Questions tagged [ffmpeg]
Media tool with support for multiple codecs, filters, and containers. Include your actual command and the complete console output when asking questions involving FFmpeg tools. An easy way to do this is by adding `-report` to your command and pasting the contents of the logfile generated. For help with CLI use only of ff* binaries - ffmpeg, ffprobe, ffplay. For help with API usage, post on Stack Overflow.
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Size difference of output files from FFMPEG and NVENC rendering
For this:
NVEncC64.exe --avhw -i "PATH\FILE (SRC).MP4" -c "av1" --cbr 1500 --audio-codec aac --audio-bitrate 64 -o "PATH\FILE (AV1).MP4"
I used the NVEncC (x64) -Encoder ...
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Merge / join 2 images and one video
I want to join 2 images and 1 video in such a way that
firstly image1 will be for 3 seconds then
video will play
and then second image will be for 3 seconds
and finally output video ends
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How to use an audio stream that can be null in ffmpeg?
I want to take the audio from a video, set it's volume, and join them back (with some more filters, but I don't think they are relevant to the question.)
I can do it with:
ffmpeg -i vid.mp4 -i input2....
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ffmpeg error with SIGSEGV
ffmpeg was killed with signal SIGSEGV (using fluent-ffmpeg in nodejs on ubuntu)
I am expecting ffmpeg to take a provided url and timestamps, then trim the video down. Once that happens I want it to ...
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I install ffmpeg in the aws EC2 environment and convert the audio wav file to m4a, but I'm having trouble with loud noise
I install ffmpeg in the aws EC2 environment and convert the audio wav file to m4a, but I'm having trouble with loud noise
I don't know how to set parameters without noise
The ffmpeg version is ffmpeg-...
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How do I do this in ffmpeg?
To remove a 1-second video clip from every 9 seconds in a 6-minute video,if audio also present genarate a ffmpeg code.I am unable to get output can you help us
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Transcoding ts of m3u8 to multi bitrate ts. Causes player stuck due to overlap
I have live M3u8. Woukd like to convert into multiprofile m3u8 and master.m3u8.
we have achieved this using python script to populate multiprofile index.m3u8 and master.m3u8.
when we are transcoding ...
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1
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28
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ffmpeg hangs when trying to convert analog static from fpv drone
I am trying to convert a .MOV file to an .mp4 file using moviepy, which as I understand is a wrapper for ffmpeg. I have had prior success, but was disappointed when ffmpeg ground to a halt at 89%. I ...
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ffmpeg :0.0: protocol not found Did you mean file::0.0
I record the screen in Ubuntu 20.04 with the ffmpeg command:
ffmpeg -video_size $resolution -f x11grab -r 5 -re -i :0.0 -c:v libx264 -pix_fmt yuv420p -crf 40 -vf "drawtext=fontfile=/usr/share/...
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ffmpeg memory leak when use h264_nvenc encode
when i use valgrind to check ffmpeg memory leak, it reports:
==2550== 32 bytes in 1 blocks are definitely lost in loss record 478 of 2,201
==2550== at 0x4C29F73: malloc (vg_replace_malloc.c:309)
==...
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2
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+50
How can I limit 'stream_loop -1' dynamically when using 'filter_complex'?
I have a 2 inputs, a video file and an audio file.
The video input should be a background video, meaning it should repeat infinitely (both audio and video) and it's audio component volume should be ...
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%04d - am I using the ffmpeg input file ranges wrong?
Am I doing it wrong?
ffmpeg -framerate 10 -i Reiher_%04d.jpg -vf "scale=720:-1:flags=lanczos,split[s0][s1];[s0 ]palettegen[p];[s1][p]paletteuse" Reiher.gif
gives
[image2 @ 0x7ffff37fdd00] ...
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ffmpeg: filter frame using cuda
Is it possible to filter frames on nvidia GPU side?
For intel qsv it looks like
[sprites_src]vpp_qsv=framerate=1/10,scale_qsv=-1:160:mode=$mode:format=rgb32,hwdownload,format=rgb32[sprites_out];
For ...
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av_interleaved_write_frame(): Connection reset by peer
When streaming live video to a streaming provider who utilizes FFmpeg, the stream is temporarily stopped, and the encoder logs the following:
user.err ffpublish[1:0]: av_interleaved_write_frame(): ...
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ffmpeg version is 4.2.2. I'm trying to use h264_v4l2m2m encoder on tda4vm. Can anyone suggest me how can I fix the below issue
[h264_v4l2m2m @ 0x3d73a570] Failed to set number of B-frames
[h264_v4l2m2m @ 0x3d73a570] Failed to set number of B-frames
[h264_v4l2m2m @ 0x3d73a570] Failed to set timeperframeFailed to set header ...
