24 mai

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

• 00:17
  ffmpeg Ghosting between RGB color channels - Blikpils Newest 'ffmpeg' Questions - Stack Overflow
  This seems like a very specific question so i hope there is someone who can help me out. Within FFMPEG i am trying to add (channel pack) 3 different grayscale videos in RGB within a webm or mp4 video. I got it to work to a degree via Merge planes. This is what i tried: ffmpeg -y -i video1.webm -i video2.webm -i video3.webm -filter_complex "[0:v]format=gray[r]; [1:v]format=gray[g]; [2:v]format=gray[b]; [g][b][r]mergeplanes=0x001020:format=gbrp" -pix_fmt yuv420p -t 00:00:03 output.webm This is the result: As you see the 9 is visible in the red and blue (...) --
• 00:11
  Ghosting in colour channels - Blikpils Newest 'ffmpeg' Questions - Stack Overflow
  This seems like a very specific question so i hope there is someone who can help me out. Within FFMPEG i am trying to add (channel pack) 3 different grayscale videos in RGB within a webm or mp4 video. I got it to work to a degree via Merge planes. This is what i tried: ffmpeg -y -i video1.webm -i video2.webm -i video3.webm -filter_complex "[0:v]format=gray[r]; [1:v]format=gray[g]; [2:v]format=gray[b]; [g][b][r]mergeplanes=0x001020:format=gbrp" -pix_fmt yuv420p -t 00:00:03 output.webm This is the result: As you see the 9 is visible in the red and blue (...) --

23 mai

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

• 23:57
  FFMPEG stream from python to browser using socketio - sam Newest 'ffmpeg' Questions - Stack Overflow
  I want to show the video on the browser streamed by ffmpeg. Here's the python script which i made but can't find the way to do so since i am not much into javascript. Can anyone help me please ? import socketio import subprocess import uvicorn sio = socketio.AsyncServer(async_mode='asgi', cors_allowed_origins='*') app = socketio.ASGIApp(sio) ⓐsio.event async def connect(sid, environ): await sio.enter_room(sid, 'Streaming') ⓐsio.event async def stream(cid): video_path = (...)
• 13:03
  What is the good library for video editing module in react.js? - tayyab manzoor Newest 'ffmpeg' Questions - Stack Overflow
  I want to add a module for video editing in my web app. I have researched about video editing tools like ffmpeg but it is not working. is there any plugin for video editing or I have to build my own with jquery? Thanks I have tried with npm package like ffmpeg but it is not working and I want to know is there any other pacakge for video editing.
• 13:45
  ffmpeg combine 3 mp4s and 1 mp3 into 1 mp4 with wiperight transitions - tim Newest 'ffmpeg' Questions - Stack Overflow
  How can I use ffmpeg to combine 3 mp4s and 1 mp3 into 1 mp4 with wiperight transitions between the videos and a fade out the audio at the end. The mp3 is longer than the the videos but I only want the resultant video to be the length of the 3 mp4s.
• 13:37
  NodeJS : Fail to write byte array input from webcam to ffmpeg spawn process - Thanesh Prabaghan Newest 'ffmpeg' Questions - Stack Overflow
  I'm using NodeJS server to display an HTML page which has webcam option. Once user visited to my NodeJS server, it will serve html page. User can allow webcam option and see webcam view on the page. In the backend, I send webcam stream (byte array) using socket.io. I receive byte array successfully in backend with the help of socket.io. BUT MY PROBLEM IS, I can't pipe this byte array to the ffmpeg spawn process. I don't know how to properly pipe this data to the ffmpeg. Once it done, all my problem will be solved. On the other side, I have node-media-server as (...)
• 10:43
  install ffmpeg on amazon ecr linux python - Luka Savic Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to install ffmpeg on docker for amazon lambda function. Code for Dockerfile is: FROM public.ecr.aws/lambda/python:3.8 # Copy function code COPY app.py $LAMBDA_TASK_ROOT # Install the function's dependencies using file requirements.txt # from your project folder. COPY requirements.txt . RUN yum install gcc -y RUN pip3 install -r requirements.txt --target "$LAMBDA_TASK_ROOT" RUN yum install -y ffmpeg # Set the CMD to your handler (could also be done as a parameter override outside of the Dockerfile) CMD (...)
• 11:54
  Android ffmpeg white space in input path causing "no such file or directory" - Mehran Newest 'ffmpeg' Questions - Stack Overflow
  I'm using the latest version of WritingMinds/ffmpeg-android-java library. I've tried single/double quoting the path with no success. I Logged my command after execution, please look to the input path where a subDirectory contains whiteSpace, a comma has been added between the space: ffmpeg, -i, "storage/emulated/0/Telegram/Telegram, Video/4_5828137322067002802.mp4", -vf... I split and run my command like this: String crop = "-ss " + skipTimeForCrop + " -noautorotate -i " + newPath + " -vframes 10 -vf (...) -- WritingMinds/ffmpeg-android-java
• 11:17
  FFMpeg fails to compile - Nicolas Appriou Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to compile a project that needs a specific version of ffmpeg to work. I isolated ffmpeg build and tried to compile it on its own as done in the parent project. It seems to be version 6.1.1, the build system downloads ffmpeg from this url https://github.com/FFmpeg/FFmpeg/archive/e38092ef9395d7049f871ef4d5411eb410e283e0.zip before building it. I'm using an up-to-date debian testing distribution. When trying to build it on my own, I got this error message: $ ./configure --enable-shared --disable-static --disable-programs --disable-doc $ (...) -- https://github.com/FFmpeg/FFmpeg/archive/e38092ef9395d7049f871ef4d5411eb410e283e0.zip
• 00:41
  Can't preserve metadata in ffmpeg video conversion - sakovias Newest 'ffmpeg' Questions - Stack Overflow
  I would like to preserve the creation time metadata when I convert videos using ffmpeg/avconv. Here is the file I'm trying to convert: $ ffmpeg -i in.avi ffmpeg version 0.8.6-4:0.8.6-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav developers built on Apr 2 2013 17:00:59 with gcc 4.6.3 Input #0, avi, from 'in.avi': Metadata: creation_time : 2013-08-12 06:59:14 encoder : CanonMVI06 Duration: 00:00:12.26, start: 0.000000, bitrate: 14549 kb/s Stream #0.0: Video: mjpeg, yuvj422p, 640x480, 30 tbr, 30 tbn, 30 tbc Stream (...)
• 00:12
  How to start CMD and execute command in current folder with a batch file [closed] - pzych0p4th Newest 'ffmpeg' Questions - Stack Overflow
  I have this command that I run via cmd in a folder and it executes without problems: for %i in (*) do ffmpeg -y -i "%i" -vcodec copy -acodec copy -map 0:v -map 0:a "%i.mp4" Now I want to create a batch file that I can just open and it will execute this command in the current folder. However for the life of me I cannot get anything to work. Ive tried googling the answer and tried lots of answers from here also, but it seems my knowledge is lacking a bit. If anyone can give any tips that would be appreciated, thanks. I apologize beforehand if something is blatantly (...)

