26,105 questions
0
votes
0
answers
13
views
How to download ffmpeg utilities into Python venv with pip or manual way for torchaudio
torchaudio requiring avutil and other binary dll files
Source : https://pytorch.org/audio/2.3.0/installation.html
However they given example only for Anaconda
I am not using Anaconda but I am using ...
- 23.8k
-1
votes
0
answers
15
views
Laravel in how we can upload large size video with Repeater data with multi language
In the Laravel how we can upload large size data with multiple language video as well once video upload i need it on chunk how we can do ?
Here is DB structure
once specific program upload chunk data ...
- 474
-3
votes
0
answers
71
views
How to Turn image A + audio + A into Video A with the exact same attributes of Video B so both can be concatenated without encoding [closed]
I have image A and it is PNG
I have audio A and it is MP3
I have video B that can be any format, resolution, encoding, audio, etc
Now I want to turn image A + audio A into video A with the exact ...
- 23.8k
-1
votes
0
answers
13
views
Why is MoviePy taking hours to generate a few minutes of video, and are there faster alternatives? [closed]
I’m working on a project that involves creating personalized courses and exploring automated video generation. Currently, I’m using MoviePy to generate videos, but I’m encountering significant ...
0
votes
0
answers
32
views
Integrating FFMpeg in Native Android Application with C++ results in bunch of errors [closed]
I need to integrate ffmpeg in my android app, i don't want to usee ffmpegkit as that is not properly maintained, i cloned ffmpeg-android-maker and then ran ./ffmpeg-android-maker.sh it created build ...
-2
votes
0
answers
17
views
Compiling ffmpeg with alpha channel support in libx265 [closed]
I need to encode a transparent video in the H.265/HEVC format. Recently, the x265 software encoder library used by ffmpeg has added support for the alpha channel (docs).
I compiled ffmpeg as per the ...
- 125
1
vote
0
answers
36
views
Automate removing segments of a video using ffmpeg-python
I'm very new to ffmpeg and unable to wrap my head around the concepts entirely. My goal for this little script I've been working on all day is to:
Step 1: Read a list of timestamps from a text file ...
- 11
-1
votes
0
answers
33
views
Unexpectedly bad quality metrics of VVC encoded video [closed]
I'm working on a project where I'm comparing a number of codecs via SSIM, PSNR and VMAF.
Im getting really bad results for VVC (libvvenc) (0.23 ssim, 9.46 VMAF), even though the output doesn't look ...
- 1
-3
votes
0
answers
31
views
Adjust the audio balance dynamically in FFmpeg for a specific time range [closed]
I'm working on a video editing task using FFmpeg and want to adjust the audio balance dynamically for a specific time range within a video.
For example, I want to change the volume of the left audio ...
- 29
0
votes
0
answers
43
views
FFmpeg H.264 NVENC - high444p profile not working at 1920x1080 via library but works via command line encoding
I am building a real-time desktop streaming application in Rust and I am using FFmpeg (H.264 NVENC) to encode the raw frames captured as BGRA from desktop.
I am able to get it to work on profiles such ...
1
vote
1
answer
37
views
ffmpeg gdigrab support prebuilt library
I am using this build for Windows 64 with MSVC compiler, I need to capture screen using C++ code using gdigrab, but I can see:
Error: Input format not found: gdigrab
So just checked using the code ...
- 14k
1
vote
0
answers
47
views
Issues with Video Recording Duration and Smooth Playback when Using v4l2 framework to MP4 (FFmpeg)
I'm trying to record a video from a USB device with v4l2 framework and save it in MP4 format using FFmpeg. My sample code successfully captures and saves the video, but I'm running into some issues:
...
