Re: [FFmpeg-user] hls playlist got wiped out when ffmpeg runs as systemd child process

Am 08.07.22 um 22:30 schrieb Reindl Harald: Am 08.07.22 um 18:16 schrieb Greg Oliver: On Fri, Jul 8, 2022 at 5:25 AM jb wrote: Hello everybody, I have a control program which running as a systemd service. This program spawns ffmpeg and that is writing to a HLS playlist. I use this flags:

Re: [FFmpeg-user] hls playlist got wiped out when ffmpeg runs as systemd child process

Am 10.07.22 um 19:12 schrieb Jonathan Baecker: Am 08.07.22 um 22:30 schrieb Reindl Harald: Am 08.07.22 um 18:16 schrieb Greg Oliver: On Fri, Jul 8, 2022 at 5:25 AM jb wrote: Hello everybody, I have a control program which running as a systemd service. This program spawns ffmpeg and that

[FFmpeg-user] overlay image on a video with less then a frame duration - bug?

Hello everybody, I notice a strange behavior and I wanted to ask if this is a bug, or a technical limitation. Lets say you have a clip, which is 300 seconds long, and you seek in with -ss 299.999 and then you overlay a image with shortest=1, ffmpeg will run endless without encoding anything.

[FFmpeg-user] linear loudnorm

Hello! I'm trying to nomalize an audio file with FFmpeg. I'm using the loudnorm filter. The source loudness is -23 LUFS and I want to make it -17 LUFS. As far as I know, loudnorm has 2 modes of normalizing audio: linear and dynamic (analysing small parts vs. analysing the whole file). The pr

Re: [FFmpeg-user] 2 pass CBR or VBR not really fixing the bitrate?

Am 31.07.2017 um 03:52 schrieb Manuel Tiglio: Hi there, I apologize for my delay in replying, I found that the mailing list messages were being sent to my junk folder :-( On Jul 29, 2017, at 1:51 PM, Moritz Barsnick wrote: On Sat, Jul 29, 2017 at 13:16:07 -0700, Manuel Tiglio wrote: ffmpeg

Re: [FFmpeg-user] Color Channel Expression

2017-07-31 14:41 GMT+02:00 Paul B Mahol >: On 7/31/17, Jon bae mailto:jonba...@gmail.com>> wrote: > 2017-07-31 14:00 GMT+02:00 Paul B Mahol mailto:one...@gmail.com>>: > >> On 7/31/17, Jon bae mailto:jonba...@gmail.com>> wrote: >> > 2017-07-31 10:3

Re: [FFmpeg-user] 2 pass CBR or VBR not really fixing the bitrate?

Am 31.07.2017 um 20:52 schrieb Manuel Tiglio: Hi Jonathan, This helps Hi, how about this command?: ffmpeg -i input.mp4 -c:v libx264 -x264-params "nal-hrd=cbr" -b:v 1M -minrate 1M -maxrate 1M -bufsize 2M Source: https://trac.ffmpeg.org/wiki/Encode/H.264 Will give it a try. I had seen in ot

Re: [FFmpeg-user] ERROR: libgsm not found when compiling ffmpeg 3.3.3 on OSX

Am 16.08.2017 um 17:14 schrieb Haifeng Li: Hi, I’m trying to compile FFmpeg(n3.3.3) in OSX, with default config from https://evermeet.cx/ffmpeg/ , i.e.: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-g

Re: [FFmpeg-user] Generating a difference map

Am 16.08.2017 um 17:58 schrieb Evert Vorster: Hi there. I have a video stream that has been generated via Hugin and some fancy scripting. I also have a video stream, using the same input and remapped with ffmpeg remap filter. The problem that I am having is that there are some color differences

[FFmpeg-user] Pipe while loop output

Hello everybody, I play at the moment a bit with piping multiple files to the same ffmpeg instance. In shell it would look like: for i in "$list_of_multiple_files"; do ffmpeg -i "$i" [...] -f mpegts -; done | pv -q -B 50M | ffmpeg +igndts -i pipe:0 -fflags +genpts [...] -f flv rtmp://

[FFmpeg-user] Thread message queue blocking: when pipe and use filter complex

Hello, when I use pipe to ffmpeg in combination with *filter_complex overlay, *I always get the message: Thread message queue blocking; consider raising the thread_queue_size option (current value: 256) It doesn't matter how big I raise the thread_queue_size, the message comes son or l

Re: [FFmpeg-user] Thread message queue blocking: when pipe and use filter complex

Am 19.02.2018 um 02:56 schrieb Carl Eugen Hoyos: 2018-02-18 22:56 GMT+01:00 Jonathan Baecker : when I use pipe to ffmpeg in combination with *filter_complex overlay, *I always get the message: Thread message queue blocking; consider raising the thread_queue_size option (current value

[FFmpeg-user] itsoffset vs. setpts=PTS+10/TB

Hello everybody, can somebody tell me, that the input parameter "-itsoffset" is technical equal to the filter setpts=PTS+seconds/TB? And when not, is there a filter with that I can add an offset to the input. The background is, that I use a split filter: [in]split[out1][out2] and I wan

Re: [FFmpeg-user] itsoffset vs. setpts=PTS+10/TB

Am 17.06.2016 um 11:45 schrieb Carl Eugen Hoyos: Jonathan Baecker gmail.com> writes: can somebody tell me, that the input parameter "-itsoffset" is technical equal to the filter setpts=PTS+seconds/TB? They are technically completely different. If you are using a filterchain,

