26 May

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 08:02
  Nodejs - ffmpeg - unable to live convert webcam to hls file - Jeff55 Newest 'ffmpeg' Questions - Stack Overflow
  Okay so long story short: I need to be able to accept a video stream from my usb port and offer this up to my frontend (React) using HLS/RTMP/WebRTC. I opted for HLS because it seems to have the least amount of dependencies and this may end up running on a Pi, so simplicity is good. const spawn = require('child_process'); var args = [ '-pix_fmt', 'uyvy422', '-f', 'avfoundation', '-framerate', '30', '-i', '0', '-c:v', 'libx264',  (...)
• 07:54
  Center crop image overlay using FFmpeg - HB. Newest 'ffmpeg' Questions - Stack Overflow
  I currently have an image that is being overlayed on top of a video, as demonstrated in this image: The blue square is representing the video and the purple lines are representing the image on top of the video. Currently, I have the following command: "-i", InputVideoPath, "-i", InputImagePath, "-filter_complex", "[0:v]scale=iw*sar:ih,setsar=1,pad='max(iw\\\\,2*trunc(ih*9/16/2))':'max(ih\\\\,2*trunc(ow*16/9/2))':(ow-iw)/2:(oh-ih)/2[v0];[1:v][v0]scale2ref[v1][v0];[v0][v1]overlay=x=(W-w)/2:y=(H-h)/2[v]", "-map", "[v]", (...) -- , ,
• 04:21
  How to bulk convert .avi to .mkv with ffmpeg and add specific meta title without lossing quality? - Ayush Patel Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to convert a folder of 361 .avi files to .mkv... And at time of encoding I need to add specific meta titles as:-"cartoon T&J"... Eg: Input file: Ep01.avi output file: Ep01 cartoon T&J.mkv (meta title as "cartoon T&J" )
• 03:55
  FFmpeg freezes during trim, concat and add watermark - Nguyễn Trọng Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to cut each video and change the speed of each, then I join them and finally add watermark. I calculated the percentage of the process and found it was working fine but it did not run to the onFinished function but stood still.I do not have a lot of clues why it happens. Anybody experienced something similar? cmd = [-y, -i, /storage/emulated/0/Story Saver/test.mp4, -i, /storage/emulated/0/.FXMotion/.LOGO/logo_watermark.png, -filter_complex_script, /storage/emulated/0/.FXMotion/.Script/script.txt, -map, [vw], -c:v, libx264, -pix_fmt, yuv420p, -crf, 18, -preset, (...) -- content script
• 03:45
  looking for gui based HLS downloader based on ffmpeg & or better download code - wahiduzzaman sagar Newest 'ffmpeg' Questions - Stack Overflow
  currently using ffmpeg for downloading HLS video (m3u8). the code i am using is ffmpeg -i "www.videoURL.com" -c copy "name name".mp4 its works fine but the problem is it takes a bit more time since I also have to give each video a name where other downloader (video downloadhelper) can automatically get a name from URL. video downloadhelper crashing/stopping a lot so not using it now. also it cant boost speed so i have to run 10-12 simultaneous ffmpeg download with command prompt open to keep the bandwidth use high. which is cluttering the screen and being hard to (...)
• 04:38
  How to get a list of video devices with a particular VendorID and/or ProductID using FFmpeg (on Mac OS) - mcgregor94086 Newest 'ffmpeg' Questions - Stack Overflow
  The master task: I am writing software for a multiple USB camera array. The camera may be connected to a CPU that has other USB cameras builtin or attached. I need to capture one 1920x1080 JPG image from EACH of MY array's cameras into a directory of images - but I need to EXCLUDE any OTHER cameras when taking pictures. Right now I am trying to implement for MacOS, but in the future I will be implementing for Windows, Linux, iOS and Android. What is known: I know the VendorID, ProductID and UniqueID (reported by the MacOS USB system System (...)
