Re: [FFmpeg-user] Audio Normalization with ffmpeg

On 2/23/16, master yoda wrote: > I actually use volumedetect first to determine the peak level of an audio > stream and set the correct value with -filter_complex volume=x,y dB in my > video transcoding script to normalize the audio level. I've seen in the

Re: [FFmpeg-user] How can I get byte-accurate segments?

On 2/12/16, Moritz Barsnick wrote: > On Thu, Feb 11, 2016 at 17:19:47 -0700, Grant Curtis wrote: >> I'm working with a Speech-to-text service that wants audio files that are >> exactly 160kb large, which means 80,000 16-bit samples > > Which makes this uncompressed "raw audio",

Re: [FFmpeg-user] alternating two images

On 2/11/16, Michael Koch wrote: > Hello all, > > let's assume I have two images and want to see them alternating with > framerate 1. > image1, image2, image1, image2 and so on, and stop after 60 seconds. > I could make 60 copies of the images and rename them with

Re: [FFmpeg-user] field order detection - numbering framepositions possible?

On 2/9/16, Christoph Gerstbauer wrote: > Hello Moritz, > > I dont want to extract the Metadata from each frame. > I want to analyse the video itself, not its metadata. > In some cases the metadata will not fit to the essence picture. > And for these cases I want to

Re: [FFmpeg-user] No duration with pipe:1 as output

On 2/8/16, Robert Nagy wrote: > When I set "pipe:1" as the output the resulting file always ends up without > a duration in it's metadata/header (ffprobe doesn't find it). > > I'm primarily interested in outputting webm, but I have the same issues > with nut and mkv. > > Is

Re: [FFmpeg-user] zoompan: video is jerking around

On 2/7/16, Michael Koch wrote: > Hi all, > > I have a problem with the zoompan filter. The video is jerking around. > This is especially visible when the zoom factor is quite high, as in the > below example, where it varies over 100 frames from 5.0 to 5*1.005^99=8.19

Re: [FFmpeg-user] clipping samples to broadcast range in an mpeg2video output

On 2/5/16, Dave Rice wrote: > Hi all, > I am having trouble creating an mpeg2video output that conforms to 16-235 > broadcast range. I'd like to find a way to have an input which is yuv420p > but has luma values out of broadcast range but clip to broadcast range while > encoding

Re: [FFmpeg-user] FFplay questions

On 2/5/16, Christoph Gerstbauer wrote: > Hi > > 1.) The positioning with ffplay via the Videpicture clicking works very > fast. > I click into the picture and immediately I get to the percentual > position (100 percent= width of the video window) of the video. > >

Re: [FFmpeg-user] deep zoom-in

On 2/4/16, Michael Koch wrote: > Hi all, > > I'd like to make a deep zoom-in from several images. For example, begin > with image1 (which was taken with a 50mm objective) and use the zoompan > filter to make a 5 seconds zoom-in from 1x to 4x, then use image2 (taken >

Re: [FFmpeg-user] top posting issue

On 2/4/16, juan carlos Rebate wrote: > if you think it's a waste of time does not respond, the sociedd > progresses, the services must engage the advance, the service is so > and we must tolerate, no one should tell anyone how they should do > things. You are being rude,

Re: [FFmpeg-user] zimg colorspace yuv -> rgb possible?

On 1/27/16, Andy Furniss wrote: > Carl Eugen Hoyos wrote: >> Andy Furniss gmail.com> writes: >> >>> mplayer -ss 11.2 -frames 3 -demuxer lavf -noaspect >>> -vf ilpack,scale -vo png ~/snooker-short.ts >> >> First convert the input file losslessly to something >> I-frame only

Re: [FFmpeg-user] zimg colorspace yuv -> rgb possible?

On 1/27/16, Andy Furniss <adf.li...@gmail.com> wrote: > Paul B Mahol wrote: >> On 1/27/16, Andy Furniss <adf.li...@gmail.com> wrote: > >>> I notice in the web help - >>> >>> https://www.ffmpeg.org/ffmpeg-filters.html#toc-zscale >>> >

Re: [FFmpeg-user] ffmpeg for creting video from images

On 1/27/16, pra...@devrepublic.nl wrote: > > > Hi, > > I am facing problem creating video from images with audio and duration > of 5 seconds each frame. > > First/Last image skipped and not staying for 5 seconds. > > Can you please let me know how you can help me and what

Re: [FFmpeg-user] zimg colorspace yuv -> rgb possible?

