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• Scrolling Effect of an Image using FFmpeg [closed]

  5 juin, par neeebzz

  I want to create an mp4 video of 40 seconds where an image just floats from top to bottom and vice versa.

  


  I am using the following ffmpeg command :

  


  ffmpeg 
    -loop 1 
    -t 40 
    -i ./input.jpg 
    -filter_complex [0]scale=800:-1[s0];[s0]crop=h=450:w=800:x=0:y=(ih-450)*(3*pow(t/40.241\,2) - 2*pow(t/40\,3))[s1];[s1]scale=800:400[s2] 
    -map [s2] 
    -pix_fmt yuv420p 
    -preset medium 
    -r 30 
    -vcodec libx264 
    ./output.mp4 -y


  


  The animation is working as expected however the motion is very jerky. How can I smooth it out ?

  


  Ffmpeg version :

  


  ffmpeg version 5.1.6-0+deb12u1 Copyright (c) 2000-2024 the FFmpeg developers


  


• How can use ffmpeg in AWS Lambda to clip hls trasnsimision to .mp4

  15 novembre 2024, par Bruno Munné

  The ffmpeg input is through the public url of the bucket, I want to save the output in a tmp.mp4 file and I want to upload this file to the bucket. Locally the ffmpeg command works perfectly, lasting no more than 3 seconds and the output file weighs less than 1MB

  


  export const handler = async (event) => {
    try {
        const { m3u8, offset, duration, signedURL } = event;

        const clipKey = `clip_output.mp4`;
        const clipFilePath = path.join('/tmp', clipKey);

        execSync(`/opt/ffmpeglib/ffmpeg -i ${process.env.URL_CLOUDFLARE}/${m3u8} -ss ${offset} -t ${duration} -c copy -f mp4 ${clipFilePath}`)

        const fileContent = fs.readFileSync(clipFilePath);
        const resSign = await fetch(signedURL, {
            method: "PUT",
            headers: {
                "Content-Type": "application/octet-stream",
            },
            body: fileContent,
        });

        if (!resSign.ok) throw new Error(`Failed to upload file to S3: ${resSign.statusText}`);

        fs.unlinkSync(clipFilePath);

        return {
            statusCode: 200,
            body: JSON.stringify({
                message: 'Clip procesado y subido correctamente',
                clipKey: path.basename(clipFilePath)
            }),
        };
    } catch (error) {
        console.error("Error al procesar el clip:", error);
        return {
            statusCode: 500,
            body: JSON.stringify({ error: error.message }),
        };
    }
};


  


  The error it shows me is the following

  


   at genericNodeError (node:internal/errors:984:15)&#xA;    at wrappedFn (node:internal/errors:538:14)&#xA;    at checkExecSyncError (node:child_process:891:11)&#xA;    at execSync (node:child_process:963:15)&#xA;    at Runtime.handler (file:///var/task/index.js:16:3)&#xA;    at Runtime.handleOnceNonStreaming (file:///var/runtime/index.mjs:1173:29) {&#xA;  status: null,&#xA;  signal: &#x27;SIGSEGV&#x27;,&#xA;  output: [&#xA;    null,&#xA;    <buffer>,&#xA;    <buffer 66="66" 6d="6d" 70="70" 65="65" 67="67" 20="20" 76="76" 72="72" 73="73" 69="69" 6f="6f" 6e="6e" 4e="4e" 2d="2d" 37="37" 31="31" 30="30" 36="36" 34="34" 64="64" 35="35" 33="33" 63="63" 74="74" 61="61" 68="68" 3a="3a" 2f="2f" 1194="1194" more="more" bytes="bytes">&#xA;  ],&#xA;  pid: 13,&#xA;  stdout: <buffer>,&#xA;  stderr: <buffer 66="66" 6d="6d" 70="70" 65="65" 67="67" 20="20" 76="76" 72="72" 73="73" 69="69" 6f="6f" 6e="6e" 4e="4e" 2d="2d" 37="37" 31="31" 30="30" 36="36" 34="34" 64="64" 35="35" 33="33" 63="63" 74="74" 61="61" 68="68" 3a="3a" 2f="2f" 1194="1194" more="more" bytes="bytes">&#xA;}&#xA;ffmpeg version N-71064-gd5e603ddc0-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2024 the FFmpeg developers&#xA;built with gcc 8 (Debian 8.3.0-6)&#xA;configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg&#xA;libavutil      59. 27.100 / 59. 27.100&#xA;libavcodec     61.  9.100 / 61.  9.100&#xA;libavformat    61.  4.100 / 61.  4.100&#xA;libavdevice    61.  2.100 / 61.  2.100&#xA;libavfilter    10.  2.102 / 10.  2.102&#xA;libswscale      8.  2.100 /  8.  2.100&#xA;libswresample   5.  2.100 /  5.  2.100&#xA;libpostproc    58.  2.100 / 58.  2.100&#xA;END RequestId: 2fc8c51e-66c6-4c74-aa9c-fa10c11207a0&#xA;REPORT RequestId: 2fc8c51e-66c6-4c74-aa9c-fa10c11207a0  Duration: 164.82 ms Billed Duration: 165 ms Memory Size: 2048 MB    Max Memory Used: 88 MB  Init Duration: 185.19 ms&#xA;</buffer></buffer></buffer></buffer>

