Questions tagged [video]
Questions about video editing, streaming, conversion, capturing or video output. Use a more specific tag if possible.
6,188
questions
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How to merge raw H.264 video and AAC audio streams, making sure the video matches audio duration?
I had a corrupt screen recording, and I used mp4fixer to extract the raw h264 stream and the aac streams separately. The audio sounds just fine, but the h264 stream doesn't seem to have a well defined ...
0
votes
1
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119
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More buffering when ffmpeg saving rtsp to mkv file
I have a GSM connection to my cameras. When I playback stream directly from cameras everythink is OK, but if I save the same stream to file I have 80% of broken frame like this:
My ffmpeg params:
...
0
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0
answers
86
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ffmpeg use of ildct flag in progressive encoding
I've encountered a scenario whereby someone else has configured an ffmpeg encoding command with flags that don't make sense, and I'm having difficulty understanding their purpose.
The command in ...
0
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1
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297
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FFMPEG: Program does not quit when it returns an error (command line loops)
I'm using ffmpeg to stream a video online, using the following command:
ffmpeg -i <stream_link> -t 00:09:00 video.mkv
This works well. But sometimes the stream ends, and then FFMPEG will throw ...
0
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0
answers
37
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Setting transfer characteristics for overlaying multiple videos
I just wanna know whether I can set unique values of transfer characteristics/gamma for each videos while overlaying it on top of a single video.
For example :-
FFmpeg command : ffmpeg -f lavfi -i ...
0
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0
answers
109
views
FFMpeg creates image from a timestamp but not from another timestamp
While trying to create an image from a video, the following command does not create any output and completes with the warning
Command with timestamp 7 sec:
ffmpeg -ss 00:00:7.0 -i "input.mp4"...
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0
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149
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FFMpeg create image from hardware decoded media and software decoded media
I'm trying to create an image thumbnail at a particular timestamp from a video.
While doing the activity I came up with two commands. Some videos were successfully processed by first command and some ...
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0
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57
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FFMpeg series thumbnails created less than expected
I have the following ffmpeg command to create a 576p video, and series thumbnails at an interval of every 2 seconds.
ffmpeg -hwaccel cuvid -hwaccel_output_format cuda -i input_video.mp4 \
-vf "...
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0
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74
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FFMPEG - PNG Overlay - Fade In / Out - Start & End of video + Combine Videos
Hoping someone can help me with this.
I'm looking to automate some editing tasks.
I want to write an FFMPEG command that will do the following. Input is VIDEO.MP4
Add a 1 second fade in and out to ...
0
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1
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197
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How to use Ffmpeg OpenCl filters that are accelerated with nvenc
I'm trying to capture a screen that is in portrait mode using ddgrab(on a 3080, so using nvenc). This was the original command:
ffmpeg -f lavfi -i ddagrab=output_idx=0 -c:v h264_nvenc -cq 18 output....
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1
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84
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Combine images and draw text on each image with animation xfade
I am using ffmpeg to merge multiple images and an audio to produce a video. I am using drawtext and xfade with dissolve transition. My ffmpeg command is given below.
ffmpeg -loop 1 -t 5 -i ./img/img0....
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1
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81
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Unexpected output when using FFMPEG to add multiple English Subtitles to MP4 file
I am trying to soft-encode 3 subtitle files into my film.
I extracted the subtitles from the DVD using ByteCopy
I am using this command to add the files:
ffmpeg -i BloodDiamond.mp4 -i ...
1
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0
answers
93
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Ffmpeg encoded video results in corrupted YouTube video
I'm creating videos for YouTube that combine a still image with an MP3 file. For some reason, some of the videos get corrupted (in the example below after 15 seconds) and result into a gray screen. ...
1
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1
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145
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How do I extract video frames for editing one at a time?
I'm trying to apply graphicsmagick v1.3.42 filters/resizing to frames from videos extracted with ffmpeg v6.1.
The process of extracting and resizing all frames uses alot of space, I want to iterate ...
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0
answers
28
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how to send multi video in udp protocol with in single ip/port?
According to the ffmpeg documentation using UDP protocol
i need send multi input to local network in single IP/Port and received from VLC Player each video can choose with Program number and show it !
...
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1
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82
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ffmpeg make a video from two images and two audio files
I'm trying to create an MP4 video from two images and two mp3 audio files, this is my command:
ffmpeg -hide_banner -loop 1 -i incoming/img0.jpeg -loop 1 -i incoming/img1.jpeg -i incoming/aud0.mp3 -i ...