On 1/27/16, Andy Furniss <adf.li...@gmail.com> wrote: > Paul B Mahol wrote: >> On 1/26/16, Andy Furniss <adf.li...@gmail.com> wrote: >>> Andy Furniss wrote: >>> Here's the assert - after seeing swscale in the first test I tried >>> format=rgb2

Re: [FFmpeg-user] ffmpeg for creting video from images

On 1/27/16, Carl Eugen Hoyos wrote: > devrepublic.nl> writes: > >> ffmpeg version 2.2.1 Copyright (c) 2000-2014 the FFmpeg developers > > This is old, please test current FFmpeg git head. > (I believe this issue was fixed some time ago.) > No, it is not. Try for yourself. >

Re: [FFmpeg-user] how to combine resampler? dither and resampl

On 1/26/16, G Alexander wrote: > posting a log is not beneficial, you should be able to abstract the keys and > associations without even seeing an output. > > eventually it turns out that the documentation is absolutely terrible. > you're better off reading the header

Re: [FFmpeg-user] how to combine resampler? dither and resampl

On 1/26/16, Moritz Barsnick wrote: > G Alexander, are you "G A"? Why do you change your name? Why does > hotmail not properly reply to mails? (Why do you top-post?) > > On Tue, Jan 26, 2016 at 00:33:34 -0800, G Alexander wrote: > >> posting a log is not beneficial, you should be

Re: [FFmpeg-user] zimg colorspace yuv -> rgb possible?

On 1/26/16, Andy Furniss wrote: > Moritz Barsnick wrote: >> On Tue, Jan 26, 2016 at 15:43:45 +, Andy Furniss wrote: >>> Is it possible via ffmpeg with libzimg to convert yuv -> rgb or is >>> zscale just for scaling and the Colorspace bits not >>> implemented/need some

Re: [FFmpeg-user] How to pan hozitonally on a video?

On 1/26/16, Sub Phil wrote: > RE:https://www.ffmpeg.org/ffmpeg-filters.html#zoompan > > Hi, > > I have a 30 sec video in 1920x1080@25fps > > I want to pan/crop with a constant rectangle of 1200x980 > > It rectangle starts at position (0,0) till t=10 sec > than from t=10 sec

Re: [FFmpeg-user] zimg colorspace yuv -> rgb possible?

On 1/26/16, Andy Furniss <adf.li...@gmail.com> wrote: > Paul B Mahol wrote: >> On 1/26/16, Andy Furniss <adf.li...@gmail.com> wrote: > >>> Maybe there is some way - or maybe not, I thought I would ask >>> before doing my usual ffmpeg game of trying m

Re: [FFmpeg-user] zimg colorspace yuv -> rgb possible?

On 1/26/16, Andy Furniss wrote: > Andy Furniss wrote: > Here's the assert - after seeing swscale in the first test I tried > format=rgb24 ... use copy filter before zscale filter. Anyway using y4m is wrong as it doesnt have frame metadata as primaries,matrix coefficients

Re: [FFmpeg-user] Video filtering for chroma dot crawl and rainbow effect

On 1/25/16, Christian Johannesen wrote: > On Sun, Jan 24, 2016 at 8:23 PM, Carl Eugen Hoyos wrote: > >> Christian Johannesen gmail.com> writes: >> >> > Looked through all the documentation for FFMPEG and I can't >> > seem to find any video filters

Re: [FFmpeg-user] Error Prediction between 2 images

On 1/24/16, Abderrahmane Ouadrhiri <aouadrh...@gmail.com> wrote: > I want to draw this histogram > [image: Images integrees 1] I still do not understand. > > 2016-01-24 13:04 GMT+01:00 Paul B Mahol <one...@gmail.com>: > >> On 1/24/16, Abderrahmane Ouadrhiri <

Re: [FFmpeg-user] Error Prediction between 2 images

On 1/24/16, Abderrahmane Ouadrhiri wrote: > Hi all, > > How I can extract the image that represent error prediction between 2 > images (image 1 and image 2) What exactly you mean by error prediction? > > thank you. > ___ >

Re: [FFmpeg-user] Video filtering for chroma dot crawl and rainbow effect

On 1/22/16, Christian Johannesen wrote: > Looked through all the documentation for FFMPEG and I can't seem to find > any video filters that deal with chroma dot crawl & rainbow artifacts in > files captured from analog tape formats. I have a feeling that I am going > to

Re: [FFmpeg-user] cropdetect (Was: ffmpeg convert to wrong duration using dvd2concat)

