<zumba_addict>
can we concat copy if our mp4 file sources are the same resolution but different pix_fmt(no re-encoding)? My slow machine is taking so much time.
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<zumba_addict>
wow it worked! I tried with yuv420p and yuv422p. I can play it with vlc and mpv but not with macosx quicktime player. It cannot understand it
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<zumba_addict>
i'm uploading it now in youtube to test whether it will re-encode it or say invalid video format
<zumba_addict>
kinda weird that uploading is stuck at 0% for 5 mins now
<zumba_addict>
oh wow, finally it moved. It's now at 1% LOL
<zumba_addict>
so friggin weird, it went back to 0%. I have never seen this kind of uploading in 13 years I've used youtube
<zumba_addict>
and uploading is still stuck at 0% for almost 20 mins now, really weird
<zumba_addict>
youtube is not even complaining about the file I am currently uploading
<zumba_addict>
wow, it hasn't moved yet. It's still at 0%, Maybe Youtube thinks I'm doing something crazy
<zumba_addict>
i cancelled it. Trying it with another browser
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<zumba_addict>
not a browser issue, file issue. Can't believe Youtube can't figure it out
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<another|>
I read the backlog. can't start processing the file if it's not moov at front
<another|>
also subsampling change might be not supported
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<zumba_addict>
ah
<zumba_addict>
oh wow, it's working now. If I am using my office laptop, it doesn't work. Maybe they put restrictions. It was working before. I'm now uploading using my linux machine
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<zumba_addict>
upload is complete
<zumba_addict>
what's weird though is that it didn't create a thumbnail. Or maybe because it's not complete yet, 90 minutes to complete with post processing
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<BillTorvalds>
My ffmpeg has started acting up in the most puzzling manner. After failing to convert a PNG to JPEG with numerous different commands, both ones I have long used and ones suggested by ChatGPT/online, I tried the most basic one I could find: `ffmpeg -i test.png output.jpg`... Yet it too gives the nonsensical error: `The specified filename 'output.jpg' does not contain an image sequence pattern or a pattern is invalid.`. What is wrong?!
<BillTorvalds>
(Linux Debian, installed via apt, no exotic/fancy/custom setup)
<JEEB>
yup, since that is probably utilizing image2 writer which is expecting a sequence
<BillTorvalds>
JEEB: I mean, why would it even "look inside" the file that doesn't exist yet and which I want it to create?
<CounterPillow>
it's not looking inside the file
<CounterPillow>
it's looking for a pattern in the filename
<JEEB>
anyways, extract the autobuild into your homedir and launch it with the full path instead of just "ffmpeg"
<BillTorvalds>
It thinks that the PNG is a video/animation?
<JEEB>
no, it thinks everything has the possibility of having multiple things
<JEEB>
you can check that the output module it utilizes is image2
<JEEB>
most likely
<BillTorvalds>
"Output #0, image2, to 'output.jpg':"
<JEEB>
yup
<BillTorvalds>
Just confused about what is actually happening. I would very much like to not have to do some "custom update" mechanism for ffmpeg too, which I already had to do with yt-dlp and a couple of others because the apt version is always ancient and useless.
<JEEB>
welcome to distros
<aaabbb>
BillTorvalds: switch to a bleeding edge repository
<JEEB>
you get stability, but you get to eat the grass you were given
<aaabbb>
i'm sure someone has made a bleeding edge repository for ffmpeg
<BillTorvalds>
"ffmpeg version 5.1.4-0+deb12u1"
<JEEB>
aaabbb: for just testing it out I'd say just utilizing BtbN's auto-builds are Good Enough
<aaabbb>
true
<JEEB>
BillTorvalds: nice, not 4.4 xD
<JEEB>
gesus I've become so used to it being from 2020
<JEEB>
but this message is in image2 now as well
<aaabbb>
4.4? what kind of new cutting edge tech is that? i'm still on 4.3!
<JEEB>
it will warn when apparently image count matches the amount of images the file name can match
<JEEB>
and yea, there is a separate "mjpeg" writer which will not warn you about that and just push one or more JPEG packets as-is
<JEEB>
welcome to FFmpeg and image formats
<JEEB>
people didn't want to implement outputting to multiple files in ffmpeg cli app, so now we have image2
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<BillTorvalds>
I expected to find some sort of "custom APT repository" instructions on ffmpeg.org, but it just mentions and links to a Debian website. As I perceived things, you wanted me to use a newer version than the one I already have installed, which was installed with ffmpeg in apt.
<BillTorvalds>
But I see no instructions or any mentions whatsoever on how to install it from anywhere else.
<BillTorvalds>
So this is a known bug in my version of ffmpeg, which means the one all Debian users use?
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<BillTorvalds>
The power cut here. I did not see any replies if you sent some.
<JEEB>
BillTorvalds: no, my pointing towards BtbN's builds was just the usual thing of if you're seeing something seemingly weird with a packaged version, I will first of all point you towards an easy manner of testing the current master
<BillTorvalds>
(You'd think that the workers who cut power randomly would have some sort of button that they can press which warns people a few minutes in advance that there will be a power cut, and this is notified via e-mail if such has been set up in the apartment site...)
<JEEB>
(if you wish you can always check if current master is green on FATE before downloading a specific build, but generally not necessary)
<BillTorvalds>
JEEB: Well, I have no reason to assume that this error will go away in a newer, less stable release, do I?
<JEEB>
it's not an error btw
<BillTorvalds>
Not?
<JEEB>
> av_log(s, AV_LOG_WARNING, "The specified filename '%s' does not contain an image sequence pattern or a pattern is invalid.\n", s->url);
<JEEB>
> AV_LOG_WARNING
<BillTorvalds>
Well, the resulting file is called .png and not .jpg.
<BillTorvalds>
Even though the outfile is a .jpg.
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<JEEB>
then that warning has nothing to do with it
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<JEEB>
that warning is just due to image2 getting picked before the mjpeg writer
<JEEB>
and it warns you at the point where you hit the amount of images which would fit in your output definition
<JEEB>
if you are somehow getting .png instead of .jpg as a file name, even though Output #0 is 'something.jpg', then please check the master build from BtbN which I linked. he is part of the community and the build process is 100% open
<JEEB>
and then if it still happens there, please report it as a bug
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<BillTorvalds>
JEEB: Only after downloading the build you mentioned and trying it out in a different dir, noticing that this only happens (with either version of FFMPEG) in the first dir, did I realize that this was a result of my automatic transformation of any JPEG to PNG in the entire dirtree under which I was testing this. It was so efficient that I never noticed it first being saved as .jpg and then getting instantly turned into a .png. Sorry. A feature
<BillTorvalds>
which saves me countless amounts of time every day has just wasted significant time just because I forgot about its existence... ;S
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