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.
7,030
questions
2
votes
1
answer
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ffmpeg make overlay animation smooth
am using latest version of ffmpeg and i have added image overlay to video and am trying to animate the image overlay on video , its working ok but the overlay movement is not smooth its shaky/glitchy ,...
- 153
0
votes
1
answer
107
views
Why does AAC render grainy output on my system?
I have two different systems (Windows 10 LTSB and Windows Server 2012) running the same version of ffmpeg and I'm running the following command in both of them:
ffmpeg -i input.mp3 -vn -c:a aac -b:a ...
- 131
0
votes
1
answer
2k
views
ffmpeg constantly running out of memory
I use ffmpeg on a wordpress site with a bunch of different commands and logic, which work about half the time. One day everything will run fine while other days I get "cannot allocate memory" errors. ...
- 159
0
votes
1
answer
71
views
Error when trying to extract one frame
I'm using FFmpeg version 0.8.17-4:0.8.17-0ubuntu0.12.04.2.
I need to extract a frame from a video to generate a thumbnail, and I'm using the next call to FFmpeg:
ffmpeg -i /projectes/macba/TEMP/...
1
vote
1
answer
366
views
How to merge external audio track with internal audio track from video file using FFmpeg
We have this multimedia files:
a video video.mp4
video track 0
audio track 0 is audio we don't want
audio track 1 is audio we want
an audio audio.mp3 track
How to use ffmpeg with this video and
...
- 55
0
votes
1
answer
942
views
FFMPEG Video capture with dummy silent audio
I am capturing video of the screen using FFmpeg and its work perfectly with or without audio.
I want to capture video with silent audio and I am using "anullsrc" filter but it's not working
-y -...
- 105
0
votes
1
answer
218
views
Error opening output encoder when trying to merge images with resizing and a fade transition in FFmpeg
I running into an issue when trying to merge images with resizing and a fade transition, but I am running into an error for the output encoder.
The command I am currently trying --
ffmpeg \
-loop 1 ...
- 159
1
vote
1
answer
1k
views
concatenating with crossfade several videos (with audio)
I've got 7 short video clips that are all the same size, frame rate, etc. I want to concatenate them one after another with 2 seconds crossfade, and not lose audio. Taken from an earlier post here I'...
- 33
1
vote
2
answers
1k
views
Converting a 2 channel stereo g729 file to individual single channel pcm encoded file
Whenever I try to convert a G729 encoded two channel file into mono channel pcm encoded wav files I get the following error
Input #0, wav, from 'g729stereo.wav':
Duration: 00:00:07.07, bitrate: 16 ...
- 11
0
votes
2
answers
901
views
Flag incomplete output from ffmpeg
I have a script that uses FFMPEG to convert many files. If I stop it, the file it was currently outputting will be kept in an incomplete state.
Is there a way to have FFMPEG write to a temporary file ...
- 121
0
votes
0
answers
138
views
ffmpeg recipe for mxf file
Can someone help me develop a command for producing a file that has these specs:
MXF (OP-1a)
# Audio Channels
>= 8
Resolution
1280x720
Drop Frame
Yes
Bit Rate
>= 50 Mbps
Frame Rate
59.940 ...
- 9
2
votes
0
answers
1k
views
Adding a watermark image to a video or a stream is not working
I'm trying to add a logo to a video and a stream with FFmpeg.
For the video I'm using
ffmpeg –i viddeo.mp4 -i logo.png -filter_complex "overlay=main_w-overlay_w-10:main_h-overlay_h-10" bottom_left....
- 131
1
vote
0
answers
859
views
ffmpeg mp4 video not working on iphone
I have ffmpeg working on my site to let users create various mp4s, and they all work fine on all devices except for one of my conversion functions, which isnt allowing the video to play on my iphone. ...
- 159
0
votes
1
answer
2k
views
Artifact while streaming multicast with ffmpeg
Locally, from my windows machine with ffmpeg 3.3.2 from Zeranoe
(same result with 4.0.2)
ffmpeg version 3.2.2 Copyright (c) 2003-2016 the FFmpeg developers
built with gcc 5.4.0 (GCC) ...
- 103
0
votes
1
answer
931
views
Why isn't this FFmpeg command for creating a video out of frames working?
I have a series of files starting at frame001.png and ending at frame580.png. I tried to use the following command to compile them into an mp4:
ffmpeg -framerate 60 -i frame%03d.png ..\output.mp4
...
- 131
5
votes
2
answers
17k
views
Converting FLAC to MP3 using FFMPEG?
So I am using ffmpeg to convert flac files from a certain folder to mp3 at 320k bitrate.
I am using this answer as a reference.
https://stackoverflow.com/a/41096234/9259505
So the command I use in ...
1
vote
0
answers
583
views
FFMPEG read multiple audio tracks for volume,silence or stats
I need to be able to analyse a video file containing multiple audio tracks and output the results to a text file. I know there are several filters which could give me the results I'm after, but I'm ...