• 04:52
  Error of FFmpeg on Java in "av_image_copy_to_buffer" method during decoding H.264 stream - maru2213 Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to decode H.264 stream, which is sent over Socket from an Android application to a computer. And I also want to show the decoded stream using JavaFX. I searched for a long time, and decided to use JavaCV / FFmpeg. However I got error from FFmpeg. (I was inspired by this code.) Questions: Why does FFmpeg make error? Is it a correct way to convert AVFrame to javafx.scene.image.Image? I'm using: javacv-platform 1.4.4 ffmpeg-platform 4.1-1.4.4 Code: This is a part of import and class (...) -- this code

25 May

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 22:38
  ffmpeg multiple process in background - mastersam Newest 'ffmpeg' Questions - Stack Overflow
  Immortal set ffmpeg process in while but only one process in background. Is the any way to set ffmpeg command to more than 1 process ? immortal -r -1 ffmpeg
• 22:24
  FFmpeg Error "No such filter: 'libvmaf' Mac - ringola27 Newest 'ffmpeg' Questions - Stack Overflow
  I want to use FFmpeg to calculate PSNR for video sequences. At first I installed libvmaf with the instruction from here and here. I installed ffmpeg like here. I tried for a test: ffmpeg -i output4.mpg -i output1.mpg -lavfi libvmaf -f null - But I get an Error (below). I think I could solve it with ./configure --enable-libvmaf --enable-version3 or ./configure --enable-libvmaf but unfortunately I can not run it (I don't know how). I hope anyone can help me to solve this problem. ffmpeg version 4.2.3 Copyright (c) 2000-2020 the FFmpeg (...) -- here, here, here
• 22:14
  FFMPEG is it faster to concat protocol or demux multiple h264 and aac mp4s? - yasgur99 Newest 'ffmpeg' Questions - Stack Overflow
  I would like to combine multiple mp4 videos encoded with h264 as the video codec and aac as the audio codec. The mp4 videos have differing durations. Is it faster to use the concat protocol or do a concat demux?
• 22:00
  Cutting the videos based on start and end time using ffmpeg - Kalai Newest 'ffmpeg' Questions - Stack Overflow
  I tried to cut the video using the start and end time of the video by using the following command ffmpeg -ss 00:00:03 -t 00:00:08 -i movie.mp4 -acodec copy -vcodec copy -async 1 cut.mp4 By using the above command i want to cut the video from 00:00:03 to 00:00:08. But it is not cutting the video between those times instead of that it is cutting the video with first 11 seconds. can anyone help me how resolve this? Edit 1: I have tried to cut by using the following command which is suggested by mark4o ffmpeg -i movie.mp4 -ss 00:00:03 -t (...)
• 21:00
  ffmpeg HLS transcoding and chunks upload to remote server - Georgе Stoyanov Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to create a so called origin server for storing the hls chunks and the manifest file on a remote server. The sending machine running ffmpeg is with IP: 192.168.178.50 and the web server which has to store both the HLS chunks and the manifest file is with IP: 192.168.178.100. My ffmpeg transcoding command line is: $ ffmpeg -i 01_llama_drama_1080p.mp4 -profile:v high -level 5.2 -s 1920x1080 -strict -2 -start_number 0 -hls_time 6 -hls_list_size 0 -f hls http://192.168.178.100/hls/test.m3u8 ffmpeg version 2.8.11-0ubuntu0.16.04.1 Copyright (c) 2000-2017 the (...)
• 20:43
  How to use ffmpeg stream copy within bash "for loop"? - Tom Vanwinkel Newest 'ffmpeg' Questions - Stack Overflow
  ok i have this and it works but it's slow for i in *.mov; do name=`echo "$i" | cut -d'.' -f1` echo "$name" ffmpeg -i "$i" "$name.mp4" done I want it to convert with these ffmpeg options ffmpeg -i movie.mov -vcodec copy -acodec copy out.mp4
• 20:33
  Unknown encoder 'libfaac' - hyperrjas Newest 'ffmpeg' Questions - Stack Overflow
  I'm using carrierwave-video to upload video with my ruby on rails app. But I have this problem when try encode the video: Unknown encoder 'libfaac' Errors: no output file created. I have tried with: sudo apt-get install libfaac-dev but I get the same error. Updated: After compile ffmpeg, I get the same error: Metadata: major_brand : mp42 minor_version : 0 compatible_brands: mp42isomavc1 creation_time : 2011-10-13 18:54:50 encoder : HandBrake 0.9.5 2011010300  (...) -- carrierwave-video
• 19:47
  FFMPEG: Auto restart the script when stuck - F O X Newest 'ffmpeg' Questions - Stack Overflow
  i'm running various scripts with ffmpeg like streaming on youtube, recording camera ip etc. Sometimes my running scripts just stuck or stop working, there is no info about any errors or smth, they just got stuck, numbers doesn't change and i need to login to my server and click ctrl+z to stop it and then run it again. So... is there any way to make it automatic? I tried many solutions founded in the web but most of them are based on errors but my scripts usually dont show any errors, they just stuck. I'm using Raspbian OS on Raspberry (...)
