18 May

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

• 19:48
  I'm trying to hide information in a H264 video. When I stitch the video up, split it into frames again and try to read it, the information is lost - Wer Wer Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to create a video steganography python script. The algorithm for hiding will be... convert any video codec into h264 lossless save the audio of the video and split the h264 video into frames hide my txt secret into frame0 using LSB replacement method stitch the video back up and put in the audio ...and when I want to recover the text, I'll save the audio of the video and split the encoded h264 video into frames retrieve my hidden text from frame0 and print the text So, this is what I can do: split the (...)
• 19:42
  Edge of text clipped a few pixels in ffmpeg - THEMOUNTAINSANDTHESKIES Newest 'ffmpeg' Questions - Stack Overflow
  Trying to make a short video of a background image with text and some background audio. It's functional, but the right side of each line of my text is always clipped a few pixels. What am I missing? Here's my python code (which includes the ffmpeg command): font_size = 100 text='Example Text Example Text \\n Example Text' font_path = 'Bangers-Regular.ttf' image_path = 'background.jpg' audio_path = 'audio.wav' duration = 15 #or whatever the audio's length is output_path = (...) --
• 18:49
  FFMPEG merge continous input stream with intermittent input stream without waiting - gian848396 Newest 'ffmpeg' Questions - Stack Overflow
  My goal is to take two audio inputs and merge them. The below works for this, however, I want a continuous output stream even when only one of the two inputs are being streamed into FFmpeg. The below only produces an output when the stdin pipe input is receiving audio. Here I have an FFmpeg child process where one input is a stream from the device's microphone, the other comes from wav audio buffers sent to the server in clips by a client. ⓐInjectable() export class AppService ffmpegProcess: ChildProcessWithoutNullStreams; constructor()  (...)
• 18:19
  ffmpeg.wasm DOMException: Failed to construct 'Worker': Script at '/814.ffmpeg.js' cannot be accessed from origin '' - Quantum Newest 'ffmpeg' Questions - Stack Overflow
  I have written a google chrome extension using local ffmpegwasm files (no need to run a server or download any ffmpegwasm files), which allows users to click an injected 'download' button under Reddit videos (via content_scripts). This was working great on ffmpegwasm v11, but since migrating to v12 (latest version) I have been unable to solve the following exception which is triggered during ffmpeg.load(): as seen in chrome's console log: DOMException: Failed to construct 'Worker': Script at 'https://www.redditstatic.com/814.ffmpeg.js' cannot be (...)
• 18:04
  FFmpeg-Python command too long because of drawtext - Xascoria Newest 'ffmpeg' Questions - Stack Overflow
  I have a FFmpeg-Python program that puts subtitles into a video, pseudocode below: for i in range(10000): video= video.filter( 'drawtext', fontfile=FONT_FILE, text=cur_string, x='(w-text_w)/2', y='(h-text_h)/2', fontsize=FONT_SIZE, fontcolor=FONT_COLOR, borderw=2, bordercolor=FONT_OUTLINE_COLOR, enable=f'between(t,i,i+1)') video.output(PATH).run() The code above gives the following error: FileNotFoundError: [WinError 206] The filename or extension is too long My questions are: (1) Is (...)
• 10:28
  How to stream lossy audio in chunks? - Adam Newest 'ffmpeg' Questions - Stack Overflow
  On the client side, I'm collecting periodically received audio slices into a circular buffer during the playback to avoid having to receive the entire file at once, only a small portion of its size. On server side I tried splitting MP3/M4A/OGG into frames, but even with ffmpeg, a gap is created in the chunk (usually at the beginning/end), which prevents me from validly concatenating them on the client side. Not even when I encoded the MP3 to PCM beforehand and then split the WAV file into MP3 chunks. Of course, split to WAV chunks there is no gap, but one slice is larger than (...) --
• 05:42
  how to merge two mp4 files (audio & video) with ffmpeg using script? [closed] - mayor Newest 'ffmpeg' Questions - Stack Overflow
  I need a script (in win 10) that will do the following thing: Retrieve the name of the directory it is in. In this directory are placed two mp4 files - video and audio separately. The files have different names. Script will merge them using ffmpeg into one mkv (ffmpeg -i ... - i ... -c copy “the name of the directory in which the script and files.mkv”) end The idea is that I put myself this script in some directory, run it and have the job done without typing the command manually. Thank (...)
• 08:55
  how to creating V210 encoder in pure c/c++ code - mans Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to implement V210 video encoding by writing the encoder by myself in c/c++ and not using any library. To achieve this, I am trying to see how I can create frame data and then use FFMPEG to put the frames in a video container using this command ffmpeg -s 1280x720 -f v210 -i frames.bin -c:v copy sample_video.mkv to create the frames.bin, I am creating a list of blocks based on the specifications that I found above. The code that I am using to pack YUV to the block is as follows: #pragma pack (push,1) class V210Block public:  (...) -- V210 video encoding
• 07:07
  Convert m3u8 file to mp4 file in React Native Expo - DRx Newest 'ffmpeg' Questions - Stack Overflow
  How can I convert m3u8 file to mp4 file in React Native Expo? I have tried to convert m3u8 file to mp4 using FFmpegKit but I have this errors: 'Cannot read property 'getLogLevel' of null' and 'Cannot read property 'ffmpegSession' of null' Also building with this package failing (Could not determine the dependencies of task ':ffmpeg-kit-react-native:compileDebugAidl'.). Is there a simple and easy way to convert m3u8 file in React Native Expo? Code I have used: import FFmpegKit from (...)

