You can’t perform any filtering without losing quality when encoding to a lossy format, but you have some options. Crop with your player A possible solution would be to crop during playback, so you don’t even need to re-encode. It is also useful to preview a crop. This method will not create an output file. … Read more
I guess that really there are two questions here… How do I batch convert files? How do I auto scale a video? How do I batch convert files? These scripts ought to do the trick… Windows for %%i in (*.mp4) do ( ffmpeg -y -i “%%i” << TODO >> “%%~ni_shrink.mp4” ) Linux (UNTESTED!) for i … Read more
Use the -f parameter to tell ffmpeg which output-format to use. E.g ffmpeg -i input.mpg … -f mp4 output to create a file named output in mp4 format.
drawtext vs subtitles This can be done using the drawtext or subtitles filters. drawtext is simpler, but subtitles has much better styling and timing options. subtitles can automatically wrap the text while drawtext cannot. drawtext filter examples Add text to solid color background Using the color filter for the background and the drawtext filter for … Read more
There’s a nice workaround for this in the sitepoint forums: <div onclick=”this.nextElementSibling.style.display=’block’; this.style.display=’none'”> <img src=”https://stackoverflow.com/questions/7199624/my_thumbnail.png” style=”cursor:pointer” /> </div> <div style=”display:none”> <!– Embed code here –> </div> Note: To prevent having to click twice to make the video play, use autoplay=1 in the video embed code. It will start playing when the second div is displayed.
Ok, still no clear, definitive answers, so I went on and took a little action. The WHATWG would probably have an answer for me, so I decided to contact someone there. Didn’t really know who it had to be, but fellow Dutchman Anne van Kesteren usually seems to know the Web’s future pretty well – … Read more
I know this is a really old question, but as Google seems to like it I thought it would be worth pointing out that I wrote a Node.js video streaming module (Github, or via NPM) that’s hopefully worth a look too.
For ffmpeg: ffmpeg -i {input}.mov -vcodec h264 -acodec aac -strict -2 {output}.mp4 You may also add the -q:v/-q:a parameter to specify the quality of the video. You may also use HandBrake which is a simpler encoder than ffmpeg. For HandBrake: handbrakecli -i {input}.mov -e x264 -E facc -o {output}.mp4 EDIT: I found the solution! … Read more
Ok, first of all assuming you know the start and stop duration; we will add key-frames at that duration. ffmpeg -i a.mp4 -force_key_frames 00:00:09,00:00:12 out.mp4 Most of the time you can directly cut the video with perfection but in your case it does not help you; so we have taken care of it by above … Read more
Short answer: No. Use WebM or Ogg instead. This article covers just about everything you need to know about the <video> element, including which browsers support which container formats and codecs.