- 11
-2
votes
0
answers
16
views
libopenmpt @ 0000024ec3fc9400c Format libopenmpt detected only with low score of 1, misdetection possible [closed]
When I want to use ffmpeg to convert xm file to mp3, I get the error message below:
['ffmpeg', '-i', 'E:\\dodo\\test.xm', 'E:\\dodo\\test.mp3']
ffmpeg version N-110138-gb4eca5cce2-20230402 Copyright (...
- 93
-1
votes
0
answers
31
views
FFMPEG How to zoom in on video [closed]
I'm doing a zoom out of a video like this :
ffmpeg -i "input.mp4" -vf "fps=60,scale=8000:-1,zoompan=z='pzoom+0.0002':x=iw/2-(iw/zoom/2):y=ih/2-(ih/zoom/2):d=1:s=1920x1080:fps=60" -...
0
votes
1
answer
32
views
How to automate ffmpeg to split and merge parts of video, and keep the audio in sync?
I have a Python script that automates trimming a large video (2 hours) into smaller segments and then concatenating them without re-encoding, to keep the process fast. The script runs these ffmpeg ...
- 31.3k
2
votes
0
answers
78
views
+50
hls.js unable to maintain seek with live video [only] stream
I am encoding a live 25 FPS 950x540 H.264 video-only stream using the latest (built from source) FFmpeg, 10 segments in the manifest, each of 5 seconds, and consuming that stream on another machine on ...
- 927
-1
votes
0
answers
17
views
How to scroll and zoom an image at the same in ffmpeg?
I have an image of the height 1200px. I want to create a video from this single image.
My final video will be height 450px.
At 0seconds I want to show a 2xZoomed version of the image. Then it in 2 ...
- 11.5k
1
vote
1
answer
63
views
ffmpeg piped output producing incorrect metadata frame count
The short version: Using piped output from ffmpeg produces a file with incorrect metadata.
ffmpeg -y -i .\test_mp4.mp4 -f avi -c:v libx264 - > output.avi to make an AVI file using the pipe output.
...
- 520
0
votes
0
answers
5
views
Issues with Video Recording Duration and Smooth Playback when Using v4l2 to MP4 (FFmpeg)
I'm trying to record a video from a USB device with v4l2 framework and save it in MP4 format using FFmpeg. My sample code successfully captures and saves the video, but I'm running into some issues:
...
- 11
-2
votes
0
answers
69
views
Is there a way of making ffmpeg start with the largest folders first? [closed]
I have the following script (snippet), where I search for all the folders and then pass the result to xargs, where I run ffmpeg in parallel for as many threads as my CPU has (32) to convert the image ...
- 39
-1
votes
0
answers
49
views
launch ffmpeg on Maui Android
I have an Maui app which is deployed on an Android tablet, a Samsung tab S9 FE.
I have copied the ARM8 version of the ffmpeg executable in the AppDataDirectory of my deployed app. The executable, ...
- 1,707
0
votes
0
answers
46
views
How can I make an rtsp stream as correct as possible in a Django application? [closed]
I am writing a mini video surveillance system on Django. I want the stream to be output to the tag. now I have output to the img tag using a stream and jpeg images (using OpenCV)how to make a stream ...
-1
votes
1
answer
50
views
Failed to find two consecutive MPEG audio frames [closed]
I'm receiving this error trying to download/convert an m3u8
[mp3 @ 000001c8f5112200] Format mp3 detected only with low score of 1, misdetection possible!
[mp3 @ 000001c8f5112200] Failed to find two ...
- 103
1
vote
1
answer
27
views
Streaming mp3 using node http to Icecast server gives no output
I'm trying to stream a custom mp3 datastream to Icecast2. Icecast recognises there's a mountpoint, however the streamed data won't play and I have no idea why.
import ffmpeg from 'fluent-ffmpeg';
...
- 1,711
0
votes
0
answers
26
views
Capturing actual video stream quality using FFmpeg and FFplay – smooth recording but stuttering stream
I’m trying to analyze the quality of a video stream over a local network using FFmpeg. My goal is to capture the actual streamed video (with all artifacts, stuttering, or buffering) as experienced in ...
