BtbN changed the topic of #ffmpeg to: Welcome to the FFmpeg USER support channel | Development channel: #ffmpeg-devel | Bug reports: https://ffmpeg.org/bugreports.html | Wiki: https://trac.ffmpeg.org/ | This channel is publically logged | FFmpeg 7.0 is released
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<CounterPillow> If it's some Chinese thing there's like a >90% chance it's just some dumb cobbled together shit that uses zlib
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<qmr> help me save movie night! I think I need to reencode this file to have a simpler audio. mp3 maybe? vlc android tv isnt playing it
<qmr> Stream #0:0[0x1](und): Video: hevc
<qmr> Stream #0:1[0x2](eng): Audio: aac
<qmr> someone know the incantation to magic the audio to something else?
<soreau> what player are you targeting?
* soreau googles 'vlc android tv'
<qmr> vlc something something on android tv. samba isn't working so im playing it from kodi over upnp. idk if that matters. other files play over upnp ( kodi is shitting itself after 5 seconds with new 4k tv not sure why )
<soreau> ah
<qmr> -i input -acodec mp3 -vcodec copy maybe?
<soreau> ok so just.. reencode it real quick :)
<soreau> what makes you think it's the audio?
<soreau> do you have a mediainfo or ffprobe output of working vs the nonworking files?
<aaabbb> vlc can play everything
<soreau> upload the info somewhere like pastebin
<soreau> aaabbb: all 0's?
<soreau> heh
<aaabbb> soreau: if it's pcm yes! haha
<soreau> lol
<qmr> soreau: that's what I thought! a random sampling of other files play fine, but this file no audio
<aaabbb> qmr: if you can, use something better than mp3. try vorbis or opus
<soreau> qmr: pastebin the output of mediainfo for both the working and nonworking files
<soreau> and then look at them and decide what you need to do :)
<aaabbb> if other aac files are playing then it seems like the aac bitstream is broken
<soreau> but if it's video only and no audio.. make sure the volume is up and speakers are working
<qmr> as I said other files are playing fine
<soreau> but yea, maybe just a broken audio stream on the file
<soreau> maybe it's all 0's or something
<aaabbb> qmr: ffmpeg -vn -i in.mp4 -af volumedetect -f null -
<aaabbb> and paste the output, that will check the volume and see if there's a chance that the audio truly is silent
<soreau> (I mean it could be any constant value really, not necessarily 0)
<qmr> the file plays fine w mpv on my desktop
<soreau> oh, get out
<furq> 06:26:51 ( soreau) qmr: pastebin the output of mediainfo for both the working and nonworking files
<furq> do this please
<soreau> qmr: you're saying that mpv is somehow better than vlc on android tv?
<soreau> no wai
<aaabbb> soreau: they both use libavcodec internally
<soreau> <aaabbb> vlc can play everything
<aaabbb> mpv can play everything too, almost :p
<soreau> aaabbb: but what version(s)? :P
<aaabbb> the main difference between vlc and it is that it adds some custom muxers iirc
<aaabbb> is that vlc does*
<soreau> vlc isn't the hottest thing I've seen
<soreau> maybe a hot steaming pile..
<soreau> gstreamer if I had a choice
<aaabbb> them's fighting words
<soreau> and mpv aint so bad either
<furq> i think the official position of this channel is that mpv is better than vlc
<aaabbb> oh i agree
<soreau> sounds great
<furq> including the people who have videolan git access
<aaabbb> i'm comparing vlc to things like windows media player, not to mpv :p
<qmr> soreau: desktop is mpv, android tv box is vlc
<soreau> qmr: that doesn't say mediainfo..
<furq> maybe because it's 5.1 aac
<aaabbb> qmr: are any of the other working audios 5.1?
<furq> and then the second one is mp3 in mp4 which is also not well supported
<soreau> qmr: have you tried vlc on desktop?
<furq> try converting to ac3 i guess
<furq> or stereo aac
<furq> -ac 2 -c:a aac
<aaabbb> why ac3? ffmpeg's ac3 encder kinda sucks
<furq> does it
<qmr> oh shit, 5.1. I'm remembering having this problem in the past
<aaabbb> -ac 2 will dowmix it, but be aware that it will completely drop lfe
<furq> i thought ffmpeg's ac3 encoder was pretty good
<soreau> too many audio channels and vlc pukes?
<furq> i would expect it to work in desktop aac
<furq> desktop vlc
<furq> but 5.1 aac is generally not well supported
<furq> and mp3 in mp4 likewise
<soreau> wierd
<furq> browsers won't play mp3 in mp4 even though they will play mp3 standalone
<soreau> seems like those two would be friends
<aaabbb> furq: i had thought that even ffmpeg's aac encoder was better than its ac3 encoder...
<qmr> Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 224 kb/s (default) after -ac 2
<furq> pretty sure ffmpeg's ac3 encoder is based on aften
<qmr> so I dont think it downmixed
<furq> and i think that's the best oss one
<qmr> maybe cause -acodec copy?
<aaabbb> yeah that's it
<furq> well yeah
<soreau> qmr: time's running out, it's movie night! xD
<aaabbb> -acodec copy will not downmix
<qmr> soreau: you don't even know, kid is too sleepy, pregnant wife is pissed and hungry, I'm supposed to be making pancakes!
<furq> if you know a better oss ac3 encoder then it'd be nice to know
<soreau> LMAO
<soreau> real
<aaabbb> ffmpeg -i in.mp4 -c:v copy -c:a aac -b:a 256k -ac 1 out.mp4
<aaabbb> try that ^
<furq> -ac 2
<aaabbb> yes
<aaabbb> sorry i meant -ac 2
<aaabbb> the keys are like, right next to each other
<soreau> qmr: I made cream-of-wheat to send mine to bed heh
<furq> kid or pregnant wife
<soreau> xD
<aaabbb> furq: i don't think there are any oss ac3 encoders that are anything like dolby's toolkit
<aaabbb> which is unfortunate
<soreau> fortunately, the kid and she's not pregnant (again)
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<aaabbb> so as of 2016 i remember that fdk-aac was approximately 32kbps better than ffmpeg aac, like listening tests showed native aac requiring 32kbps higher bitrate to achieve the same quality which held pretty true at most bitrates. is that still the case?
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<qmr> thank you everyone, that last one worked
<qmr> why doesnt vlc do this downmixing itself
<soreau> it's always the last one that works
<soreau> because after that, you stop trying ;)
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<qmr> somewhat related, why is this tv a steaming pile of shit? "input" has worked for ~30 years to switch inputs. now I have to go balls deep in menus to change input, and wait for "detecting" or tell the TV it's a PC.
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<furq> because it's a tv that was made in the last 10 years
<furq> so its principal function is no longer to display video but to serve you ads
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<qmr> furq: yes, quite disgusted with that, trying to only use devices I control. I skipped the setup
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<dontdieych2_> Could I change '-threads' option during runtime?
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<BtbN> no
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<aaabbb> BtbN: he could limit the cpu usage if on linux though, but each thread would still be running
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<enva2712> anyone active?
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<DeHackEd> no I'm pretty lethargic
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<nemo_magneet> i have no clue if ffmpeg runs .f1a
<nemo_magneet> its so weird co tainer sruff
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