On 1/20/16, Moritz Barsnick wrote: > Regarding cropdetect: > > On Wed, Jan 20, 2016 at 11:31:50 -0500, Etienne Desautels wrote: >> [Parsed_cropdetect_1 @ 0x40b8900] x1:719 x2:0 y1:479 y2:0 w:-718 h:-478 >> x:720 y:480 pts:6006 t:0.066733 crop=-718:-478:720:480 > > I have noticed

Re: [FFmpeg-user] Replacing First 90 Seconds of a Video with Silence or with Another Audio Clip

On 1/17/16, Sam Logan wrote: > I have a video AVI file, "Video.avi", consisting of a video and an audio > track, and a separate audio file, "Audio.mp3". I want to do the following > two things: > > (1) > > First, I want to produce a version of the video,

Re: [FFmpeg-user] flame about confusing command line options.

On 1/5/16, Reindl Harald wrote: > > > Am 05.01.2016 um 16:21 schrieb Michael Koch: For example, Harald Reindl just wrote: "and when you specify something twice the right one wins" Is this already in the FFmpeg documentation? >>> >>> that's common sense

Re: [FFmpeg-user] Real-time HAP encoded streaming

On 1/4/16, Kenneth Fields wrote: > Hi, > in general documentation, > Supported External Libraries, Formats, Codecs or Features > = > I see Vidvox HAP under 2.1 file formats and not under video codecs. > Can real-time HAP encoded network

Re: [FFmpeg-user] a -vf for broadcast safe

On 12/30/15, Dave Rice wrote: > >> On Feb 12, 2014, at 4:43 AM, Carl Eugen Hoyos wrote: >> >> Jim Shupert pps-inc.com> writes: >> >>> input a unCompressed yuv avi and get a second >>> Uncompressed yuv avi or mov and it would be >>> 'broadcast safe'. >> >>

Re: [FFmpeg-user] a -vf for broadcast safe

On 12/30/15, Carl Eugen Hoyos wrote: > Dave Rice dericed.com> writes: > >> The input file appears to be in broadcast range >> (yuv422p or yuv444p) but contains values that are >> not in broadcast range. > > I don't understand this sentence. > Are you aware that - afaik and I am

Re: [FFmpeg-user] issue with trim & pan filters

On 12/30/15, Christian Johannesen wrote: > I ran into an issue with ffmpeg tonight where I could not trim a source > because of the audio channel configuration of the track I was pulling audio > from. The source has a track of 12 channels of audio. I can process the >

Re: [FFmpeg-user] How to deinterlace with simple blend or add

On 12/25/15, MI wrote: > I have a video which was orginally shot progressive, then encoded as > interlaced. How > can I most efficiently get back to the original progressive frames? > > For real deinterlacing, I usually use -vf "yadif=0:-1:0". That works very > well with

Re: [FFmpeg-user] mosaic video 2x2, 3x3 etc

On 12/8/15, Schui1024 wrote: > Hi there all > > > > So I'm a newbie when it comes to ffmpeg, though I've got a script doing > various things. > > > > Video feed comes in with 10 second clips from multiple cameras. > > (ie 4 cameras, 6 x 10 second clips for each camera)

Re: [FFmpeg-user] Help with complex filter chain?

On 11/26/15, Mike Grommet wrote: > Hi group, here is what I'm trying to do: > > I have one background, and two videos > - I'd like to scale each video down to 320x240 > - hstack them next to each other > - overlay them over a background image > - Merge the audio from

Re: [FFmpeg-user] Combining .webm side by side - frame size changes

On 11/24/15, Moritz Barsnick wrote: > Hi Mike, > > On Mon, Nov 23, 2015 at 22:56:08 -0600, Mike Grommet wrote: > >> During the playback of the combined file, The right side video appears >> to zoom in to the top left of itself two times. The originals appear >> fine when played

Re: [FFmpeg-user] Combining .webm side by side - frame size changes

> For audio use amerge or amix. > > > On 11/24/2015 9:15 AM, Moritz Barsnick wrote: >> >> On Tue, Nov 24, 2015 at 15:20:03 +0100, Paul B Mahol wrote: >>>> >>>> Something like >>>> $ ./ffmpeg -i a.webm -i b.webm -filter_complex "[0:v

Re: [FFmpeg-user] ffmpeg amerge and amix filter delay

On 11/2/15, Paul B Mahol <one...@gmail.com> wrote: > Dana 2. 11. 2015. 20:26 osoba "Leo GSA" <leo...@gmail.com> napisala je: >> >> ffmpeg amerge and amix filter delay >> >> I need to take audio-streams from several IP cameras and merg

Re: [FFmpeg-user] ffmpeg amerge and amix filter delay

Dana 2. 11. 2015. 20:26 osoba "Leo GSA" napisala je: > > ffmpeg amerge and amix filter delay > > I need to take audio-streams from several IP cameras and merge them into > one file, so that they would sound simaltaneousely. > > I tried filter "amix": (for testing purposes I take

Re: [FFmpeg-user] Converting a 23.98p source to 29.97i ProRes w/interlaced 3:2 pulldown?

