If this is the case for you then get a modern ffmpeg. This is possible with any player worth using.Īncient ffmpeg builds used -croptop, -cropbottom, -cropleft, -cropright options instead of the crop filter. Instead of cropping and re-encoding, consider cropping upon playback. See FFmpeg Wiki: H.264 Video Encoding Guide for more info.
#Crop video file vlc mp4
Notesĭefault encoder for MP4 is libx264 (H.264 video) or mpeg4 (MPEG-4 Part 2 video) depending on your ffmpeg build.
This way you can experiment and adjust your cropping without the need to encode, view, repeat. You can take a crop (heh heh) and preview it live with ffplay: ffplay -i input -vf "crop=in_w:in_h-40" The filter will automatically center the crop if x and y are omitted such as in this example. \ To compare: If you start VLC with the parameter to crop the video borders (-video-filter croppadd ) and activate manually the aspect ratio from the menu, it works without any problems Use Cases: 1.) Start vlc by command line with a video file of an aspect ratio of 4:3, crop the video borders and scale it to 16:9 2.
#Crop video file vlc how to
Take a look at the complete guide on how to crop a video. Open the app to learn how to screenshot in VLC Step 2: Open your movie or video in VLC media player The second step needed to extract frames from video in VLC is opening the file you want to capture. If you edit the video from your phone, it's desirable to convert it to the MP4 format. Then specify an output format for your file. The output width and height can also be used with out_w and out_h.Ĭrop 20 pixels from the top, and 20 from the bottom: ffmpeg -i in.mp4 -filter:v "crop=in_w:in_h-40" -c:a copy out.mp4 First of all, select the desired area and crop the video. You can refer to the input image size with in_w and in_h as shown in this first example.To crop the bottom right quarter: ffmpeg -i in.mp4 -filter:v "crop=in_w/2:in_h/2:in_w/2:in_h/2" -c:a copy out.mp4 Drag the Playhead to the endpoint, at that point set it as the end outline from Playback > A-B Loop.
Snap the Playback from the top menu bar to grow the menu and pick A-B Loop to set the current casing as the beginning edge. The audio is stream copied in this example, so re-encoding is avoided. Interruption the video at the point you need to begin cutting in VLC for Mac.x and y specify the top left corner of the output rectangle.out_h is the height of the output rectangle.out_w is the width of the output rectangle.Use the crop filter: ffmpeg -i in.mp4 -filter:v "crop=out_w:out_h:x:y" out.mp4
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