node.js - Setting fluent-ffmpeg video bitrate gives 72 kbps instead of 8000 kbps

Question

I am attempting to overlay another video on the current one but the bitrate always gets set to 72 kbps. I notice that I only get this with libx264 and libx265 but works with other encoders. The input videos are correct and have a total bitrate of about 8000.

new ffmpeg("./Temp/Downloaded-Vod.mp4")
    .input("./Temp/RenderedChat.mp4")
    .complexFilter([
        '[0:v]scale=' + VodDimensionsX + ':' + VodDimensionsY + '[0scaled]',
        '[1:v]scale=' + BoxDimensionsX + ':' + BoxDimensionsY + '[1scaled]',
        '[0scaled]pad=' + String(VodDimensionsX + BoxDimensionsX) + ':' + VodDimensionsY + '[0padded]',
        '[0padded][1scaled]overlay=shortest=1:x=' + VodDimensionsX + '[output]',
    ])

    .outputOptions([
        "-map 0:a",
        "-map [output]"
    ])

    .audioCodec("copy")
    .videoCodec("libx264")
    .videoBitrate(8000)
    .outputFPS(FPS)

    .output("FinishedVod.mp4")

    .on("end", function() {
        Completed = true
    })

    .on("progress", function(progress) {
        console.log("Processing final video: " + Math.floor(progress.percent) + "% done")
    })

    .run()

question from:https://stackoverflow.com/questions/66054979/setting-fluent-ffmpeg-video-bitrate-gives-72-kbps-instead-of-8000-kbps

Answer 1

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