Dana 25. 10. 2015. 07:49 osoba "Mel Matsuoka" napisala je: > > I'm trying to convert 23.98p ProRes QuickTime (.mov) files to interlaced 29.97 ProRes files, and I'd like to do the frame-rate conversion to 29.97i by using a 3:2 pulldown cadence (upper-field first). > > I

Re: [FFmpeg-user] scaling algorithms

Dana 17. 10. 2015. 13:29 osoba "Michael Koch" napisala je: > > Hi all, > > I have some questions about the scaling algorithms in FFmpeg. > https://www.ffmpeg.org/ffmpeg-scaler.html#sws_005fflags > > 1. Which is the default algorithm? > > 2. I have many pictures with

Re: [FFmpeg-user] cropdetect filter missing when running today snapshot version

On 10/9/15, Etienne Desautels wrote: > > I compiled the snapshot version today (version N-75845-g079d553) on Ubuntu > 10.04 and when running it with a cropdetec filter I got this output: > > ffmpeg -f concat -safe 0 -i /tmp/dvd_concat.txt -f null -af >

Re: [FFmpeg-user] FFmpeg concat outputs bad video file

On 10/6/15, Ryan Mirman wrote: > When I try to concat these 3 video files, it outputs a video with a too > short of a duration and way too high of a bitrate. > > I am not sure if I am using ffmpeg the wrong way, if the audio is > corrupted, or if it is a bug with ffmpeg? > > >

Re: [FFmpeg-user] Deterministic results with atadenoise

On 9/29/15, Robert Krueger wrote: > Hi, > > is anything in atadenoise random? I am trying to get reproducible results > for an automated test setup but just running the same command line twice > produces a files which have differences when comparing them via framemd5. I >

Re: [FFmpeg-user] Display rgb statistics

On 9/25/15, Robert Krüger wrote: > Hi, > > what is the recommended way to display stats about the pixel values of rgb > files? The signalstats filter seems to only support yuv, at least the > documentation does not mention anything about R(GB)MAX/AVG and the filter > does not

Re: [FFmpeg-user] Video lose quality after insert overlay images on video..

On 9/23/15, ankur456799 wrote: > Hi, I am using the overlay functionality after complete process its lose > some > quality.. Means its not so much bad quality, but it's not as original > video... > > i am using this. > > -i input.mp4 -shortest -loop 1 -i 57982344.png

Re: [FFmpeg-user] Can't get acrossfade to work properly

On 9/19/15, Jim Worrall wrote: > I am attempting to use ffmpeg to develop a finished video from raw video, > with fading audio and video in at the beginning, crossfading them between > clips, and fading them out at the end. I have three, 10-second clips for > testing

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

On 9/18/15, Gilles <codecompl...@free.fr> wrote: > On Fri, 18 Sep 2015 10:36:50 +0000, Paul B Mahol <one...@gmail.com> > wrote: >>mp eq2 was replaced by eq. > > Good to know. > > If you use the following, the video is all white, though: > > ffmpeg -ss 00:

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] 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] How to use ocr filter

On 9/17/15, Moritz Barsnick <barsn...@gmx.net> wrote: > On Thu, Sep 17, 2015 at 15:12:17 +0000, Paul B Mahol wrote: >> On 9/17/15, nicolab <robelt2...@gmail.com> wrote: >> > When I using ocr filter, how to output ocr text file ? > >> drawgraph accepts only fl

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

On 9/17/15, nicolab wrote: > When I using ocr filter, how to output ocr text file ? > https://ffmpeg.org/ffmpeg-filters.html#ocr > > img.png > > > ffmpeg -f lavfi -i >

Re: [FFmpeg-user] Add transparency image to video

On 9/16/15, kchandu5200 wrote: > Thanks for your response, and its working for png format. its my bad i was > changed the extinction of image jpg to png(So its not worked). how can i > make it for jpg as well. If jpg does not have alpha add it with 'format=yuva444p' filter

