5 juin

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

• 04:15
  PyQt6 6.7.0 - How to fix error: No QtMultimedia backends found - Belleroph0N Newest 'ffmpeg' Questions - Stack Overflow
  Problem on Windows 10 and Windows 11 using Anaconda. Here is the full error message for PyQt6=6.7.0: No QtMultimedia backends found. Only QMediaDevices, QAudioDevice, QSoundEffect, QAudioSink, and QAudioSource are available. Failed to initialize QMediaPlayer "Not available" Failed to create QVideoSink "Not available" Installed PyQt6 using a requirements file: PyQt6 PyQt6-WebEngine requests pyserial pynput Here are a couple things I tried: Reroll version back to PyQt6=6.6.1. This results in an error as well: ImportError: DLL (...) -- issue
• 03:23
  How to save last 30 seconds of video in py - Mateus Coelho Newest 'ffmpeg' Questions - Stack Overflow
  I want the last 30 seconds to be recorded every time I click enter and sent to the cloud. for example, if I click at 00:10:30, I want a video that records from 00:10:00 to 00:10:30 and if I click in sequence at 00:10:32, I need another different video that in its content is recorded from 00:10:02 to 00:10:32. I think I have a problem where I will always end up recovering from the same buffer in the last 30 seconds. Is there any approach so that whenever I click enter I retrieve a unique video? Is my current approach the best for the problem? Or should I use something else? import (...)

4 juin

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

• 21:58
  How to change metadata with ffmpeg/avconv without creating a new file? - Stephan Kulla Newest 'ffmpeg' Questions - Stack Overflow
  I am writing a python script for producing audio and video podcasts. There are a bunch of recorded media files (audio and video) and text files containing the meta information. Now I want to program a function which shall add the information from the meta data text files to all media files (the original and the converted ones). Because I have to handle many different file formats (wav, flac, mp3, mp4, ogg, ogv...) it would be great to have a tool which add meta data to arbitrary formats. My Question: How can I change the metadata of a file with ffmpeg/avconv (...)
• 15:58
  Getting FFProbe Information With Python - jesse Newest 'ffmpeg' Questions - Stack Overflow
  I've been attempting to figure this out for forever now (I'm new to programming) and I can't figure it out. I'm attempting to build a script that will test the file, and give me output from which I can get information like "Audio Format" that I can then put into the filename. However, I can't even get the script to return any file info. I've hit a wall at inserting an input file... So at this point I just need help getting it to spit out info based on the argvs I've thrown in. Hopefully I'll be able to figure out how to parse the (...)
• 15:39
  Python streamlit app (You have requested merging of multiple formats but ffmpeg is not installed. Aborting due to --abort-on-erro) error - Praveen Kumar Newest 'ffmpeg' Questions - Stack Overflow
  If you use a YT media downloading app then it downloads the YT media without asking for ffmpeg. I am making a python streamlit app using yt-dlp and when I click on download button then it shows that *ffmpeg *is not installed and the other YT media downloading websites don't ask for any software, they just want us to paste the YT link and then selection the resolution without any need of installing ffmpeg. How to make setreamlit apps like these websites? python version: 3.12.3 These libraries I have imported in my code: import os import streamlit as st import (...)
• 11:38
  Issues with Publishing and Subscribing Rates for H.264 Video Streaming over RabbitMQ - Luis Newest 'ffmpeg' Questions - Stack Overflow
  I am working on a project to stream an H.264 video file using RabbitMQ (AMQP protocol) and display it in a web application. The setup involves capturing video frames, encoding them, sending them to RabbitMQ, and then consuming and decoding them on the web application side using Flask and Flask-SocketIO. However, I am encountering performance issues with the publishing and subscribing rates in RabbitMQ. I cannot seem to achieve more than 10 messages per second. This is not sufficient for smooth video streaming. I need help to diagnose and resolve these performance (...)
• 11:15
  How to reduce the binary size for FFMPEG library for android application - Ashwin Khadgi Newest 'ffmpeg' Questions - Stack Overflow
  In my Androdi project I am using the FFmpeg library to extract a thumbnail from a particular video frame (HLS). I am able to generate the thumbnail successfully but the final APK size increase by 100+ MB, any suggestion on how to reduce the APK size? I only need the library for generating thumbnail from HLS videos. I have tried different Packages options mentioned in the FFmpeg library but no major decrease in APK size. Also any other lightweight library for generating thumbnail will also work. Any suggestion is (...) -- FFmpeg
• 11:05
  Convert pcm_s16le audio to mp3 (in php with ffmpeg/sox/...)? - Loïc Newest 'ffmpeg' Questions - Stack Overflow
  I have a bin and a cue file (CD image) and I am making a website to be able to listen to my music. I managed to split the tracks and make a (44 bytes) wav header so my browser can read the audio but the wav files are too big to be read on an unstable connection (it's 1411kbps where an mp3 would be 320kbps or lower!). At first, is there a way to convert the audio to mp3 without making a temporary file in php? Maybe ffmpeg or sox could help? Secondly, I would like to be able to satisfy partial content requests (so I can skip without loading the whole file). I have already (...)
• 08:33
  ffmpeg throwing "errorMessage": "spawn ffmpeg ENOENT" - ian Newest 'ffmpeg' Questions - Stack Overflow
  My ffmpeg function thats running as a shell command isnt working. I think its because 'ffmpeg' isnt really referring to anything. I have the ffmpeg node module in my bundle, but i dont know the execFile command is referring to it here. Im following aws-lambda-ffmpeg as an example of how to call this particular function. They are referring to 'ffmpeg' as a 64-bit linux build they created from John Vansickle's static FFMPEG builds in their gulp function. I want to know how to replace 'ffmpeg' with something that will just recognize it (...) -- aws-lambda-ffmpeg, John Vansickle's static FFMPEG builds

