[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

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

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:

[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

[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

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_

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 inf

[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

[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

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 <jonba...@gmail.com>: 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_queu

[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

[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

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

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

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

Re: [FFmpeg-user] Color Channel Expression

2017-07-31 14:41 GMT+02:00 Paul B Mahol >: On 7/31/17, Jon bae > wrote: > 2017-07-31 14:00 GMT+02:00 Paul B Mahol >: > >> On 7/31/17, Jon

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

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

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

[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] 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?

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.

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] 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 filtercha

[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