WebDec 21, 2015 · This can result in a distorted video if input and output aspect ratios are different. ffmpeg -i input.mov -vf scale=320:240 output.mp4. To maintain the aspect ration, you can specify just the width, followed by -1 which will calculate the height to maintain the aspect ratio of the input: ffmpeg -i input.mov -vf scale=320:-1 output.mp4. Compressing WebJul 21, 2024 · Using ffmpeg to change the "frame width" and "frame height" metadata tags does not change any of that information in VLC. And, it is not changing that information in Windows Explorer (unlike my previous experiences). ... Display Width / Video Height = Display Aspect Ratio. When the SAR is 1:1, the video width / height is the DAR. Last …
change the aspect ratio (video)? : r/ffmpeg - reddit
WebMay 15, 2024 · The scale filter preserves the input's DAR in the output, so that the output does not look distorted. It does this by adjusting the SAR of the output. The remedy is to reset the SAR after scaling. ffmpeg -i oldVideo.mp4 -vf scale=480:360,setsar=1 newVideo.mp4. Since the DAR may no longer be the same, the output can look distorted. WebDec 2, 2024 · Thus, the height is scaled to 1080 / 6 = 180 pixels. 2. Specify the Height To Retain the Aspect Ratio. ffmpeg -i input.mp4 -vf scale=-1:720 output.mp4. The resulting video will have a resolution of 1280x720. This is because 1080 / 720 = 1.5. Thus, the width is scaled to 1920 / 1.5 = 1280 pixels. jolly jumper weather shield
Changing the aspect ratio of a video
WebNov 28, 2012 · Two of the parameters listed for each video stream will be the PAR (Pixel Aspect Ratio) and DAR (Display Aspect Ratio). You'll see something like this: Stream #0.10 [0x258]: Video: mpeg2video, yuv420p, 720x576 [PAR 64:45 DAR 16:9], 4350 kb/s, 27.97 fps, 25 tbr, 90k tbn, 50 tbc. The DAR is what ratio the final displayed video will have. WebApr 22, 2015 at 21:14. Add a comment. 14. Use magic number -1 to resize video proportionally and setdar need to use slash / as separator not colons :. ffmpeg -i -vf "scale=100:-1,setdar=16/9" . the command will resize video 200x400 to … WebTranscoding Problems happen when an analog video recording for an old TV cathode ray tube screen with a 4:3 width by height (DAR) 'display aspect ratio' is digitalized and then displayed on a flat panel TV with a 16:9 'display aspect ratio'. The resulting image might be black banded on the left and right sides to compensate for the different ... jolly jumper weather safe stroller cover