order to play your media content. https://developer.apple.com/library/safari/documentation/AppleApplications/Reference/SafariWebContent/CreatingVideoforSafarioniPhone/CreatingVideoforSafarioniPhone.html#//apple_ref/doc/uid/TP40006514-SW6 For a legit “Range” request response, your webserve need to return status code “206”.
You need to implement the skipping functionality yourself in PHP. This is a code snippet that will do that. <?php $path=”file.mp4″; $size=filesize($path); $fm=@fopen($path,’rb’); if(!$fm) { // You can also redirect here header (“HTTP/1.0 404 Not Found”); die(); } $begin=0; $end=$size; if(isset($_SERVER[‘HTTP_RANGE’])) { if(preg_match(‘/bytes=\h*(\d+)-(\d*)[\D.*]?/i’, $_SERVER[‘HTTP_RANGE’], $matches)) { $begin=intval($matches[0]); if(!empty($matches[1])) { $end=intval($matches[1]); } } } if($begin>0||$end<$size) header(‘HTTP/1.0 … Read more
Iphones use something called byte-ranges for audio and video requests. See this link for a solution. It’s in Appendix A. http://mobiforge.com/developing/story/content-delivery-mobile-devices
A fragmented MP4 contains a series of segments which can be requested individually if your server supports byte-range requests. Boxes aka Atoms All MP4 files use an object oriented format that contains boxes aka atoms. You can view a representation of the boxes in your MP4 using an online tool such as MP4 Parser or … Read more
This should do the trick: ffmpeg -re -i infile.ext -g 52 \ -c:a aac -b:a 64k -c:v libx264 -b:v 448k \ -f mp4 -movflags frag_keyframe+empty_moov \ output.mp4 frag_keyframe causes fragmented output, empty_moov will cause output to be 100% fragmented; without this the first fragment will be muxed as a short movie (using moov) followed by … Read more