17 May

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

• 10:12
  FFMPEG - colorkey [closed] - Acnologla Newest 'ffmpeg' Questions - Stack Overflow
  i am using the following command to remove chroma key: ffmpeg -i black.png -i video.mp4 -filter_complex '[1:v]colorkey=0x70d021:0.35:0.15[ckout];[0:v][ckout]overlay[out]' -map '[out]' video-.mp4 but it results in these strange things around her original video Out video -- original video, Out video
• 15:20
  ffmpeg: Apply a time-based expression to control lowpass, highpass, aphaser, or aecho [closed] - Wes Modes Newest 'ffmpeg' Questions - Stack Overflow
  I am constructing complexFilters to procedurally generate audio with ffmpeg via fluent-ffmpeg. The interesting part of my fluent-ffmpeg complex filters look like: "filter": "volume", "options": "volume": "min(1, max(0, ((cos(PI * t * 1 / 13) * 1 + cos(PI * t * 1 / 7) * 0.5 + cos(PI * t * 1 / 3) * 0.25) + -0.5 ) * 0.75 * -1 + 0.5))", "eval": "frame" , "inputs": "track_1_output", "outputs": "track_1_adjusted" , Note that I am using an expression to determine the volume dynamically. To simplify my tests, I'm (...)
• 23:38
  play encrypted movies in vlc by decrypting them by ffmpeg "on the fly" - doctor Newest 'ffmpeg' Questions - Stack Overflow
  I would like to play encrypted movies in vlc by decrypting them by ffmpeg like below on macOS. The size of my movie is, say, 200-1000MB. (hundreds of files) My problem is that it is too slow to decrypt; it takes 5mins for 300MB movie before it starts to play. My guess is that ffmpeg first decrypts the whole content of 300MB and then VLC plays it. My question: Is it possible to play the movie "on the fly" while decrypting it? (play the decrypted chunk once it is decrypted, Not wait until the whole movie is decrypted before it plays, so that it starts to play in, say, (...)
• 22:42
  Discord Bot Freezes and Stops Sending/Receiving Audio Buffers - Nerevaine Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on a Discord bot that connects to a voice channel, listens to the audio, and sends it to a WebSocket server. Initially, everything works fine, but after some time, the bot freezes and stops sending/receiving audio buffers. After a certain period, the bot stops processing audio. There are no errors thrown, but the audio buffers stop being sent and received. Here are the key parts of the code I use to handle the connection and audio processing: let count = 0; await entersState(connection, VoiceConnectionStatus.Ready, 30000); const player = (...)
• 22:10
  Making a video with opencv and ffmpeg. How to find the right color format? - luc Newest 'ffmpeg' Questions - Stack Overflow
  I have a webcam video recorder program built with python, opencv and ffmpeg It works ok except that the color of the video is more blue than the reality. The problem seems to come from color format of images. It seems that OpenCv is giving BGR images and ffmpeg+libx264 is expecting YUV420p. I've read that YUV420p correspond to YCbCr. opencv has no conversion from BGR to YCbCr. It only has a conversion to YCrCb. I have made some searchs and tried different alternatives to try converting opencv image to something that could be ok for (...)
• 21:33
  Persistent AbortError During Reconnection Attempts in Discord Bot - Nerevaine Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on a Discord bot that connects to a voice channel, listens to the audio, and sends it to a WebSocket server. Initially, everything works fine, but after some time, when I try to reconnect after losing the connection, I encounter `AbortError` repeatedly. Despite several attempts to handle this error, the problem persists. The error occurs during the reconnection attempts. Here is the error message I keep receiving: Attempting to reconnect: Try 1 of 5Reconnect attempt 2 failed: AbortError: The operation was abortedat EventTarget.abortListener (node:events:1008:14)at (...)
• 14:16
  Burning subtitles into video with ffmpeg with specific margin not working - Anthony Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to build a tool where people can position their subtitles on an HTML5 video and then I will burn the subtitles into the video for them. I can easily get the position of the subtitles, in whatever format I need, that's easy. However, no combination of values that I feed to ffmpeg are working. My holy grail is an x and y offest (aka offset 5% from the left, 10% from the bottom, in terms of video height/width). To achieve this, I would like the subtitles to start in the very bottom-left corner. ffmpeg -y -i english.mp4 -vf (...)
• 10:00
  What are all of the file extensions supported by FFmpeg - zjevander Newest 'ffmpeg' Questions - Stack Overflow
  How would I go about getting a list of all the file extensions supported by FFmpeg for use in an ExtensionFilter used by FileChooser in JavaFX? I am familiar with the "-codecs" and "-formats" options from FFmpeg, but these list the format and codec names which do not necessarily coincide with their file extensions. e.g. (partial output from "ffmpeg -formats") D aac raw ADTS AAC (Advanced Audio Coding) DE ac3 raw AC-3 E matroska Matroska parsing aac and ac3 from the output of ffmpeg would work fine to create file extensions for those (...)
• 09:28
  Convert a bash script to Windows bat script [closed] - gyandoo Newest 'ffmpeg' Questions - Stack Overflow
  I have a bash script, now I need to convert it to bat. What the script does is based on the shortcut the script checks the audio codec and video codec using ffprobe and then loops through all the files in the folder to convert the file(s) using the presets based on which one the shortcut calls. It also limits the processor usage before running ffmpeg. Here's the script: #!/bin/sh FILES="/home/red/Downloads/to_convert/*" to_convert="/home/red/Downloads/to_convert" TYPE="$1" #echo "$TYPE" if [ -e '/tmp/convert.txt' ]; then echo (...)
• 03:46
  ffmpeg: Apply a time-based expr to control intensity of lowpass, highpass, aphaser, or aecho [closed] - Wes Modes Newest 'ffmpeg' Questions - Stack Overflow
  I am procedurally constructing complexFilters for ffmpeg via fluent-ffmpeg. My fluent-ffmpeg complex filters look like: "filter": "volume", "options": "volume": "min(1, max(0, ((cos(PI * t * 1 / 13) * 1 + cos(PI * t * 1 / 7) * 0.5 + cos(PI * t * 1 / 3) * 0.25) + -0.5 ) * 0.75 * -1 + 0.5))", "eval": "frame" , "inputs": "track_1_output", "outputs": "track_1_adjusted" , Note that I am using an expression to determine the volume dynamically. Here I'm testing on the command line, to understand the (...)