Re: [FFmpeg-user] itsoffset vs. setpts=PTS+10/TB

Am 17.06.2016 um 12:19 schrieb Carl Eugen Hoyos: Jonathan Baecker gmail.com> writes: so setpts works in general more safer? I would say it is more predictable than itsoffset. I have test this with some image sequences and got some warning (Buffer queue overflow, dropping.) This

Re: [FFmpeg-user] Using video from an Android - concat with intro/outtro

Am 22.08.2016 um 22:02 schrieb Steven Burns: I have a project where I am receiving video uploaded from an Android phone, and processing the video with a scripted stock intro/outtro/overlays. The issue is during the concat process the android portion of the video is not playing correctly. Chop

Re: [FFmpeg-user] Mac version of ffmpeg that supports https

Am 07.11.2016 um 18:49 schrieb fc: Is there a Mac version downloadable ffmpeg binary built with https support? I have been trying to find such a binary but all the ones I found are without https support. Everyone on Mac using ffmpeg without ssl support? Is installing over Homebrew a option? ht

Re: [FFmpeg-user] Single Audio stream to multiple FFmpeg process?

Am 08.11.2016 um 21:36 schrieb Roger Pack: I think two devices can record from the same mic can't they? (but not video, though maybe that's possible now in windows 10 dunno otherwise you could split it in show or like you were saying with pipes "maybe" LOL) http://betterlogic.com/roger/2013/05/di

[FFmpeg-user] write time and date to error message

Hello Everybody, I have a Livestream here, what produce sometimes errors and warning from udp input: [mpeg2video @ 0x2a321e0] concealing 1215 DC, 1215 AC, 1215 MV errors in B frame [mpegts @ 0x2a28680] PES packet size mismatch [mp2 @ 0x2a31680] Header missing Error while decoding stream #0:1:

Re: [FFmpeg-user] write time and date to error message

Calling the program "date" on every line of output is likely to be too slow. You need a wrapper in a language which has its own gettimeofday(). I'm sure such wrappers already exist (I have even written my own in Perl actually). Check this: http://stackoverflow.com/q/21564/3974309 Thanks for your

Re: [FFmpeg-user] Sony FS7 AVC long group rewrap trouble

Am 13.11.2016 um 11:49 schrieb Bouke (VideoToolShed): Hi guys, Got trouble rewrapping Sony MXF clips to something else. (Main goal is to change TC / alter sound a bit) If I go to Mov, the result is a green image in both Avid and Premiere. (Tried -vtag avc1 / aivx, but that seems to do nothing...)

[FFmpeg-user] apad in pipe

Hello Everybody, I have here clips with different length (more the 20 seconds) of audio and video line. For this clips I need to use apad filter. But when I want to pipe the result, the pipe breaks exactly on that point when the apad filter should add silence. When I encode the clip with ap

[FFmpeg-user] ffprobe aspect ration

Hello, I figure out that ffprobe not always show the "display_aspect_ratio", but mediainfo does. Is there any technical reason for that? Or is there another way to get this info, instead of using "-show_streams". I could calculate the aspect from resolution but how could I be sure that the pi

Re: [FFmpeg-user] ffprobe aspect ration

Am 31.08.2019 um 22:06 schrieb Carl Eugen Hoyos: Am Sa., 31. Aug. 2019 um 21:49 Uhr schrieb Jonathan Baecker : I figure out that ffprobe not always show the "display_aspect_ratio", but mediainfo does. Is there any technical reason for that? Or is there another way to get this info,

Re: [FFmpeg-user] ffprobe aspect ration

Am 01.09.2019 um 00:53 schrieb Carl Eugen Hoyos: Am Sa., 31. Aug. 2019 um 22:26 Uhr schrieb Jonathan Baecker: Am 31.08.2019 um 22:06 schrieb Carl Eugen Hoyos: Am Sa., 31. Aug. 2019 um 21:49 Uhr schrieb Jonathan Baecker : I figure out that ffprobe not always show the "display_aspect_

[FFmpeg-user] loudnorm and experimental audio codecs

Hello, I tried to use the loudnorm filter with experimental audio codec - I need mostly s302m - but I had some issues. I make a report here to: https://trac.ffmpeg.org/ticket/8131 But because it is an experimental codec, I think the priority is very low to fix here something. The problem i

[FFmpeg-user] webvtt HLS discontinuity mismatch

Hello everybody, I would like to use this hls_flags "append_list+delete_segments+omit_endlist", but when I use them in combination with webvtt subtitle, it generate different playlists entries. In stream.m3u8 I get a "#EXT-X-DISCONTINUITY" flag before the first segment, but im stream_vtt.m3u

[FFmpeg-user] Generic way to deal with different pixel formats in a HW context

Hi, I want to run this command: ffmpeg -hwaccel_device 0 -hwaccel cuda -hwaccel_output_format cuda -i input.mp4 -vf scale_cuda=-1:-1 -c:v h264_nvenc -f null - If my input file has a pixel format of yuv420p then the command works fine, but if the file has gbrp the conversion fails: ffmpeg v

[FFmpeg-user] multiple readrate

Hi, does anyone know if it makes sense to use the -readrate option for each input file or is it enough to use it only once. For example, if I have a video and a webvtt file:  ffmpeg -readrate 1 -i video.mp4 -readrate 1 -i subtitle.vtt ... For a single file I don't see any difference, but

Re: [FFmpeg-user] multiple readrate

Am 19.03.25 um 12:27 schrieb Gyan Doshi: On 2025-03-19 04:43 pm, Jonathan Baecker wrote: Hi, does anyone know if it makes sense to use the -readrate option for each input file or is it enough to use it only once. You should set it for all inputs supplying streams to the same output. If