23 avril

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

• 05:31
  Subtitle word scaling with ASS file causing line shifting - Barrard Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to make my subtitles scale one word at a time, but I'm running into an issue with the whole line shifting. Is there a way I can scale a word, and make the other words not move sue to the scale effect? Here is the ASS File [Script Info] ScriptType: v4.00+ PlayResX: 384 PlayResY: 288 ScaledBorderAndShadow: yes [V4+ Styles] Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, (...) -- https://youtube.com/shorts/d4VaoWqTMtQ?feature=share

22 avril

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

• 10:16
  FFMPEG: how to overlay a moving PNG with multiply blend effect (overlay filter + blend filter) [closed] - user24565885 Newest 'ffmpeg' Questions - Stack Overflow
  I tried hunting for all existing questions and couldn't find a match :-( I have a video and a PNG image that I overlay on top of that. The PNG needs to move across the video (this I have working). But I want the PNG to use a "multiply" blend effect vs. a standard alpha overlay. Whenever I try to apply both filters I get an error. This code works and moves the image (the last one) across as expected: ffmpeg -i d6b5ec90-8823-41cf-9b81-3086ce83054a.mp4 -loop 1 -i 593e677d-02bb-49c2-a0c6-c3dd8f8c2f72.png -loop 1 -i 32fea58f-ebe1-447e-b079-06f8ebb9df52.png -loop 1 -i (...)
• 09:59
  How to set stream's metadata for LAST audio stream with ffmpeg? [closed] - Tadeusz Newest 'ffmpeg' Questions - Stack Overflow
  I want to add new audio stream (ONE) to some video file (which already has 1 or more audio streams): ffmpeg.exe -y -i "C:\\video.mp4" -i "C:\\video Fre.mp4" -c:v copy -c:a copy -map 0:v -map 0:a -map 1:1 -map_metadata 0 -metadata:s:a:0 language=eng -metadata:s:a:1 language=fre "C:\\result_1.mp4" Now I manually set language metadata for existing stream (-metadata:s:a:0 language=eng) and also manually set number for new audio stream (metadata:s:a:1). Is there any possibility set metadata for the LAST audio stream just like: -metadata:s:a:last language=fre And (...)

ginger’s thoughts http://blog.gingertech.net/

• 21:47
  SWAY at RFWS using Coviu - silvia ginger’s thoughts
  A SWAY session by Joanne of Royal Far West School. http://sway.org.au/ via https://coviu.com/ SWAY is an oral language and literacy program based on Aboriginal knowledge, culture and stories. It has been developed by Educators, Aboriginal Education Officers and Speech Pathologists at the Royal Far West School in Manly, NSW. Category: Array Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post SWAY at RFWS using Coviu first appeared on ginger's thoughts.
• 21:47
  PARADISEC catalog for Users - silvia ginger’s thoughts
  This screencast shows how a user of the PARADISEC catalog logs in and explores the collections, items and files that the archive contains. Category: 2 Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post PARADISEC catalog for Users first appeared on ginger's thoughts.
• 21:47
  PARADISEC catalog for Collectors - silvia ginger’s thoughts
  Screencast of how to use the PARADISEC catalog for managing and publishing collections. Category: 2 Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post PARADISEC catalog for Collectors first appeared on ginger's thoughts.
• 21:47
  PARADISEC catalog for Administrators - silvia ginger’s thoughts
  Screencast of how a PARADISEC administrator uses the PARADISEC catalog for managing the consistency of metadata and staying on top of uploaded files. Category: 2 Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post PARADISEC catalog for Administrators first appeared on ginger's thoughts.
• 21:47
  Silvia Pfeiffer Live Stream - silvia ginger’s thoughts
  Category: 2 Uploaded by: Silvia Pfeiffer Hosted: youtubeThe post Silvia Pfeiffer Live Stream first appeared on ginger's thoughts.

