[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

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];\

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

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

Nicolas George george at 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 -ss 1 out1.avi

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 right. I

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

Using -ss seconds 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

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-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