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
<KillerWasp>
i try set ->frame_size=44100 for AVCodecContext, but avcodec_open2 change it to 1024, then instead of change 1 second of audio, i only can change 43.06640625 times in 1 second, which mean i must send each 0.0232199546485260770975056689342~~~~ second. Very imprecise. I must use av_interleaved_write_frame in a mandatory pts/dts juggle?
alexherbo2 has quit [Remote host closed the connection]
emanuele6 has joined #ffmpeg
RobMeades has quit [Quit: Client closed]
HarshK23 has joined #ffmpeg
moviuro has quit [Quit: Reboot? Or did my jail(8) just die?]
kmikita has quit [Ping timeout: 244 seconds]
moviuro has joined #ffmpeg
moviuro has quit [Ping timeout: 260 seconds]
relue has joined #ffmpeg
foul_owl has quit [Ping timeout: 252 seconds]
billchenchina has joined #ffmpeg
foul_owl has joined #ffmpeg
billchenchina- has joined #ffmpeg
billchenchina has quit [Ping timeout: 252 seconds]
moviuro has joined #ffmpeg
zeromind has quit [Ping timeout: 246 seconds]
zeromind has joined #ffmpeg
billchenchina- has quit [Remote host closed the connection]
foul_owl has quit [Ping timeout: 246 seconds]
moviuro has quit [Ping timeout: 248 seconds]
System_Error has quit [Remote host closed the connection]
llinguini has quit [Read error: Connection reset by peer]
mindfreeze has quit [Read error: Connection reset by peer]
termos has quit [Read error: Connection reset by peer]
buhman has quit [Read error: Connection reset by peer]
Son_Goku has quit [Ping timeout: 272 seconds]
signalhunter has quit [Read error: Connection reset by peer]
signalhunter8 is now known as signalhunter
boxrick has quit [Ping timeout: 246 seconds]
phantomics__ has joined #ffmpeg
LurkingBOB has joined #ffmpeg
mindfreeze has joined #ffmpeg
llinguini has joined #ffmpeg
termos has joined #ffmpeg
buhman has joined #ffmpeg
rodeo has joined #ffmpeg
Sketch has joined #ffmpeg
bigfoot547 has quit [Ping timeout: 246 seconds]
itok has quit [Ping timeout: 252 seconds]
itok has joined #ffmpeg
FlorianBad has quit [Read error: Connection reset by peer]
boxrick has joined #ffmpeg
FlorianBad has joined #ffmpeg
phantomics_ has quit [Ping timeout: 246 seconds]
MightyBOB has quit [Ping timeout: 246 seconds]
Ekho has quit [Ping timeout: 246 seconds]
Norkle has quit [Ping timeout: 246 seconds]
zmt00 has quit [Ping timeout: 248 seconds]
bigfoot547 has joined #ffmpeg
rcombs has joined #ffmpeg
Son_Goku has joined #ffmpeg
Ekho- has joined #ffmpeg
StephenLynx has quit [Quit: Leaving]
l4yer has joined #ffmpeg
Dagger has quit [Ping timeout: 276 seconds]
Dagger has joined #ffmpeg
System_Error has quit [Remote host closed the connection]
System_Error has joined #ffmpeg
coldfeet has joined #ffmpeg
javabean has quit [Remote host closed the connection]
javabean has joined #ffmpeg
coldfeet has quit [Quit: Lost terminal]
Elysion has joined #ffmpeg
ZLima12 has quit [Remote host closed the connection]
ZLima12 has joined #ffmpeg
wziko has joined #ffmpeg
wziko has quit [Ping timeout: 246 seconds]
rv1sr has joined #ffmpeg
wziko has joined #ffmpeg
wziko has quit [Max SendQ exceeded]
jtgd has quit [Quit: WeeChat 4.4.4]
jtgd has joined #ffmpeg
EmleyMoor has quit [Ping timeout: 252 seconds]
yans has joined #ffmpeg
EmleyMoor has joined #ffmpeg
EmleyMoor has quit [Ping timeout: 248 seconds]
EmleyMoor has joined #ffmpeg
Magissia has quit [Ping timeout: 245 seconds]
zmt01 has quit [Read error: Connection reset by peer]
zmt01 has joined #ffmpeg
Tano has quit [Quit: WeeChat 4.4.2]
xx has joined #ffmpeg
MRiddickW has joined #ffmpeg
emanuele6 has quit [Ping timeout: 252 seconds]
