Here you can see we are fetching/downloading the videolink.mp4 file and saving (copying) it as downloadedfile.mp4 ffmpeg -i "" -c:v libx264 -preset fast -crf 18 downloadedfile.mp4 Will return all kinds of information about the media file such as bitrate, fps, encoded type, subtitles info, audio info, channels and more. Now comes the fun, the basics of FFmpeg is as follows ffmpeg -i ""
Next create a new text file and rename it something like fetch.bat so it’s now the bat extension rather than text. I am going to cater this guide towards windows users, once you have downloaded the FFmpeg.zip open it and drag the 3 files from the bin folder into C:\Users\YOURUSERNAME\Īnd make sure the files are unblocked by right clicking and going to properties and ticking UNBLOCK at the bottom of the details tab. I find it very good at downloading streams (m3u8 and ts files). Use -vf yadif=1 as interlace filter to prevent interlacing artifacts: ffmpeg -i input.mpg -vf yadif=1 -c:v libx265 -crf 30 -c:a libopus -b:a 56k -frame_duration 60 output.FFmpeg is a very simple way to download, convert and stream media (video and audio). For non-interlaced videos ffmpeg -i input.mpg -c:v libx265 -crf 30 -c:a libopus -b:a 56k -frame_duration 60 output.mkv For interlaced videos My recommendation is to use CRF 30 for lower-quality videos like analog grainy-ish videos, CRF 23 where you want to preserve the utmost quality, and CRF 26 for everything else.
However, these are painfully slow, running at 0.0046x speed (libaom-av1) and 0.076x speed (libvpx-vp9) compared to 1.5x speed for libx265 for a test video since these encoders seem not to be highly optimized yet.ĬRF means constant rate factor, higher values mean better quality but larger file size. I also tried VP9 and AV1 which should result in even lower file size at the same quality. When you don’t want your video archive to eat up too much space, I recommend encoding them as H.265 and OPUS as these codecs provide excellent quality with typically less than half the bitrate of older formats.
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