Questions tagged [video]

Questions about video editing, streaming, conversion, capturing or video output. Use a more specific tag if possible.

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FFMPEG combining filter_complex and realtime processing

I am having trouble using both options. The goal is to use the loop filter to stream part of a video. This is the test command I've been running. ffmpeg.exe -re -i .\input.mkv -c:v libx264 -preset ...
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12 views

What video player has the functionality of playing back videos in a folder sort by creation date? [closed]

I have a ton of videos inside a folder with names that I can't change. I want to be able to quickly view through the videos, starting from the oldest video to the newest video. Surprisingly, it is ...
1 vote
0 answers
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ffmpeg subtitles does not copy text, only timestamps when converting ass to srt

I've been trying to convert an mkv to mp4 without loosing subtitles, however nothing has worked so far. I've narrowed it down to some sort of bug (I think). I can extract the subtitles from the mkv to ...
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-2 votes
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Service for 24/7 streaming with low-latency that can be displayed on web browser [closed]

I want to display a video stream on my site that is running 24/7, the stream must be allowed to have html elements over the stream (in terms of TOS) and latency must be less than 5 seconds. My current ...
0 votes
1 answer
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How to copy audio & video streams without re-encoding in GStreamer?

In ffmpeg you can use "-c:a copy -c:v copy" to copy audio & video streams without re-encoding the output file, this is the way if you want to make little details in shorter time, like ...
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15 views

Why is the audio quality in a recorded Zoom video worse than during the live Zoom session?

Several times now when having Zoom calls (and recording them), the people on the other side say that I sound good and clear, but when listening back to the recorded video MP4s, my own audio sounds lo-...
1 vote
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Demux video and KLV data from MPEG-TS stream, frame-by-frame, in sync

I need to demux the video frames and KLV data from an MPEG-TS stream in sync, frame-by-frame. The following command to demux the KLV data and outputs a text file with the KLV data. gst-launch-1.0 ...
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1 vote
1 answer
25 views

Unable to find a suitable output format for 'copy' copy: Invalid argument - ffmpeg Error

I'm trying to get the video and first voice channel with converted AAC. Also trying to add a subtitle. The command I've used is: ffmpeg -i yourmkv.mkv -i yoursubtitles.srt -map 0:v -map 0:a -map 1:s -...
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-1 votes
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"rewind after playing" vs "loop until stopped" in powerpoint videos

What's the difference between these two checkboxes? they seem the same to me. The description on https://www.customguide.com/powerpoint/modify-videos-in-powerpoint says: Loop until Stopped: Repeats ...
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How to properly reencode videos for YouTube shorts with FFMPEG

I have tried many encoding and everytime YouTube app is saying unable to preview video when I try to upload my video as YouTube shorts The app is able to see tiktok generated output file, however I ...
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1 answer
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compressing media files while preserving metadata

I have tons of phone media backup, and I want to reduce their size by compressing them. For example compressing video files by encoding them to x265 codec, and for the photo files to lossless JPEG, ...
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1 answer
35 views

ffmpeg and PowerShell - trim video with text file

I have a folder with a lot of videos that need to be trimmed at the beginning and I also have a text file with the time where the video must start: Video_001.mxf Video_001.txt Video_002.mxf Video_002....
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ffmpeg .3gp file from Twilio (MMS) to .mp4 audio plays too fast or broken

Trying to transcode a .3gp file that was received from Twilio into .mp4. Transcoding works, but the audio is severely broken. Almost like it is playing back too fast. The video is 17s and audio only ...
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1 answer
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Windows 10 Movies & TV app opens up to a black screen with no trackbar or menu options

figured I'd try my luck asking here, since google gave no helpful results. It's as the title suggests, Windows 10 Movies & TV app opens up to a black screen with no trackbar or menu options, but ...
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video + "streaming" spikes CPU on Mac

For the last 6-8 months, I've been having an issue where "video streaming" spikes my CPU on my Mac. This is a 2019 16" MacBook Pro with 2.6GHz 6-core Intel, and 16GB Ram (I don't ...
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1 answer
39 views

ffmpeg 3D conversion - EAC stereo (Youtube) to Equirectangular stereo?

