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gotosocial - Link to source
#internet #lemmy #PeerTube #writefreely #fediverse #people #links #podcast #YouTube #stream #interview #open #fsf #fedi #nonprofit #CastoPod #show #vod #signup #openinternet #fedizen #boostplease #episode #firesidefedi #fedicast #bigtechfree #peopleoverplatforms #protocolsoverplatforms #btfree #tubefree @Devine Lu Linvega
in reply to Fireside Fedi

R.L. Dane 🍵
gotosocial - Link to source
R.L. Dane 🍵
• •

I hate to be a complainer, but Devine's audio is kind of soft.

Can I recommend a good #ffmpeg command to boost audio levels?

ffmpeg -i audio.m4a -filter:a "speechnorm=e=50:r=0.0001:l=1" audio-normalized.m4a

...usually does wonders for podcasts that I get from the web that are too soft or too dynamic (one speaker considerably louder than the other), and it runs quite fast.

Thanks to both of you for everything! :)

#ffmpeg
in reply to R.L. Dane 🍵

Fireside Fedi
gotosocial - Link to source
Fireside Fedi
• •
Not a complainer in the LEAST. You're the not the first one that has told me that audio levels need normalized, I just never knew how to do it. :-D lol Thank you for the suggestion. *I* hate to be the complainer now, lol, but the file is too big to Castopod. It ended up being 2.1GB. is there a way to normalize the audio and make it smaller? The original file is 127MB and after normalization it came out to 2.1GB.
in reply to Fireside Fedi

R.L. Dane 🍵
gotosocial - Link to source
R.L. Dane 🍵
• •

Oh, definitely! ffmpeg will usually match the input and output bitrates to produce generally the same-sized file (IIRC), but if it doesn't, just pick a bitrate and add -b:a {number}k to the command.

So, for 64k (plenty enough for speech-only audio), something like:

ffmpeg -i ${input_file} -filter:a "speechnorm=e=50:r=0.0001:l=1" -b:a 64k ${output_file}

You can also use audacity and its compressor filter for the same effect (with some visual feedback), but I find ffmpeg is actually much faster. XD
in reply to R.L. Dane 🍵

Fireside Fedi
gotosocial - Link to source
Fireside Fedi
• •
AH! I see what I did. I normalized the video into audio. That's why it's so huge! :-D Sorry about that! I'm going to add this to my audio cut tool. And yeah, I'd MUCH rather use CLI. I'm a Linux nerd and I just find it easier ... once I actually understand the command! :-D Thank you so much for your help! Gonna upload the audio to castopod now.
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