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  • What's the ideal encoding for rendering an immediate video (e.g. preview) while waiting for the high-quality video to render ? [on hold]

    20 avril 2018, par allanbreyes

    I’m working on an application that renders an MLT (OSS non-linear video-editing engine) project on a web server, which uses ffmpeg under the hood. While waiting for the high-quality render to finish (several minutes), I need to make a "best-effort" render in parallel so that users can immediately (i.e. real-time) see the results. What encoding works best for this ?

  • FFmpeg on windows 7, encode video in mp4 for HTML 5 video fail

    14 avril 2013, par manonthemoon

    I try to encode my video with FFmpeg, to convert to mp4.
    But the video doesn't work on html 5. I don't understand why.

    I found this command on the web and I tried it :

    ffmpeg.exe -i wildlife.wmv -b 1500k -vpre slow -vpre baseline -vcode libx264 \
  -g 30 wildlife.mp4

    But it fails, and I have this error :

    File for preset 'slow' not found

    I check the folder "presets" and the preset is on the folder, so I don't understand why it's telling me this error.
    I tried with the complete path, it fails too.

  • ffmpeg Video on top on other video

    15 mai 2022, par Harinder

    I am trying to add a video on top of another video. Code tried :

    


    ffmpeg -i 10sec.mp4 -i 1.mp4 \
       -filter_complex "overlay=main_w-overlay_w-5:5" \
       -codec:a copy output2.mp4


    


    if overtake old video as both video sizes are the same I don't know how to scale 2nd video down.

    


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