- 21
0
votes
1
answer
2k
views
Generate mpeg-dash segments and mpd file using transport stream buffer
I am receiving mpeg-2 transport stream on a buffer and i need to serve the content using HTTP to a web view.
I'm planning to implement it using the mpeg-dash specification and a simple HTTP server. ...
- 103
0
votes
1
answer
270
views
ffmpeg merge resized images and fade with video file
I am trying to modify code from one of my previous quesitons so that the images are resized to 1280x720 and there is a fade transition. This is my code currently --
ffmpeg -threads 1 -y \
'.$...
- 159
11
votes
4
answers
24k
views
How to check the version of codecs in ffmpeg?
So, I know about the obvious
ffmpeg -version
but it doesn't give info such as which version of libx265 is included in my current ffmpeg build. Is there an easy way to check it, apart from converting ...
- 503
2
votes
0
answers
1k
views
ffmpeg concat filter adds audio delay gradually
I use ffmpeg to concatenate a lot of video files, using filter_complex. However, the result file has its audio out of sync gradually.
and I use mediainfo --Inform='Video;%Duration%' filename.ext and ...
- 21
0
votes
1
answer
483
views
Freeze frames in timeline editing
I am trying to slow down a video to half speed beginning from frame 100 with the setpts filter. It works, but from frame 100 I get 100 additional frozen dropped frames before the video continues at ...
- 3
2
votes
1
answer
2k
views
Encode video with ffmpeg using CUDA without NVENC
There's quite a bit of info about using hardware encoder built in Kepler-based and newer NVidia cards to encode video. As far as I understood all of them just pass the encoding to hardware encoder, ...
- 123
0
votes
1
answer
2k
views
ffmpeg - dealing with edge blur?
Is there a way to deal with Edge Blur that can occur from old bad quality footage?
example
This image here has noticable edge blurring, is there a way to resolve this since its a cartoon style image?
...
- 1
1
vote
1
answer
1k
views
Replace starting frames with a one at specified time with FFmpeg
I'm editing a video of a presentation (screencast of a slide show, so the content changes rarely). The video should be split by chapters.
The problem is that the speaker starts their talk on next ...
- 4,902
1
vote
2
answers
7k
views
ffmpeg merge audio with video and lower volume
I am trying to merge an audio mp3 file with a video mp4 file. I want the audio file's volume to be turned down a little bit so that it is background music for the video clip.
This is how my code ...
- 159
1
vote
1
answer
3k
views
ffmpeg - merge images with video
I have a video with audio that I am trying to merge with 2 images - one image before the video starts and one image after the video ends - but right now I am getting this error -
Stream specifier ':...
- 159
1
vote
1
answer
2k
views
Why is FFmpeg video splitting of 595-600 seconds slow compared to 0-5 seconds? [duplicate]
I have to split a 4K 10 minutes video into 120 small video files, each containing 5 seconds of duration. I'm using ffmpeg for splitting the video. The splitting take a very very long time and the ...
- 113
4
votes
2
answers
6k
views
How do I quickly generate low quality animated GIFs with ffmpeg?
We generate a lot of thumbnail GIFs whose quality does not matter nearly as much as the time it takes to generate them. Generating high quality GIFs with ffmpeg is very well covered, but I'm not ...
- 231
0
votes
1
answer
659
views
Commandline probe for video bitrate per GOP
Is there a way to use ffprobe or similar commandline tools to probe for the video bitrate per GOP?
ffprobe only seems to output the overall bitrate for the whole video but not packets.
ffprobe -i ...
- 103
0
votes
1
answer
1k
views
Create thumbnails of video in django using ffmpeg
Currently i am creating a website where users can upload videos and play them back .
The video upload method works fine , the problem is i am trying to create a thumbnail for each video . Instead of ...
3
votes
2
answers
7k
views
Extracting frames from all videos in a directory using FFmpeg
I'm trying to use FFmpeg to extract one frame per second from every file in a directory.
I use this command for individual files, but I can't figure out how to input a directory instead:
ffmpeg -i "...
- 51
0
votes
1
answer
164
views
How to get Transport Stream encoded files to properly display file icon image?
I don't know if I am asking this correctly but here goes.
I got a DVD box set for my birthday and trans-coded the files to store on my computer for viewing. After dumping the raw files to my computer ...
- 111
0
votes
1
answer
414
views
Batch Convert 50 Images (With The Same Audio File) To 50 Videos Using FFmpeg
I have 50 images with different names.
In the same folder, I a names.txt file that contains the names of all the images in that folder, like so:
apples.jpg
oranges.jpg
blackberries.jpg
etc.
And I ...