• 19:36
  Unplayable video after running FFmpeg command - HB. Newest 'ffmpeg' Questions - Stack Overflow
  I asked this question last year. I resolved the issue I had and I implemented the same logic for merging an image with a video, instead of two images. This is running on Android. Here is the command I'm using currently: "-i", mFilePath, "-i", drawingPath, "-filter_complex", "[0:v]scale=iw*sar:ih,setsar=1,pad='max(iw\\\\,2*trunc(ih*47/80/2))':'max(ih\\\\,2*trunc(ow*80/47/2))':(ow-iw)/2:(oh-ih)/2[v0];[1:v][v0]scale2ref[v1][v0];[v0][v1]overlay=x=(W-w)/2:y=(H-h)/2[v]", "-map", "[v]", "-map", "0:a", "-c:v", "libx264", "-preset", "ultrafast", "-r", (...) -- Here are all the videos
• 19:07
  How to change Chromuim alsa sound device - Edik Amperyan Newest 'ffmpeg' Questions - Stack Overflow
  I need to run multiple browser windows at multiple alsa sound devices to record them using snd-aloop and ffmpeg in Ubuntu 18.04. I created three loopback devices: sudo modprobe snd-aloop enable=1,1,1 index=10,11,12 and tried to run chromium-browser with --alsa-output-device flag with different values (such as device name, number, "plug:" + name) but it always uses default device (checking it using pavucontrol). Does this flag work? Is there any other way to select sound device for application? I can do it using pavucontrol GUI but I need to do it (...)
• 18:44
  Converting a color video to 8-bit (per frame) video via FFMPEG - SilverSurfer Newest 'ffmpeg' Questions - Stack Overflow
  I wish to convert a color video file (AVI format) to grayscale video (i.e. 8 bits per frame) AVI video via FFMPEG. Any pointers? I have tried using gray and yuv420p options in pix_fmt but it they didn't help. Thank you
• 18:16
  FFMPEG scaling watermark - razz Newest 'ffmpeg' Questions - Stack Overflow
  I'm currently using a command to add a watermark + scrolling text and some extra encoding options to a video. The watermark + scrolling text are made to fit correctly when the video is 1280px (width) but when the original video is any other size (for example 1920px) the watermark + scrolling text gets tiny so i need to scale this. watermark size= 400x48 Current code i'm using i logo.png -filter_complex "[0:v][1:v] (...)
• 16:11
  How to determine webm duration using ffprobe - Lopakhin Newest 'ffmpeg' Questions - Stack Overflow
  My goal is simple , I have several webm files need to be concated, but first I need to determine their durations. It seems webm file are played as streams, so there is no way to tell the length of each file. I have been using ffprobe to do the job ,but the duration returned is N/A.The command I use was: ffprobe -i input.file -show_format | grep duration thanks. The complete output of ffprobe list below: ffprobe version 2.6.2 Copyright (c) 2007-2015 the FFmpeg developers built with Apple LLVM version 6.1.0 (...)
• 16:02
  ffmpeg difference when using -lavfi or -filter_complex - Luiz Cieslak Newest 'ffmpeg' Questions - Stack Overflow
  I've started to use ffmpeg recently. I have been using only the -filter_complex flag to apply filters. I stumbled upon this SO question: FFmpeg: How to convert horizontal video 16:9 to vertical video 9:16, with blurred background on top and bottom sides A ffmpeg maintainer answers it using the -lavfi flag: ffmpeg -i input.mp4 -lavfi "[0:v]scale=iw:2*trunc(iw*16/18),boxblur=luma_radius=min(h\\,w)/20:luma_power=1:chroma_radius=min(cw\\,ch)/20:chroma_power=1[bg];[bg][0:v]overlay=(W-w)/2:(H-h)/2,setsar=1" output.mp4 I tried to change -lavfi flag to (...)
• 15:20
  Forwarding an RTSP stream from IP camera to youtube - cbake Newest 'ffmpeg' Questions - Stack Overflow
  I have an IP camera (Foscam FI9800P) capable of sending an RTSP stream (I've confirmed using VLC the stream works). I want to stream the video from that camera to youtube. I'm guessing the camera can't send it to youtube directly, so I need a device in the middle. Something like: IP Camera --> Raspberry Pi --> Youtube live Ideally I'd like to do this without re-encoding the video along the way. ffmpeg appears to be able to do this, but it has many options and I haven't been able to figure out all its command line options.  (...)