I've had success with converting monoscopic equiangular cube maps (EAC) videos, but I can't get the filters to work for stereoscopic. There's an example in the ffmpeg manual in the v360 filter ...
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22 views

Using ffmpeg to record two video inputs into one file

I am working on a few strings of commands in order to allow me to record gameplay footage to my PC, I've figured out quite a number of things, purely through trial and error, but have ran into a bit ...
0 votes
1 answer
31 views

ffmpeg. Render file with transparent background

I have the next scheme of tracks. I need to render that tracks to one track with ffmpeg. enter image description here After rendering it's should looks like enter image description here I want to use ...
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1 answer
36 views

Video Scheduler Internal Error

I have an Nvidia GTX 1660ti graphics card which I bought about 3 years ago. Recently I've been experiencing the "VIDEO_SCHEDULER_INTERNAL_ERROR" BSOD. As soon as I open up chrome, edge or ...
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Is there any ffmpeg or Avidemux filter to remove this kind of glitch?

I record gameplays with ffmpeg, and with this specific game I get this kind of graphical glitch (most graphical elements are fine but text labels disappear for just one frame). It happens randomly ...
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14 views

Auto delete video after uploading on youtube

Is there any tools that will auto delete video from my hardrive after I uploaded it on youtube? I uploading tens of videos regularly and it often hard to see what I can delete and what not.
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34 views

FFMPEG Stream to network port

I am searching around for 2 days but didn't find a solution. Is it possible to stream a video to a local network port with ffmpeg? My goal would be, to capture a remote stream, convert it and send it ...
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1 answer
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Open .mp4 files in Adobe Media Encoder through a batch file

I would like to create a .bat or PowerShell script that loads all the .mp4 files from the folder where the script is in Adobe Media Encoder, the aim is to facilitate the day-to-day workflow. I built ...
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14 views

Resize movie .m2v 576.i widescreen

I would like to convert a 720x576 widescreen, interlaced .m2v movie into an interlaced mpeg file. This conversion should be uncompressed, with a 1024x576 resize to account for the widescreen. The ...
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6 views

ffplay/lavfi: How to play dshow?

I am attempting to playback 3 x dshow devices (Logi Brio webcams) with the hstack filter. I can successfully playback local .mp4 files with the following command, but I'm struggling to bring the dshow ...
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12 views

Is it possible to control browser video playback with key macro and not lose focus from current program?

Here's my scenario: I've got a gamedev.tv (or youtube, whatever) page open on one screen playing a tutorial video. On my other screen is Blender or Unity, whatever it is I'm learning. I need to pause, ...
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53 views

Set different subtitles colors/brightness for sdr/hdr content respectively with mpc-be?

I use mpc-be to play videos. One annoying issue is that the subtitle's colors/brightness I set for SDR content become too bright when I change to play HDR content. So I have to change subtitle's ...
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19 views

Is it possible to remove X seconds, concat and watermark in the same command of ffmpeg?

I know I can remove X seconds from the video and add the watermark by using -ss X and -i logo.png -filter_complex "overlay=main_w-overlay_w-10:10" Can you also concatenate a new video to the ...
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Dell P170S monitor shows vertical red, pink, blue or green lines upon watching youtube

The video that shows this best is this one, at around 0:16. The red lines pass across the screen left-to-right. They also appear and disappear. I am using KDE Plasma Manjaro on a Raspberry Pi 400, and ...
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How the options to set/unset a default subtitle stream interact?

Using ffmpeg. Say I have an input video file with several subtitles, one of them being flagged "default" (say the 0:s:1 stream, that is the 2nd subtitle stream). I am copying all of them: -...
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0 votes
1 answer
36 views

FFmpeg overlay image behind object

I have a video, that has a scene I need to overlay a photo. The scene looks like this. I've done simple overlay in the middle of the picture with ffmpeg -i demo.mp4 -loop 1 -i image.png -...
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63 views

Set default subtitle language based on language code (eng, spa, etc.), not the stream specifier

I batch downloaded videos from a channel, but the subtitle languages available for each video are not consistent. Is there a way to set a default subtitle using the language code (e.g. eng, spa, fra, ...
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ffmpeg - How to interpolate frames at a single instance in a video?

