Re: [FFmpeg-user] "documented implicitly" [was: Re: Why is format=rgb24 required after maskedmerge?]

2020-08-21 Thread Alexander Strasser
On 2020-08-20 14:03 -0700, Jim DeLaHunt wrote: > On 2020-08-20 09:03, Alexander Strasser wrote: > > > I will bring up a point that has become clear to me. > > > > Good documentation in general and especially for software is > > incredibly hard to write and get right

Re: [FFmpeg-user] "documented implicitly" part 2 [was: Re: Problem while converting DNG sequnece to video file]

2020-08-21 Thread Alexander Strasser
On 2020-08-21 12:28 +0200, Nicolas George wrote: [...] > > They belong in an introduction chapter, with links from places where it > is relevant. If you do it that way, and the contents makes sense, it > will be accepted. I agree on this in principle. We use AVOptions implementation for interpret

Re: [FFmpeg-user] "documented implicitly" [was: Re: Why is format=rgb24 required after maskedmerge?]

2020-08-20 Thread Alexander Strasser
On 2020-08-19 22:14 -0400, Mark Filipak wrote: > On 08/19/2020 01:43 PM, Jim DeLaHunt wrote: > > On 2020-08-19 07:34, Paul B Mahol wrote: > > > You are deeply confused about our filters. > > > Any filter can change pixel formats to one that they accepts thus gbrp > > > is picked instead of packed r

Re: [FFmpeg-user] libx265 a lot slower

2020-08-20 Thread Alexander Strasser
On 2020-08-19 15:06 +0200, Moritz Barsnick wrote: > On Mon, Aug 17, 2020 at 22:53:12 +0200, Cecil Westerhof wrote: > > Maybe I am just dumb and I use the wrong questions, but when I > > searched I got a lot of hits that explained I needed tot switch > > because the space needed would be halved > >

Re: [FFmpeg-user] Compression is a lot smaller

2020-08-17 Thread Alexander Strasser
Hi Cecil! On 2020-08-15 16:25 +0200, Cecil Westerhof wrote: > Simon Roberts writes: > > > On Sat, Aug 15, 2020 at 5:01 AM Cecil Westerhof wrote: > > > >> Through scripts I use ffmpeg for cutting and compressing videos and > >> sometimes adding a watermark. Nothing fancy, but handy. > >> > >> In

Re: [FFmpeg-user] Putting in a picture half-way through the video

2020-08-17 Thread Alexander Strasser
On 2020-08-15 16:20 +0200, Cecil Westerhof wrote: > Simon Roberts writes: > > > On Sat, Aug 15, 2020 at 4:07 AM Cecil Westerhof wrote: > > > >> I have to publish the video's from our Zoom meetings. Something went > >> wrong. Halfway a recording the recording went from the speaker to the > >> over

Re: [FFmpeg-user] Last frame with wrong duration - video from images

2020-06-23 Thread Alexander Strasser
On 2020-06-22 21:55 +, Leonardo via ffmpeg-user wrote: > >> $ mplayer > >> MPlayer 1.3.0 (Debian), built with gcc-8 (C) 2000-2016 MPlayer Team>>That > >> is too old unfortunately :(>>The timing fix was implemented in SVN > >> revision 37936 and first>released in version 1.4.0 .>> I'd advise t

Re: [FFmpeg-user] Last frame with wrong duration - video from images

2020-06-22 Thread Alexander Strasser
w what it is, look it up please. Best regards, Alexander > and > $ vlc --version > VLC media player 3.0.11 Vetinari (revision 3.0.11-0-gdc0c5ced72) > > I'm running debian 10 > > > On Monday, June 22, 2020, 4:18:12 PM GMT-3, Alexander Strasser > wrote:

Re: [FFmpeg-user] Last frame with wrong duration - video from images

2020-06-22 Thread Alexander Strasser
Hi! On 2020-06-22 17:34 +, Leonardo via ffmpeg-user wrote: > I have two images named figur001.png and figur002.png that I want to make a > video of 10 seconds, each figure being displayed for 5 seconds. > > After command > > ffmpeg -framerate 1/5 -i figur%03d.png -c:v libx264 -pix_fmt yuv420p

Re: [FFmpeg-user] Is there a bulk mode for ffprobe

2020-01-19 Thread Alexander Strasser
Hi Mike! On 2020-01-17 08:59 -0800, Carl Zwanzig wrote: > On 1/17/2020 3:32 AM, Mike Martin wrote: > > Thats what I am doing atm (via perl open3) and I am only getting about 4.7 > > files per second. (30160 in 105 minutes) > > This is what I am passing > > "ffprobe", '-hide_banner', '-loglevel','0

Re: [FFmpeg-user] Change filters in runtime

2019-08-11 Thread Alexander Strasser
Hi, On 2019-08-07 15:07 -0300, Music Br wrote: > I need to change an overlay image on the video and resize the video while > running ffmpeg. It is possible? If so, how to proceed? while ffmpeg doesn't support changing the filter graph, the behaviour of some filters can be changed at runtime. If y

[FFmpeg-user] [CLT2017] FFmpeg at Chemnitzer Linux-Tage

2017-03-04 Thread Alexander Strasser
Hi! FFmpeg has been accepted for CLT 2017, a FOSS event in Chemnitz, Germany! This "Chemnitzer Linux Tage" will take place from 11th to 12th of March. You can find more details here: https://chemnitzer.linux-tage.de/2017/en/ Thus once again, we will man a booth, happily waiting for users and

[FFmpeg-user] [CLT2015] FFmpeg at Chemnitzer Linux-Tage

2015-03-01 Thread Alexander Strasser
We happily announce that FFmpeg will be represented at Chemnitzer Linux-Tage (CLT) in Chemnitz, Germany. The event will take place on 21st and 22nd of March. More information can be found here: https://chemnitzer.linux-tage.de/2015/en/ We demonstrate usage of FFmpeg, answer your question

Re: [FFmpeg-user] Image sequence naming convention

2014-12-09 Thread Alexander Strasser
Hi Andreas! On 2014-12-08 19:27 +0100, Andreas Weller wrote: > I did a bunch of camera shots with my raspberry pi camera. In my script > I use the following naming scheme for the files created: `date > --iso-8601=seconds`.jpg > > Now I would like to further process them with ffmpeg. > > What's t