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 20:24
  av1dec: Fix RefFrameSignBias calculation - Mark Thompson git.videolan.org Git - ffmpeg.git/rss log
  av1dec: Fix RefFrameSignBias calculation [DH] libavcodec/av1dec.c

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

• 21:01
  Using ffmpeg to convert all files to a subdir with same name [duplicate] - Marc Mouton Newest 'ffmpeg' Questions - Stack Overflow
  I cannot manage to make a working script for this under Linux. Basically i want a script that execute a ffmpeg command and output the files to a subdirectory with the same name as the source. Long story short it is to convert audio from several mkv files, but i want to keep the same name and as ffmpeg doesn't overwrite files, i need to output them to a subdirectory. There is this answer : https://superuser.com/questions/912730/ffmpeg-batch-convert-make-same-filename?newreg=4676efc538b54a178fcbcc17e1fd2127 But the Linux solution: mkdir outdir for i in (...)
• 21:04
  How to run FFMPEG with --enable-libfontconfig on Amazon Linux 2 - Adrien Kaczmarek Newest 'ffmpeg' Questions - Stack Overflow
  Problem I want to run FFmpeg on AWS Lambda (Amazon Linux 2) with the configuration --enable-libfontconfig enable. Situation I already have FFmpeg running on AWS Lambda without the configuration --enable-libfontconfig. Here is the step I took to run FFmpeg on AWS Lambda (see official guide): Connect to Amazon EC2 running on AL2 (environment used by Lambda for Python 3.11) Download and package FFmpeg from John Van Sickle Create a Lambda Layer with FFmpeg Unfortunately, the version built by John Van Sickle doesn't have the configuration (...) -- see official guide, John Van Sickle, installation guide, ffmpeg-master-latest-linux64-gpl.tar.xz

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 12:34
  configure: fix rpuenc typos - Haihao Xiang git.videolan.org Git - ffmpeg.git/rss log
  configure: fix rpuenc typos Otherwise there are link errors: LD ffprobe_g /usr/bin/ld: libavcodec/libavcodec.so: undefined reference to `ff_dovi_rpu_generate' /usr/bin/ld: libavcodec/libavcodec.so: undefined reference to `ff_dovi_configure' collect2: error: ld returned 1 exit status Signed-off-by: Haihao Xiang <haihao.xiangⓐintel.com> Reviewed-by: Jan Ekström <jeebjpⓐgmail.com> Signed-off-by: James Almer <jamrialⓐgmail.com> [DH] (...)

