Questions tagged [video]
Questions about video editing, streaming, conversion, capturing or video output. Use a more specific tag if possible.
5,699
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FFMPEG image capture only executes partially on cron
I have the following shell script:
DailyScript.sh
#!/bin/sh
now="/Users/mydir/Downloads/LIDOPRO/Captures/$(date +'%Y_%m_%d_%I_%M_%p').jpg"
"/Users/mydir/Downloads/LIDOPRO/ffmpeg" -...
0
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0
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10
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ffmpeg: set fixed GIF framerate while using filter_complex
I'm using ffmpeg to create a GIF from a sequence of images.
Also using filter_complex option to generate a boomerang fx.
ffmpeg -framerate 20 -i frames/%07d.png -y -filter_complex [0]reverse[r];[0][r]...
- 101
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0
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9
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Adding music to Video FFMpeg
I am trying to add random music to a video from a text file but don't know how to do it, Code tried is
ffmpeg -f concat -safe 0
-i C:\Users\harin\Desktop\test\list.txt
-i E:\gy\Videos\Music\music....
- 103
0
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0
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12
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Is youtube's excluded search bugged? [migrated]
Is anyone able to explain how youtube's excluded search works? It seems to be bugged.
If I type into search box: foo -bar
I expect it should list all movies with phrase "foo" (either in ...
- 201
-1
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19
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Avidemux takes too much time to play video after installing new font
After i installed new font for win xp, i recognized some problem in avidemux!
Each time i tried to play video while enabled showing filters, it take too much time to play!
Even in preview window it's ...
0
votes
1
answer
45
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ffmpeg insert video on top of other video
I am trying to add video on top of another video but don't know how. I am noob in ffmpeg can any one help.
Code I have tried:
ffmpeg -i C:\Users\harin\Desktop\test\c\10sec.mp4
-i C:\Users\harin\...
- 103
14
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5
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ffmpeg: limiting to single CPU core when encoding h264
I need to reduce the framerate of some H.264 videos in the background without maxing out my CPU (on Linux). Somehow -threads 1 has no effect at all:
ffmpeg -threads 1 -i 50fps.mp4 -filter:v fps=30 ...
- 393
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19
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Using FFmpeg Batch Mux different audio file with same sample video stream
I have some audio only file in folder as filename.ac3 and need to mux with sample video only stream(sample.vob) with all audio file in that folder.
And need to get output as all different audio file ...
- 1
1
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28
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Is framerate inversely proportional to video image quality?
I have screen recorded a several videos on my android phone, they take more than 128GiB of space, so I have decided to reduce the filesizes of the videos using ffmpeg.
I intend to minimize the ...
- 1,893
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21
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FFmpeg keep framerate of input video despite overlay on color source
FFmpeg can overlay (docs) videos like this:
ffmpeg -i inputA_60fps.mp4 -i inputB_60fps.mp4 -filter_complex "[0:v] [1:v] overlay=shortest=1" output1.mp4
-> The frame rate of output1.mp4 ...
- 121
0
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1
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27
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How to merge videos together use VLC command line（some video have one audio track, some video not have audio track）
vlc *.mp4 --sout "#gather:std{access=file,dst=all.mp4}" --no-sout-all --sout-keep
I have tried the above command, but it doesn't work.
Except for the number of audio tracks, these videos ...
- 1
0
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1
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16
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FFmpeg adds faint background to PNG watermark
I have an FFmpeg command that I've been using in a few scripts for a while, but have recently noticed that it's adding a slight, mostly transparent background to the PNG watermark that I'm overlaying ...
- 10.3k
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15
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zoom / pan variable transform
I have a stream of data points that define zoom and pan over time that I need to apply to a video.
I can see that ffmpeg tool has https://ffmpeg.org/ffmpeg-filters.html#zoompan filter. However, it ...
0
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13
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VLC - Show time remaining after speeding up? (Show real-world time remaining)
Not much of an issue, but as someone who watches long videos at x2 (or more) speed, the time remaining that the software normally displays (i.e. time remaining in file) is kind of meaningless since '...
- 101
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15
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Progressively adjust audio volume over time
I have two audio tracks and what I need to do is at some time to start lowering first audio track and progressively tune second audio track. This change in audio tracks should take for example 2 ...
- 101
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1
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17
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Can I increase audio gain in a Matroksa file without recoding?
I have a Matroska container with some video stream, some subtitles stream and an AAC audio stream. Now, the audio's gain/volume is too low, relative to other media files I play, and I want to increase ...