I have a 5 second video with 60 fps. It is a single take shot except a minor cut at 00:00:02.208. I have found some resources that use interpolation in the entire video in order to increase frame rate ...
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96 views

How to download sections from youtube videos from command line with bad internet

I want to download certain sections from a youtube stream, currently I'm using this command to get the job done: yt-dlp --download-sections "*30:15-1:40:25" $LINK the problem is that ...
0 votes
1 answer
64 views

how to do input file name same as output file name (ffmpeg)

ffmpeg -i "D:\aaaa\bbb\cccc\dddd\abc.ts" -frames 1 -vf "select=not(mod(n\,18)),scale=200:100,tile=12x12" "D:\aaaa\bbb\cccc\dddd\tile.png" I want to ask that how can I ...
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37 views

ffmpeg/ffprobe won't detect the language of a WEBvtt (subtitles) file

A WEBvtt subtitle file starts with a few header lines, and one of them indicates the language: WEBVTT Kind: captions Language: en 00:00:09.977 --> 00:00:11.563 I'd like you to take a look at this ...
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0 votes
0 answers
36 views

Muxing HLS/M3U8 Sstream as MPEG-TS

all! I have a link to a live stream that I need to mux down into an mpeg-ts format. Problem is, it skips heavily, freezes, and even starts playing segments of the stream before the last one finishes ...
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0 answers
17 views

File bitrates unknown/missing after applying ffmpeg operations

Recently, I have been doing some ffmpeg operations on some video files whether it's to extract out audio or convert its codec. The output files' bitrate is always go unknow due to some reason. I'm not ...
2 votes
0 answers
47 views

Retrieving per-frame time difference from ffmpeg/ffprobe

I am attempting to reconstruct velocity information of an object from iPhone videos, and so I am interested in determining the time difference between frames. From what I understand, iPhone (HEVC ...
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15 views

How do I batch stack one video with a set of another videos in ffmpeg?

I have several mp4 files I am trying to combine into new videos. What I want to do is this without typing out the command a billion times: ffmpeg -i file1.mp4 -i file2.mp4 -filter_complex vstack ...
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Xfade not getting applied on the last clip when merging 10 clips

I am facing issue while applying xfade on multiple videos using complex filter graphs, fade is always getting missed at the last clip of the sequence, is this a limitation of ffmpeg, Can some please ...
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0 answers
28 views

Is there a video container format (mainstream or experimental) that can properly transmit Black Mirror's Bandersnatch?

Black Mirror's Bandersnatch From Wikipedia: Black Mirror: Bandersnatch is a 2018 interactive film in the science fiction anthology series Black Mirror. It was written by series creator Charlie ...
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FFMPEG How to copy stream but limit upload bitrate

I'm using the following command to copy a video stream and push it to an rtmp URL: ffmpeg -re -i "http://example.com/index.m3u8" -g 50 -c copy -bf 0 -b:v 2M -maxrate 2M -bufsize 1M -f flv &...
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16 views

Subtitles - Muxing but removing info from title

So I've got some files being muxed into an mkv file and I add a subtitle to it. I want to remove the [gre] (ass) part from the following subtitle info (title): Example Here Code: ffmpeg.exe -i video....
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0 votes
1 answer
44 views

ffprobe/ffmpeg subtitle index mismatch

So this is driving me insane. I have a video file, input.mkv, with several subtitle streams. I want to hardcode one of these subtitle streams into a new file. I usually do this like so: inputfile=&...
1 vote
0 answers
137 views

How can I smooth/deblock a video file with FFMPEG?

I am not interested in upscaling my video file, but am instead interested in just encoding it to smooth out the pixelation of my files. My files are from a T2i DSLR and I'd just like to smooth out the ...
0 votes
0 answers
30 views

Video Format large screen wrong

we have problems with some videos beeing played in media-player. media-player reads the video size wrong. The videos are displayed too large, say for large screen like today. But the videos are for ...
0 votes
0 answers
15 views

Cutting out static frames with FFmpeg

I need to deal with video that has missing frames. It results in a video that jumps out this part when playing (though frames are shown as duplicates) Is there a way I do with FFmpeg either cutting ...
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0 votes
0 answers
83 views

mp4 encoded with ffmpeg not displaying on chrome

I am using the command ffmpeg -i input.mp4 -c:v libx265 -vtag hvc1 -c:a copy output.mp4 in order to compress my mp4 files. This is the output: ffmpeg version 5.1.2 Copyright (c) 2000-2022 the FFmpeg ...
0 votes
1 answer
100 views

Append one MP4 file to other MP4 file using FFMPEG

I would like to concatenate TWO MP4 files without re-encoding. Both have same characteristics. As suggested on some forums, I use a following command: "C:\Program Files\ffmpeg\bin\ffmpeg.exe"...
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