16 May

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

• 05:18
  Output file not specified [closed] - Rich Madrid Newest 'ffmpeg' Questions - Stack Overflow
  I have been messing around with ffmpeg working on basic mkv to mp4 conversions the last couple of days on my Mac and Windows computers. Mac was easier buy my windows desktop has a much faster OS so I wanted to do some conversions on it tonight. Got ffmpeg installed and working. After having some issues with the command prompt not finding the directory, I solved that with the following basic code to convert an mkv file to an mp4 for me: ffmpeg -i "C:\\Users\\Computer\\videos\\decade.mkv" "C:\\Users\\Computer\\Videos\\RJ videos\\Complete\\decade.mp4" I moved on to wanting to scale (...)
• 05:54
  fluent-ffmpeg use without installation ffmpeg in Window [closed] - Vishal Kumar Newest 'ffmpeg' Questions - Stack Overflow
  can I use fluent-ffmpeg library without installation of FFMPEG in my window PC. I try to use fluent-ffmpeg library without installation of ffmpeg in my PC so i am not able to mux audio with video file . so it is compulsory to install ffmpeg first in local sysytem ?
• 20:42
  LL-HLS (CMAF/fMP4) minimize latency with FFplay - DanielB6 Newest 'ffmpeg' Questions - Stack Overflow
  How do I minimize latency when streaming LL-HLS (CMAF/fMP4) via FFplay? I configured a live video stream which is broadcast from a media server using LL-HLS. I see the following results: HLS.js: ~2 seconds behind the source FFplay (./ffplay "https:////playlist.m3u8"): ~8 seconds behind the source FFplay (./ffplay -fflags nobuffer -flags low_delay -strict experimental "https:////playlist.m3u8"): ~5 seconds behind the source My goal is to achieve what HLS.js can achieve in a browser, ~2 seconds behind the (...)
• 17:34
  Generating timestamps in webm transport stream with ffmpeg - Vlad Feinstein Newest 'ffmpeg' Questions - Stack Overflow
  I am recording screen capture of my Electron app to a file, as suggested here: Save captured video to file in Electron It works great, but the file is a “transport stream”. I can play it in Chrome browser, but can’t adjust the time slider. The suggestion was to use ffmpeg to post-process the file. The simplest, straight-forward command I found is: ffmpeg -fflags +genpts -i in.webm out.webm I thought that this simply generates timestamps. However, the out.webm file is 15 times smaller than in.webm! I don’t see any change in the quality. The downside is - the (...)
• 18:44
  How do I configure codec parameters for a RTSP stream? - Kermit Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to stream a network camera source into /dev/video0. However, all attempts keep telling me I have set incorrect codec parameters. Any suggestions? # works ffplay rtsp://admin:passwordⓐ172.16.0.184:554/live Then trying any of these to feed into /dev/video0 (valid from list of ls /dev/video*): ffmpeg -rtsp_transport tcp -i "rtsp://admin:passwordⓐ172.16.0.184:554/live" -c:v rawvideo -pix_fmt yuv420p -f v4l2 /dev/video0 Results in ffmpeg version 5.1.4-0+rpt3+deb12u1 Copyright (c) 2000-2023 the FFmpeg developers built with gcc 12 (...)
• 16:21
  C# server problem with FFmpeg Visual Studio 2022 - seanofdead Newest 'ffmpeg' Questions - Stack Overflow
  Hello everyone I've spent countless hours on my server I'm trying to create that will share video from one stream to another client computer. That is the goal anyway. I'm using Visual Studio 2022 most recent update. Currently this is my code using System; using System.IO; using System.Net; using System.Net.Sockets; using System.Threading.Tasks; using FFmpeg.AutoGen; using NLog; public class VideoStreamServer private const int Port = 5000; private TcpListener server; private FFmpegVideoEncoder encoder; private (...) --
• 14:02
  PHP/ffmpeg (Windows 7): - Permission Denied. Tried everything, but still doesn't work - user365465 Newest 'ffmpeg' Questions - Stack Overflow
  I have a command-line PHP script that, when given the folder name as an argument when executing the script, will find all images in said folder and resize them using FFmpeg. Problem is, I always get a Permission Denied error in FFmpeg when it attempts to get at the files within the folder. This is while being on Windows 7. The big problem is that I've tried every solution that keeps popping up on the interwebs when I search for how to fix it. I've changed the settings in Avast!, did the attrib command (both as normal and "Run as Administrator") to unmark as read-only, (...)
• 12:51
  How to stop ffmpeg remotely? - Adam Newest 'ffmpeg' Questions - Stack Overflow
  I'm running ffmpeg on another machine for screen capture. I'd like to be able to stop it recording remotely. FFMPEG requires that q is pressed to stop encoding as it has to do some finalization to finish the file cleanly. I know I could kill it with kill/killall however this can lead to corrupt videos. Press [q] to stop encoding I can't find anything on google specifically for this, but some there is suggestion that echoing into /proc//fd/0 will work. I've tried this but it does not stop ffmpeg. The q is however shown in the terminal (...)
• 10:24
  how to concat multiple files using ffmpeg - user3189881 Newest 'ffmpeg' Questions - Stack Overflow
  I want to concat multiple files using ffmpeg. I have few video files, few audio files, few images and few text files. I have to concat all the files one by one. Now, I am doing on video files like this: For the videos, first I converted both the video into same resolution using this: C:/FFmpeg/bin/ffmpeg -i E:/xampp/htdocs/ffmpeg_test/v1.mp4 -f lavfi -i anullsrc -vcodec copy -acodec aac -shortest video_with_silence.mp4 Then this command: C:/FFmpeg/bin/ffmpeg -i E:/xampp/htdocs/ffmpeg_test/output3.mp4 -i E:/xampp/htdocs/ffmpeg_test/output2.mp4 (...)
• 06:54
  ffmpeg Unrecognized option 'preset' [closed] - Lalaluye Newest 'ffmpeg' Questions - Stack Overflow
  Hello I just recently upgraded ffmpeg from 4.3.1 to 7.0 and getting the following error: my command is ffmpeg -y -f image2pipe -framerate 24 -i pipe: -c:v libx264 -preset veryfast -crf 29 -pix_fmt yuv420 and getting the below error: 16 May 2024 06:43:28,979 [DEBUG] testIntent (pool-7-thread-3) ffmpeg built with gcc 7 (GCC) 16 May 2024 06:43:28,979 [DEBUG] testIntent (pool-7-thread-3) configuration: --prefix=/local/p4clients/pkgbuild-JklBW/workspace/src/FFmpeg/build/private/install 16 May 2024 06:43:28,979 [DEBUG] testIntent (pool-7-thread-3) ffmpeg (...)
• 03:29
  How FPS reduction for H264 without transcode? [duplicate] - Александр А Newest 'ffmpeg' Questions - Stack Overflow
  There is a USB camera that sends H264 frames with a frequency of 30 fps in a resolution of 1920x1080, GOP size 30 or 60 (1 or 2 I frame per second depending on the camera and only P-frames), which requires throughput of about 6 mbit/s. It is necessary to reduce this to no more than 2 mbit/s. All this is done on a weak ARMv7, so the option of transcoding is extremely resource intensive, especially considering that I did not find how to do it as a GPU Mali (NanoPi Neo Core). Given that the basic functionality is performed on the framework ffmpeg, is it possible to reduce the frame (...)