  


  Help to resolve it please

  


• How to compress videos on AMD RX 7900 XTX with ffmpeg ? [closed]

  19 novembre 2024, par cprn

  On Nvidia's GTX 1070 I used to do the below command, and it'd produce a way smaller file (often less than half of the original) without any visible degradation (at least for my eyes) :

  


  ffmpeg -hwaccel cuda -i file.mp4 -c:v hevc_nvenc -crf 20 file.small.mp4


  


  Now I switched to AMD's RX 7900 XTX and this command obviously doesn't work.

  


  What's the "equivalent" of that command ? As in : getting way smaller file with seemingly no quality loss.

  


  What I tried :

  


  

  1. av1_nvenc ends up in errors :

  


  


  ffmpeg -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 -hwaccel_output_format vaapi -i file.mp4 -c:v av1_nvenc file.small.mp4


  


  Impossible to convert between the formats supported by the filter 'Parsed_null_0' and the filter 'auto_scale_0'
[vf#0:0 @ 0x60f7c1aa7d80] Error reinitializing filters!
[vf#0:0 @ 0x60f7c1aa7d80] Task finished with error code: -38 (Function not implemented)
[vf#0:0 @ 0x60f7c1aa7d80] Terminating thread with return code -38 (Function not implemented)
[vost#0:0/av1_nvenc @ 0x60f7c1b10040] Could not open encoder before EOF
[vost#0:0/av1_nvenc @ 0x60f7c1b10040] Task finished with error code: -22 (Invalid argument)
[vost#0:0/av1_nvenc @ 0x60f7c1b10040] Terminating thread with return code -22 (Invalid argument)
[out#0/mp4 @ 0x60f7c1b0d680] Nothing was written into output file, because at least one of its streams received no packets.


  


  

  2. hevc_vaapi goes through the encoding, but produces 20% bigger files instead of smaller :

  


  


  ffmpeg -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 -hwaccel_output_format vaapi -i file.mp4 -c:v hevc_vaapi file.small.mp4


  


  No idea what I'm doing. I know next to nothing about video encoding, just what I read in the documentation, and I'm stuck. Also, I'm on Linux, but this shouldn't matter, I think.

  


  FFmpeg info :

  


  ❯ ffmpeg -version
ffmpeg version n7.1 Copyright (c) 2000-2024 the FFmpeg developers
built with gcc 14.2.1 (GCC) 20240910
configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-amf --enable-avisynth --enable-cuda-llvm --enable-lto --enable-fontconfig --enable-frei0r --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libdav1d --enable-libdrm --enable-libdvdnav --enable-libdvdread --enable-libfreetype --enable-libfribidi --enable-libglslang --enable-libgsm --enable-libharfbuzz --enable-libiec61883 --enable-libjack --enable-libjxl --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libplacebo --enable-libpulse --enable-librav1e --enable-librsvg --enable-librubberband --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpl --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-nvdec --enable-nvenc --enable-opencl --enable-opengl --enable-shared --enable-vapoursynth --enable-version3 --enable-vulkan
libavutil      59. 39.100 / 59. 39.100
libavcodec     61. 19.100 / 61. 19.100
libavformat    61.  7.100 / 61.  7.100
libavdevice    61.  3.100 / 61.  3.100
libavfilter    10.  4.100 / 10.  4.100
libswscale      8.  3.100 /  8.  3.100
libswresample   5.  3.100 /  5.  3.100
libpostproc    58.  3.100 / 58.  3.100