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0
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34
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Truly befuddling comorbidity of AMD GPU video issues that seem specific to Windows 11
So, I have two issues that seem to be related, but I'm unsure. Any advice from those more wise than I is appreciated, but I know my way around Windows and hardware stuff plenty well.
So:
When the ...
0
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1
answer
57
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Create a slideshow video with the date added as a text automatically
Is there a way to Create a slideshow with the date as a caption automatically?
So basically, I want to create a slideshow video of family photos and as each image is displayed the date and time of the ...
1
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0
answers
108
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Sending and receiving ffmpeg video stream through USB to TTL converter
I need to transfer video signal through USB to TTL converter from one VM and receive it on other USB to TTL converter then display the received stream on second VM (the bitrate on converters are ...
2
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0
answers
92
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How can I securely watch videos on my VPS downloaded from untrusted websites?
I have a linux VPS containing videos downloaded from untrusted websites, which may contain viruses. I want to watch these videos safely.
I'm not concerned about the VPS itself being infected, I'm wary ...
1
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1
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482
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ffmpeg video encoding has no audio
When I convert any video in ffmpeg - e.g. mp4 to mkv, mkv to mkv - I lose audio for some reason
here are the parameters I originally used:
ffmpeg -i input.mkv -vf scale=640x480 -vcodec libx264 -...
0
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0
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42
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Choice of file sharing for projector
I have a question similar to this one: Using projector via Wi-Fi from Linux laptop running Ubuntu 19.04 (Disco)
I haven't had a TV for the last 40 years, but the family wants a projector for Xmas. I'm ...
0
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1
answer
116
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Ffmpeg concat filter produces frames from different videos
I have a workflow in which I give several videos to ffmpeg, each video corresponding to a shot, and ffmpeg concatenates them to produce a single video, interlaced at 25 fps. The problem is that ...
1
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0
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103
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Incorrect movie Keys metadata with ffmpeg
It seems ffmpeg erroneously copies keys metadata to UserData atom, and macOS 14 QuickTime player or Photos do not read it.
For example: The input.mov has Keys tags for Author, Title, Description, ...
2
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1
answer
636
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ffmpeg how to remove all but 2 subtitles without knowing their index number
Let's say I got one of thouse movies that came with 20 or 30 subtitles. How to remove all subtitles of a movie except English and Portuguese, but I don't know there index number.
If I would know the ...
1
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1
answer
323
views
Streaming to Facebook Live with ffmpeg
I've set up an RTMP/RTSP streaming-service with MediaMTX on my desktop.
From OBS Studio, I'm then streaming to:
Server: rtmp://localhost/
Stream Key: stream
This leaves me with 2 streams:
RTMP: rtmp:/...
1
vote
1
answer
594
views
Stop Auto-Playing YouTube Videos When Restoring Google Chrome Session Tabs Only
I regularly have a large number of tabs open, and often several of these tabs are YouTube videos which have been paused. For the sake of an example, let's say I have 12 tabs with paused YouTube videos ...
2
votes
1
answer
97
views
How do I use Linux Mint and ffmpeg software to stabilize a large video?
I made a video with openshot that is 7.3 GB. ffmpeg only stabilizes half the video. Is there a length limit of ffmpeg that is used? This is what I'm using:
ffmpeg -i video.mp4 -vf vidstabtransform,...
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0
answers
186
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Using FFMpeg to match images with videos
I've recently been ripping some of my DVDs, however the output isn't in order or labelled in a helpful way. I want to use FFMPEG to find still frames in these episodes in order to name them.
I can ...
1
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0
answers
826
views
Remote desktop audio lag
Why when using remote desktop, when playing a video, my keyboard executions are almost perfectly in sync with the image on the screen, but the there is like a 1 second audio delay and sometimes 2 ...
1
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1
answer
331
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How to rotate a video by 180 degrees using ffmpeg?
I want to cut a short part of a video and rotate it by 180 degrees. I tried
ffmpeg -ss 70 -i GH030258.MP4 -t 10 -vf "transpose=2,transpose=2" -c:a copy passing_opponent_alarm_084305.mp4
...
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1
answer
131
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Search videos by exact length under Windows File Explorer?
is there a way to search videos by exact length under the Windows File Explorer? (i.e. length:00:31:42)
There is a command "length:" but it only supports values like "Very Short, Short, ...
0
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1
answer
133
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How do I prevent FFmpeg from replacing all the audio stream names with SoundHandler?
I'm using FFmpeg to change a video container from mkv to mov with this code:
ffmpeg -find_stream_info -probesize 84M -i input_file.mkv
-map 0:v -map 0:a -map -0:s -codec copy output_file.mov -...