3 juin

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

• 18:44
  How video editor show real time preview of videos? [closed] - SWIK Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to create a simple video editor that combine two video by layering one over another, i can easily do it with ffmpeg, but I am not sure how can I make a preview of it before making final video? How video editor display preview without building them? I am looking towards create a react application.
• 18:19
  ffmpeg use shell script to make video from multiple images and one audio with specific timestamps for each image [closed] - Trojosh Newest 'ffmpeg' Questions - Stack Overflow
  I have an audio file and I have 15 images. I would like to make a video from these 15 still images. Each image may appear for different number of seconds. E.g. Image 1,2,3 will take 3 seconds each but image 4 may take 40 seconds because it is more complex. How can I use a shell script that uses ffmpeg to specify timestamp for each image and add audio to the same. Also note that the sum of timestamps of all images = running time of the audio. I looked at this question and image2 filter option from the official documentation but no luck in producing such a (...) -- image2 filter option
• 14:54
  SharedArrayBuffer is not defined & SyntheticBaseEvent - Dain Park Newest 'ffmpeg' Questions - Stack Overflow
  thank you for your help with my problem. I am using FFmpeg.wasm on Next.js to compress videos when users upload them. I then send the videos to a server and save them on AWS S3. For the client side, I'm using Next.js. To solve the error "SharedArrayBuffer is not defined", I added the following code to next.config.mjs: /** ⓐtype import('next').NextConfig */ const nextConfig = reactStrictMode: false, async headers() return [ source: '/(.*)', headers: [ key: 'Cross-Origin-Opener-Policy',  (...)
• 06:46
  ffmpeg Command in Docker with Rust Tokio Closes Warp Server Connection (curl 52 Error) - user762345 Newest 'ffmpeg' Questions - Stack Overflow
  I’m encountering an issue where executing an ffmpeg concatenation command through Rust’s Tokio process in a Docker container causes subsequent HTTP requests to fail. The error occurs exclusively after running the ffmpeg command and making immediate requests, resulting in a “curl 52 empty response from server” error with the connection being closed. Notably, this issue does not occur when running the same setup outside of Docker. Additionally, if no HTTP requests are made after the ffmpeg command, the curl 52 error does not occur. Here is the verbose curl output of my minimum reproducible (...)
• 05:47
  ffmpeg drawtext on ubuntu : ffmpeg does not change text location [closed] - Wolf Wolf Newest 'ffmpeg' Questions - Stack Overflow
  I am designing a video editor bot for Telegram. I want to use ffmpeg and I need a text to be placed on the video and change the place of the text randomly every few seconds. [This has an example on the site itself.][1] used the following command: "/home/editor/downloads/video_2023-07-10_17-53-05_7375753324605210932.mp4" -filter:v drawtext="fontsize=30:fontfile=/usr/share/hellotext=hellotext/share/World': x=if(eq(mod(t\\,30)\\,0)\\,rand(0\\,(w-text_w))\\,x):y=if(eq(mod (t\\,30 )\\, 0)\\,rand(0\\,(h-text_h))\\,y)" -codec:v libx264 -codec:a copy -preset (...)

