15 mai

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

• 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
• 12:27
  Is there a way to concatenate mp4 video files in ffmpeg without video resolution switching? - 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 (...)
• 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 (...)
• 11:49
  How to stream webcam video over RTSP using ffmpeg on Windows 10? - 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) (...)
• 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 mai

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

• 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
• 16:08
  FPS reduction for H264 - 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: (...)
• 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
• 16:10
  ffmpeg : fps drop when one -map udp output unreachable - 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 "\\  (...)
• 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 mai

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

• 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