15 May

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

• 22:11
  avpriv_h264_has_reorder_num_frame error on av_send_packet - KaisoHHH Newest 'ffmpeg' Questions - Stack Overflow
  I'm facing the error in the title which crashes my thread. int decode(AVPacket* pPacket) int count = 0; int response = avcodec_send_packet(_pCodecContext, pPacket); while(response >= 0) AVFrame* pFrame = av_frame_alloc(); response = avcodec_receive_frame(_pCodecContext, pFrame); This is the general structure of where I'm decoding the video into frames. I do use seek_frame to change position around avstream to get different frames with this: avformat_seek_file(_pFormat, -1, INT64_MIN, location, INT64_MAX, (...)
• 21:22
  ffmpeg: PNGs to mp4 video is strange scaled quicktime - v_b Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to create a video from multiple PNG files. The files contain an animation of a line. However, the output MP4 video looks really strange, as if the content is stretched or scaled. Below, you can see screenshots of one of the PNG files and the resulting video file. Some additional information: I am on a MacPro M3 w. latest MacOs updates. The images have transparent backgrounds. Command: ffmpeg -framerate 30 -pattern_type glob -i "*.png" -s:v 1600x800 -pix_fmt yuv420p -c:v libx264 result.mp4 Example PNG file: PNG (...) -- , ,
• 20:06
  How do I make my discord.py bot play a sound effect? - Kronik71 Newest 'ffmpeg' Questions - Stack Overflow
  My bot is supposed to be some sort of jeopardy quiz show type of bot. /joinvc makes the bot connect to the call, however, I cant seem to make the bot make noise when its in a vc. Here's some of the code: ⓐinteractions.slash_command( name="press", description="Press the button" ) async def press(ctx: interactions.ComponentContext): await ctx.send(f"ctx.author.mention has pressed the button") vc = ctx.author.voice.channel player = vc.create_ffmpeg_player('audiopath', after=lambda: print('done')) player.start()  (...)
• 18:32
  Using FFMPEG: How to do a Scene Change Detection? with timecode? - Mozart Newest 'ffmpeg' Questions - Stack Overflow
  Based on this article it seems that it is possible to use FFMPEG to detect scene change in videos: http://www.luckydinosaur.com/u/ffmpeg-scene-change-detector Now I have a video that displays a book text and when the text (word or sentence) is spoken it gets highlighted. Something like this audio book: https://youtu.be/lA7L6ZNVKjc I need to know the timestamp when the text gets highlighted (hence scene change), this will allow me to add timestamp tags on my youtube video, so it becomes easier for listeners to navigate through the audiobook. What is (...)
• 12:27
  Is there a way to concatenate mp4 video files in ffmpeg without video resolution switching? [closed] - Micery999 Newest 'ffmpeg' Questions - Stack Overflow
  So i tried this command from windows (echo file 'first file.mp4' & echo file 'second file.mp4' )>list.txt ffmpeg -safe 0 -f concat -i list.txt -c copy output.mp4 while making a batch file Then i concatenate two video's and as soon as the one video ended. It changes resolution, then the video player started to glitch out pixel's like in vlc. Even if i typed ffmpeg -safe 0 -f concat -i list.txt -vf scale=640:360 -c copy output.mp4 Nothing (...)
• 11:49
  How to stream webcam video over RTSP using ffmpeg on Windows 10? [closed] - let me down slowly Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to stream my laptop's webcam using RTSP protocol using ffmpeg. I am trying to simulate an actual IP Camera. I have already tried different tools already including using VidGear python package, and gstreamer but could not get it working. Note: I am on Windows 10. I have tried this command: ffmpeg -f dshow -s 320x240 -rtbufsize 2147.48M -r 30 -vcodec mjpeg -i video="HD Camera" -f rtsp -rtsp_transport tcp rtsp://localhost:8554/mystream It turns on the webcam with but prints these logs to the console: ffmpeg version 7.0-full_build-www.gyan.dev Copyright (c) (...)
