[Ffmpeg-devel-irc] ffmpeg.log.20190110

[burek]

[02:57:58 CET] <foo> What makes more sense: a voice memo at 64 kBits with 2 audio channels, or a voice memo at 128 kBits with 1 audio channel? I'm looking for best experience with lowest file size
[02:58:01 CET] <foo> thank you
[03:00:47 CET] <klaxa> for a voice memo mono should be good enough
[03:03:10 CET] <furq> did you put those bitrates the right way around
[03:03:38 CET] <furq> anyway yeah mono is fine and opus should sound good at like 16kbps
[03:06:29 CET] <foo> klaxa / furq - just realized, garageband must have took one channel and made it into two... in which case it's not even true stereo and one channel probably makes the most sense
[03:26:38 CET] <foo> furq / klaxa - bah, garageband doesn't seem to have an option to make the audio mono, and 64 kBits sounds terrible. I think I'll export at 192 from garageband in stereo and then convert to mono with ffmpeg
[03:32:24 CET] <foo> mp3 @ 0x7ff475000e00] overread, skip -5 enddists: -3 -3peed=40.7x - that's strange.
[03:34:25 CET] <foo> What does that mean?
[04:35:34 CET] <primenum> Launching several processes that perform encoding of audio and measuring stats via vmstat (user space cpu, mem) with the aim of finding a max # of simultaneous audio encodings. Should I consider other metrics?
[06:40:08 CET] <ttgg> hi
[06:40:37 CET] <ttgg> C:\>"c:\ffmpeg\bin\ffmpeg.exe" -r 1/5 -start_number 0 -i "C:\ffmpeg\imaages\*.jpg" -c:v libx264 -vf "fps=25,format=yuv420p" C:\test\out.mp4
[06:40:49 CET] <ttgg> C:\ffmpeg\imaages\.jpg: No such file or directory
[06:40:59 CET] <ttgg> C:\ffmpeg\imaages\*.jpg: No such file or directory
[06:41:03 CET] <ttgg> ?
[06:44:01 CET] <ttgg> All my images are named "test (#).jpg"
[06:44:34 CET] <ttgg> I can't get multiple image to single video conversion to occur, because it says it can't find those files, so I guess my question is, how would I assign an appropriate wildcard?
[07:29:36 CET] <c_14> have you tried setting -pattern_type glob ?
[07:29:48 CET] <c_14> though I'm not sure glob works on windows
[07:29:52 CET] <ttgg> it doesn't
[07:30:05 CET] <ttgg> This folder ONLY has .jpg images I want to use in it.
[07:30:14 CET] <ttgg> Is there a "everything in this folder" wildcard?
[07:30:40 CET] <c_14> if your images are named "test (#).jpg" can't you just use "test (%d).jpg" ?
[07:31:00 CET] <c_14> though that only works if the numbers are sequential
[07:32:12 CET] <ttgg> sweet, let me try that
[07:32:41 CET] <ttgg> Trophy to you sir
[07:32:49 CET] <ttgg> You have successfully helped a PEBKAC idiot.
[07:32:53 CET] <ttgg> <3
[07:33:29 CET] <ttgg> Although... It seems like not too many frames
[07:33:38 CET] <ttgg> I have 120 images in there, and it's definitely not using them all
[07:33:59 CET] <ttgg> "c:\ffmpeg\bin\ffmpeg.exe" -r 1/5 -start_number 0 -i "C:\ffmpeg\imaages\test (%d).jpg" -c:v libx264 -vf "fps=25,format=yuv420p" C:\test\out.mp4
[07:34:16 CET] <ttgg> that gave me the video, but only 1 frame, the mp4 file is 72KB
[07:34:34 CET] <ttgg> All of the images together are over 10MB
[07:34:57 CET] <ttgg> it definitely didn't use them all, unless mp4 is some kind of quantum compression algorithm from the future. ;p ;)
[07:35:08 CET] <ttgg> Going to have to check the wiseman score on that
[07:39:01 CET] <c_14> use -framerate instead of -r
[07:39:26 CET] <c_14> if you use -r it'll drop a bunch of frames
[07:41:27 CET] <ttgg> tried it and getting the same thing with framerate
[07:42:10 CET] <c_14> are there jumps in the frame numbers? i.e. 1, 2, 5, 6, 7 or something like that?
[08:38:51 CET] <ttgg> no gaps
[08:39:10 CET] <ttgg> test (1).jpg | test (2).jpg | test (3).jpg etc...
[08:39:13 CET] <ttgg> all the way to 120
[08:43:42 CET] <ttgg> there was a break
[08:43:44 CET] <ttgg> fixed it
[08:43:51 CET] <ttgg> it does all the images now, thanks a ton guy! :D
[09:29:55 CET] <ttgg> "c:\ffmpeg\bin\ffmpeg.exe" -framerate 1/1 -start_number 0 -i "C:\ffmpeg\imaages\test (%d).jpg" -c:v libx264 -vf "fps=40,format=yuv420p" C:\test\out.mp4
[09:30:11 CET] <ttgg> What can I edit here, to make the frames display fluidly? Right now it looks like a power point presentation
[09:59:14 CET] <ttgg> figured it out
[10:15:59 CET] <ariyasu> 1/1 is just 1 :p
[19:20:42 CET] <cousin_luigi> Greetings.
[19:21:47 CET] Action: cousin_luigi needs to transform a clip both by cropping away the black borders and also zooming in: is there a way to do so without having to reencode twice?
[19:23:00 CET] <relaxed> yes, use crop,scale filter chain
[19:44:06 CET] <Aerroon> would it be possible for me to detect a single color frame in a video? i'm trying to find if a video has a frame in it that's completely or almost completely green
[19:44:58 CET] <Aerroon> and by green i meant red, oops
[19:48:30 CET] <durandal_1707> see signalstats filer
[19:48:48 CET] <Aerroon> ty
[21:47:12 CET] <cousin_luigi> relaxed: thanks.
[00:00:00 CET] --- Fri Jan 11 2019