ShadowJK has quit [Ping timeout: 272 seconds]
lavaball has joined #ffmpeg
wziko has joined #ffmpeg
wziko has quit [Ping timeout: 265 seconds]
Blacker47 has joined #ffmpeg
manwithluck has quit [Ping timeout: 252 seconds]
manwithluck has joined #ffmpeg
EmleyMoor has quit [Quit: Gateway shutdown]
EmleyMoor has joined #ffmpeg
emanuele6 has joined #ffmpeg
LurkingBOB is now known as MightyBOB
wziko has joined #ffmpeg
wziko has quit [Ping timeout: 248 seconds]
alexherbo2 has joined #ffmpeg
MRiddickW has quit [Ping timeout: 245 seconds]
wziko has joined #ffmpeg
Vonter has quit [Ping timeout: 276 seconds]
Vonter has joined #ffmpeg
wziko has quit [Ping timeout: 245 seconds]
EmleyMoor has quit [Ping timeout: 246 seconds]
EmleyMoor has joined #ffmpeg
EmleyMoor has quit [Ping timeout: 252 seconds]
EmleyMoor has joined #ffmpeg
rex has quit [Ping timeout: 265 seconds]
rex has joined #ffmpeg
crossby1004 has joined #ffmpeg
crossby1004 has quit [Client Quit]
alexherbo2 has quit [Remote host closed the connection]
alexherbo2 has joined #ffmpeg
iconoclast_hero has joined #ffmpeg
wondiws has joined #ffmpeg
wziko has joined #ffmpeg
wziko has quit [Ping timeout: 248 seconds]
Traneptora has joined #ffmpeg
Keshl has quit [Ping timeout: 248 seconds]
Keshl has joined #ffmpeg
wobbol has quit [Ping timeout: 276 seconds]
wondiws has quit [Read error: Connection reset by peer]
foul_owl has quit [Ping timeout: 252 seconds]
foul_owl has joined #ffmpeg
Tano has joined #ffmpeg
alexherbo2 has quit [Ping timeout: 240 seconds]
crossby1004 has joined #ffmpeg
stolen has joined #ffmpeg
StephenLynx has joined #ffmpeg
omegatron has joined #ffmpeg
wziko has joined #ffmpeg
wziko has quit [Ping timeout: 265 seconds]
nasso has joined #ffmpeg
<nasso>
hello! i'm trying to use `hwupload` with the lavfi input virtual device. however, command-line options like `-init_hw_device` and `-filter_hw_device` don't seem to apply when using it? only when using `-vf`?
minimal has joined #ffmpeg
bitbinge has joined #ffmpeg
<nasso>
actually let's get straight to the point: how can i know if ffmpeg is doing the equivalent of a `hwdownload` between my filter graph and my encoder?
<nasso>
i have a hardware encoder (h264_nvenc) and i also use hardware accelerated filters, and i'd like to make sure ffmpeg is keeping the frames in hardware between the two
<nasso>
`-dumpgraph` doesn't seem to show my `-vf` graph, and the debug logs don't seem to mention any `auto_scale`. however, i also don't see an auto_scale when i use libx264, so i guess im just not looking for the right thing?
<welder>
I checked the pipewire audio recording patch that has been submitted last year. The reviewer suggested to implement it as lavfi and not as device (-f pipewire), because apparently the second option is a hack, even thought pulseaudio is recorded this way. What's wrong with the approach to implement it as -f flag?
acidbunny has joined #ffmpeg
<kepstin>
lavfi (libavfilter) doesn't make sense; sure they didn't mean libavformat?
<furq>
i assume because pipewire can carry video as well as audio
<kepstin>
hmm. requiring that folks use libavfilter for something that they expect to be a device source sounds like it would be quite confusing.
<kepstin>
I mean, i suppose "-f lavfi" works, but still :/
<furq>
there are also already devices that carry video and audio
<furq>
but i don't know anything about lavd so maybe it really sucks
<JEEB>
kepstin: avfilter works without inputs ;) (just `-filter_complex STUFF`, no need for `-f lavfi -i INPUT`)
<kepstin>
sure, but -f lavfi makes it easier to drop into existing workflows that already have other filters.
