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Sur d’autres sites (17126)

  • How to add background image for text with text size on a video in FFmpeg ?

    24 octobre 2019, par manwtein

    Is there way to add a background image under the text on the video in FFmpeg ?

    I can add black background using ’box’, but i need to add some certain image. I tried to use ’drawtext’ on a image and then overlayed it on the video, but i don’t know text’s width and height for scaling the image.

    "-i",
    
"D:/AndroidProjects/Movies/VideoSamples/VideoShort1.mp4",
    
"-i",
    
"D:/AndroidProjects/Movies/ImageSamples/SampleImage.jpeg",
    
"-filter_complex",
    
"[0:v]drawtext=text='Example':fontcolor=#DB7093:fontsize=120:box=1:boxcolor=black@0.8:boxborderw=5:x='(w/2) - (tw/2)':y='h - ((h/2) - (th/2))",
    
"-s",
    
"1280x720",
    
"-y",
    
"D:/AndroidProjects/Movies/FFmpegSampleShort0.mp4"

    I expect to get video with some image background under my text instead black color.
    Final video

  • Add image.png to top of image.jpg with ffmpeg became more dark

    20 avril 2022, par Rofie Sagara

    I try to create frame for picture use FFMPEG so its logic same as watermark. so i used this code

    


    ffmpeg -i output_1920x1280.jpg -vf "movie=cpf-border.png [watermark]; [in][watermark] overlay=0:0 [out]" -q:v 1 withBorder.jpg


    


    and try with diff command like this

    


    ffmpeg -i output_1920x1280.jpg -i cpf-border.png -pix_fmt rgba -filter_complex "overlay=0:0" withBorder.jpg


    


    but still same. there no error but the result of image its more dark. cause the frame base on white color so i saw that when do side by side can you help me maybe there another syntax to handle this or use another tools

    


    This the border in .png format
This the base image
This the result its more dark than the original

    


  • Use ffmpeg to move moov atom to front of mp4 file on Google Cloud Platform and Google Cloud Storage

    19 avril 2021, par BlueBoy

    I would like to use ffmpeg to move the moov atom of a .mp4 file to the front of the file so that it can then be streamed.

    


    The .mp4 file is in Google Cloud Storage. I want to take that file and apply the conversion on it (or copy it if needed).

    


    I have successfully run the following command in the terminal and it works. I want to essentially run this command server side on the Google Cloud in a Java environment :

    


    ffmpeg -i input_video_file.mp4 -vcodec copy -acodec copy -movflags faststart output_video_file.mp4

    


    I can get my file from Google Cloud Storage like this :

    


    GcsService gcsService = GcsServiceFactory.createGcsService();
GcsFilename file = new GcsFilename("bucket", "folder/filename;


    


    I was able to find a Java library wrapper for ffmpeg (https://github.com/bramp/ffmpeg-cli-wrapper) but it doesn't seem to allow to move the moov atom. Could anyone help me figure this out further ? Is there a

    


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