2 juin

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

• 20:33
  ffmpeg make video from multiple images and one audio with specific timestamps for each image [closed] - Trojosh Newest 'ffmpeg' Questions - Stack Overflow
  I have an audio file and I have 15 images. I would like to make a video from these 15 still images. Each image may appear for different number of seconds. E.g. Image 1,2,3 will take 3 seconds each but image 4 may take 40 seconds because it is more complex. How can I use ffmpeg to specify timestamp for each image and add audio to the same. Also note that the sum of timestamps of all images = running time of the audio. I looked at this question and image2 filter option from the official documentation but no luck in producing such a (...) -- image2 filter option
• 14:49
  How to use the actual frame numbers in filenames using ffmpeg when extracting frames? [closed] - Joan Venge Newest 'ffmpeg' Questions - Stack Overflow
  Basically I am using ffmpeg to extract every Nth frame from a video. But the filenames appear sequentially from 1 to X. I want to use the actual frame numbers so if it's every 30th frame, then the filenames should be 0, 30, 60, etc. Is this possible? I am doing this in Python using this function: def extract_and_compress_frames(directory, frame_interval=1, crop_width=192, crop_height=108, offset_x=0, offset_y=0): for filename in os.listdir(directory): if filename.endswith(".trec"): # Construct full file path trec_path = os.path.join(directory, (...)
• 09:28
  How can I overlay multiple images with fade-in using ffmpeg? [closed] - strangerD Newest 'ffmpeg' Questions - Stack Overflow
  In the working folder, there are text1.png text2.png video.mp4 (all sizes 400x400) I would like to overlay text1 and text2 on this video.mp4 while fading them in. If it was just one image, I could make it with the code below, so I am currently researching ways to improve the code below. ffmpeg -i video.mp4 -loop 1 -i text1.png -filter_complex "[1]fade=in:st=2:d=1:alpha=1[i];[0][i]overlay=x=0:y=0:shortest=1;" output.mp4 Below is the code I created based on the manual and information I found on Google. ffmpeg -i video.mp4 -loop -i text1.png (...)
• 21:45
  File concat error using ffmpeg - user1211499 Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to concat two files using ffmpeg. I have a file input.txt where I have written file "1.mpg" file "2.mpg" and the command i am using ffmpeg -f concat -i input.txt -codec copy output.mpg but i am keep getting this error impossible to open \\1.mpg and input.txt: Invalid argument. any help will be appreciated
• 09:07
  ffmpeg - converting webm videos generated by Chrome is slow - Nuthinking Newest 'ffmpeg' Questions - Stack Overflow
  I generate webm files in two different ways. One using Chrome WebRTC MediaRecorder, the other one is using a js library which generates the webm video frame by frame (webm-writer-js). The file size of the videos generated is not that different, the fast one is 60% of the slow one but the difference in speed is 1000% Using the basic ffmpeg syntax -i input.webm output.mp4 the files created with Chrome's media recorder take in fact almost 10x time to be converted. The conversion logs differ slightly but overall look very similar to my novice eyes. On the left the fast (...) -- webm-writer-js,

1er juin

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

• 09:01
  Writing a video frame by frame using ffmpeg - Chris Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to write a video frame by frame using ffmpeg as explained here: http://zulko.github.io/blog/2013/09/27/read-and-write-video-frames-in-python-using-ffmpeg/ However, I am always getting an OSError: [Errno 22] Invalid argument. I am on Windows 7 and using Python 3.4. Here is the code: import subprocess as sp import numpy as np import time ffmpeg_bin = r'C:\\path\\to\\ffmpeg\\ffmpeg.exe' command = [ffmpeg_bin, '-y', # (optional) overwrite output file if it exists '-f', 'rawvideo',  (...) -- http://zulko.github.io/blog/2013/09/27/read-and-write-video-frames-in-python-using-ffmpeg/
• 04:41
  What is the purpose of the split filter in FFMpeg? - TheOrbitHeart Newest 'ffmpeg' Questions - Stack Overflow
  In complex filters specifically, is there a situation where it is necessary to use the split filter, rather than use the same input multiple times? For example, consider the following FFmpeg command: ffmpeg -i input.mp4 -filter_complex \\ "[0:v]hflip[out1]; \\ [0:v]boxblur=10[blurred]; \\ [out1][blurred]hstack[out]" \\ -map "[out]" output.mp4 It seems to work perfectly fine, But I saw some tutorials consistently using "split" in situations like this, where the input is split before any other filters are applied, making me wonder if there are unintended (...)