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0
answers
107
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ffmpeg prepend still image to video
Disclaimer: I am NOT proficient in video editing at all; this is almost my first attempt
so I could be missing something very basic. Please be lenient and redirect me to relevant
tutorials, if needed.
...
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0
answers
53
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ffmpeg: UVC Interlaced Video
I'm trying to combine an alternating fields interlaced video stream from an UVC video device. The device is an analog (CVBS) to digital converter that supports Interlaced video through usage of the ...
0
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0
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131
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ffmpeg: use vidstabtransform to overlay it over blurred background
I am using ffmpeg to concatenate multiple video clips taken from the same object over multiple timeframes. To make sure the videos are properly aligned (and therefore show the object in rougly the ...
0
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0
answers
39
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Why did `exiftool -rotation=0 input.mov` rotate my video?
I have an input.mov video file recorded by an iPhone 12 mini. I copied the video to my Windows 10 laptop. When I open the on video on my Windows 10 laptop with VLC, the video plays in portrait mode. I ...
0
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1
answer
319
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Convert MKV to HLS with all audio tracks and subtitles available
For the past few weeks, I've been trying to convert MKV and HLS files. Currently, I'm burning the first available subtitle track of the file in the video and keeping only the first audio track.
What i ...
0
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0
answers
125
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FFMPEG: Using RGBA filter for transparency taking too long
I'm using following command to concatenate multiple videos using FFMPEG,
-ffmpeg -y -i 'video1.mp4' -i '/video2.mp4' -i '/video3.mp4' -i 'musico.mp3'
-f lavfi -i anullsrc=r=44100:cl=stereo -i '/...
1
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0
answers
137
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How is this Linux computer able to output video without a display connection?
I bought a Tempo Studio a little over a year ago and love the weights but not the subscription software. I'd seen it fail into GRUB before and know it's Ubuntu-based PC and figured, how hard could it ...
0
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0
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289
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MP4 file has very high frame rate
I recently downloaded some video files via player.vimeo.com.
They are in mp4 format, about 50 minutes long.
The Windows 11 file manager properties says the frame rates are very high, like 15,272 fps.
...
0
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0
answers
94
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FFMPEG: transcode interlaced J2K
i've been tasked with developing a solution using ffmpeg that will transcode archival videos into FFV1. the videos are all JPEG2000, but some are uncompressed and others are compressed. as the ...
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2
answers
215
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How to change laptop video contrast?
Windows 11 laptop HP 17t-cn300 newly bought. How do I change the contrast, hue, other advanced video settings? I am in Settings > Display, and it has night / red shift, brightness, but I do not see ...
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0
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131
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How do you create an MPTS file on ffmpeg with two h264 inputs?
I need to contain two h.264 files (same video, different resolutions) within the same MPTS container, but I can't quite figure out how to use two inputs to create one output.
I tried using ffmpeg -i (...
0
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0
answers
73
views
Using ffmpeg and concat demuxer producing weird video navigation behaviour
When combining multiple videos segments, each encoded with H265 and Vorbis and containing the same number of streams and frame rate, I use:
ffmpeg -f concat -safe 0 -i mylist.txt -c copy output.mkv
...
1
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0
answers
45
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Spliting video with ffmpeg producing wrong durations
I'm currently using a framework where I have to split a video (originally encoded with HEVC video and AAC audio) in multiple parts to process them separately. Then the final result is obtained by ...
0
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0
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143
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Ffmpeg: color related commands
I use hlae+ffmpeg for recording and for parameters of recording i set: -c:v ffv1 -pix_fmt gbrap16le -coder -2 -g 1 -threads 4 -context 1 -slices 30 -slicecrc 1 -level 3 -fps_mode passthrough -...
0
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1
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239
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Send info from ffmpeg to text file & then parsing into a new file
I am trying to scan a directory of .mkv files and output the volume information to out.txt and then parse out.txt for volume_max and send it to log.txt using
for %i in (*.mkv) do ffmpeg -i "%i&...
0
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1
answer
261
views
Loading chapter data in VLC from external file for any video format
I have a number of video files (in various formats: mp4, webm, mkv, etc.) and I'd like to add chapter information to them (similar to how Youtube shows links into parts of videos).
I'm not terribly ...
0
votes
1
answer
197
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FFMPEG command created a file that I can't delete or rename. If I try to do either of those windows explorer stops responding
Using windows 11. I was trying to merge a png image and a wav file into a video for youtube using ffmpeg. The command I used was:
ffmpeg -loop 1 -i image.png -i audio.wav -c:v libx264 -tune stillimage ...