Questions tagged [ffmpeg]
FFmpeg is a free software project that produces libraries and programs for handling multimedia data. The most notable parts of FFmpeg are libavcodec, an audio/video codec library used by several other projects, libavformat, an audio/video container mux and demux library, and the ffmpeg command line program for transcoding multimedia files.
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Add 3sec fade out of the last frame to a video
For example, given a video 1.mp4 (no audio) of 17s, output a 20s video where the last frame fades out.
What I came up with:
Extract the last frame
ffmpeg -sseof -1 -i 1.mp4 -update true last.png
...
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FFMPEG - creating MPEG DASH stream, makes the first audio segment ever so slightly too short
I am trying to create an MPEG DASH video stream with perfectly sync'd audio and video segments. I have already figured out the correlation of the aac smapling rate and video fps, so that shouldn't be ...
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Correcting errors and inefficiency when concatenating hundreds of clips with time offsets in FFMPEG
I am attempting to automate multicam editing with FFMPEG. Basically there is some number of time-synced videos, typically up to 7. There is also a list of "clips" from the source videos (e.g....
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Does anyone know how to fix this error
Error:
ffmpeg exited with code 1: Stream specifier ':a' in filtergraph description
[0:a]adelay=41.71881518564873[audio0];[audio0]amerge[a] matches no streams
The code that I entered
const ...
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How to send av1 encoded stream to a mediamtx server?
I want to test streaming av1 encoded video from the command line but I don't have enough expertise to know if I'm doing something wrong or if it's simply unsupported.
So far I've tried gst-launch-1.0 ...
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How can I show that a frame has been duplicated to extend the video framerate using ffprobe?
As the title suggests, I have a video.mp4 which I know visually has been extended from 5 fps to 20 fps. I know this because there are 256 frames and when I run ffprobe it reports 20 fps and the video ...
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how to extract segment of input.mov, loop an image at the end, and then replace audio with segment of audio file?
I've got a movie that I captured with my iphone. Let's call it input.mov. Having edited this video using my iphone, it appears to have dimensions of 1370x970, at least according to the iphone's ...
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ffmpeg - Finding the right point to cut
I cut videos using the command below, and I sometimes find that the resulting video has imperfections at the beginning (square artifacts in the image). If I advance the start time parameter value (...
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using ffmpeg, how to concetrate multiple videos into one, but audio will be sync per video in linux?
using ffmpeg, using ffmpeg, how to concetrate multiple videos into one, but audio will be sync per video in linux?
I have tried async, vsync, atempo but i dont know how make ffmpeg to autosync audio ...
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ffmpeg - how to encode two videos of different orientation without producing freeze frames in linux?
ffmpeg fails to merge two video of different orientation.
See my bug here
Two videos - one horizontally and one vertically. Trying to merge them using ffmpeg produce freeze frames and "No start ...
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How to concatenate two MP4 files, which require http basic Authorization: Bearer <base64,user:password>, using ffmpeg?
Hello dear ffmpeg experts! 🧠 🎯
I ran the following command, which worked perfectly:
ffmpeg -protocol_whitelist https,concat,tls,tcp -i "concat:https://dash.akamaized.net/akamai/bbb_30fps/...
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ffmpeg produced freezed frames in joining multiple videos
ffmpeg produced freezed frames in joining multiple videos
(either using GPU or not same results).
ffmpeg -loglevel 99 -hwaccel_output_format vaapi -vaapi_device
/dev/dri/renderD128 -f concat -safe ...
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How to encode scenes with different CRF into a H.264 MP4 video with a variable frame rate?
Source Material
Having many scenes which essentially are still frames (for many seconds)
Commonly found in: Slideshows, Screen Recording or Software Mockup/Prototype
✅ This kind of source material ...
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Converting updating series of images to video with different durations using ffmpeg
My program generates images with different frame durations. I want to generate a video of them using ffmpeg simultaneously while new images are generated
I know how to generate a video using concat ...
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Broadcast is interrupted while streaming udp with ffmpeg
When I start a UDP stream with ffmpeg on Debian 11 server, I'm trying to transfer this UDP stream to set-top boxes via the Stalker portal. However, when I start watching these UDP streams through VLC ...
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ffmpeg - Copy the first 2 tracks of audio to new 6 tracks so all 8 tracks contains audio from the first 2
I have a 2 audio track mxf file and need to clone the video but create 8 audio tracks. The tracks 1 and 2 should be copied into 3 and 4, 5 and 6 and 7 and 8. Some files that I'm dealing with are 4 ...