• 13:41
  The system cannot find the file specified with ffmpeg - Samhita vempatti Newest 'ffmpeg' Questions - Stack Overflow
  In the process of using the ffmpeg module to edit video files i used the subprocess module The code is as follows: #trim bit import subprocess import os seconds = "4" mypath=os.path.abspath('trial.mp4') subprocess.call(['ffmpeg', '-i',mypath, '-ss', seconds, 'trimmed.mp4']) Error message: Traceback (most recent call last): File "C:\\moviepy-master\\resizer.py", line 29, in subprocess.call(['ffmpeg', '-i',mypath, '-ss', seconds, (...)
• 13:16
  'ffmpeg' is not recognized as an internal or external command, operable program or batch file [closed] - Mark S. Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to convert group of images .png to video .webm on Windows 10: ffmpeg -i %03d.png output.webm But I am getting this error: 'ffmpeg' is not recognized as an internal or external command, operable program or batch file.
• 12:48
  Flutter: How to use "ffmpeg_kit_flutter" to merge videos? - Hani Kanakri Newest 'ffmpeg' Questions - Stack Overflow
  i am using "ffmpeg_kit_flutter" to merge two videos with code import 'dart:io'; import 'package:ffmpeg_kit_flutter/ffmpeg_kit.dart'; import 'package:ffmpeg_kit_flutter/abstract_session.dart'; import 'package:ffmpeg_kit_flutter/return_code.dart'; import 'package:flutter/material.dart'; import 'package:flutter_bloc/flutter_bloc.dart'; import 'package:wechat_assets_picker/wechat_assets_picker.dart'; import (...)
• 11:15
  Multiples Cameras Rttsp to HLS [closed] - Dark Dragon Newest 'ffmpeg' Questions - Stack Overflow
  Is it possible to create a media server that will have just one endpoint that will receive several requests with camera protocols, and this server must return the stream from these cameras formatted? Knowing that the front end will take these camera streams and place them in the browser I Still searching about the subject
• 12:21
  Problems with Python's azure.cognitiveservices.speech when installing together with FFmpeg in a Linux web app - Kakobo kakobo Newest 'ffmpeg' Questions - Stack Overflow
  I need some help. I'm building an web app that takes any audio format, converts into a .wav file and then passes it to 'azure.cognitiveservices.speech' for transcription.I'm building the web app via a container Dockerfile as I need to install ffmpeg to be able to convert non ".wav" audio files to ".wav" (as azure speech services only process wav files). For some odd reason, the 'speechsdk' class of 'azure.cognitiveservices.speech' fails to work when I install ffmpeg in the web app. The class works perfectly fine when I install it without ffpmeg (...)
• 08:34
  Can't show image with opencv when importing av - Flojomojo Newest 'ffmpeg' Questions - Stack Overflow
  When importing the PyAv module, I am unable to show an image with opencv using imshow() Code without the PyAv module (works as expected) import cv2 img = cv2.imread("test_image.jpeg") cv2.imshow('image', img) cv2.waitKey(0) Code with the import (doesn't work, just hangs) import cv2 import av img = cv2.imread("test_image.jpeg") cv2.imshow('image', img) cv2.waitKey(0) OS: Linux arch 5.18.3-arch1-1 #1 SMP PREEMPT_DYNAMIC Thu, 09 Jun 2022 16:14:10 +0000 x86_64 GNU/Linux Am I doing (...)
• 06:43
  adding one video after certain time and - Jaga G Newest 'ffmpeg' Questions - Stack Overflow
  I have two videos. If one video length is 42 minutes 35 seconds and another video length is 46 seconds, now I need to add this 46 second video after every three minutes 50 seconds so that the added video should be exported as a separate video. After every three minutes and 50 seconds, those 46 seconds of video should be added and a separate video should be exported. This should be done for a total of 42 minutes and 35 seconds of video. Does this happen in FFMPEG? how to add the (...)

