[FFmpeg-user] How to use qp option codecview filter?

When to use qp option codecview filter Nothing happens. Only preview normal. How to use qp option codecview filter? https://ffmpeg.org/ffmpeg-filters.html#codecview ffplay -flags2 +export_mvs https://download.blender.org/durian/trailer/sintel_trailer-480p.mp4 -vf codecview=qp=1 ffplay version N-7

Re: [FFmpeg-user] Why histogram filter mode levels cannot use h|vstack filter inputed rgb(a) source?

>Hi, > >On Thu, Oct 01, 2015 at 05:42:41 -0700, nicolab wrote: >> I am using histogram <https://ffmpeg.org/ffmpeg-filters.html#histogram> >> filter mode levels is error but color, color2 and waveform mode is OK. > >The mandelbrot source seems to output RGBA, but

[FFmpeg-user] Why histogram filter mode levels cannot use h|vstack filter inputed rgb(a) source?

I am using histogram filter mode levels is error but color, color2 and waveform mode is OK. ffmpeg-20150928-git-1d0487f-win64-static\bin>ffplay -f lavfi -i mandelbrot -vf split[1][2];\ [1]histogram=mode=levels[1a];[2]histogram=mode=levels[2a];[

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 ? >> >>> drawg

[FFmpeg-user] How to use ocr filter

When I using ocr filter, how to output ocr text file ? https://ffmpeg.org/ffmpeg-filters.html#ocr img.png ffmpeg -f lavfi -i "movie=img.png,ocr=datapath=tessdata:language=eng,drawgraph=lavfi.ocr.text" out.png -y -loglevel 99 ffmpe

Re: [FFmpeg-user] Apply format with overlay and -ss in front of inputfile is strange?

>Nicolas George nsup.org> writes: > >> Le quintidi 25 messidor, an CCXXIII, Carl Eugen Hoyos a écrit : >> > I can confirm that there may be an issue >> > but it is not overlay-related: >> > $ ffmpeg -i input -vf >> > "split[x][z];[x]format=gray[x1];[x1]nullsink" >> > -strict -2 -vcodec jpeg2000 -s

Re: [FFmpeg-user] Apply format with overlay and -ss in front of inputfile is strange?

Sorry my poor english. > The "format" of the output of the overlay filter > is yuva420p. This is not supported by x264, so > the output "format" file-wise is yuv420p. > The output is visually gray because you > overlayed a gray frame (x1) over another > frame (of the same size). Yes. This is rig

[FFmpeg-user] Apply format with overlay and -ss in front of inputfile is strange?

Using -ss in fornt of inputfile, apply format filter and overlay output is strange? Creat rgbtestsrc video. ffmpeg -f lavfi -i rgbtestsrc=d=10 -vcodec utvideo rgbtestsrc.avi Overlay z output file is not change format before -ss input file. This is OK. ffmpeg -i rgbtestsrc.avi -ss 1 -vf split[x][

Re: [FFmpeg-user] Setting color is strange showvolume filter

> It is in aabbggrr format because its calculated from expression Thanks! - https://twitter.com/nico_lab http://nico-lab.net/ -- View this message in context: http://ffmpeg-users.933282.n4.nabble.com/Setting-color-is-strange-showvolume-filter-tp4671282p4671294.html Sent from the FFmpeg-use

[FFmpeg-user] Setting color is strange showvolume filter

Setting color RGB(0xff), Green is fine, but Red, Blue is reversed? example ffplay -f lavfi aevalsrc="sin(440*2*PI*t):s=8000,showvolume=c=0x00ff00" color is 0x00ff00 ffplay -f lavfi aevalsrc="sin(440*2*PI*t):s=8000,showvolume=c=0xff" color is 0xff, not 0xff ffplay version N-73361-