[Ffmpeg-devel-irc] ffmpeg.log.20200120

[burek]

[05:24:02 CET] <BeerLover> What does this error mean? https://0x0.st/zFGL.bin
[06:39:57 CET] <BeerLover> I am trying to convert mp3 into HLS segments and am getting this error: https://0x0.st/zFDq.txt
[06:40:34 CET] <BeerLover> Too long service or provider name. Could not write header for output file #0 (incorrect codec parameters ?): Cannot allocate memory
[06:43:08 CET] <furq> BeerLover: -metadata service_name=
[06:43:27 CET] <furq> otherwise it'll copy the title from the input, which breaks if it's >254 bytes
[06:43:45 CET] <BeerLover> furq: okay, so any string is okay?
[06:43:49 CET] <furq> yeah
[06:44:00 CET] <furq> leaving it blank should work as well but if not just any string
[06:45:00 CET] <BeerLover> blank doesn't work
[06:45:20 CET] <BeerLover> -metadata service_name=''
[06:47:59 CET] <BeerLover> furq: will this override title?
[07:41:20 CET] <void09> anyone here that can help me try to figure out why ffmpeg cuts a video with 1 frame difference given the same -to time , but different -ss time ?
[07:41:20 CET] <void09> 1 frame difference at the end, of course
[11:10:26 CET] <void09> hello
[12:13:05 CET] <pagios> hello community, i am looking for a book/resource to start learning about the basic of video/audio. Something that gives solid base about pixels, colors, codecs, containers etc for me to really understand how to use the framework parameters, do you recommend any? Thank you
[12:16:43 CET] <void09> pagios: https://github.com/leandromoreira/digital_video_introduction ?
[12:17:41 CET] <pagios> void09, thanks so much
[12:17:42 CET] <pink_mist> pagios: I've no idea about a book, but going through the ffmpeg wiki would be a great start https://trac.ffmpeg.org/
[14:56:54 CET] <LFSVeteran> little bit further...https://pastebin.com/1n0DYwqw
[14:56:59 CET] <LFSVeteran> fails with :
[14:57:00 CET] <LFSVeteran> [wav @ 0x4dc940] No streams to mux were specified
[14:57:00 CET] <LFSVeteran> Could not write output file header (error 'Invalid argument')
[17:56:22 CET] <cousin_luigi> Greetings.
[17:56:52 CET] <cousin_luigi> Can I change the aspect ratio of a video stream without reencoding it? I think I solved it once, but I can't remember how.
[17:59:09 CET] <furq> cousin_luigi: -c copy -aspect 16:9
[17:59:35 CET] <furq> assuming the container supports it and your player respects container-level aspect ratio metadata
[18:02:02 CET] <DHE> there might be faster tools that are container-specific, like mkv tools, that can do the change in place. ffmpeg will have to rebuild the file to do this.
[18:02:48 CET] <furq> there are bitstream filters that do it on the stream level as well
[18:02:52 CET] <furq> but that's codec-specific
[18:30:40 CET] <cousin_luigi> furq: Thanks, done.
[18:30:51 CET] <cousin_luigi> DHE: Uhm, mkv you say?
[18:31:03 CET] <cousin_luigi> DHE: Like mkvtoolnix?
[18:32:18 CET] <DHE> it's been a long time since I've used it...
[18:33:50 CET] <cousin_luigi> anyway the thing is done. bbl
[18:59:26 CET] <donmerendolo> Hello, I want to remove a fragment of a 12 hour long h264 video. I have tried splitting it into two parts and then concatenate them, but it doesn't let me split them (says Invalid NAL unit 0, skipping and error while decoding MB 4 2, bytestream -55). I don't want to re-encode them as that would mean losing quality, what can I do?
[19:02:32 CET] <donmerendolo> It would be better if I could remove the fragment directly, but I don't understand what i found in google
[19:05:49 CET] <nicolas17> how did you split it?
[19:06:50 CET] <donmerendolo> with ffmpeg -i illo.mp4 -ss 00:00:00 -t 07:45:45 parte1.mp4
[19:08:16 CET] <nicolas17> that's re-encoding
[19:08:23 CET] <donmerendolo> oh
[19:08:33 CET] <donmerendolo> how would i not re-encode?
[19:08:38 CET] <nicolas17> you need "-codec copy" to tell it not to
[19:10:02 CET] <donmerendolo> thank you
[19:11:21 CET] <donmerendolo> now it says frame=    0 fps=0.0 q=-1.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x on the second part
[19:11:26 CET] <donmerendolo> the first one is working
[22:59:36 CET] <BabySoda_> hello?
[23:35:01 CET] <SirNapkin1334> despite having been installed via apt-get, attempting to run `ffmpeg` gives: `-bash: /usr/local/bin/ffmpeg: No such file or directory`
[23:35:42 CET] <SirNapkin1334> does anyone know how to fix this?
[23:36:09 CET] <SirNapkin1334> hmm...running /usr/bin/ffmpeg works, but how do I make `ffmpeg` point to `/usr/bin/ffmpeg`
[23:36:52 CET] <SirNapkin1334> also, the ffmpeg in the apt-get repository is outdated, as apt-get reports it's the newest version - 3.4.6
[23:37:00 CET] <SirNapkin1334> how can I update ffmpeg?
[23:52:31 CET] <taliho> you could run in docker if you don't want to recompile
[23:52:40 CET] <taliho> https://hub.docker.com/r/jrottenberg/ffmpeg/
[00:00:00 CET] --- Tue Jan 21 2020