14 May

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

• 16:10
  ffmpeg : fps drop when one -map udp output unreachable [closed] - user25041039 Newest 'ffmpeg' Questions - Stack Overflow
  I stream a video from a raspberry pi (server) to a splitscreen of 5x5 devices (clients) through an ethernet LAN. Server On the server side, I use the following ffmpeg command that : reads a video list in loop; splits it into 25 different streams; maps each stream to a device through udp. I also have several options to minimize latency and keep the different subscreens in sync. ffmpeg -loglevel repeat+level+verbose -re -copyts -start_at_zero -rtbufsize 100000k \\ -stream_loop -1 -f concat -i stream.lst -an \\ -filter_complex "\\  (...)
• 16:08
  FPS reduction for H264 [closed] - Александр А Newest 'ffmpeg' Questions - Stack Overflow
  There is a USB camera that sends H264 frames with a frequency of 30 fps in a resolution of 1920x1080, GOP size 30 or 60 (1 or 2 I frame per second depending on the camera and only P-frames), which requires throughput of about 6 mbit/s. It is necessary to reduce this to no more than 2 mbit/s. All this is done on a weak ARMv7, so the option of transcoding is extremely resource intensive, especially considering that I did not find how to do it as a GPU Mali (NanoPi Neo Core). # ./ffmpeg -hide_banner -codecs | grep h264 DEV.LS h264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: (...)
• 19:17
  "No accelerated colorspace conversion found from yuv420p to bgr24" when using OpenCV with FFMPEG on mac - Itay k Newest 'ffmpeg' Questions - Stack Overflow
  When trying to acquire a frame from a video file (I've tried several video formats) I am getting an error message "No accelerated colorspace conversion found from yuv420p to bgr24". The exact same code ran perfectly fine on a windows machine and I couldn't get it to run on a mac even after I recompiled and installed FFMPEG and OpenCV. I am using lion for my OS. Any ideas?
• 16:38
  How to move overlayed image on video in ffmpeg - hatlan Newest 'ffmpeg' Questions - Stack Overflow
  I overlayed an image on video with: ffmpeg -i video.mp4 -vf "movie=image.png[layer]; [layer]scale=1000:-1[layer2];[in][layer2]overlay=128:enable='between(t,0,20)'" -c:a copy output.mp4 By overlay=128an image moves vertically. How can I move an image horisontally too?
• 17:15
  Merge videos on computer automatically - Skyturkish Newest 'ffmpeg' Questions - Stack Overflow
  I have some videos regularly downloaded to my computer, these are short videos, around 10-15 seconds each. I usually use https://online-video-cutter.com/merge-videos to merge them, and it serves my purpose well. I just drag and drop the videos I want and hit the download button without any additional steps. My goal is to automate this process, so I thought I could merge the videos locally on my computer using ffmpeg. I've tried with JavaScript libraries like ffmpeg-static and ffmpeg-fluent, but I couldn't get the desired result; I keep encountering an error. What I (...) -- https://online-video-cutter.com/merge-videos
• 15:35
  Getting "unable to decode APP fields" while playing USB webcam stream through ffplay - Syed Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to play USB Webcam stream(not sure in which format it is..) using ffplay in windows. I can see the video without any issue, But I am keep getting below error in console. ffplay.exe -f dshow -i video="Logitech HD Webcam C615" -loglevel debug [mjpeg ⓐ97a118cc80] unable to decode APP fields: Invalid data found when processing input check logs for more details Do I really need to worry about this error? Or any filter that I need to provide in command to get ride of this error . Note: I tried to save stream to a file using (...) -- check logs for more details
• 11:48
  How to batch process with ffmpeg script, but do each step in a loop instead of two stages - Matt Newest 'ffmpeg' Questions - Stack Overflow
  I'm a novice script editor. I convert MOV/AVI video files to MP4 format using a script with ffmpeg and then move the files after processing: for f in *.mov; do ffmpeg -y -i "$f" "$f%.mp4"; done mv -f *.mov /Users/me/Videos/mov mv -f *.MOV /Users/me/Videos/mov mv -f *.avi /Users/me/Videos/avi mv -f *.AVI /Users/me/Videos/avi Currently the script converts all videos, then moves them all to the other folders. Please how can the script be adjusted so that each video is moved immediately after processing (instead of waiting until all are complete)? (...)
• 11:37
  Seeking Ideas: How Can I Automatically Generate a TikTok Video from a Custom Song Using C# [closed] - Jamado Newest 'ffmpeg' Questions - Stack Overflow
  Im creating a c# program which creates a video of the from a song and posts it on tiktok. Right now my program Uses spleeter to split the song into stems uses a script of GitHub to create waveform images of the stems I want my end video to look like this: https://vm.tiktok.com/ZMM7CDmUt/ - only one song will play per video https://vm.tiktok.com/ZMM7Xdw8b/ https://vm.tiktok.com/ZMM7CcGtE/ - no webcam or that hitting animations basically I want the stems of the songs to be placed on top of a FL studio timeline, synced to the song, (...) -- https://vm.tiktok.com/ZMM7CDmUt/, https://vm.tiktok.com/ZMM7Xdw8b/, https://vm.tiktok.com/ZMM7CcGtE/, https://gist.github.com/Neurogami/aeed8693f7ac375d5e013b8432d04d3f
• 04:04
  Why every audio part is louder in FFmpeg when I join them in one audio? - Volodymyr Bilovus Newest 'ffmpeg' Questions - Stack Overflow
  I trying to make dubbing for audio. I have original audio track and I want to put translated audio parts on top of the original. translated audio 100% vol: --p1--- ---p2-- -----p3--- --p4-- original audio 5% vol: ----------------------------------------- Here is my FFmpeg command with filter_complex ffmpeg -i video_wpmXlZF4XiE.opus -i 989-audio.mp3 -i 989-audio.mp3 -i 989-audio.mp3 -i 989-audio.mp3 \\ -filter_complex "\\ [0:a]loudnorm=I=-14:TP=-2:LRA=7, volume=0.05[original]; \\ [1:a]loudnorm=I=-14:TP=-2:LRA=7, adelay=5000|5000, volume=1.0[sent1]; (...) --
• 02:59
  ffmpeg problem video duration of an hour and a half - Bruno Munné Newest 'ffmpeg' Questions - Stack Overflow
  When start record i call an api /start-record which does: const ffmpeg = spawn("ffmpeg", [ "-i", rtsp, "-c:v", "copy", "-an", "-f", "flv", `$filename.flv`, ]); ffmpegProcesses[rtsp] = process: ffmpeg, filename, ; When stop the record i call an api /stop-record which does: ffmpegProcesses[rtsp].process.kill("SIGKILL"); ffmpegProcesses[rtsp].process.on("exit", async () => const ffmpeg = spawn("ffmpeg", [ "-i", `$filename.flv`, "-c:v", "libx264", "-preset", "fast",  (...)

