Re: [FFmpeg-user] FFMPEG MXF Issue

On 16/09/15 07:12, Irfan Saleem wrote: > Hi, > > I am facing a issue while playing and converting a media taken from Ikegami > GFPack. Please find below FFPLAY and FFMPEG consoles: > > *FFPLAY: * > C:\Program Files\ffmpeg\ffmpeg-20150629\bin>ffplay.exe > "D:\data\irfans\Downloads >

Re: [FFmpeg-user] How to use ocr filter

>On 9/17/15, Moritz Barsnick <[hidden email]> wrote: >> On Thu, Sep 17, 2015 at 15:12:17 +, Paul B Mahol wrote: >>> On 9/17/15, nicolab <[hidden email]> wrote: >>> > When I using ocr filter, how to output ocr text file ? >> >>> drawgraph accepts only floats values. >>> >>> ffplay ~/img.png

Re: [FFmpeg-user] How to brighten part of a dark video?

On Fri, 18 Sep 2015 11:44:29 +0200, Moritz Barsnick wrote: >$ ffmpep -i vlcsnap_2015_09_18_11h21m29s599.png -filter_complex >"split=2[v1][v2]; [v1]crop=200:300:520:0,mpblablabla[brightpart]; >[v2]mpbablabla[darkpart]; [darkpart][brightpart]overlay=x=520:y=0[v]" -map >"[v]"

Re: [FFmpeg-user] ffmpeg is failing in linux

Am 17.09.2015 um 15:29 schrieb Sheroo Pratap: *Encoder (codec mp3) not found for output stream #0:0* as already said: complete command line and output missing however, change "mp3" to "libmp3lame" is likely the solution frankly, if you not specify a audiocodec ffmpeg would have done the

[FFmpeg-user] How to brighten part of a dark video?

Hello I need to work on a video where the speaker was badly lit but also had a very bright screen to show slide: http://s11.postimg.org/6kdnh7nwj/vlcsnap_2015_09_18_11h21m29s599.png I read about the "mp" filter here:

Re: [FFmpeg-user] ffmpeg is failing in linux

Hi , Are you working on android platform , I mean doing video processing form android with ffmpeg. On Fri, Sep 18, 2015 at 12:45 PM, Reindl Harald wrote: > > > Am 17.09.2015 um 15:29 schrieb Sheroo Pratap: > >> *Encoder (codec mp3) not found for output stream #0:0* >> >

Re: [FFmpeg-user] HEVC decoding of first frame

Hallo Christian, On Thu, Sep 17, 2015 at 10:48:16 +0200, Christian Herglotz wrote: > I've got a question regarding the decoding process for HEVC-coded > sequences. When timing the process I found that the decoding of the > first frame always takes twice as long as the decoding of all the other

Re: [FFmpeg-user] How to brighten part of a dark video?

On Fri, 18 Sep 2015 12:04:41 +0200, Moritz Barsnick wrote: >The mp filter possibly doesn't exist any more. That's why my working command no longer works :-/ >Google's first hit (for MY search term ;-)) was the page you mentioned. >The second and third hits have better

[FFmpeg-user] Hanging bat file and general encoding questions

Full disclosure, I am fairly unfamiliar with video codecs. I have 2 questions. I'm trying to make something of a poor man's security camera DVR. I've created a bat file, that basically loops infinitely and records chunks of time from an rtsp stream from an ip camera in 1 hour blocks (although

Re: [FFmpeg-user] Combine vf and filter_complex for the same video?

On Fri, Sep 18, 2015 at 17:52:16 +0200, Gilles wrote: > >simple to justify "-vf" instead of "-filter_complex". > > If you have an example, I'm interested. Yes, because filter combinations with only one input and one output apparently aren't complex. (I wasn't aware of that.) See below. > ffmpeg

Re: [FFmpeg-user] How to brighten part of a dark video?

On 9/18/15, Gilles wrote: > On Fri, 18 Sep 2015 10:36:50 +, Paul B Mahol > wrote: >>mp eq2 was replaced by eq. > > Good to know. > > If you use the following, the video is all white, though: > > ffmpeg -ss 00:05:00 -i input.mpeg -t 15 -c:v libx264 -vf

Re: [FFmpeg-user] How to brighten part of a dark video?

On Fri, 18 Sep 2015 11:36:25 +, Paul B Mahol wrote: >The order of args have changed comparing to mp=eq2. http://ffmpeg.org/ffmpeg-filters.html#eq It'd help if the doco provided an example. Here's one: http://superuser.com/questions/928151/ffmpeg-eq-filter-complex-contrast

Re: [FFmpeg-user] How to brighten part of a dark video?