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

• 14:54
  ffmpeg output format mp3 not available - fazzal Newest 'ffmpeg' Questions - Stack Overflow
  I am working on a Node.js application that uses ffmpeg to convert videos to mp3 files. I have installed ffmpeg full build (libmp3lame included), and I have configured the path to ffmpeg correctly in my application. However, when I try to convert a video to mp3, I get the error "Output format mp3 is not available. ffmpeg(inputPath) .outputOptions('-vn', '-ab', '128k', '-ar', '44100') .toFormat('mp3') .save(outputPath) .on('error', (err) => console.error(`Error converting (...)
• 13:27
  Websocket connection in Docker - Akhil Varghese Newest 'ffmpeg' Questions - Stack Overflow
  I have a Node.js app that takes an RTSP URL as input and provide a jsmpeg websocket stream as output. The focus of app is to generate a web compatible stream from an RTSP stream, and I have acheived this using a package rtsp-relay. The app is working fine in locally. But after dockerizing the app, I am not receiving the output stream. The stream is getting terminated. The log is The Dockerfile is: I am building the ffmpeg from source in docker. # Install necessary packages RUN apt-get update && \\ DEBIAN_FRONTEND=noninteractive apt-get (...) -- rtsp-relay, ,
• 09:55
  ffmpeg "Manifest too large" when downloading youtube video - ynn Newest 'ffmpeg' Questions - Stack Overflow
  TL;DR I'm trying to programmatically download a part of a YouTube video. The widely known procedure doesn't work for some videos and I'd like to overcome this situation. Context I'm trying to programmatically download a part of a YouTube video. As described in How to download portion of video with youtube-dl command?, you can achieve this by the following commands. #Converts a human-readable URL to longer URLs for internal use. ~ $ youtube-dl --get-url (...)
• 09:10
  output stream video produced by ffmpeg gets divided into sections on screen upon streaming - Kaustubh Sonawane Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to combine cv2 frames with numpy audio array to produce a hls playlist. I'm giving input using pipe. The problem is that while streaming the output hls playlist produced by ffmpeg, the video screen is divided into 4 parts and the sizes of the 4 parts keep getting changed slowly. Also the audio is extremely distorted. Attaching images for reference: at timestamp 00:00 at timestamp 00:03 Here is the script I have written until now: import cv2 import subprocess import numpy as np import librosa def create_hls_playlist(width, (...) -- at timestamp 00:00, at timestamp 00:03
• 08:47
  How can I found FFmpeg Error code's meaning? - Birds Newest 'ffmpeg' Questions - Stack Overflow
  I have an issue using FFMPEG. avcodec_send_packet() is returning error code -12. I am trying to find what the meaning of -12 is. I found this page but I can't understand the calculation for -12: How can I find out what this ffmpeg error code means? Can anyone help me? I'm using DXVA2 for decoding. and avcodec_send_packet() function is return -12 after the 20th frame. 20th frame return 21st frame return  (...) -- ,
• 07:45
  My ffmpeg library is not being recognised as in inter or external command when trying to convert a video in python [duplicate] - Shaahid Patel Newest 'ffmpeg' Questions - Stack Overflow
  What im trying to do in python is to convert a 4k mkv video to 1080p mp4 video using the ffmpeg library. import subprocess def convert_4k_to_1080p(input_file, output_file): cmd = f'ffmpeg -i "input_file" -crf 18 -c:v libx264 -c:a aac -s 1920x1080 "output_file"' subprocess.run(cmd, shell=True) input_file = "c:/Users/Shaahid/Videos/Movies/Series/Arcane.S01E02.2021.2160p.UHD.WEB.AI.AV1.Opus.MULTi5-dAV1nci.mkv" output_file = "c:/Users/Shaahid/Videos/Movies/Series/Test.mp4" convert_4k_to_1080p(input_file, output_file) however i (...)
• 03:01
  How to get the http status code after call avformat_seek_file of ffmpeg? - 砸石头的西西弗 Newest 'ffmpeg' Questions - Stack Overflow
  How to get the http status code after call avformat_seek_file of ffmpeg to get a http url video? I have a video source which is provided as a http url link, I want to get a snapshot of it , so I call avformat_seek_file to find a frame, but I find that it returns value is not < 0, even if the http call not return 200 or 206, so I want to know how to get the response of http calling in avformat_seek_file.
• 01:21
  FFmpeg player backporting to Android 2.1 - one more problem - tretdm Newest 'ffmpeg' Questions - Stack Overflow
  I looked for a lot of information about how to build and use FFmpeg in early versions of Android, looked at the source codes of players from 2011-2014 and was able to easily build FFmpeg 4.0.4 and 3.1.4 on the NDKv5 platform. I have highlighted the main things for this purpose: and before Android 2.2 (API Level 8) such a thing did not exist this requires some effort to implement buffer management for A/V streams, since in practice, when playing video, the application silently crashed after a few seconds due to overflow (below code example in C++ and (...) -- not officially included in Android 2.1 and above, my written build script
• 01:49
  How can I add ffmpeg to a .NET MAUI project for Android/iOS? - codybchaplin Newest 'ffmpeg' Questions - Stack Overflow
  I have looking for solutions but just don't understand exactly what to do. There are several nuget packages that seem to be wrappers for ffmpeg but don't actually include ffmpeg itself such as FFMpegCore. I have been trying to follow the steps to build for Android from ffmpeg-kit, but it keeps failing and I am at a loss. Forgive my ignorance, but why is there no straightforward way to add ffmpeg to a .NET MAUI project that can be used on (...) -- FFMpegCore, ffmpeg-kit