- 17
0
votes
1
answer
2k
views
ffmpeg - streaming audio with vorbis codec over RTP
I'm trying to set up streaming audio using RTP protocol and Vorbis codec. Starting with minimal example - generated mono samples with sender and receiver on the same machine (two instances of ffmpeg, ...
- 101
2
votes
2
answers
1k
views
Converting bgra stream to mp4
I am trying to record video of iOS simulator using the following command;
./fbsimctl stream --bgra --fps 12 - | ffmpeg -f rawvideo -pix_fmt bgra -s 414x736 -framerate 12 -i - -f h264 -r 12 - | ...
1
vote
1
answer
4k
views
No output pad can be associated to link label '1:v'
I am using this code but the error always come with.
ffmpeg -loop 1 -t 5 -i 0.png -loop 1 -t 5 -i 1.png -loop 1 -t 5 -i 2.png \
-loop 1 -t 5 -i 3.png -loop 1 -t 5 -i 4.png \
-filter_complex "[0:v]...
4
votes
0
answers
2k
views
Time of extracted frame from video using FFMPEG
I'm using the command
ffmpeg -i video.webm -vf fps=1 thumb%04d.jpg
to get one frame every second. However, I cannot figure out way to get the exact timestamp of an extracted frame. I need that ...
- 41
6
votes
4
answers
12k
views
Get the list of I-Frames in a video in FFMPEG / Python
I'm trying to select say 10 frames from a given video, possibly with highest variety and scenes. I would like to experiment with various selection scenarios, but the good thing is that the notion of I-...
- 529
1
vote
1
answer
3k
views
FFMPEG - convert WMV to MP4 Fails
I tried some other recommended conversion commands but none of them worked. Here's the basic command:
ffmpeg -i wmvfile.wmv somefile6.mp4
Output:
ffmpeg version N-91548-g481741ece0 Copyright (c) ...
- 11
1
vote
3
answers
1k
views
Pixalation Issue in mp4
We are using below ffmpeg command for mp4 creation. output showing the pixalation.
I have alter multiple parameter in command but pixalation not getting reduce.
I want to kept bitrate constant to ...
0
votes
2
answers
2k
views
What means [x] mean in FFmpeg
ffmpeg -ss 4.5 -t 3.9 -i input.mp4 -vf "fps=18,scale=360:-2:flags=lanczos,palettegen" palette.png
ffmpeg -ss 4.5 -t 3.9 -i input.mp4 -i palette.png -filter_complex "fps=18,scale=360:-2:flags=lanczos[...
user929492
0
votes
1
answer
674
views
FFmpeg reduces quality of video despite low CRF
I've been trying to encode a collection of videos I have to remove unnecessary logos from the beginning & reduce file size. I'm using FFmpeg to start at approximately 6.2 seconds or 186 frames ...
- 238
8
votes
3
answers
3k
views
flac to mp3 with ffmpeg leads to warning "Frame rate very high for a muxer not efficiently supporting it."
With this command
for file in *.flac; do \
ffmpeg -i $file \
-codec:a libmp3lame -qscale:a 6 \
"${file%.*}.mp3"; \
done
I converted flac files to mp3. But I get the ...
- 83
1
vote
0
answers
1k
views
FFPROBE returns that all I-Frames are IDR frames (KEYFRAME=1) in a TS file
Running
ffprobe -v quiet -print_format json -show_format -show_frames -show_streams -unit -select_streams v "D:\CH621.ts" > "D:\CH621.ts.json" -skip_frame nointra
Result shows that all 6 I-FRAMES ...
- 11
2
votes
4
answers
2k
views
How to enhance 22.05 kHz speech audio material for listening purposes to 44.1 kHz?
I have found a really interesting radio novel on the web, and I would like to attract attention of one of my acquaintances to it. Unfortunately the audio material has poor quality, only 22.05 kHz and ...
- 673
6
votes
2
answers
28k
views
ffmpeg: how to create an interlaced h.264 video?
I would like to convert a high quality non interlaced input video into a less quality but wider distributable H.264/MP4 format. The output should have some constraints - in particular: it should be ...
- 121
1
vote
0
answers
596
views
Speed up videos using ffmpeg without setpts
Is there any way to speed up videos in ffmpeg but have it actually remove frames instead of just speeding up the time the frame is shown? The reason I want to do this is because I wanted a way to ...
- 210
0
votes
1
answer
244
views
FFMPEG- Audio Channel Issue
We have source file IMX 50 mxf which has 8 interleave audio channel and 7,8 audio is left and right stereo. we need to replace 1,2 audio channel in source with 7,8 stereo channel. we are using below ...
0
votes
1
answer
900
views
How to create an image using images with FFMPEG?
How to create an image using images with FFMPEG? Something like below?
-f lavfi -i color=c=white:s=1080x1920 -loop 1 -i 1.png -loop 1 -i 2.png -filter_complex [0:v][1:v]overlay=shortest=1:x=0:y=0[v1];...
- 101