<JEEB>
also the reason why capture sources are starting to not be devices is because avdevice/avformat limitations
<furq>
is this to do with outputting hardware frames or more general limitations
<JEEB>
hardware frames is one thing, but in general the API is not meant for receiving frames
<johnjaye>
can ffmpeg refer to the end time of the video?
<johnjaye>
i want to fade out 7 seconds before the video end. is there a symbolic way to do it?
<johnjaye>
or do i need absolute time stamps
bitbinge has quit [Quit: bitbinge]
cmc has quit [Remote host closed the connection]
jemius has joined #ffmpeg
wziko has joined #ffmpeg
wziko has quit [Max SendQ exceeded]
bitbinge has joined #ffmpeg
five61848033917 has quit [Remote host closed the connection]
five61848033917 has joined #ffmpeg
<kepstin>
johnjaye: ffmpeg filters do not have access to information about the length of the stream they're processing, so if you're doing a fade-out via filter, you'll have to provide absolute time stamps.
coldfeet has joined #ffmpeg
cmc has joined #ffmpeg
noobaroo has joined #ffmpeg
<noobaroo>
how can I remove empty timestamps in middle of video?
<kepstin>
noobaroo: you'll have to better explain what you mean by that.
System_Error has quit [Remote host closed the connection]
System_Error has joined #ffmpeg
five61848033917 has quit [Remote host closed the connection]
five61848033917 has joined #ffmpeg
Dan97 has joined #ffmpeg
<Dan97>
I'm trying to segment a wav file exactly at specific timestamps or frames but when I check the result with ffprobe the files are close but not exactly what I want
<Dan97>
shouldn't it give me a first segment with exactly 50 audio frames and 1 second?
crossby1004 has quit [Quit: leaving]
<sonicrules1234>
JEEB: For the results of the lossless compression I was doing the other day, for file size: libaom-av1 < x264 < svt-av1 < ffv1 . The clip was 30 seconds with very high movement, changes
<sonicrules1234>
*movement/changes
<noobaroo>
kepstin When i save livestreams with yt-dlp then often times there is lots of small several second periods of timestamps with no video or audio, and also when i network stream with mpv and then use dump-cache ~/video.mkv then the entire timestamps will be empty except for the areas that i watched.
<sonicrules1234>
Also, the clip was from a blu-ray
<noobaroo>
I keep switching between various mpv --video-sync options like display-sync, adrop, and now most recently desync, which is supposed to play at constant rate according to system clock and only meant for testing. But in mpv docs it says the entire flag of --display-sync (and all of its possible values) doesn't work on VFR for typical containers (including mkv)
<sonicrules1234>
noobaroo: I've had problems with mpv for youtube livestreams too recently. I end up having to use streamlink instead of yt-dlp
<JEEB>
sonicrules1234: and that was with similar parameters? GOP size etc
<sonicrules1234>
Yeah, gop_sizes were all defaults
<JEEB>
the defaults are not the same :D
<sonicrules1234>
> .>
<sonicrules1234>
Any other parameters I should keep the same?
<JEEB>
x264 defaults to 250 frames, was it?
<JEEB>
(that's the max GOP duration of course, if the encoder thinks it's done a long enough GOP and that this would be a Good Spot then it will of course finish the GOP earlier
<furq>
Dan97: the first one should work, but -segment_frames refers to video frames
<furq>
maybe try the asegment filter
<JEEB>
it's kinda hard to figure these things out, which is why back when I did encoder testing I just attempted to max things out. although even there I utilized the fact that one encoder had literally a standardized config file that was utilized by the format developers, and others had presets
Vonter has quit [Ping timeout: 276 seconds]
jemius has quit [Quit: Leaving]
Vonter has joined #ffmpeg
<furq>
how many orders of magnitude faster was x264 than aom
<Dan97>
furq: thanks. I can't find info about asegment filter in the docs
<johnjaye>
i tried changing [0:v] to [0] but that didn't get the audio in either
<JEEB>
[thing] are definitions from within the filter graph when utilized in maps
<JEEB>
so if you actually just want stuff from input, you do a normal map
<JEEB>
without the []
<johnjaye>
oh thanks that works. i had ome up with a complicated way of putting [1:a] into the filtergraph and splitting it and then sending one output to the anullsink
Buliarous has joined #ffmpeg
Dan97 has quit [Ping timeout: 240 seconds]
YuGiOhJCJ has joined #ffmpeg
HarshK23 has joined #ffmpeg
coldfeet has quit [Quit: Lost terminal]
Ohtani has joined #ffmpeg
squeaktoy has quit [Ping timeout: 265 seconds]
squeaktoy has joined #ffmpeg
Blacker47 has quit [Quit: Life is short. Get a V.90 modem fast!]