31 mai

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

• 23:08
  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 (...)
• 21:02
  AttributeError: module 'librosa' has no attribute 'output' - Aditya Kumar Newest 'ffmpeg' Questions - Stack Overflow
  I am using librosa 0.6 in anaconda and i have also installed ffmpeg but i am still getting this error the code is a = np.exp(spectrum) - 1 p = 2 * np.pi * np.random.random_sample(spectrum.shape) - np.pi for i in range(50): S = a * np.exp(1j * p) x = librosa.istft(S) p = np.angle(librosa.stft(x, N_FFT)) librosa.output.write_wav(outfile, x, sr)
• 13:28
  How should I add watermark to a video Using ReactJS - basit khan Newest 'ffmpeg' Questions - Stack Overflow
  I want to add a watermark to a video and then upload it to firebase , So if i Get the video from firebase it should be shown with watermark and also can be downlowded with watermark appended. Didn't find any solution yet for this
• 13:27
  Android FFmpeg export of the Video in SurfaceView with Pinch/Scale/Zoom/Bg Color Operation - CoderDev Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on a feature in which I need to perform some actions on the selected video from the gallery and then upload it on the Backend server, on this selected video I can pinch it to scale up/down/zoom in/out and place it anywhere on the screen (even out side the screen), just like the Instagram app. I can apply a background color which will be applied to the whole space of the outer of the video frame. After all the above changes I'm exporting the changes to the output video that will contain all the changes that I've mentioned above. I'm using the FFMpeg (...)
• 12:48
  Moviepy not updating FFmpeg Version after FFmpeg Install? - The_ Game12 Newest 'ffmpeg' Questions - Stack Overflow
  I've been toying around with MoviePy, and recently switched a project to a new computer at home to continue messing around with it. However, I tried running what I had previously written (which ran perfectly fine on the other computer) and I get this: OSError: MoviePy error: failed to read the first frame of video file ./Gameplay/minecraft- gameplay2.mp4. That might mean that the file is corrupted. That may also mean that you are using a deprecated version of FFMPEG. On Ubuntu/Debian for instance the version in the repos is deprecated. Please update to a recent (...)
• 09:58
  How to extract a frame from an INSV format 360 video using Python - Kalpesh Shinde Newest 'ffmpeg' Questions - Stack Overflow
  I have a 360 video captured with an Insta360 X3, which is in the INSV format. I would like to extract a frame from this video using Python, FFmpeg, or any other suitable tool, without using Insta360 Studio to export the video to MP4 first. Here is what I have tried so far: FFmpeg: I attempted to use FFmpeg to directly convert the INSV file to images, but I encountered errors, possibly due to the proprietary nature of the INSV format. ffmpeg -i input.insv -vf "select=eq(n,0)" -q:v 3 output.jpg This command did not work as expected and produced an error. Python (...)
• 06:40
  Can I set rotation field for a video stream with FFmpeg? - Alexander Newest 'ffmpeg' Questions - Stack Overflow
  I have a video file. I open it with MediaInfo utility and I can see a video stream in this file having attribute Rotation 90 (along with other attributes such as CodecID, bitrate etc). Now I have another video file which does not have that attribute Rotation 90, it does not have the Rotation attribute at all. Can I use ffmpeg.exe so that it produces output file with Rotation 90 attribute added and with no other changes? I don't really want to do any transform, just want to set the Rotation attribute. I've tried the -metadata option to no (...)
• 04:46
  FFMPEG in Android Kotlin - processed video should have specific resolution - Utsav Newest 'ffmpeg' Questions - Stack Overflow
  I'm recording video from both the front and back cameras and I get a PIP video and a horizontal stacked video. I need to merge both videos after that. The problem with merging is that it requires both the videos (PIP and stacked) to have the same resolution and aspect ratio. This is not the case. So the FFMPEG command being executed in code to generate both these videos needs to be modified to make the resolution and aspect ratio the same. //app -> build.gradle implementation "com.writingminds:FFmpegAndroid:0.3.2" private fun connectFfmPeg() val overlayX = (...)