13 May

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

• 02:18
  How to encode mp4 so that Apple devices can stream VP9 encoded Videos via fmp4 HLS? [closed] - Leon S Newest 'ffmpeg' Questions - Stack Overflow
  The question is in the title... I have not figured it out, obviously Youtube has achieved that, but how could i do it in my own app so that i can effectively stream vp9 encoded content in my app. Would be great to get a solution, maybe some ffmpeg settings or something like that? I know that it is officially not supported, but everywhere i look they say that it is still possible, and even "quite easy", e.g. here: https://www.streamingmedia.com/Articles/ReadArticle.aspx?ArticleID=133907 Trief multiple fmp4 encodings so far for vp9 but neither my app player nor safari (...) -- https://www.streamingmedia.com/Articles/ReadArticle.aspx?ArticleID=133907
• 21:33
  How to fix "Cannot find a valid font for the family Sans' while adding text on image using react-native-ffmpeg - coffee Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to add text on image using the code below RNFFmpeg .execute(`-y -i $input -vf "drawtext=text='Hello World':fontcolor=white:fontsize=75:x=0:y=0" $output`); I am not using any custom font but still get this error. Error: [Parsed_drawtext_0 ⓐ 0x7f87a1ce40] Cannot find a valid font for the family Sans index.js:115 [AVFilterGraph ⓐ 0x7f6765e760] Error initializing filter 'drawtext' index.js:115 [AVFilterGraph ⓐ 0x7f6765e760] with args 'text=Hello World:fontcolor=white:fontsize=75:x=0:y=0' index.js:115 [AVFilterGraph (...)
• 20:47
  Nix package: Pass build flag --extra-cflags to ffmpeg at compile time - catleeball Newest 'ffmpeg' Questions - Stack Overflow
  I'm a little inexperienced with Nix and NixOS and am struggling a bit with this ffmpeg source build. Any advice is appreciated! Goal Build ffmpeg from source with --extra-cflags="-pipe -O3 -march=znver3 -ffat-lto-objects", ideally using a flake or overlay or similar so that I can build off the existing ffmpeg nix package and maybe even reproducible builds. Attempts I've been trying to follow different advice I've seen online, but looking at ffmpeg in nixpkgs, I'm not sure what I could patch or override. Since configureFlags happens inside the (...) -- ffmpeg in nixpkgs, configureFlags, this github repo
• 20:04
  D3D11 hardware screen recording with ffmpeg using Intel H264 QSV hardware encoding - Cactus Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to screen record using ffmpeg and having it all done via hardware on my Intel integrated graphics. Specs For reference, here are my specs: Windows 11 Pro Version 10.0.22631 Build 22631 Model: Dell Inc. OptiPlex 3090 Processor: 11th Gen Intel(R) Core(TM) i3-1115G4 ⓐ 3.00GHz, 2995 Mhz, 2 Core(s), 4 Logical Processor(s) Terminal: Windows Terminal using Windows Powershell In this wiki, it looked like I could use the "Windows 8+ Desktop Duplication API" to be "directly encoded by a compatible hardware encoder" — so I thought that I (...) -- wiki, page
• 15:57
  Why every audio part louder in FFmpeg while I join them in one audio? - Volodymyr Bilovus Newest 'ffmpeg' Questions - Stack Overflow
  I trying to make dubbing for audio. I have original audio track and I want to put translated audio parts on top of the original. translated audio 100% vol: --p1--- ---p2-- -----p3--- --p4-- original audio 5% vol: ----------------------------------------- Here is my FFmpeg command with filter_complex ffmpeg -i video_wpmXlZF4XiE.opus -i 989-audio.mp3 -i 989-audio.mp3 -i 989-audio.mp3 -i 989-audio.mp3 \\ -filter_complex "\\ [0:a]loudnorm=I=-14:TP=-2:LRA=7, volume=0.05[original]; \\ [1:a]loudnorm=I=-14:TP=-2:LRA=7, adelay=5000|5000, volume=1.0[sent1]; (...) --
• 15:32
  ffmpeg python error when adding subtitles - Clara Ogalla Newest 'ffmpeg' Questions - Stack Overflow
  When I run it I think there is an error with the subtitle path, but I can't solve it. The error in terminal: [Parsed_subtitles_0 ⓐ 0000019bcc509780] Unable to parse option value "UsersclaraDocumentsProyectosSubtitulossubtitulosDoctor Who - 1x05 The Keys Of Marinus - Part 6 The Keys Of Marinus_track4_spa.srt" as image size Error applying option 'original_size' to filter 'subtitles': Invalid argument [vost#0:0/libx264 ⓐ 0000019bce220480] Error initializing a simple filtergraph Error opening output (...)
• 14:12
  sending video issue whatsapp-web.js - Shahar Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to send an mp4 video as a sticker but i get an error, here's my code client.on("message", (message) => const media = MessageMedia.fromFilePath("./vid.mp4"); client.sendMessage(message.from, media, sendMediaAsSticker: true ); but I get this error handleExit(new Error('ffmpeg exited with code ' + code)); ^ Error: ffmpeg exited with code 1: pipe:0: Invalid data found when processing input Cannot determine format of input stream 0:0 after EOF Error marking filters as finished Conversion (...)
• 11:08
  "fixing" RTL texts from logical to visual, before embedding in video as subtitles with ffmpeg - Berry Tsakala Newest 'ffmpeg' Questions - Stack Overflow
  I'm searching for the correct way to pre-process my subtitles files before hard-coding them into video clips. Currently, ffmpeg does not process RTL (right-to-left) languges properly; I have detailed the problem here: https://superuser.com/questions/1679536/how-to-embed-rtl-subtitles-in-a-video-hebrew-arabic-with-the-correct-lan However, there could be 2 programmatic solutions: adding certain unicode control characters can fix (or partially fix) the text, which is then fed into ffmpeg, giving good results. character 0x200F at the end of a hebrew (...) -- unicode control characters
• 09:15
  How do I add environment variables to path in python? - JustThisWeeb Newest 'ffmpeg' Questions - Stack Overflow
  I made a python script to install FFmpeg and add it to path in Windows, but it seemed to have no effect at all. It doesn't give me any errors or anything. It literally just does nothing at all. This was the code I used: os.environ["Path"] += f"os.getcwd()/ffmpeg-7.0-essentials_build/bin" os.environ.update() and I tried several iterations of "path" including "PATH", "Path", "path" and none of them made a difference. I also tried making a new variable: new_environ = os.environ["Path"] + (...)
• 06:11
  Getting "TypeError: must be real number, not NoneType" whenever trying to run write_videofile to a clip in moviepy - Sato Newest 'ffmpeg' Questions - Stack Overflow
  Example code: from moviepy.editor import * clip = VideoFileClip('video.mp4') clip.write_videofile('video2.mp4', fps=30) After showing the following messages, showing that the video is being built and written, Moviepy - Building video video2.mp4. Moviepy - Writing video video2.mp4 The following error message occurs: Traceback (most recent call last): File "", line 1, in File "C:\\Users\\User\\Anaconda3\\lib\\site-packages\\decorator.py", line 232, in fun return caller(func, *(extras + args), **kw) File (...)