Dana 18. 9. 2015. 12:07 osoba "Gilles" napisala je: > > On Fri, 18 Sep 2015 12:04:41 +0200, Moritz Barsnick > wrote: > >The mp filter possibly doesn't exist any more. > > That's why my working command no longer works :-/ > > >Google's first hit (for MY

Re: [FFmpeg-user] How to brighten part of a dark video?

On Fri, 18 Sep 2015 11:25:35 +0200, Gilles wrote: >I need to work on a video where the speaker was badly lit but also had >a very bright screen to show slide: For the benefit of other newbies happening on this thread later, here's a working exemple to 1) split the video in

Re: [FFmpeg-user] How to brighten part of a dark video?

On Fri, 18 Sep 2015 14:25:27 +0200, Moritz Barsnick wrote: >Small hint: You probably want the same x, y coordinates for the overlay >as you used for the crop, so as to place the corrected part at exactly >the same place. ;-) Indeed, thanks for point it out. Out of curiosity,

Re: [FFmpeg-user] How to brighten part of a dark video?

On Fri, 18 Sep 2015 10:36:50 +, Paul B Mahol wrote: >mp eq2 was replaced by eq. Good to know. If you use the following, the video is all white, though: ffmpeg -ss 00:05:00 -i input.mpeg -t 15 -c:v libx264 -vf eq=1:1.68:0.3:1.25:1:0.96:1 -c:a copy -f mp4 output.mp4

Re: [FFmpeg-user] How to brighten part of a dark video?

On Fri, Sep 18, 2015 at 14:21:26 +0200, Gilles wrote: > For the benefit of other newbies happening on this thread later, > here's a working exemple to 1) split the video in two parts, 2) make > the dark part brighter and the bright part darker, and 3) join the two > into a single video: Thanks

Re: [FFmpeg-user] Best settings for FFV1

On 17/09/15 23:45, Dave Rice wrote: > Hi, > >> On Sep 14, 2015, at 11:56 PM, Etienne Desautels >> wrote: >> >> Hi, >> >> I will start using FFV1 to archive video for a museum and I will like to >> know what's the best settings to get smaller files. I will use

Re: [FFmpeg-user] How to brighten part of a dark video?

On Fri, Sep 18, 2015 at 11:25:35 +0200, Gilles wrote: > Can ffmpeg brighten up only the dark part of the video without > increasing the brightness of the screen that's already too bright? Sure. You can use a complex filter to crop one section out, apply different brightness changes to the

Re: [FFmpeg-user] How to brighten part of a dark video?

On Fri, Sep 18, 2015 at 12:00:31 +0200, Gilles wrote: > Thanks much. > What kind of infos should I use for the "mpblablabla" part? > I tried to read the official doco, but it has no examples for newbies: > https://ffmpeg.org/ffmpeg-filters.html The mp filter possibly doesn't exist any more.

[FFmpeg-user] Combine vf and filter_complex for the same video?

Hello Besides cropping part of the screen, I also need to resize the whole screen, but vf and filter_complex are mutually exclusive: === ffmpeg -i input.mp4 -c:v libx264 -vf scale=640:-1 -pix_fmt yuv420p -filter_complex "magic here" -c:a copy -f mp4 output.mp4 ===

Re: [FFmpeg-user] Combine vf and filter_complex for the same video?

On 9/18/15, Gilles wrote: > Hello > > Besides cropping part of the screen, I also need to resize the whole > screen, but vf and filter_complex are mutually exclusive: > > === > ffmpeg -i input.mp4 -c:v libx264 -vf scale=640:-1 -pix_fmt yuv420p > -filter_complex

Re: [FFmpeg-user] Combine vf and filter_complex for the same video?

On Fri, Sep 18, 2015 at 15:18:49 +0200, Gilles wrote: > To avoid two encodings in a row, is it possible to use filter_commplex > to also resize a video? Sure. In fact, "-vf" ("-af") are simplifications of a complex filter restricted to a single chain. What's more, what we (I) suggested to you

Re: [FFmpeg-user] Hanging bat file and general encoding questions

On Fri, Sep 18, 2015 at 13:59:52 -0400, dreeder quasareg.com wrote: > C:\...\ffmpeg\bin\ffmpeg -i rtsp://172.16.1.183:554/video.pro2 -b:v 128k > -vcodec > copy -r 30 -t 3600 -y "C:\...\TestRecord\Recording.avi" > > As I have been lead to understand, this doesn't actually reencode, it just >

Re: [FFmpeg-user] Combine vf and filter_complex for the same video?

On Fri, 18 Sep 2015 15:36:04 +0200, Moritz Barsnick wrote: >What's more, what we (I) suggested to you may have been sufficiently >simple to justify "-vf" instead of "-filter_complex". If you have an example, I'm interested. >Anyway, in the chain where you have the combined