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ffmpeg conditional filtering
i'm using ffmpeg to process a video. ideally, i'd like to apply one filter chain if the image in question is predominately a dark monochrome, and a different filter chain for other images.
it seems ...
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How to resize an animated webp？
I want to be able to change the size of a dynamic webp.
Sample picture. I found this website to do just that.
So how can I implement something similar in my own program?
I tried using ImageMagick7 or ...
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FFMPEG mic recording seems to have an automatic gain function
ffmpeg -y -f dshow -rtbufsize 10M -i audio=%mic% -f dshow -rtbufsize 10M -i audio="Line 1 (Virtual Audio Cable)" -init_hw_device d3d11va -filter_complex ddagrab=video_size=1280x720:offset_x=...
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ffmpeg not adding correct timestamps in recorded files and producing 76 milliseconds files
I am using ffmpeg to record a camera stream using rtsp protocol. Camera stream is being consumed via rtsp-simple-server. I am creating 10 second files by setting output_ts_offset to epoch realtime.
...
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Command to get only one audio track in output specified by language code with ffmpeg
Ffmpeg Command to get video with only English audio or only one language audio
I tried running ffmpeg -i input_video.ext -map 0:v -map 0:a:language=eng -c:v copy -c:a copy -map_metadata -1 -sn output....
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Cutting with ffmpeg, video got wrong colors and pixaleted frames?
After cutting and concatenating with:
ffmpeg i- example.mp4 -ss 01:02 -to 03:01 -vcodec copy -acodec copy output.mp4
it looks like the video changed resolution at some time and got wrong colors and ...
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1
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29
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FFMpeg - Trim and concatenate in one step
In this question gyan responded that it is possible to trim and concatenate in one step. This seems like a straight-forward and common function but I've not been able to find how to do that in my ...
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ffprobe reading wrong frame rate, any workarounds besides MediaInfo?
I want to check the frame rate of many videos to double it. I use ffprobe to get r_frame_rate which is evaluated to a decimal, then fed into ffmpeg as rscale -r {2*fps}, or into mkvmerge as 0:{2*fps}...
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ffmpeg `-movflags use_metadata_tags` won't copy album cover metadata
I want to edit a mp3 file using ffmpeg while keeping the metadata. I've searched how to keep the metadata and found this link. It is said to use -movflags use_metadata_tags.
ffmpeg -i input.mp3 -...
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Using ffmpeg to download m3u8 video in two ways resulting in two vastly different sizes; Why?
I'm trying to download a m3u8 playlist (which contains 1.ts, 2.ts,..., xxx.ts) via ffmpeg. I'm doing it in two different ways:
Directly download:
ffmpeg -i "https://filelocation/chunked/myfile....
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ffmpeg: av_interleaved_write_frame(): Protocol error
GoPro cameras cut up video in 4GB MP4 files.
Attempting to merge them with ffmpeg 4.4.4 like so:
ffmpeg -f concat -safe 0 -i <(for f in *.MP4; do echo "file '$PWD/$f'"; done) -c copy ...
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How to generate an .mp4 video with a static.png added with new effect as ffmpeg can add
Hoping You All are doing well.
I'm here to kindly ask how I can add effects to my generated ffmpeg videos, for example with this code I can generate a static video from a video.png and a 01.wav :...
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72
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How to create an animated AVIF from images
I have 6 images in .avif format I want to encode to a a single animated avif file.
I could create a .gif from images easily with ffmpeg and convert the generated .gif to .avif But I still want a more ...
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57
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How to flatten a VR video to display in normal screen?
I am not sure about the terminology here, but I have a VR-video that is intended to be shown using a headset with separate screens for each eye. It is not 3D in the sense that when you turn your head ...
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FFMPEG.exe does not recognize devicename
A setup with a camera and some sensors, capuring my movement is giving my and error.
FFMPEG returns a "could not find videodevice"
The camera is a Ximea and the XimeaCaptureTool tell me ...
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Is it wrong to use ffmpeg on images?
For some reason, I can just do ffmpeg -i image.webp image.png to convert an image, even though FFmpeg is for videos. Is there anything wrong with this? Is it intended behavior?
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Overlaying a text stream on a video stream with ffmpeg in Node.js [migrated]
I am creating a streaming system with Node.js that uses ffmpeg to send video and text streams to a local RTMP server, then combines those streams and sends them to Twitch.
I'm using canvas to create a ...