Re: [FFmpeg-user] Add transparency image to video

On 9/15/15, kchandu5200 wrote: > HI > > I want add image with transparency/alpha/opacity to video. How to change the > opacity off image and add to video. > This is the my command. > ffmpeg -i input_1.mp4 -i 1.png -filter_complex "[0:v][1:v] >

Re: [FFmpeg-user] ffmpeg serving to Avisynth

On 9/15/15, Francois Visagie wrote: >> -Original Message- >> From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf Of >> Frank Tetzel >> Sent: 14 September 2015 21:40 >> To: ffmpeg-user@ffmpeg.org >> Subject: Re: [FFmpeg-user] ffmpeg serving to

Re: [FFmpeg-user] Add transparency image to video

On 9/15/15, kchandu5200 wrote: > Thanks for you response, > lutyuv not working. If i am running wrong command, please make me to write > command. > > ffmpeg -i input_1.mp4 -i 1.png -filter_complex "[0:v] setpts=PTS-STARTPTS > [vid]; [1:v] setpts=PTS-STARTPTS, lutyuv=a=0.1,

Re: [FFmpeg-user] ffmpeg serving to Avisynth

On 9/15/15, Francois Visagie <francois.visa...@gmail.com> wrote: >> -Original Message- >> From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf Of >> Paul B Mahol >> Sent: 15 September 2015 12:46 >> To: FFmpeg user questions >>

Re: [FFmpeg-user] Dropping frames on simple split and recombine.

On 9/15/15, Scott Chamberlain wrote: > On Mon, Sep 14, 2015 at 4:45 PM, Carl Eugen Hoyos wrote: >> >> >> Then please use the fifo filter. >> >> Carl Eugen >> > > I guess I do not understand how to use the filter correctly. > > If I try > >

Re: [FFmpeg-user] how to overlay video frame info on output

Dana 11. 9. 2015. 14:25 osoba "郑建峰" <163j...@163.com> napisala je: > > Hi, > > > I know "-vf showinfo" can "Show a line containing various information for each input video frame. The input video is not modified." > What if I want the output frame to be modified? Is there any method to overlay the

Re: [FFmpeg-user] h264 (yuv420p) to ffv1: "Assertion s->bits_per_raw_sample >= 8 failed"

On 9/9/15, Peter B. wrote: > I've just received a request, regarding an error message when converting > from h264/PCM/MOV to FFV1/PCM/AVI. > The transcoding doesn't start and exits with the following error message: > > [quote] > "Assertion s->bits_per_raw_sample >= 8

Re: [FFmpeg-user] Compiling on OSX from scratch: error: use of undeclared identifier 'O_SEQUENTIAL'

On 9/7/15, Carl Eugen Hoyos wrote: > Moritz Barsnick gmx.net> writes: > >> access = O_RDONLY; >> >> But git blame claims that line has never >> changed since this file exists. > > He is - afaict - using a patchset by our current > project leader that I consider not easy to

Re: [FFmpeg-user] decoding jpeg2000 problem

On 9/4/15, Carl Eugen Hoyos wrote: > Carles Vila gmail.com> writes: > >> I've run into a problem when converting a j2c >> image sequence to ProRes. > > First, please update to current FFmpeg git head, > nothing else is supported here. > > You are using --enable-libopenjpeg in

Re: [FFmpeg-user] decoding jpeg2000 problem

On 9/4/15, Carl Eugen Hoyos wrote: > Carles Vila gmail.com> writes: > >> Here's the command line. I had to include >> -pix_fmt xyz12le in order to have it detect >> xyz of the jpeg2000. >> However, the output still looks posterized. > > I am not sure if I understand the word

Re: [FFmpeg-user] decoding jpeg2000 problem

On 9/4/15, Carl Eugen Hoyos <ceho...@ag.or.at> wrote: > Paul B Mahol gmail.com> writes: > >> Compare native decoder output with one from ImageMagick. > > Iirc, ImageMagick does not support xyz, so this is always > broken. Colors are

Re: [FFmpeg-user] how to convert to raw interlaced format

Dana 2. 9. 2015. 03:24 osoba "Lyman Hurd" napisala je: > > Okay in a "duh" moment I realize that the requested output format was > "fmt:yuv422p' (where the "p" obviously stands for progressive). Looking at > the list of supported output formats I am not seeing any raw

Re: [FFmpeg-user] Stats

Dana 2. 9. 2015. 00:47 osoba "Marc Camacho" napisala je: > > There is not way to do this? > > Thanks... > Stats with what? > > De: Marc Camacho Cateura > Respondre: Marc Camacho Cateura > > Data: 29 d’agost de 2015