30 mai

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

• 21:54
  ffmpeg - Seek to absolute time stamp in MPEG DASH segment [closed] - iBent Newest 'ffmpeg' Questions - Stack Overflow
  I need to extract short audio segments at specific time stamps from specific dash segments. I tried the following: ffmpeg -ss 00:10:00 -i segment_x.m4s -t 10 out.mp3 ss seeks relative to the segment's start time however, and not absolutely. That absolute time data is there however as ffmpeg prints it during the conversation like this: Duration: 00:10:14.01, start: 595.018667, bitrate: 7 kb/s How can I make ffmpeg extract the audio from exactly 00:10:00 to (...)
• 20:39
  Issue with adding FFMPEG to macOS path to convert mp3 to WAV in Python [closed] - AndrewLittle1 Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to use a simple program to convert a .MP3 file to a .WAV file in python: from os import path from pydub import AudioSegment src = "test1.mp3" dst = "test1.wav" # convert wav to mp3 sound = AudioSegment.from_mp3(src) sound.export(dst, format="wav") When I try to run the program in an IDE, I am getting a FileNotFoundError this is what the StackTrace looks like: RuntimeWarning: Couldn't find ffprobe or avprobe - defaulting to ffprobe, but may not work warn("Couldn't find ffprobe or avprobe - defaulting to (...)
• 07:54
  ffmpeg streaming an image failure [closed] - deonst Newest 'ffmpeg' Questions - Stack Overflow
  I am trying stream a static image on the network. Everything I have tried yet so far has failed: Examples: ffmpeg -y -stream_loop -1 -r 1 -i text2.png -vcodec libx264 -crf 17 -pix_fmt yuv420p -f mpegts udp://239.1.250.12:1234 File is generated but unplayable by VLC or any other TS capable device. ffplay complains about input frame errors but still produces a picture after a few seconds. Tried this for youtube solution as well to a local file. ffmpeg -f image2 -loop 1 -i text1.jpg -re -f lavfi -i anullsrc -vf format=yuv420p -c:v libx264 -b:v 2000k -maxrate 2000k (...)
• 22:18
  FFMPEG Concatenating videos with same 25fps results in output file with 3.554fps - Kendra Broom Newest 'ffmpeg' Questions - Stack Overflow
  I created an AWS Lambda function in node.js 18 that is using a static, ver 7 build of FFmpeg located in a lambda layer. Unfortunately it's just the ffmpeg build and doesn't include ffprobe. I have an mp4 audio file in one S3 bucket and a wav audio file in a second S3 bucket. I'm uploading the output file to a third S3 bucket. Specs on the files (please let me know if any more info is needed) Audio: wav, 13kbps, aac (LC), 6:28 duration Video: mp4, 1280x720 resolution, 25 frame rate, h264 codec, 3:27 duration Goal: Create blank video to (...)
• 16:50
  ffmpeg exited with code 1: Input/output error - Alessandro1918 Newest 'ffmpeg' Questions - Stack Overflow
  On my backend Node server, I am trying to read a stream from an online radio station, and save the audio as a file in my computer. As streams don't have start/end, I'm choosing to record an arbitrary value of 5 seconds. For this problem, I'm using the fluent-ffmpeg npm package for ffmpeg wrapper. Also, the ⓐffmpeg-installer/ffmpeg npm package to point to the directory of my local ffmpeg binary. As stream input, I'm reading from 89 FM - A Rádio Rock, a radio from São Paulo, BR, with the stream available at (...) -- fluent-ffmpeg npm package, @ffmpeg-installer/ffmpeg npm package, 89 FM - A Rádio Rock, http://26593.live.streamtheworld.com/RADIO_89FMAAC.aac
• 16:36
  How to process a video to mp4 with ffmpeg for quality and compatibility? - Luis A. Florit Newest 'ffmpeg' Questions - Stack Overflow
  I am beginning to be more serious about video. I am processing my videos with ffmpeg in a fully updated Linux into mp4 to use it in HTML5 directly. Now, I have old AVI videos that I want to convert to mp4 with ffmpeg for use with HTML5. In particular, I have this one: http://luis.impa.br/photo/1101_aves_ce/caneleiro-de-chapeu-preto_femea_Quixada-CE-110126-E_05662+7a.avi (I know, terrible quality... sorry). According to ffprobe: Duration: 00:01:35.30, start: 0.000000, bitrate: 1284 kb/s Stream #0:0: Video: mpeg4 (Simple Profile) (DX50 / 0x30355844), yuv420p, (...) -- http://luis.impa.br/photo/1101_aves_ce/caneleiro-de-chapeu-preto_femea_Quixada-CE-110126-E_05662+7a.avi