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ffmpeg h264 to mp4 conversion from multiple files fails to preserve in-sequence resolution changes
This will be a long post, so I thank you in advance for your patience in digesting it.
Context
I have different sources that generate visual content that eventually need to be all composed into a ...
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Issue with repairing 3GP video using untrunc - Error: bad track: 's263'
I am trying to repair a corrupted 3GP video using the untrunc program, but I'm facing an issue due to an error.
The command I ran:
./untrunc -v ~/Desktop/logic/Video0086.3gp ~/Desktop/logic/Video0035....
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FFmpeg ass filter doesn't use font i choose
I created an .ass file with specified font (SF Pro Semibold) and wanted to merge with a video.
.ass file:
[V4+ Styles]
Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, ...
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Combining 97 items like jpg, png and mp4 using ffmpeg
I have 3 mp4 videos with audio and 92 jpg images and 1 png image. I need merge all of them, since images dont have audio i have added dummy audio at the end.
-f lavfi -t 0.1 -i anullsrc=channel_layout=...
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Can't import to Unity video clip rendered using FFmpeg for Unity
I am using FFmpeg to render a video in Unity. For the FFmpegCaptureCommand.OutputOptions I'm using this command:
-g 24 -c:v h264 -preset medium -crf 32 -pix_fmt yuv420p -color_primaries bt709 -...
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How to replicate ffmpeg filter during Adobe Premiere Pro 2022 export (to speed up the video without pitch distortion)
My normal process is to export a project to mp4 and then use ffmpeg to speed up the video like this:
ffmpeg -i input.mp4 -filter_complex "[0:v]setpts=PTS/1.3[v];[0:a]atempo=1.3[a]" -map &...
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Command line approach to taking a 16:9 video and creating a 1080x1920 YouTube short?
Is there a way of using ffmpeg or similar, taking a 1920x1080 video, cut out the middle bit for creating a 1080x1920 YouTube short and then getting it to upscale the middle bit?
EDIT: I think this is ...
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FFMpeg HLS to MXF video codec copy non monotonically increasing dts issue
I am rewrapping an HLS stream as an mxf file. The HLS is 1080p59.94 10bit 4:2:2. The mxf is a video codec copy and an audio conversion to pcm. The stream has video timecode burn-in for me to watch ...
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opus decoding in ffmpeg: how to pass target sample rate and ensure libopus decoder?
As I understand, ffmpeg compiled with --enable-libopus has two opus decoders: builtin and libopus. I am decoding an opus file to wav.
How can I know which opus decoder is being used by ffmpeg?
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using ffmpeg in linux, with vaapi, using filters, yuv420p colorspace is not correctly applied, green line, without hardware acceleration, no problem
I try to convert gopro videos applying software filters using hwaccel capabilities.
Using only cpu, I used to encode color space with this option -pix-fmt yuv420p, otherwise a black&white video ...
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ffmpeg shows "get_buffer() failed". Is this a bug?
ffmpeg version 2023-06-19-git-1617d1a752-full_build-www.gyan.dev
i7-1255U, Windows 11
The command line is
"ffmpeg.exe" -y -hwaccel qsv -ss 00:00:03.461 -to 00:00:12.009 -i "input....
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ffmpeg streaming via rtp reorders streams
I'm streaming a video using ffmpeg -i bbb.mp4 -c:v copy -c:a copy -f rtp_mpegts "rtp://239.1.1.1:8000". The command line output is:
ffmpeg version 4.3.6-0+deb11u1 Copyright (c) 2000-2023 the ...
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Adding Subtitles to a VAAPI/QSV 10bit Accelerated Transcode
I've been converting some of my BluRays to watch on a streaming machine elsewhere in the house but I'm having trouble when it comes to burning subtitles, or more specifically, I'm having trouble ...
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ffmpeg amerge ignoring channel layout
I am trying to reconstruct a 7.1 channel output after processing, and ffmpeg keeps outputting a 5.0(side). (trimmed for readability)
ffmpeg -i "intermediate/refined.mka" -i "...
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Compare 2 videos at different frames with ffmpeg
There is this nice ffmpeg command:
ffmpeg -i video1.mp4 -i video2.mp4 -filter_complex "[0:v][1:v]blend=difference,blackframe=1:10" -f null -
This command compares 2 videos but always at the ...
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How do I pipe the output of mpv into FFmpeg on Linux?
I want to get the mpv output into FFmpeg, to utilize some mpv-exclusive shaders.
I am not sure if directly piping into FFmpeg is possible, or maybe an extra step in-between is needed.
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What does the FFMpeg afreqshift filter do precisely?
