![vlc mac os x how to change thumbnail picture for a video vlc mac os x how to change thumbnail picture for a video](https://i.ytimg.com/vi/RuMBPYcPyww/maxresdefault.jpg)
I read your link and it just confirmed what I understood about thumbs.ġ. Sometimes in order to work with it, you have to do bizarre stuff in turn. Yeah, well MS does MANY things that are bizarre. To suggest that the OP edits the clip in order to insert an image that is then extracted is, frankly, bizarre. Scott Really? As the OP assumes, these images may initially originate from within a video file but, ultimately, they are stored as images somewhere. There must be an easier way of doing this? Some kind of "video registry hack" perhaps? What's an NLE btw? I was hoping I could just replace (preferably) the beginning frame of the video with my own picture seems the most "promising" (and im a bit familiar with using it) but that would mean I may have to re-encode everything which would take time and a lot of processing power (dunno if it'll work on m4vs)
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It just seemed random.i guess it was dependent on how the original video was encoded. Uhmmm.i do know the video thumbnails came from the video file itself.although, I don't really understand (like you said) which video frame at some point becomes the "thumbnail" eventually. This does NOT include binary joining (even if on the surface, it looks like it works). When subsequently saving this, it will of course re-encode your video (which is a bad thing), unless you use proper lossless joining methods (e.g. The only way to get your pic to be used as the thumbnail is to figure out WHICH frame(s) is shown in the preview and use an NLE to insert a picture - AS VIDEO - into your existing video at that framecount point. It may store it in a separate cache file, but it is BASED on the contents of the video/movie file, so you can't "replace" a thumbnail with something external to the video/movie. Thumbnails are meant to show you a low-rez preview poster of some point in a video/movie. Taking the images generated by VLC, run the following command:įor more on the tool you can check the associated montage help page.I don't think you understand what a thumbnail is (comes from). Test.mpg specifies the video to play and finally vlc://quit forces vlc to quit when ready.Īlthough VLC does not provide an option for creating a contact sheet, one possible solution is to use the ImageMagick 'montage' tool. This will prevent VLC from creating multiple images. In that case Vlc produces the file 'snap.jpg'. You can prefix with a path, for example c:\snap and resulting images will be created there. image-out-prefix snap specifies the filename must start with 'snap'. If the number is too high (for example 500) it still produces only one image, so the actual value is not so important as long as it is higher then the images per second. If your video has more images per seconds you should increase this value to prevend you get more images as one. In my case the video contains 24 images per second so this is the right value. image-out-ratio 24 specifies we want one image out of 24. You could specify -image-out-format png to get a. jpg because i provided: -image-out-format jpg. If you want an image from the 5th second fill in: -start-time 5 -stop-time 6 In that case you could omit the parameter -start-time. In my example the first second of the video. Next set the interval (in seconds) you want an image from with: -start-time 0 -stop-time 1 When VLC media player runs it 'plays' the video for one second without actually showing the video on screen, and then quits, leaving us with a file named 'snap000000.jpg', containing an image of the first frame of the video.įirst select the image output with: -V image or -vout image. Vlc C:\video\to\process.mp4 -V image -start-time 0 -stop-time 1 -image-out-format jpg -image-out-ratio 24 -image-out-prefix snap vlc://quit What it does: If you want to get rid of the sound you can add "-aout=dummy" next to "-vout=dummy".įor older VLC versions (1.0.0 and below) the same can be done with image output module
![vlc mac os x how to change thumbnail picture for a video vlc mac os x how to change thumbnail picture for a video](https://4.bp.blogspot.com/-MnaSJIOkQUM/Vx8TiL98DzI/AAAAAAAAFyI/PSuQPJHX3vUzxhuJZWmJbLlv-s4-a2gagCLcB/w1200-h675-p-k-no-nu/%5BFix%5D%2BVideo%2BThumbnail%2BPreview%2BNot%2BShowingMissing%2Bin%2BWindows%2BFile%2BExplorer.jpg)
![vlc mac os x how to change thumbnail picture for a video vlc mac os x how to change thumbnail picture for a video](https://www.animaker.com/hub/wp-content/uploads/2021/01/crop-a-video-in-vlc.png)
Vlc C:\video\to\process.mp4 -rate=1 -video-filter=scene -vout=dummy -start-time=10 -stop-time=11 -scene-format=png -scene-ratio=24 -scene-prefix=snap -scene-path=C:\path\for\snapshots\ vlc://quit With new VLC versions (VLC 1.1.0 and above), the thumbnails are generated with scene video filter