- 7,302
0
votes
1
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23
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Is it possible to connect 2 external monitors to a laptop if USB-C doesn't support video output?
It appears that my laptop's USB-C port doesn't support video output. So, predictably, when I tried to connect a docking station, with 2 monitors attached, to the laptop's USB-C port, it didn't ...
- 17.3k
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11
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FFMPEG - Copy l-frame range. (-ss -to) And Re-encoding not l-frame range. And merge all?
1- copy between nearest -ss l-frame and -to l-frame.
2- Re-Encoding those not in range of l-frames
3- concat step 1 and 2 :)
The first seconds are wrong when cutting by copying (-c:v copy -a:v copy).
...
- 31
1
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0
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27
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Split folder of multipage TIFFs into frames and join into movie on MacOS command line
I'm using a FLIR Boson thermal imaging camera, whose 'video' output consists of sequences of 'one-second long' multipage TIFF files.
The frame rate is variable, but averages 8.6 fps. So, each TIFF can ...
- 11
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22
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How to merge 1 video and 8 channel audio
I want to add 1 video(.mov) and 2.0 stereo audio to this command.
ffmpeg -i out1.wav -i out2.wav -i out3.wav -i out4.wav -i out5.wav -i out6.wav -filter_complex "[0:a][1:a][2:a][3:a][4:a][5:a]...
- 1
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22
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FFMPEG - merge (NOT concatenate) multiple sets of 2 videos in for loop
I have a folder A with mp4 audio.
Folder B has mp4 video.
The filenames match, expect that they are in different folders.
These are movie files that when they were downloaded came in two separate ...
- 11
1
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0
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32
views
What is the limit for how many characters of metadata can be saved in the comments metadata of an MP4 file?
Suppose I have an MP4 file nd I want to add lots of info into the comments section.
What is the character limit for the comments section of MP4 metadata?
- 21.6k
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6
views
Something wrong with video length, h.264 and size?
While uploading videos to my website, I noticed that when they were split into 10 distinct 10 minute videos, they add up in the order of 300mb, but if they are to be concatenated into a single render ...
0
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0
answers
46
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Force ffmpeg to produce constant frame rate
Why does ffmpeg produce variable frame rate output?
I have an input file, that when I run it through MediaInfo it tells me it's a constant frame rate video:
Video
ID ...
- 101
0
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0
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29
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ffmpeg dynamic image overlay
I would like to add an image overlay (That I can then update) To my Livestream that takes RTSP as input and streams it to youtube.
Here is the command.
ffmpeg -f lavfi -y -i anullsrc -rtsp_transport ...
0
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0
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8
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How to add a fixed frame to a video that repeats continuously using ffmpeg
I am looking for a way to freeze video frames and audio in cycles. Unfortunately I can only set the time manually. However I want it to be continuous and repeatable with a cycle that I control. Is it ...
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51
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ffmpeg: convert dv Movie File to mp4
I have an old file called 'faces' (no extension) and although quicktime cannot open it, VLC can open the video file no problem. When viewing a folder in list view containing this file, it is listed ...
- 19
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0
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7
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Video thumbnails rotated 90 degrees in Finder (macOS Sierra 10.12.6)?
The previews for several videos are displayed correctly in either the 'get info' preview, or when I have a video selected in Finder and hit spacebar. When I open the video file, it plays in the ...
- 1,933
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20
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Combine two ffmpeg commands
I am using this command to remove the first 10 seconds from all videos in a folder and outputs them into a folder named "done".
FORFILES /M "*.mkv" /c "cmd /c ffmpeg -ss 10 -i ...
- 1
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27
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Bitrate over Codec for the best quality?
AFAIK bitrate means how many bits are used to record the audio/video within one second, while codec (or file format) means the compression method to store the clip.
To me, the higher the bitrate, the ...
- 481
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23
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Unable to share whatsapp videos on web whatsapp
Recently web.whatsapp.com will not share new videos created by ffmpeg, using the same code to generate them.
However videos from the same code still work on whatsapp.
Does anybody know the correct ...
- 355
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26
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FFMPEG - Convert DTS-Audio to AC3 - But Keep Original Video and Audio Files
i am having trouble to understand the documentation on FFMPEG-Website
Can you please help me out?
So far i got an working command for converting the DTS to AC3 but overwrite the original DTS
C:\...
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0
answers
29
views
Decompressing video to limit hardware requirements for playback
I have an un-typical problem. I am trying to find out is it possible to decompress the encoded video file so the playback device is capable of playing two separate 4k streams (low-end GPU). It is ...
- 1
0
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0
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9
views
How get time series data or stats of VBR bitrates?