0
votes
0
answers
35
views
Issue with FFmpegKit in React Native: "Cannot read property 'ffmpegSession' of null"
I am new to React Native and Expo, and I’m trying to upload a video using expo-image-picker, then pass its URI to FFmpegKit (ffmpeg-kit-react-native) to extract frames from the video.
Here’s what I’ve ...
- 39
-1
votes
1
answer
39
views
How do I get drawtext filter in ffmpeg to work on ubuntu 22.04?
Here's my script, but no matter what I try the drawtext filter is not enabled:
#!/bin/bash
set -e # Exit on any error
# Define installation directories
INSTALL_DIR="$HOME/ffmpeg_build"
...
- 75.5k
-1
votes
1
answer
58
views
Python code to download hls stream to mp4
I wrote the following code to download a video from a website. Chrome extensions can detect the video and download it. However, my code gets the following errors. Any help?
from bs4 import ...
0
votes
0
answers
48
views
How to Match ASS Subtitle Font Size with Flutter Text Size for a 1080p Video?
I’m working on a project where I need to synchronize the font size of ASS subtitles with the text size a user sees in a Flutter application. The goal is to ensure that the text size in a 1080p video ...
0
votes
0
answers
38
views
Turn an FFmpeg command into an FFmpeg wasm exec function
I have this gnarly FFmpeg command:
ffmpeg -i music.mp3 -i video.mp4 -i speech.mp3 -filter_complex "[0:a]atrim=0:$(ffprobe -i speech.mp3 -show_entries format=duration -v quiet -of csv=p=0),volume=...
- 1,371
0
votes
0
answers
70
views
Python Discord Music Bot: Playing next song while current song is playing
I've been working on a discord bot for me and my friends and I got it working 90% of the time. I noticed that, on some occasions the bot will be playing a song and it will stop playing the song and ...
- 1
0
votes
0
answers
37
views
How to optimize recording feature with mediasoup?
I am using Mediasoup for video conference call and now i have add ffmpeg for recording feature.
Ffmpeg code below
get _commandArgs() {
let commandArgs = [
'-loglevel', 'debug',
'-...
- 961
-1
votes
1
answer
33
views
Converting HLS Stream to stream supported by old radio
I have an old internet radio that does not support HLS streams.
Therefore I cannot listen to my favourite radio at this url:
https://streamcdnf31-4c4b867c89244861ac216426883d1ad0.msvdn.net/radiodeejay/...
1
vote
0
answers
18
views
Icecast status page not showing Server Name, Server Description, Stream Name, or Stream Description
I have PHP streaming MP3 files listed in playlist.txt to Icecast using FFMpeg.
$ffmpeg_command = "ffmpeg -re -f concat -safe 0 -stream_loop -1 -i /var/www/html/media/radio/playlist.txt -c:a ...
0
votes
1
answer
33
views
Trying to get pixels from a transparent AVI file to use them in a Raylib image but AVFrame comes out
I was trying to open a video file with FFmpeg's API using C++. So far all the steps up until calling av_read_frame has no errors:
avformat_open_input, avformat_find_stream_info, avcodec_find_decoder, ...
- 164
0
votes
1
answer
32
views
Replace silence in audio using ffmpeg.wasm
I have a use case where I have to shorten silences which are longer than 2 seconds and shrink them to 1 second in ffmpeg wasm
I can remove silences which are longer than 2 seconds but couldn't shrink ...
- 2,908
1
vote
0
answers
33
views
Read sample encrypted AAC with FFmpeg
I'm trying to open a sample encrypted AAC file (packed audio) using FFmpeg APIs.
I can open an unencrypted AAC file using
AVFormatContext* iContext = nullptr;
avformat_open_input(&...
- 466
0
votes
1
answer
60
views
How to convert an mp4 file to mp3 using FFMpegCore?