I was working to change the pitch of several audio files by a factor of 0.981818... and was trying to use FFMpeg, but now I have no idea what the afreqshift filter does or how it works. It seems to ...
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How to draw - scalable - "EBU safe areas" in ffplay
we need to preview videos with overlayed so-called "safe areas" according to this EBU document: SAFE AREAS FOR 16:9 TELEVISION PRODUCTION.
Here's the scheme for 1080p resolution:
Those ...
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Trimming ffmpeg
I used this command to trim the video:
"ffmpeg -i input.mp4 -to 00:06:49 -c copy out1.ts ffmpeg -ss 00:07:13 -i input.mp4 -c copy out2.ts ffmpeg -i 'concat:out1.ts|out2.ts' -c copy output3.mp4&...
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ffmpeg: how to encoded video using AMD VCE h265 + encoded the 2nd audio stream as AAC + burn-in the 2nd subtitle stream?
As above. Thanks in advance!
PS. I'm on Windows.
This is the stream information as retrieved by ffprobe.
Program 1
Stream #0:0[0x1011]: Video: h264 (High) (HDMV / 0x564D4448), yuv420p(tv, bt709, ...
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hevc transcoded video not playing in safari
I transcoded a video with ffmpeg to hevc using the below command.
ffmpeg -i input.mp4 -c:v libx265 -crf 23 -preset medium -x265-params keyint=60 -c:a aac -b:a 128k -f hls -hls_time 10 -...
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Official AOM documentation
I could not find the official description for AOM encoding options. There are some documentations available online. However I get following contradicting explanations for aq-mode. can someone help me ...
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Why is ffmpeg modifying my 5.1 channel layout?
I have an AC3 sound file in 5.1 surround, and an MOV file with no sound. I am using FFMPEG to add the sound to the MOV file, and although it works succesfully, for some reason it is modifying the ...
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Use ffmpeg to record from RTSP stream to two outputs at different resolutions while segmenting the video based on time
I need to record from an RTSP at two different resolutions (original and something lower). I also need to have the files broken up according to clock time on every even 30 minutes, ex. 1:00, 1:30, 2:...
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Use ffmpeg to "overlay" a png on top of an entire video file
I want to be able to use a command to "edit" a video to have an image over the entire length of the video. Some videos I download have hardcoded subtitles that I want to remove. But I also ...
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How to convert/tag my video file so YouTube correctly identifies and displays it as 360 video
I have the following videofile (uploaded as is):
Which is a static timelapse of panorama photo's that spans a horizontal 360 degree field of view(and about a 40 degree ...
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29
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Replace MP4 I-Frames with a placeholder
I have an MP4 file which I want to manipulate on a hex basis, without re-encoding. More specifically I want to replace the I-Frames of the MP4 file with a kind of placeholder code.
What I want to do ...
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mp4 videos not supported by powerpoint
I have used ffmpeg-2022-05-26 to convert simple .avi to .mp4 and these videos get supported on almost all platforms, including PowerPoint. When I updated ffmpeg to the version released around 2023-05-...
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"Error initializing complex filters" Using volume filter in fluent-ffmpeg
Thanks to the answers i got on my last question, i came up with the following if statement named string :
"if(between(t,6,12.6)+between(t,16.6,29.8)+between(t,33.8,44),0.15,if(between(t,5,6),0.15/...
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Cut start and end of video file if audio is silent or contains noise
I've tried using the following ffmpeg command :
ffmpeg -i path/to/input.ts -af silenceremove=start_periods=1:start_silence=0.1:start_threshold=-50dB,areverse,silenceremove=start_periods=1:...
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How to add a afade effect to a complex filter (In this case volume)?
Here is my current command :
ffmpeg -i [videoFilepath] -i [musicFile] -stream_loop -1 -shortest -filter_complex "[1]volume=0.15:enable=between(t\,4\,10)+between(t\,14\,20)[a1];[0:a][a1]amix=...
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ffmpeg showing "landscape resolution" for portrait video
I have two video files, one on landscape and one on portrait. On my phone's gallery detail screen their resolutions are, respectively, 1280x720 and 720x1280. This is correct because the landscape ...
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ffmpeg: How to decimate frame rate without recompressing, for I-Frame only video, like ProRes?
I use a capture device from Atomos to capture video in ProRes format over HDMI. The issue is, this device will only capture video in the exact same frame rate as the HDMI signal's refresh rate. So a ...
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ffplay does not play hls continuously and it stop after a few first segments
I am using the following command to read a RTSP stream from an IP camera and record it as HLS:
ffmpeg -i rtsp://<user>:<password>@<ip>:<port> -c:v copy -c:a copy -...