• 15:07
  FFMPEG Streaming using RTMP - desto Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to create a stream using ffmpeg to send a video to a Red5 Server. I've already managed to do this using this command: ffmpeg -re -y -i "Videos\\Video1.mp4" -c:v libx264 -b:v 600k -r 25 -s 640x360 -t 40 -vf yadif -b:a 64k -ac 1 -ar 44100 -f flv "rtmp://192.168.0.12/live/videostream" My problem is, when ffmpeg finishes encoding the video, it stops the stream, and thus cuts the video short for 5-10 seconds (for short videos), but this gets worse on larger videos. Is there a way to stop this behavior? I was trying to add a blank 10 (...)
• 14:47
  Convert 2 channel mp4 to each mono wav file using FFMPEG or Python code - Harish Alwala Newest 'ffmpeg' Questions - Stack Overflow
  I am new to audio files and its codecs. I would like to convert a 2 channel mp4 file to a single mono wav files. My understanding is a when I say 2 channel, it stores speech coming from each microphone in a separate channel. And when I split the channels to each individual mono wav files, I get speech of each microphone. My intension here is to get the speech from each channel and convert them to text. This way I can set the name of the speaker based on channel. I tried with ffmpeg and python code as well, unfortunately I get two files with same content. Looking (...) -- ,
• 14:19
  how to generate video thumbnail in node.js? - paynestrike Newest 'ffmpeg' Questions - Stack Overflow
  I am building an app with node.js, I successfully uploaded the video, but I need to generate a video thumbnail for it. Currently I use node exec to execute a system command of ffmpeg to make the thumbnail. exec("C:/ffmpeg/bin/ffmpeg -i Video/" + Name + " -ss 00:01:00.00 -r 1 -an -vframes 1 -f mjpeg Video/" + Name + ".jpg") This code is coming from a tutorial from http://net.tutsplus.com/tutorials/javascript-ajax/how-to-create-a-resumable-video-uploade-in-node-js/ the code above did generate a jpg file but it's not a thumbnail but (...) -- http://net.tutsplus.com/tutorials/javascript-ajax/how-to-create-a-resumable-video-uploade-in-node-js/
• 13:39
  How to compile ffmpeg.dll [closed] - jdauthre Newest 'ffmpeg' Questions - Stack Overflow
  I would like to compile a ffmpeg.dll dynamic link library which includes the full range of codecs, but when I search for guides I can only find resouces to create ffmpeg.exe. Can anyone point to any resources. Thank you in advance.
• 05:18
  Duplicate class I'm already using ffmpeg_kit_flutter_audio in my code: 5.1.0-LTS for audio conversion video_editor: ^2.1.0 - Rafael Dos Santos Coladelo Newest 'ffmpeg' Questions - Stack Overflow
  I'm already using in my code: ffmpeg_kit_flutter_audio-5.1.0-LTS for audio conversion, when you put the video_editor: ^2.1.0 general the error, is there any way to solve it? FAILURE: Build failed with an exception. What went wrong: Execution failed for task ':app:checkDebugDuplicateClasses'. A failure occurred while executing com.android.build.gradle.internal.tasks.CheckDuplicatesRunnable Duplicate class com.arthenica.ffmpegkit.Abi found in modules jetified-ffmpeg-kit-audio-5.1.LTS-runtime (...) -- https://help.gradle.org
• 04:03
  Is it possible to pregenerate m3u8 file? (the playlist only) and skip the transcoding? - Jonathan Lightbringer Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to create a media server, and only want to transcode video when it's played. However I need the playlist in advance so that the client play can load the video metadata. Is this possible? I want to do something like this: Client -> GET m3u8 (pregenerated in advance) Client -> GET ts -> Transcode only this single ts file Client -> GET ts -> Transcode only this single ts file Client -> GET ts -> Transcode only this single ts file I don't want to transcode the entire video at once, I want to be able to only transcode the part that is (...)