How can I convert an mp4 video to mp3, using the nuget-package FFMpegCore in a C# Project (.NET 8)?
public void ConvertViaFFMpegCore(string sourcePath, string targetPath)
{
FFMpegArguments
...
- 4,754
-2
votes
1
answer
34
views
ffmpeg - add music to an audiobook, and loop the music [closed]
I found these example, and they all work. But I cannot overlay 2 audios and loop the shortest audio until the longest audio is finished.
Audio to match Video Length
ffmpeg -i VIDEO1.mp4 -stream_loop -...
- 5,272
-1
votes
0
answers
32
views
Python ffmpeg: [WinError 2] The system cannot find the file specified [duplicate]
#what i did to install
pip install ffmpeg-python
#code
import ffmpeg
crop_dimensions = "640:480:0:0"
input_file = "input.mp4"
output_file = "output.mp4"
(
...
-3
votes
1
answer
65
views
How do you convert fragmented MP4 to MP4 with ffmpeg and keep all fragments? [closed]
I am trying to convert a fragmented MP4 (fMP4) to a single MP4 file using ffmpeg. I expected the following command to work, but it only results in the initialization segment and the last three ...
- 854
0
votes
0
answers
38
views
problem with outputting decoded audio with ffmpeg c++
i am decoding a .mp4 file and want to play decoded raw audio with waveform-audio. it had some problems even tried double buffering but didnt work. it was glitchy and noisy.
i tried gathering all the ...
- 19
-1
votes
0
answers
30
views
Can I keep a persistent RTP connection in Python3 which forwards incoming mpegts segment files?
I've been experimenting with ways to implement an live-streaming HTTP server in Python 3.13 (GIL-disabled) which gradually receives .ts segment files every 1 second in order through PUT requests, ...
-2
votes
1
answer
29
views
avformat_write_header return error code when trying to write video with G711U audio avi file
I'm trying to make an avi file from a video/audio stream. When audio is AAC it works fine. But I cannot pack G711U audio.
av_register_all();
avcodec_register_all();
av_log_set_callback(nullptr);
...
- 355
-2
votes
0
answers
32
views
Gstreamer video increases latency with decreased FPS
I am using RPI 5 to stream the video:
rpicam-vid -t 0 --camera 0 --nopreview --mode 2304:1296:10:P --codec yuv420
--width 640 --height 360 --framerate 10 --rotation 0
--...
- 159
0
votes
0
answers
50
views
Problems using FFmpeg / libavfilter for adding overlay to grabbed frames
On Windows with latest FFmpeg / libav (full build, non-free) a C/C++ app reads YUV420P frames from a frame grabber card.
A bitmap (BGR24) overlay image from file should be drawn on every frame for the ...
- 21
2
votes
0
answers
26
views
Record Audio using ALSA in mp4 format
I am working on to record audio using ALSA library. I am able to record the audio using the same library in .wav file, but what I need is to record an .mp4 file. For that I initialize the FFmpeg ...
2
votes
1
answer
72
views
How to get the format of nvdec video frame from ffmpeg decoding ? How to use it in cuda structures?
I am using code, almost exactly https://github.com/FFmpeg/FFmpeg/blob/master/doc/examples/hw_decode.c, but I am not transferring the decoded data to the host, I keep it on the device for later use ...
- 7,251
-1
votes
0
answers
38
views
ffmpeg doesn't stop the playing track even after ending
I'm trying to run a 24/7 music stream on my Raspberry Pi 4. The .sh script works perfectly until the first track ends. After the track ends the script still sends empty data infinitely and so the ...
- 37
0
votes
2
answers
101
views
Record video stream in rust
I have bought a stereo camera with global shutter and a frame rate of at most 120 fps. https://www.amazon.com/dp/B0D8T3ZSL4?ref_=pe_386300_442618370_TE_sc_as_ri_0#
My next step is to write a program ...
- 1,868