"converting" a couple of things come into play. Audio and video use different codecs - and the encoded formats can be sorted in different file types/formats. Which can be used to encode (or compress) the audio and video. Let me describe it this way: There are several differentįor video files (sometimes also called "wrappers"). Min=24 / scenecut=40 / intra_refresh=0 / rc=crf / mbtree=0 / crf=26.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00įormat/Info : Advanced Audio Codec Low Complexity with Spectral Band ReplicationĬ:\Users\User\Downloads\ac>mediainfo ac2.mp4įormat/Info : Advanced Audio Codec Low Complexity Sliced_threads=1 / slices=4 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=0 / weightp=1 / keyint=250 / keyint_ =0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 / threads=4 / lookahead_threads=4 / Here is all the mediainfo data for each file so you can decide for yourself if you can see from that, any substantial difference that took place when the volume was changed.Ĭ:\Users\User\Downloads\ac>mediainfo ac.mp4įormat profile : settings : CABAC / 1 Ref Framesįormat settings, Reference frames : 1 frame so a very small difference in size.Ĭ:\Users\User\Downloads\ac>mediainfo ac.mp4 | find /i "bit"Ĭ:\Users\User\Downloads\ac>mediainfo ac2.mp4 | find /i "bit" Notice that both files, source and destination, are similar size, 195MB. See for yourself the difference between the files, from mediainfo and DIR On the web you have the ffmpeg-all one too There's the ffmpeg-filters manpage as well as -h filter=NAME which shows you a brief of the options usable for the filter. No mention of what audio filters you can use.īut speaking to some ffmpeg experts, they mentioned re documentation. Then all it mentions is "-vol volume" And if you do Note- the following is a programming question involving c# but somebody mentions the above Increase/Decrease audio volume using FFmpeg Ffmpeg -i ac.mp4 -af volume=7 -vcodec copy ac2.mp4
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