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ffmpeg concatenated audio not present in the output
I'm trying to concatenate two audio files and add it to a video file but the output does not contain the audio.
I can see the duration of the output video is the sum of the two audio. But the audio is ...
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How to extract individual macroblock types and their corresponding motion vectors
I need to make a pair for each macroblock from a frame of a video containing its type and motion vector.
I extracted motion vectors by using the python module of mv-extractor.
For macroblock type I ...
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Is the cd command temporary?
Attempting to change my working directory...
In the command prompt, my input was:
cd F:
Command prompt returned:
F:\
Then another line appeared, reverting my working directory back to:
C:\Users\caden
...
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How do I merge multiple video-only mp4 files with corresponding audio-only mp4 files using ffmpeg?
I have a bunch of video- and audio-only mp4 files and would like to script the merging of both files. But here's the thing, there are multiple video and audio files which are separately indicated by ...
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HLS stream optimization
I have this command to create HLS stream. Is there any way to optimize it? I know that changing CRF and preset will tune up the encoding speed, but I am looking for another tuning. Thanks for reply.
...
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Problems with combining streams into one container (ffmpeg)
I've tried combining different files on multiple occasions (e.g. add extra audio streams in different languages to a video, so that you can select your audio stream/language) but it never worked. That ...
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FFmpeg - Downmix 5.1 to stereo | -vol option deprecated [duplicate]
I was using for years a method for dowmix 5.1 to stereo using FFmpeg.
In particular the one called Downmixing without discarding the LFE channel (Dave_750's answer) and detailed in this post:
https://...
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Change 50fps video into 25fps and keep the duration without reencoding
I have a 50fps video, where every second frame is a duplicate of the previous frame. I want to upload this video to youtube and I want youtube to think it's a 25fps video. Is this possible?
For ...
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How do I set the seed used by ffmpeg's random?
I'm trying to select random frames using ffmpeg. Based on the documentation, random works in the following way:
random(x)
Return a pseudo random value between 0.0 and 1.0. x is the
index of the ...
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ffmpeg: How do I select a random frame every second?
I have a video with variable FPS that I want to reduce to 1 FPS. Additionally I want this one frame per second to be randomly sampled within the second. So let's assume a video of 5FPS, 3 seconds long,...
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How can I burn in .ass file and a watermark to a video file using ffmpeg simultaneously?
I want to add subtitles and a watermark to a video using ffmpeg. For now, I'm using Handbrake to burn in the subtitles and later I execute an ffmpeg command to add a watermark from png file.
The ...
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2
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Convert Multiple audio tracks into a Single Track with 12 channels using ffmpeg
I have multiple MOV files and each file has different numbers of audio tracks. I want to convert those files to MOV and combine the audio into a single 12-channel audio track.
For example, I have a ...
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1
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65
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How to batch convert .mkv to .mp4 using ffmpeg in macOS?
I am using this command to convert from .mkv to .mp4 in macOS:
> ffmpeg -i input/*.mkv -codec copy mp4/%~n.mp4
zsh: no matches found: input/*.mkv
> ffmpeg -i "input/*.mkv" -codec copy ...
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Trying to stream a video loop using FFMPEG. However, I keep getting the error "Cannot Write the Headers Server returned 400 Bad Request"
I am using mediamtx for starting RTSP server. The command that I am using for ffmpeg is as follows:
ffmpeg -re -stream_loop -1 -i ./clouds.mp4 -f rtsp -rtsp_transport tcp rtsp://localhost:8554
The ...
- 111
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FFmpeg Dual Fisheye to Equirectangular Conversion - Dark Shadow
Why when I use FFmpeg conversion of 360 photos I always have a dark shadow on them along the stitch edges.
I tried the Remap command method described by Paul Bourke which is supplied online and used ...
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1
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38
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How to use FFmpeg to modify metadata downmix levels of AC3 file
I'm trying to use FFmpeg to modify a metadata called "downmix levels" of an existing AC3 file (Dolby Digital surround sound file)
I have tried with at least a million different combinations ...
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1
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27
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Where does completed file go by default when merging audio and video files together using ffmpeg?
So I merged an audio and video file together earlier using ffmpeg. I Did a full search on my hardrive for outPutFile.mp4 and it was nonexistant.
Now I'm running another, slightly altered command using ...
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0
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28
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Why does my SVT-HEVC-encoded video run out of sync?
I'm trying to transcode a video (with audio) to HEVC using Intel's SVT-HEVC encoder. The video's audio tracks are in sync before transcoding.
Both ffprobe and mediainfo agree that the input video is ...
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