12 May

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

• 16:36
  Adding Dynamic Progress Bar to FFMpeg Video Output (Mac) [closed] - saurav tripathi Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to add a dynamic progress bar to the bottom of a video using ffmpeg on my Mac. Here's the command I'm currently using: ffmpeg -i "/Volumes/hard-drive/Auto-pilot-video/upload-ready-video/one-two-ka-four.mp4" -filter_complex \\ "[0:v]drawbox=y=ih-20:color=yellowⓐ0.5:width=iw*(t/606.15):height=20:t=fill[v]" \\ -map "[v]" -map 0:a -c:a copy -preset fast output.mp4 Question: As you can see in the image right now, it just a fixed yellow bar at the bottom of the screen. But instead of just fixed at bottom I want a dynamically moving bar at (...) --
• 14:32
  I am unable to decode the frames in python using ffmpeg [closed] - Saail Chavan Newest 'ffmpeg' Questions - Stack Overflow
  import pylwdrone import cv2 import numpy as np # Initialize the LWDrone object drone = pylwdrone.LWDrone() # Start the video stream for packet in drone.start_video_stream(): try: # Print the size of the frame data print("Packet frame bytes size:", len(packet.frame_bytes)) # Print a portion of the frame data (first 100 bytes) print("First 100 bytes of frame data:", packet.frame_bytes[:100]) # Convert the frame data to numpy array frame = np.frombuffer(packet.frame_bytes, dtype=np.uint8) # Get the (...)
• 18:45
  piping data into an ffmpeg subprocess. Why does write() get stuck? [closed] - Tebyy Newest 'ffmpeg' Questions - Stack Overflow
  It displays the number of frames at the beginning and shows that there are over 300, but when I count all the frames in the loop, the last one I see is 53, and then it only displays the value of 'ret', which is always true. I'm wondering what could be causing this issue of not reading all the frames, resulting in the file not being closed after reading. From what I've read, 'ret' should return false when there are no more frames to read, but because it's not reading all the frames, this isn't happening. Does anyone have any idea what could be (...) -- Tested Video
• 11:28
  Pyzam gives an error, Pyzam does not work. [red]Error: ffmpeg file not found in $PATH[/red] [duplicate] - Да не знаю я Newest 'ffmpeg' Questions - Stack Overflow
  I wanted to make a program that defines music, well, like shazam. I came across Pyzam. I tried it, it doesn't work. Returns the error: [red]Fatal: ffmpeg not found on $PATH[/red] to the command: pyzam -- input mando.mp3. There is a mando.mp3 file in the folder where I run the program. I write the command on the command line. Windows 10. FFmpeg is available on disk C from the official website.
• 14:11
  How to apply --speed flag for ffmpeg-kit in React Native (Expo)? - Michota Newest 'ffmpeg' Questions - Stack Overflow
  Where do i place speed flag? Currently my plugins look like this "plugins": [ [ "ⓐconfig-plugins/ffmpeg-kit-react-native", "package": "min-gpl" ] ], I use expo sdk 51. I've tried placing it next to package name, but it didn't work. -- speed
• 12:08
  python ffmpeg configuration for command - RobyJ Newest 'ffmpeg' Questions - Stack Overflow
  I want to convert mp3 files to mp3 but with my settings. Could someone help me to create python code or a command for cmd to perform such action with ffmpeg? I have hundreds of mp3 files so I need to automate it. Settings are in below picture. I tried myself to configure it, but I had problems with finding in ffmpeg docs information about bit rate mode and quality settings. --
• 10:37
  FFmpeg image swipe animation - zetrabit Newest 'ffmpeg' Questions - Stack Overflow
  I want to animate with ffmpeg as in the picture. The animation must be 3 seconds long. Zoom in for 0.5 seconds at the beginning of the video Swipe left for 1 second Swipe right for 1 second Zoom out for 0.5 seconds. I have a 3 images. Is this possible? i'am tryging ffmpeg (python or php or msdos) >Example image -- Example image
• 09:47
  ffmpeg - I want to concat multiple videos (front / rear) with overlay and one second delay - Andrej Florjančič Newest 'ffmpeg' Questions - Stack Overflow
  I try to write bash script to concat front and rear video files with delay 1 second at start and overlay rear over front. I wrote the following bash script: # Define the output file output_file="$VIDEO/final_output_$choice.mp4" # Collect and sort the video files front_files=( $(ls *_F.MP4 | sort) ) rear_files=( $(ls *_R.MP4 | sort) ) # Create a file to hold ffmpeg input commands and filter scripts input_list="input_files.txt" filter_script="filter_complex.txt" inputs="" # Clear the input list and filter script files echo "" > (...)
• 00:27
  Error loading trimmed video produced by FFMPEG - Bryan Carty Newest 'ffmpeg' Questions - Stack Overflow
  I've been trying to trim a video using FFMPEG within some javascript code. The code executes without throwing any errors. try const command = `ffmpeg -i $ CROPPING_DIR + CROPPED_VIDEO_PREFIX + id + ".mp4" -ss 00:00:04 -to 00:00:06 -c copy $ CROPPING_DIR + TRIMMED_VIDEO_PREFIX + id + ".mp4" `; console.log(command); const stdout, stderr = await exec(command); return "NA"; catch (error) console.error("Error executing ffmpeg command:", error); In VsCode, I am unable to view the (...)