29 mai

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

• 16:10
  Rounded corners in subtitle (Advanced Substation Alpha [.ass]) - Leander Mihm Newest 'ffmpeg' Questions - Stack Overflow
  Is it possible to have rounded corners with the BorderStyle 4 in .ass (Advanced Substation Alpha)? I only found out that the BorderStyle 4 exists, because I was looking at this stackoverflow. Is there any good and complete documentation of the Advanced Substation Alpha format? I'm currently using the following configuration: BorderStyle=4 Outline=10 --
• 13:26
  How to correctly apply select filter after trim in ffpeg? [closed] - lakhan dhingra Newest 'ffmpeg' Questions - Stack Overflow
  I am using the following ffmpeg command to trim and select certain portions of the video. ffmpeg -v verbose -i test.mp4 -filter_complex \\ "[0:v]trim=start=5:end=40,setpts=PTS-STARTPTS[v_trimmed]; \\ [v_trimmed]select='between(t,10,20)',setpts=N/FRAME_RATE/TB[v]; \\ [0:a]atrim=start=5:end=40,asetpts=PTS-STARTPTS[a_trimmed]; \\ [a_trimmed]aselect='between(t,10,20)',asetpts=N/SR/TB[a]" \\ -map "[v]" -map "[a]" -y -r 30 output_video.mp4 The above command errors out with the following trace [h264 ⓐ 0x12570a0e0] Reinit context to (...)
• 13:26
  How to create a video of a precise duration from a single image or by trimming a video using FFmpeg? [closed] - aas Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to create a video from a single image with a very specific duration of 0.09375 seconds using FFmpeg. I've tried various commands, but I can't seem to get the exact duration I need. The closest I've gotten is 0.080000 seconds. It doesn't always have to be something like 0.09375, but I wanted to have an example for it. I've also tried trimming a video, but from what I've read so far, the encoding of the video can be a problem. Even after trying different FFmpeg commands or using MoviePy directly, I've never arrived at the desired (...)
• 15:10
  In Advanced SubStation Alpha (Ass file) how can I animate each word as it is spoken? - Nick Powers Newest 'ffmpeg' Questions - Stack Overflow
  Hello I am trying to get Ass (Advanced SubStation Alpha) code to animate (highlight in green) each word as it is spoken and then have it revert back to white afterwards. What happens with my code is very odd. At first I cannot even see any text. It then appears with multiple lines overlapped, partially hanging off the screen. From this point it "kind of" works. I can see the desired highlighting happening but because the text is all jumbled and overlapping it can hardly be called a success. In case it is relevant I am using ffmeg to burn in the subtitles. I am using the following (...)
• 14:11
  Coordinates with file format .ASS - Alex Newest 'ffmpeg' Questions - Stack Overflow
  I'm grabbing my text coordinates that I want to use for the file format .ASS and for centering on a 1080 by 1920 video, I have an application that displays where the text is on the video and can retrieve the position, an example of centered position is 310 by 800. When I try to set the position of the text inside the .ASS with those positions it doesn't write the caption where is meant to be. Could some explain how a .ASS positioning works. If use 200 px by 200 px as positioning it places it way further than the center even though the video its a 1080x1920 video, shouldn't (...) -- ,
• 13:47
  Get access to SDL texture pixels - chugadie Newest 'ffmpeg' Questions - Stack Overflow
  Is there anyway (besides the documented slow method) to get access to the texture pixels from an SDL2 texture? SDL_RenderReadPixels says Warning: this is a very slow method and should not be used frequently. I want to point an ffmpeg AVFrame->data over to the texture pixels and have it encode what's in the texture. Basically, screen grab a texture after rendering and blending several textures together. SDL_LockTexture() gives write-only access to the pixels. The docs also say not to expect pixel data to be present in the pointer returned to you. Is it possible with (...)