Given a file or stream of audio encoded as VBR (Variable Bit Rate), how could one measure (list or statistically summarise) the bitrate variations over a time period?
(Independently of whatever may be ...
- 31
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11
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Is it possible to use FFMPEG stream_loop along with an alpha/transparency filter like fadein or fadeout?
I have found stream_loop to be so much faster than -loop for encoding image overlays and I am able to move/animate the image by manipulating the x.
However, when I use fadein or fadeout it only works ...
- 131
1
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0
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25
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FFmpeg stops encoding images to video after it encounters a bad image file
I am using a Raspberry Pi to record from 2 cameras at the same time using a multiplexer, meaning I can't set it to record mp4s directly and instead I have to take images, switch camera and then take ...
0
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0
answers
23
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How small can you make a video's file size, even with loss?
I want to downsize the whole bee movie to under 8mb, not caring about the quality of the video, as long as there is sound and at least a few pixels. The minimum size I have gotten with cv2 and ffmpeg ...
- 1
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15
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FFMpeg, rtsp cameras and series of bad frames
I have a problem with ffmpeg and rtsp cameras, as you can see in the screenshot below:
Sometimes I get a series of damaged frames. It is not a problem related to the camera.
The date and time is ...
0
votes
1
answer
44
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ffmpeg overlay image on video & trying to keep the original video quality
I'm adding overlay images to a video. and I'm trying to make the output very similar to the original video in order to get the best quality for example if the original video (like the one in the ...
- 17
0
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1
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20
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Perform loop task for audio video encoding with ffmpeg in Linux bash shell
I have files, like these:
01 - A.wav
02 - AB.wav
03 - C.wav ... and so on until 15 - BLA.wav
and I have some command line like these:
dirinwav="/home/akrogun/Videos/CD1" && \
...
- 1
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0
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15
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ffmpeg unable to parse really long command; Invalid duration specification for to: 00:0011
I'm trying to run an extremely long ffmpeg command but I end up getting an unusual error. I have the following command in a .cmd file:
ffmpeg -ss "00:00:00" -to 00:00:10 -i "F:\MusicGen\...
- 896
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61
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FFmpeg preserving 360 video orientation
I am using FFmpeg (version 2022-03-24) to convert dual fisheye 360 video recorded on a Rylo camera into equirectangular format. My goal is to stitch videos in bulk on the PC instead of using the Rylo ...
- 293
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49
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ffmpeg output with assumed duration 0 on Android
I noticed that videos generated by FFMPEG have a duration of 0 on Android even when I try a full clone.
I tried the following commands, but the only one that had any effect was with -movflags ...
- 13
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0
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12
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ffmpeg - reading meta data value every 16ms to produce overlay
I'd like to combine a few data sources for telemetry overlays over a video. The MP4s have some metadata embedded from my GoPro but I have a few other data sources I'd like to include. I already have a ...
- 101
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0
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18
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ffmpeg, put 5000 trimmed inputs and filter complex into file?
I have a huge monolithic ffmpeg command and unfortunately I am not able to run it because "the command line is too long." I'm on Windows 10. The exact input command and output can be seen ...
- 896
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29
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HDMI needs reset after boot -- Surface Pro Dock w Projector
I have a Surface 7 Pro with the Microsoft Dock. Plugged into the two video ports are a projector and a monitor.
The monitor always works, never any issues.
The Epson projector almost always needs me ...
0
votes
1
answer
24
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FFMPEG extract a specific frame and output its type (I, P, B)
I'm using this command to extract two specific frames
ffmpeg -ss 00:03:00.0 -i video.mkv -vf select="eq(n\,0)+eq(n\,1)" -vsync vfr -vframes 2 %01d.bmp
How do I know the frame type of each ...
- 1
0
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0
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27
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What is wrong with this command of mine? "ffmpeg crop and drawtext"
I have some command line to process video and it is getting some errors, can you help me to fix it?
@ECHO OFF
Setlocal EnableDelayedExpansion
set INPUT=D:\Shorts\code\INPUT
set OUTPUT=D:\Shorts\code\...
- 79
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0
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111
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Premiere Pro Hardware vs Software Encoding - Quality results
While exporting a Video in Adobe Premiere Pro, there is the option to export a Video with Software or Hardware Accelerated encoder. After i searched a bit about this topic i found that it is pretty ...
- 175
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0
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14
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How to clear saved settings of video card
When I install video card driver, it changes the windows 10 resolution dimension automatically or probably loads previous saved setting and in this setting my monitor shows out of range error. To fix ...
- 149