Re: [FFmpeg-user] overlay with video offset not starting audio with same offset

q=10.0 Lsize=4326kB time=00:00:13.19 bitrate=2686.7kbits/s video:4108kB audio:206kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.290611% On 8/29/15, 7:58 AM, ffmpeg-user on behalf of Paul B Mahol ffmpeg-user-boun...@ffmpeg.org on behalf of one...@gmail.com

Re: [FFmpeg-user] overlay with video offset not starting audio with same offset

On 8/29/15, Chad Horton chor...@hotsalsainteractive.com wrote: I didn't provide my attempts because I was randomly throwing adelay and then atrim into my command and nothing worked. My hope is that someone could show me how to do it properly with my current command and adding in the atrim

Re: [FFmpeg-user] overlay with video offset not starting audio with same offset

be better solution. On 8/28/15, 2:58 PM, ffmpeg-user on behalf of Paul B Mahol ffmpeg-user-boun...@ffmpeg.org on behalf of one...@gmail.com wrote: Dana 28. 8. 2015. 23:15 osoba Chad Horton chor...@hotsalsainteractive.com napisala je: I have a video with audio (overlayvideo.mov) that I'm

Re: [FFmpeg-user] Syncing stereo videos - what method?

Dana 29. 8. 2015. 01:40 osoba Jesper Taxbøl jes...@taxboel.dk napisala je: Hi Guys, I am trying to sync two videos recorded simultaniously from a stereo setup. I am extracting their audio (mono) and find their offset, which I can easily find in Audacity. With the offset in hand I cut off

Re: [FFmpeg-user] overlay with video offset not starting audio with same offset

Dana 28. 8. 2015. 23:15 osoba Chad Horton chor...@hotsalsainteractive.com napisala je: I have a video with audio (overlayvideo.mov) that I'm overlaying over another video (basefilem.mp4) and I'm starting the overlay at 20 seconds. The output (finalvideo.mp4) looks great, but the audio from the

Re: [FFmpeg-user] example for sendcmd color

On 8/19/15, Basin Ilya basini...@gmail.com wrote: Hi. What's the syntax for sendcmd to change color? I tried: ffplay -f lavfi -i color=s=640x480:r=25:c=blue -vf sendcmd=c='1.0 color c red',color and ffplay -f lavfi sendcmd=c='1.0 color c red',color=s=640x480:r=25:c=blue but

Re: [FFmpeg-user] scale filter does not do anything when only color matrix is changed

On 8/26/15, Robert Krueger krue...@lesspain.de wrote: Hi, I created two files using these command lines: ffmpeg -i fcp7_xdcam_ex_1080_25p_1s.mov -vf scale=in_color_matrix=bt709:out_color_matrix=bt601 -c:v ffv1 -an scale_test_bt601.nut ffmpeg -i fcp7_xdcam_ex_1080_25p_1s.mov -c:v ffv1 -an

Re: [FFmpeg-user] Possible to set color_range on the command line for mjpeg?

Dana 25. 8. 2015. 17:50 osoba Robert Krüger krue...@lesspain.de napisala je: Hi, for the purpose of debugging something in the libraries and submitting a corresponding bug report, I would like to specify the color_range of the codec context on the command line, i.e. in this case I want to

Re: [FFmpeg-user] Is FFV1 able to encode interlaced video?

On 8/10/15, Andy Furniss adf.li...@gmail.com wrote: Carl Eugen Hoyos wrote: Please understand that there is a difference between interlaced content and interlaced encoding. There is no interlaced encoding with FFv1 because it appears not to save any bytes in the output file and if you have

Re: [FFmpeg-user] Is FFV1 able to encode interlaced video?

On 8/10/15, Andy Furniss adf.li...@gmail.com wrote: Paul B Mahol wrote: On 8/10/15, Andy Furniss adf.li...@gmail.com wrote: Carl Eugen Hoyos wrote: Please understand that there is a difference between interlaced content and interlaced encoding. There is no interlaced encoding with FFv1

Re: [FFmpeg-user] Is FFV1 able to encode interlaced video?

Dana 9. 8. 2015. 15:31 osoba MrNice wxcvbn2...@iol.ie napisala je: Hi From an interlaced input (video tape) is it possible to capture interlaced video file encoded with FFV1 (using -flags +ilme+ildct)? I can't find an answer after long search. All my captures seem to be converted to

Re: [FFmpeg-user] libx265 - 8-bit vs. 10-bit?