21 avril

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

• 13:27
  How to properly specify font file for ffmpeg as it's always defaulting to Arial? [closed] - Jim Jans Newest 'ffmpeg' Questions - Stack Overflow
  When calling ffmpeg it keeps defaulting to Arial-MT / Arial-BoldMT even when specifying a font. How do you correctly specify the fontfile? When specifying any font it will always default back: [Parsed_subtitles_0 ⓐ 000001915a83f800] fontselect: (DosisBold, 400, 0) -> ArialMT, 0, ArialMT I am calling ffmpeg with the following command: ffmpeg -i input.mp4 -vf subtitles='subtitle.srt':force_style='FontName=DosisBold,Alignment=10,Fontsize=24' output.mp4 -loglevel debug I have a file called "DosisBold.ttf" in the same folder as ffmpeg. I have (...)
• 17:12
  ffmpeg - Remove first few seconds from one of the audio streams - David Davó Newest 'ffmpeg' Questions - Stack Overflow
  I have a .mkv file with multiple audio and subtitle streams. One of these streams has unsynchronized audio, and I want to move it 10 seconds, how can I do it?
• 16:50
  Capturing and streaming with ffmpeg while displaying locally - andrixnet Newest 'ffmpeg' Questions - Stack Overflow
  I can capture with ffmpeg from a device, I can transcode the audio/video, I can stream it to ffserver. How can I capture and stream with ffmpeg while showing locally what is captured? Up to now I've been using VLC to capture and stream to localhost, then ffmpeg to get that stream, transcode it again, and stream to ffserver. I would like to do this using ffmpeg only.
• 16:46
  How to extract the audio stream from an mp4 video file? - Joan Venge Newest 'ffmpeg' Questions - Stack Overflow
  Basically I am using this python code but when I put the extracted audio stream below the video stream with the same audio, they don't line up. One interesting detail is when I used the video editor itself to save the entire audio in the project when I have only the video stream, MP3 format also has a delay/lag but when I used wav format, it matched the audio track of the video 100%. So I thought changing the code to export wav format would do the same but no. from pydub.utils import mediainfo from moviepy.editor import VideoFileClip def (...) --
• 14:41
  Embedding Subtitles Permanently with ffmpeg [closed] - Mert Newest 'ffmpeg' Questions - Stack Overflow
  I am using ffmpeg to embed subtitles into a video file with the following command: ffmpeg -i video.mp4 -i sub.srt -max_muxing_queue_size 1024 -c:v copy -c:a copy -c:s mov_text out.mp4 After that, the subtitles are exists on the out.mp4 This generates the out.mp4 file with subtitles. However, if I delete the sub.srt file, the subtitles no longer appear in out.mp4. It seems as though the subtitles aren't actually embedded into the video but are still dependent on the sub.srt file. How can I modify the ffmpeg command to ensure that the subtitles are permanently (...)
• 11:27
  How do I use rust to read video (.mp4 or .mov) metadata on windows 11? [closed] - Hchap Newest 'ffmpeg' Questions - Stack Overflow
  I want to be able to read the metadata of .mp4 and .mov files with rust on windows 11 to find the date that the video was taken, and failing that, the file creation date. I need a step-by-step guide on how to set up the dependencies for the solution - I have tried with ffmpeg and was unable to get it working with msys2, at first I have issues with PKG_CONFIG_PATH but I resolved those, and then I specified the location of the includes in msys2 in cargo.toml, which resolved ffmpeg-sys not being able to find header files. However, I was unable to resolve the issue that rust could (...)
• 11:30
  Can we limit max fps by using FFMPEG? - Oleksandr Newest 'ffmpeg' Questions - Stack Overflow
  I want to limit max fps when I process a video. For example: set limit up to 30 frames per second. If I process a video with 24 fps then I don't change fps but if I process the video with 60 fps then I change fps to 30. Can it be done by using only FFmpeg (with filters or something else)? I think that it can be done by using filter like this: -filter:v "fps=fps='min($CURRENT_FPS,30)'" But I don't know is it possible to get current fps from an (...)
• 11:04
  ffmpeg concatenate a large number of videos with different codecs and resolutions - Paul H Newest 'ffmpeg' Questions - Stack Overflow
  The videos I am trying to concatenate can have different technical metadata, like codec, resolution, etc. So I wrote a filtergraph that works for my purposes. My complete command can look like this: ffmpeg -i "vid1.mp4" -i "vid2.mp4" -i "vid3.mp4" -filter_complex_script "filtergraph.txt" -map "[outv]" -map "[outa]" -c:v libx264 -r 60 -preset medium -crf 24 -c:a aac -b:a 160k "output.mp4" And "filtergraph.txt" looks like this (autogenerated by my own script before). I have the filters to change all input resolutions to Full HD. (Newlines in the following snippet are (...)
• 10:55
  How to concatenate multiple MP4 videos with FFMPEG without audio sync issues? - sb3k Newest 'ffmpeg' Questions - Stack Overflow
  I have been trying to concatenate a number of MP4 clips (h264,aac) using the FFMPEG concat protocol documented here. The clips concatenate successfully, however there are multiple errors in the logs including: Non-monotonous DTS in output stream Past duration too large Additionally, it seems that the audio and video go slightly out of sync as more clips are added - though it is more noticeable on certain players (Quicktime & Chrome HTML5). Here is the code I am using, any tips would be appreciated! Convert each video to temp (...) -- here