[Ffmpeg-devel-irc] ffmpeg.log.20190726

[burek]

[00:12:39 CEST] <MomokoGC> [mpegts @ 0000000000660580] Could not find codec parameters for stream 0 (Video: hevc (HEVC / 0x43564548), none): unspecified size
[00:12:39 CEST] <MomokoGC> Consider increasing the value for the 'analyzeduration' and 'probesize' options
[00:12:49 CEST] <MomokoGC> how do i increase these values?
[00:13:15 CEST] <another> -analyzeduration 10M -probesize 10M
[00:13:24 CEST] <MomokoGC> ty
[00:36:53 CEST] <MomokoGC> another that worked but my output has no audio track
[00:37:18 CEST] <MomokoGC> i did "-c copy" but only video is present in output
[00:37:23 CEST] <MomokoGC> you got any ideas?
[02:27:23 CEST] <grkblood13> why is this failing to record the stream coming out of the specified input device? I'm using the azap program to fetch an OTA signal using an ATSC tuner card. https://pastebin.com/m7xgrnjy
[02:42:11 CEST] <another> move the -s option before the -i
[02:52:52 CEST] <grkblood13> Option video_size not found.
[02:54:45 CEST] <Beam_Inn> https://ffmpeg.org/ffmpeg.html
[02:54:56 CEST] <Beam_Inn> can someone tell me in the manual here where I can figure out how to just trim a video?
[02:56:17 CEST] <Beam_Inn> ffmpeg -i movie.mp4 -ss 00:00:03 -t 00:00:08 -async 1 cut.mp4 maybe
[02:56:26 CEST] <Beam_Inn> try it
[03:06:37 CEST] <nine_milli> blb
[04:17:00 CEST] Last message repeated 1 time(s).
[06:28:45 CEST] <brx_> Hi everyone. My command mixes an mp4 with an mp3 keeping the audio stream from the mp4 using 'amix' filter.
[06:29:26 CEST] <brx_> The command works fine on ubuntu but fails on ANdroid when using a different version of ffmpeg, here is my pastebin, it shows the 2 versions of ffmpeg that I am using and the error that I get on android when using the same command to mix the files
[06:29:28 CEST] <brx_> https://pastebin.com/muSjkQsq
[06:35:45 CEST] <tdr> disect the line and see what part fails.   start with ffmpeg -hide_banner -filters | grep amix
[06:39:10 CEST] <furq> that's not the error you'd get if amix was missing
[06:39:38 CEST] <furq> at a guess that's some kind of weird shell issue
[06:41:35 CEST] <brx_> i think amix is present, this is the output of tdr's command https://pastebin.com/523U5dY6
[06:41:55 CEST] <brx_> it only gave me 1 page of filters but i see amix in there
[06:42:08 CEST] <furq> yeah if the filter was missing it wouldn't put the labels in the error message
[06:42:15 CEST] <brx_> ok i see
[06:42:15 CEST] <furq> maybe try using doublequotes
[06:42:39 CEST] <brx_> you mean for this portion: '[0:a][1:a]amix[aout]'
[06:42:42 CEST] <furq> yeah
[06:42:45 CEST] <brx_> ok
[06:46:13 CEST] <brx_> ok i had to escape the double quotes with the \ operator, so my filter was like: -filter_complex \"[0:a][1:a]amix[aout]\"
[06:46:22 CEST] <brx_> and i got the error: [AVFilterGraph @ 0xf196f040] No such filter: '"'
[06:46:42 CEST] <furq> uhh
[06:46:51 CEST] <furq> i don't know what shell this is but it sounds really broken
[06:47:41 CEST] <furq> maybe try dropping the quotes entirely
[06:47:45 CEST] <brx_> ok
[06:48:30 CEST] <brx_> oooo its rendering a file, looking good...
[06:48:39 CEST] <brx_> i had to drop the single quotes from the next portion as well
[06:48:49 CEST] <brx_> i.e: -filter_complex [0:a][1:a]amix[aout] -map [aout]
[06:49:00 CEST] <brx_> checking the resultant file 1 sec
[06:49:57 CEST] <brx_> ok the resultant output file is good!
[06:50:11 CEST] <brx_> thanks
[07:23:37 CEST] <brx_> building on that previous command, I am trying to 'itsoffset' the mp4 file by a given value. The command runs but the output file doesnt offset the mp4 as I was expecting. Here is the command I am using: https://pastebin.com/
[07:37:07 CEST] <brx_> i just realized i was doing "-itsoffset -00:00:01", the second hyphen shouldnt be there. I removed the second hyphen and the output is the same. I dont get the offsetted mp4
[08:04:57 CEST] <brx_> sorry i posted an empty pastebin, here is the actual pastebin with my command to 'itsoffset' the mp4... https://pastebin.com/jBNpvKuY
[09:49:35 CEST] <Beam_Inn> see the issue i keep having with my command is that it basically always seems to give me an 8-second video from the start
[09:49:45 CEST] <Beam_Inn> what I'm trying to do is set a start and end time
[09:49:51 CEST] <Beam_Inn>  ffmpeg -i movie.mp4 -ss 00:00:03 -t 00:00:08 -async 1 cut.mp4
[09:51:12 CEST] <Beam_Inn> is there only a duration tag and no end-time tag?
[09:54:24 CEST] <Beam_Inn> ffmpeg -i test.mp4 -c copy -ss 00:09:23 -to 00:25:33 cut.mp4 this seems to work well
[11:05:58 CEST] <user_oreloznog> Beam_Inn: Worked fine for me ;)
[13:36:40 CEST] <nine_milli> blb
[14:50:36 CEST] <JEEB> TIL -channel_layout in ffmpeg.c
[14:51:02 CEST] <JEEB> seems to be more useful than -ac in the sense that you are specifying the exact channel layout
[14:51:16 CEST] <JEEB> (which then also defines the amount of channels)
[19:29:16 CEST] <grkblood13> why is this failing to record the stream coming out of the specified input device? I'm using the azap program to fetch an OTA signal using an ATSC tuner card. https://pastebin.com/qjSajw2f
[20:22:57 CEST] <nine_milli> blb
[22:02:00 CEST] Last message repeated 1 time(s).
[22:02:15 CEST] <another> can someone kick nine_milli please?
[22:04:42 CEST] <DHE> seconded
[22:05:22 CEST] <another> durandal_1707: ^^
[22:06:33 CEST] <durandal_1707> another: why?
[22:07:30 CEST] <another> spamming the same line every couple hours over many many days
[22:08:20 CEST] <DHE> suspiciously it matches a user's name, presumably to constantly highlight them
[22:29:47 CEST] <furq> he actually had a question about libvpx on the 10th
[22:30:34 CEST] <furq> and then since then he's just highlighted that guy 82 times
[22:45:30 CEST] <durandal_1707> furq: did that guy "helped" him somehow?
[22:45:40 CEST] <furq> not as far as i can see
[22:45:47 CEST] <furq> i guess in another channel maybe
[00:00:00 CEST] --- Sat Jul 27 2019