On 8/8/15, Carl Eugen Hoyos ceho...@ag.or.at wrote: Paul B Mahol onemda at gmail.com writes: If I encoded to 10-bit libx265, would that produce a higher-quality video than 8-bit at the same bitrate? Yes, at least in theory. If the source is 8 bit depth. No, search for a darkshikari

Re: [FFmpeg-user] Extracting video levels on the command line

Dana 3. 8. 2015. 22:28 osoba Moritz Barsnick barsn...@gmx.net napisala je: On Mon, Aug 03, 2015 at 21:55:59 +0200, Robert Krüger wrote: Is there any other way than looking at each frame's histogram (using the histogram filter) and counting pixels? It should probably be easy to write such a

Re: [FFmpeg-user] How to capture an RTMP stream

On 7/26/15, Carl Eugen Hoyos ceho...@ag.or.at wrote: Deron deron at pagestream.org writes: I would have to get ffmpeg to work to begin with to test that. Should I try ffmpeg without librtmp? That would be a good idea imo. I captured short file without problems, with native rtmp support.

Re: [FFmpeg-user] multiple fade out slow down encoding about two to three times

Dana 25. 7. 2015. 20:31 osoba Tomáš Hnyk tomash...@gmail.com napisala je: Hello, I created initial captions with fade ins and outs like this: ffmpeg -i in.mov \ -framerate 24 -loop 1 -i a/01.png \ -framerate 24 -loop 1 -i a/02.png \ -framerate 24 -loop 1 -i a/03.png \ -framerate 24

Re: [FFmpeg-user] Error reading 10bit H264 in Matroska

Dana 15. 7. 2015. 20:59 osoba Leo Izen leo.i...@gmail.com napisala je: On 07/15/2015 11:12 AM, Carl Eugen Hoyos wrote: Leo Izen leo.izen at gmail.com writes: I have a peculiar case. I have a matroska file that's got an h264 stream inside. When I play this file with ffplay, it plays fine.

Re: [FFmpeg-user] Framemd5 filter error for atomised Avid 1:10 bit.mxf

On 7/10/15, Kieran O'Leary kieran.ole...@irishfilm.ie wrote: Please also provide the mov file. Carl Eugen ___ This is three frames of colour bars, ingested as avid 1:1 10 bit.mxf, exported same as source.mov.

Re: [FFmpeg-user] Framemd5 filter error for atomised Avid 1:10 bit.mxf

On 7/10/15, Kieran O'Leary kieran.ole...@irishfilm.ie wrote: framemd5 won't help you determine 'how much' visual difference there is between an exported file and a reference file. Depending on how you run it, framemd5 would only confirm if the two files decode to the same raw frame or

Re: [FFmpeg-user] Framemd5 filter error for atomised Avid 1:10 bit.mxf

On 7/10/15, Carl Eugen Hoyos ceho...@ag.or.at wrote: Kieran O'Leary kieran.oleary at irishfilm.ie writes: That scares me! The bitrate looks close to v210 (220Mbps vs 213Mbps), but it's actually 8-bit video? You can use the following inlined patch to check for yourself. PLEASE fix your

Re: [FFmpeg-user] Recent build - transpose not working

Dana 7. 7. 2015. 23:19 osoba Tim Greiser tgrei...@gmail.com napisala je: On Tue, Jul 7, 2015 at 2:48 PM, Paul B Mahol one...@gmail.com wrote: Try removing filter from command, does anything happens? Yes, thank you! It seems to produce a transposed copy by default now, is that correct

Re: [FFmpeg-user] Recent build - transpose not working

Dana 7. 7. 2015. 21:42 osoba Tim Greiser tgrei...@gmail.com napisala je: I have been using -vf transpose=1 and similar filters for some time with good results to rotate mp4 files that have been taken on mobile devices. In my latest build of ffmpeg, the transpose filter no longer seems to have

Re: [FFmpeg-user] Need more detailed description of the behaviour of the -ac channelcount option

On 7/2/15, Christoph Gerstbauer christophgerstba...@gmail.com wrote: Am 02.07.2015 um 11:04 schrieb Paul B Mahol: On 7/2/15, Christoph Gerstbauer christophgerstba...@gmail.com wrote: Then please don't use it, use an audiofilter instead. (The one that fits your needs.) I am not convinced

Re: [FFmpeg-user] Need more detailed description of the behaviour of the -ac channelcount option