22 mai

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

• 23:04
  How to pipe in and pipe out of ffmpeg in python? [closed] - sa_penguin Newest 'ffmpeg' Questions - Stack Overflow
  I want to use ffmpeg as a middleman to perform a functionality. The camera frames will be read through opencv and passed to ffmpeg for processing. FFMPEG need to pass the processed frames to opencv for displaying. Below is what I tried. The code hangs and is not displaying anything. Any help will be appreciated. import cv2 import math import subprocess as sp import ffmpeg import numpy as np def main(): cap = cv2.VideoCapture(0) if not cap.isOpened(): print("Camera can't open\\nexit") return -1 width = 640 height = (...)
• 23:24
  SOLVED: How to start CMD and execute command in current folder with a batch file - pzych0p4th Newest 'ffmpeg' Questions - Stack Overflow
  I have this command that I run via cmd in a folder and it executes without problems: for %i in (*) do ffmpeg -y -i "%i" -vcodec copy -acodec copy -map 0:v -map 0:a "%i.mp4" Now I want to create a batch file that I can just open and it will execute this command in the current folder. However for the life of me I cannot get anything to work. Ive tried googling the answer and tried lots of answers from here also, but it seems my knowledge is lacking a bit. If anyone can give any tips that would be appreciated, thanks. I apologize beforehand if something is blatantly (...)
• 21:39
  Getting (Estimated) Time Offset of the Errors Reported by ffmpeg - Haru Newest 'ffmpeg' Questions - Stack Overflow
  I'm using ffmpeg to check for errors in video files, but while it reports tons of issues it doesn't tell me where exactly the error happens in the file. It just dumps some crazy long hex numbers (0x7fa…) which doesn't tell me anything. Is there a way to make it report some timestamps, or at least estimated timestamps, or byte-offsets into the stream? I tried the -debug_ts flag, but nothing changed in the output. $ ffmpeg -debug_ts -v error -i a_broken_file.mp4 -f null - [h264 ⓐ 0x7fa513023400] Reference 4 >= 4 [h264 ⓐ 0x7fa513023400] error while decoding MB (...)
• 17:42
  Where to (long time) host Spring Boot Application with Data Base Backup and Linux Root Access - Lord Helmchen Newest 'ffmpeg' Questions - Stack Overflow
  I developed a small application for my father. It uses Spring Boot, MySQL and FFMPEG, which I currently installed on Linux. I want to host it, deploy it automatically, have a back up and root access for FFMPEG installation. It runs smoothly locally on Windows / Linux, now I want to host it somewhere. What I would like to have: Ease of deployment: I got experience in adminstration of linux root servers, but I look for something easy to integrate and maybe automatically deploy it from Github or Gitlab Backup: I want to backup the database ideally to another (...)
• 09:54
  drawtext with ffmpeg python - Wolf Wolf Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to add a text to a video using ffmpeg and python. I tried to do this in the following ways, but it didn't work. first ( ffmpeg .input(in_video) .filter('drawtext', fontsize=30, fontfile=r"D:\\projects\\python\\editor_bot\\downloads\\Candara.ttf", text='test test test.', x='if (eq(mod(t\\\\, 15)\\\\, 0)\\\\, rand(0\\\\, (w-text_w))\\\\, x)', y='if (eq(mod(t\\\\, 10)\\\\, 0)\\\\, rand(0\\\\, (h-text_h))\\\\, y)') .output(f'output-final.mp4') .run() ) second fil = (...)
• 08:12
  ffmpeg subtitles filter defaults to Helvetica instead of specified font - Vatsal Joshi Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to use a custom font in the subtitles of a video using ffmpeg, but despite my efforts, the font defaults to Helvetica. Here is the code I am using: import ffmpeg import os import tempfile def test_subtitle_font(font_path): # Simple arbitrary video and audio stream video = ffmpeg.input('color=color=black:size=640x360:duration=5', f='lavfi') audio = ffmpeg.input('anullsrc=channel_layout=stereo:duration=5', f='lavfi') # Create arbitrary temp subtitle file with (...)