• 15:02
  CLI Extract date/time stamp (timestamp) from quicktime or mpeg files - vy32 Newest 'ffmpeg' Questions - Stack Overflow
  Is there a way to extract a date/time or a timestamp from various multi-media container files with Quicktime or MPEG2/MPEG4? I'm looking ideally for a command line tool. I have been able to get timestamps using ffprobe, part of the ffmpeg suite, but I haven't gotten the year, month and date. The camera had a clock so I'm pretty sure that this information was available. The history of this data file is that it was first shot on miniDV and transferred to a Mac over Firewire 800 using QuicktimePlayer to record the video. I'm told that the miniDV format is (...)
• 14:46
  How to get the video duration using FFMPEG in C# asp.net - Hamad Newest 'ffmpeg' Questions - Stack Overflow
  I want to get the video file duration in string using C#. I searched the internet and all i get is: ffmpeg -i inputfile.avi And every1 say that parse the output for duration. Here is my code which is string filargs = "-y -i " + inputavi + " -ar 22050 " + outputflv; Process proc; proc = new Process(); proc.StartInfo.FileName = spath; proc.StartInfo.Arguments = filargs; proc.StartInfo.UseShellExecute = false; proc.StartInfo.CreateNoWindow = false; proc.StartInfo.RedirectStandardOutput = false;  (...)
• 13:10
  Record live stream using ffmpeg as Process in Java - Serbroda Newest 'ffmpeg' Questions - Stack Overflow
  I can not figure out how to start a Process in Java for recording a live stream with ffmpeg. I've tried several solutions, but my current code looks like this (simplified): public void startDownload() String[] processArgs = new String[] "ffmpeg", "-i", "https://ndrfs-lh.akamaihd.net/i/ndrfs_ndsⓐ430233/index_3776_av-p.m3u8", "-c", "copy", "-bsf:a", "aac_adtstoasc", "C:\\\\temp\\\\test.mp4" ; ProcessBuilder processBuilder = new ProcessBuilder(processArgs); try process = (...)
• 11:47
  Standardized "Skip Intro" in MP4 video files? - Crissov Newest 'ffmpeg' Questions - Stack Overflow
  Is there a standardized way to mark up specific parts of a MP4-contained video as skippable, e.g. trailers, recaps, intros/outros, opening/closing credits, in the metadata in the file itself? If possible, I would like to set this with FFmpeg or MP4box. I know that the mvhd box in MOV files makes it possible to specify a single preview. I assume Netflix and the like use specially named or hinted chapters, either from file-internal metadata or from a central database, to provide this feature. I want to add this now to videos in my personal library, just in case Kodi, VLC (...) -- ISO/IEC 14496-12:2015 (ISOBMFF)
• 11:45
  How to add a Poster Frame to an MP4 video by timecode? - Crissov Newest 'ffmpeg' Questions - Stack Overflow
  The mvhd atom or box of the original Quicktime MOV format supports a poster time variable for a timecode to use as a poster frame that can be used in preview scenarios as a thumbnail image or cover picture. As far as I can tell, the ISOBMFF-based MP4 format (.m4v) has inherited this feature, but I cannot find a way to set it using FFmpeg or MP4box or similar cross-platform CLI software. Edit: Actually, neither ISOBMFF nor MP4 imports this feature from MOV. Is there any other way to achieve this, e.g. using something like HEIFʼs derived images with a thmb (see Amendment 2) role?  (...) -- FFmpeg, MP4box, Amendment 2, , Compressor, Photos,
• 11:37
  ffmpeg unable to save a frame at specific time - Gowtham Newest 'ffmpeg' Questions - Stack Overflow
  I followed Im getting error "deprecated pixel format used, make sure you did set range correctly using ffmpeg".. can someone check my code below? to save a frame from a video but the saved frame is of timestamp 00:00:00 instead of the given timestamp $ ffmpeg -i 001\\ Introduction.mp4 -ss 00:03:12.00 -vframes 1 side_view.jpg ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers built with gcc 9.3.0 (Gentoo 9.3.0 p2) configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --docdir=/usr/share/doc/ffmpeg-4.2.2/html --mandir=/usr/share/man (...)
• 12:39
  RTMP push Android camera SDK - jmsiox Newest 'ffmpeg' Questions - Stack Overflow
  I have been trying to implement RTMP push using libraries like RtmpPublisher , LiveVideoBroadcaster but I have not found success so far. They seem outdated and don't work as expected. I would like direction on either how to go about implementing this using custom solution or at least a working uptodate library. (I have read about using FFmpeg but there is nothing clearly showing how to implement this) On the server side I have no issues. I have a server that is able to receive RTMP pushed streams I just cant figure out how to implement on (...)