On 7/2/15, Christoph Gerstbauer christophgerstba...@gmail.com wrote: Then please don't use it, use an audiofilter instead. (The one that fits your needs.) I am not convinced that the current mapping of -ac to aresample is immutable. (Even if it is, you can still use the filter and you are

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

Dana 2. 7. 2015. 17:44 osoba nicolab robelt2...@gmail.com napisala je: Setting color RGB(0xff), Green is fine, but Red, Blue is reversed? It is in aabbggrr format because its calculated from expression. example ffplay -f lavfi aevalsrc=sin(440*2*PI*t):s=8000,showvolume=c=0x00ff00 color

Re: [FFmpeg-user] How to add alpha channel to normal png image

On 6/28/15, Paul B Mahol one...@gmail.com wrote: On 6/28/15, qw applema...@163.com wrote: At 2015-06-28 17:11:03, Paul B Mahol one...@gmail.com wrote: Dana 28. 6. 2015. 09:31 osoba qw applema...@163.com napisala je: Hi, PNG format supports alpha channel, but some png images don't have alpha

Re: [FFmpeg-user] How to add alpha channel to normal png image

Dana 28. 6. 2015. 09:31 osoba qw applema...@163.com napisala je: Hi, PNG format supports alpha channel, but some png images don't have alpha channel. How to add alpha channel to those png images and set alpha value? See colorkey filter documentation. Thanks! B.R. Andrew

Re: [FFmpeg-user] How to make partially transparent png image

Dana 28. 6. 2015. 07:28 osoba compn...@verizon.net napisala je: At 6/27/2015 09:02 PM, you wrote: Hi, In normal png file, there is no alpha channel, and there is color in the background. If there is alpha channel in png files, the background can be transparent, and the object in png file

Re: [FFmpeg-user] ffmpeg reports no colorkey filter

On 6/28/15, qw applema...@163.com wrote: Hi, I use the below command to run colorkey filter, but ffmpeg report there is no colorkey filter: [root@localhost ffmpegOverlay]# ffmpeg -i ./transparent_3.png -vf colorkey=green ./transparent_3_test1.png ffmpeg version 2.7.1 Copyright (c)

Re: [FFmpeg-user] How to add alpha channel to normal png image

On 6/28/15, qw applema...@163.com wrote: At 2015-06-28 17:11:03, Paul B Mahol one...@gmail.com wrote: Dana 28. 6. 2015. 09:31 osoba qw applema...@163.com napisala je: Hi, PNG format supports alpha channel, but some png images don't have alpha channel. How to add alpha channel to those png

Re: [FFmpeg-user] how to blend logo and video with transparent effect

On 6/27/15, qw applema...@163.com wrote: At 2015-06-27 00:21:56, Paul B Mahol one...@gmail.com wrote: On 6/26/15, Paul B Mahol one...@gmail.com wrote: On 6/26/15, qw applema...@163.com wrote: Hi, I use the below command to blend logo image and video together with transparent effect: ffmpeg

Re: [FFmpeg-user] Silence Removal

On 6/27/15, sk8f teju_kurnool-at-yahoo@ffmpeg.org wrote: I have an audio file which has the following specifications. Codec: MPEG AAC Audio (mp4a) Channels: Stereo Sample rate: 44100 Hz Bitrate: 253 kbps It has both leading and trailing silence. I want to remove the silences AND keep

Re: [FFmpeg-user] how to blend logo and video with transparent effect

On 6/26/15, Paul B Mahol one...@gmail.com wrote: On 6/26/15, qw applema...@163.com wrote: Hi, I use the below command to blend logo image and video together with transparent effect: ffmpeg -i ./file1.mp4 -i ./logo.jpg -filter_complex blend=all_mode=overlay ./file3.mp4 But the command

Re: [FFmpeg-user] how to blend logo and video with transparent effect

On 6/26/15, qw applema...@163.com wrote: Hi, I use the below command to blend logo image and video together with transparent effect: ffmpeg -i ./file1.mp4 -i ./logo.jpg -filter_complex blend=all_mode=overlay ./file3.mp4 But the command requires the same resolution from logo image and

Re: [FFmpeg-user] how to use alpha channel to make transparent effect

On 6/26/15, Frank Tetzel s1445...@mail.zih.tu-dresden.de wrote: I use the below command to place one image on one video:ffmpeg -i ./file1.mp4 -i ./file2.jpg -filter_complex overlay ./file3.mp4 But there is no transparent effect in resulting file, i.e. file3.mp4. What is the command to use

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