lusciouslover has quit [Ping timeout: 260 seconds]
sihloo has quit [Ping timeout: 255 seconds]
lusciouslover has joined #ffmpeg
cmc has quit [Ping timeout: 264 seconds]
sihloo has joined #ffmpeg
bitbinge has quit [Ping timeout: 264 seconds]
nd has quit [Ping timeout: 252 seconds]
nd has joined #ffmpeg
wziko has joined #ffmpeg
wziko has quit [Max SendQ exceeded]
lavaball has quit [Remote host closed the connection]
bitbinge has joined #ffmpeg
iive has joined #ffmpeg
sihloo has quit [Ping timeout: 246 seconds]
cmc has joined #ffmpeg
lucasta has joined #ffmpeg
lucasta has quit [Remote host closed the connection]
JanC_ has joined #ffmpeg
JanC has quit [Killed (calcium.libera.chat (Nickname regained by services))]
JanC_ is now known as JanC
KimK has joined #ffmpeg
Marth64 has quit [Quit: Leaving]
sihloo has joined #ffmpeg
Marth64 has joined #ffmpeg
xx has quit [Ping timeout: 264 seconds]
fairway has joined #ffmpeg
<fairway>
i understand the point of higer resolution 4k vs 1080p vs 480p, what is the point of using 60fps vs 30fps
wziko has joined #ffmpeg
wziko has quit [Max SendQ exceeded]
<sonicrules1234>
fairway: Can you check your monitor's settings? Do you have a refresh rate of 120hz or higher available?
<fairway>
no, i am using 75hz
<sonicrules1234>
Ok, switch to 60hz or 30hz. Then move your mouse around and switch back. Move your mouse around again
wziko has joined #ffmpeg
System_Error has quit [Remote host closed the connection]
<sonicrules1234>
There's a noticeable difference
<fairway>
there is no such thing as 30hz
<fairway>
only 60hz or 75hz
<sonicrules1234>
Try 60hz then
<sonicrules1234>
It won't be as noticable
<fairway>
and no, i don't see the difference between 60hz an d75hz
<sonicrules1234>
If you had something like 120hz available, you would see the difference
<sonicrules1234>
It's way smoother
<fairway>
sonicrules1234 then how come you don't see 120 fps videos
<fairway>
you will not find a video that is using 120 fps
<sonicrules1234>
I say 120hz because the difference is way more noticable
<fairway>
answer my question
<sonicrules1234>
120hz would double the size of the video?
<sonicrules1234>
120fps*
<fairway>
by size you mean file-size?
<sonicrules1234>
Yes
<fairway>
yes it would, it would actuallyy quaduple the size of 30fps video
<fairway>
assumingg such video exist
System_Error has joined #ffmpeg
SuicideShow has quit [Ping timeout: 260 seconds]
<another|>
not exactly double. inter compression can shave some of that off
<fairway>
another| 30fps ---> 120fps that's more than double
SuicideShow has joined #ffmpeg
<another|>
oh you mean from 30? well, depends on the content and the codec
dannyg has joined #ffmpeg
dannyg has quit [Client Quit]
<fairway>
another| do you see the point of using 60fps instead of 30fps
<another|>
yes of course
<fairway>
then how come we don't see 120 fps videos
<another|>
diminishing returns
<fairway>
another| so do you think there is a number (fps) where you say, it's enough
<fairway>
there is not point of higher fps
<fairway>
not = no
<another|>
sure.
<fairway>
okay what is the number
<another|>
depends on the content
<fairway>
let's say sports
<fairway>
let' say content = sports
<another|>
maybe 120 ?
<fairway>
okay fair enough
<fairway>
another| what about 96khz vs 48khz audio
<another|>
what about it?
wziko has quit [Ping timeout: 246 seconds]
<fairway>
do you think 96hz is pointless
<another|>
there use cases for both
<fairway>
another| what about people that says human's eye cannot see more than 30 fps
<fairway>
or human ears cannot hear more than 48khz
rv1sr has quit []
<another|>
whoever says that about eyes has no idea what they're talking about