• 10:39
  Can't get watermark on my nginx-rtmp live streams with ffmpeg - mallebabbe Newest 'ffmpeg' Questions - Stack Overflow
  Goodday, I'm trying to get my livestreams watermarked but for some reason the streams aren't transcoded with the image I want to have on top. My current build is: Stream from OBS to Nginx-RTMP server In the nginx.conf I've an app configured with the name live which should trigger ffmpeg execution and transfer the output to the push app to deliver the final stream to the different Social Media platform All is working without the ffmpeg execution. My OBS Stream configuration looks like (...)
• 10:34
  Matplotlib: animation saved with trace - Thiziri yoor Newest 'ffmpeg' Questions - Stack Overflow
  In the following Python code, I am trying to make an animation of a 2 rotating vectors around the origin. I am using matplotlib 3.2.1 and Python 3.8.2 on Ubuntu 20.04. import numpy as np import matplotlib.pyplot as plt from matplotlib.animation import FuncAnimation r = 2.0 def circle(phi): return np.array([r*np.cos(phi), r*np.sin(phi)]) fig, ax = plt.subplots(figsize=(10,6)) ax.axis([-3.5*r,3.5*r,-2.5*r,2.5*r]) ax.get_xaxis().set_visible(False) ax.get_yaxis().set_visible(False) # set equal (...) -- ,
• 10:23
  How to merge audio and video file using ffmpeg in python? - NASK Newest 'ffmpeg' Questions - Stack Overflow
  I need to merge both audio and video using ffmpeg in python 3.7,could you help me to solve this issue? Here i used code : from pathlib import Path glob_path = Path(r"D:\\t") file_name = [str(pp) for pp in glob_path.glob(r'**/*.mp4')] print(file_name) video_stream = ffmpeg.input(file_name[0]) audio_stream = ffmpeg.input(file_name[1]) print(video_stream) print(audio_stream) ffmpeg.output(audio_stream, video_stream, 'out.mp4').run() I getting this out put error ['D:\\\\t\\\\audio.mp4', (...)
• 09:13
  Live Volume Pipe FFMPEG [closed] - Lukas L. Newest 'ffmpeg' Questions - Stack Overflow
  Is there any solution to update the pipe's volume of ffmpeg while streaming? I'm using golang to create a MusicPlayer. I've tried to use the filter:a "volume=0.5" (doesn't work), but I want to change the volume life. Is there any possibility to change the volume of audio bytes in golang?
• 05:03
  Decoding H.264 stream using FFmpeg on Java - maru2213 Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to decode H.264 stream, which is sent over Socket from an Android application to a computer. And I also want to show the decoded stream using JavaFX. I searched much hours, and decided to use JavaCV / FFmpeg. However I got error from FFmpeg. (I was inspired by this code) Questions: Why does FFmpeg make error? Is it a correct way to convert AVFrame to javafx.scene.image.Image? I'm using: javacv-platform 1.4.4 ffmpeg-platform 4.1-1.4.4 Code: This is a part of import and class fields, (...) -- this code
• 01:47
  Why can't Chrome 83 play this AV1 encoded video? - Slbox Newest 'ffmpeg' Questions - Stack Overflow
  The file plays great in VLC. I've tried adding the codecs="av01.0.05M.08" to the video source, but no luck - no browser will play it, despite what's stated here: https://caniuse.com/#feat=av1 The video was encoded like so: ffmpeg -i input.avi -pix_fmt yuva420p -f nut -c:v libaom-av1 -minrate 1k -b:v 350k -maxrate 2000k -strict experimental output.mp4 Browser console: Chrome gives no hint whatsoever as to why it won't play. Firefox gives some minor clues. Firefox shows the below Media resource (...) -- https://caniuse.com/#feat=av1
• 00:08
  How do I preserve side data when concatenating files in ffmpeg? - Mark Kahn Newest 'ffmpeg' Questions - Stack Overflow
  I have multiple 360 videos that I'm trying to concatenate in ffmpeg. The command it self is pretty straightforward: ffmpeg -f concat -i 0036_concat.txt -c copy -strict unofficial 36.mp4 where 0036_concat.txt is just a list of the individual files. The issue I'm having is that I can't get ffmpeg to preserve side data. Very simply put, ffprobe on any of the source files includes this: Side data: spherical: equirectangular (0.000000/0.000000/0.000000) And I can't, for the life of me, get that to propagate to the output (...)