It’s almost certainly going to stay at 11 characters. The individual characters come from a set of 64 possibilities (A-Za-z0-9_-). 64^11 is somewhat more than 2^64. (10 characters would not be enough.) So basically each youtube ID is actually a 64bit number. And I quite doubt they will ever run out of those. If you … Read more
The most efficient method is to use negative mapping in the -map option to exclude specific stream(s) (“tracks”) while keeping all other streams. Remove a specific audio stream / track ffmpeg -i input -map 0 -map -0:a:2 -c copy output -map 0 selects all streams from the input. -map -0:a:2 then deselects audio stream 3. … Read more
H.264 is a new standard for video compression which has more advanced compression methods than the basic MPEG-4 compression. One of the advantages of H.264 is the high compression rate. It is about 1.5 to 2 times more efficient than MPEG-4 encoding. This high compression rate makes it possible to record more information on the … Read more
YouTube supports a fairly easy to use iframe and url interface to embed videos, playlists and all user uploads to your channel: https://developers.google.com/youtube/player_parameters For example this HTML will embed a player loaded with a playlist of all the videos uploaded to your channel. Replace YOURCHANNELNAME with the actual name of your channel: <iframe src=”https://www.youtube.com/embed/?listType=user_uploads&list=YOURCHANNELNAME” width=”480″ … Read more
I have tested by using object-fit: fill in CSS Works good. video { object-fit: fill; } From MDN (https://developer.mozilla.org/en-US/docs/Web/CSS/object-fit): The object-fit CSS property specifies how the contents of a replaced element should be fitted to the box established by its used height and width. Value: fill The replaced content is sized to fill the element’s … Read more
I found that the following accept string will add mp4 and m4v to the list of file types that safari will accept: accept=”video/mp4,video/x-m4v,video/*” I’m not sure what the mime type is for webm videos but if you can look that up you should be able to tack it on to the accept string. The trick … Read more
ffmpeg provides this functionality. All you need to do is run someting like ffmpeg -i <inputfilename> -s 640×480 -b 512k -vcodec mpeg1video -acodec copy <outputfilename> For newer versions of ffmpeg you need to change -b to -b:v: ffmpeg -i <inputfilename> -s 640×480 -b:v 512k -vcodec mpeg1video -acodec copy <outputfilename> to convert the input video file … Read more
var canvas = document.getElementById(‘canvas’); var ctx = canvas.getContext(‘2d’); var video = document.getElementById(‘video’); video.addEventListener(‘play’, function () { var $this = this; //cache (function loop() { if (!$this.paused && !$this.ended) { ctx.drawImage($this, 0, 0); setTimeout(loop, 1000 / 30); // drawing at 30fps } })(); }, 0); I guess the above code is self Explanatory, If not drop … Read more
Modern containers govern the time component of presentation of video (and audio) frames using timestamps, rather than framerate. So, instead of recording a video as 25 fps, and thus implying that each frame should be drawn 0.04 seconds apart, they store a timestamp for each frame e.g. Frame pts_time 0 0.00 1 0.04 2 0.08 … Read more
Examples to add a watermark / logo image on video using the overlay filter. Centered ffmpeg -i input.mp4 -i logo.png -filter_complex “overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2” -codec:a copy output.mp4 or with the shortened overlay options: overlay=(W-w)/2:(H-h)/2 Top left This is the easy one because the default, if you provide no options to overlay, is to place the image in … Read more