Questions tagged [video-conversion]

The video-conversion tag covers software & formats related to converting videos from one format or container to the other.

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28 views

FFMPEG warning pkt->duration = 0

I'm facing a strange WARNING message in the logs of FFMPEG when trying to capture an HLS stream. This is the log with some information changed to avoid problems with my boss: [info] Input #0, hls, ...
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9 views

Dvi-D SL to HDMI cable connected to Dvi-D DL port on 970, PC sees the tv and I can use SLOBS Output to see its detected, but I get No Signal on screen

I have Dvi-D Singlelink to Hdmi cable from insignia and connected it to the dvi-d dual link port on my GTX 970. It's detected by the computer and has an input, I can see it through the Streamlabs ...
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30 views

Why does my GPU fail to detect a monitor connected through a DP-HDMI adapter?

I have a Gigabyte 1080Ti with 1x HDMI and 3x DisplayPort outputs and I'm trying to do a triple monitor setup with three HDMI monitors (LG 23MP68VQ) using two DisplayPort to HDMI adapters, but for some ...
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37 views

resize video to fit into 16:9 with blurred background

I have random videos with bad aspect ratios e.g. recorded in portrait mode on a phone and I want a 16:9 video. I found a similar a question Resizing videos with ffmpeg/avconv to fit into static sized ...
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38 views

In what order should I use stabilization and compression with ffmpeg?

I shoot videos of soccer games on a Canon Vixia which records at 60fps HD with h264 compression. From the camera it results in 20GB files which I have been recompressing (to save on storage and ...
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20 views

FFmpeg: Apply Unique Palette To Every Frame of a .GIF?

⋯ Have .GIF with duration of 10 seconds at 15fps, for a total of 150 frames. Want to use different palette for every frame. Have palette files: p1.png, p2.png, p3.png etc … p150.png - What's my ffmpeg ...
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41 views

m3u8 to mp4 lossless conversion with VLC or any other free software on Windows

I have read this and several other posts on this site; however, none has answered my question: I'm aware, that I can convert m3u8 streaming file to the mp4, and I only do this with VLC player on ...
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36 views

ffmpeg mediocre conversion quality from DVD

I am trying to convert a DVD that I own into mp4/lib265 format. To test the quality out I am only converting the first two minutes of the input video (which is a concatenated vob file). The source ...
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22 views

How can I reduce the file size of a video encoded with wmv2 in ffmpeg?

I have some videos of a slide presentation with audio and need to put them in a wmv container. These videos are intended to be viewed with Windows Media Player. I initially made the mistake to use the ...
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65 views

Ffmpeg merging videos from images with normal video + audio

Using fluent-ffmpeg i'm making 3 videos from images and then i'm adding audio to them, then i'm merging them with a normal video that has it's own audio but i'm getting input pad error. If i add audio ...
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11 views

Use Handbreak to copy DVD from specific time

I have a DVD of home video I made several years ago. I am trying to convert it to MP4 for editing. One of the VOB files appears to have a an error in it. The DVD has 2.05.23 of footage but cuts off ...
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226 views

SBS 180Fisheye to equirectangular?

I'm doing some recording with an output of fisheyed 180 degree stereoscopic SBS. I am hoping there is a command that will allow me to convert these videos into a equirectangular format. I appreciate ...
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24 views

Efficiently streaming h264 with ffmpeg

I'm writing an app which streams video from an android phone with media projection. The video is being encoded as raw h264, and the complete frame is put into a packet and sent to a desktop pc. On the ...
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27 views

Screenshots to video using ffmpeg

I have screenshots that are taken .25 seconds apart, that I'm trying to combine into a video. No matter what I try it ends up too fast or too slow/choppy. I've tried the following commands. ffmpeg -...
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98 views

FFMPEG: Getting error ./index0.ts Invalid data found when processing input file

I am getting this error when I run ffmpeg: ffmpeg version 4.3.2-2021-02-27-full_build-www.gyan.dev Copyright (c) 2000-2021 the FFmpeg developers built with gcc 10.2.0 (Rev6, Built by MSYS2 project) ...
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36 views

ffmpeg drawtext timecode changes duration

normally when I change framerates, I use Adobe Premiere and interpret video material as new framerate, so the duration changes. Thats fine. But because this is a mkv file I wanted to convert, I use ...
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45 views

How to ffmpeg encode using same codecs and parameters as certain file has?

I need to merge two different video files and I am using LosslessCut for the task. Yet it says that the files need to have the same codecs, dimension, framerate. Source is mkv V_MPEG4/ISO/AVC with ...
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51 views

To to make “Match Source - High Bitrate” adobe encoder settings with ffmpeg?

The problem Hello! I'm new ffmpeg user and I'm trying to convert uncompressed avi from After Effects to mp4 file. The problem is that colors are bad compared to Adobe Media Encoder "Match Source -...
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43 views

How to open or convert a .3gpp video file

I'm trying to remove background noise from a video/audio file. I can't even open/import it. Audacity suggested to download FFmpeg, but I am still unable. It says, "Audacity did not recogize this ...
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48 views

ffmpeg adding audio to videos file duration issue

I am adding a background music mp3 file in the existing video file using the following ffmpeg command ffmpeg \ -i ./output/output.mp4 \ -i ./output/audio-loop.mp3 \ -filter_complex \ "[0:a]apad[...
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85 views

Why using b-frames does not reduce the size of my video (using ffmpeg and nvenc)?

I have this command ffmpeg -i input.mp4 -vcodec h264_nvenc -rc vbr_hq -cq 19 -rc-lookahead:v 32 -preset slow -profile:v main -c:a copy output.mp4 For my one-minute test video, it produces a file ...
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33 views

FFMPEG conversion from .mkv to .mp4 fails for subtitle

I am a relatively novice ffmpeg user who is trying to convert an .mkv of kill bill 2 to .mp4 for better playback on idevices. The issues I am having revolve around the subtitles (2nd stream) needed ...
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16 views

How to autocaption a video?

I want to play videos and autocation them. I have some training videos and I want to see speech to text like what we have in youtube.(to show text under the video) I don’t want to upload files ...
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19 views

ffmpeg: how to get program descriptions from transmission stream?

I'm getting off-air MPEG2 transmission streams from HDHomerun hardware and recoding it with ffmpeg. The HDHomerun hardware can give me very brief strings that describe the programs: % ...
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40 views

How to convert exe to video?

I have a video with .exe extension. I tried renaming to to mp4, avi, mkv, ts and many more, tried opening it with vlc, none of which worked. I got the exe when I downloaded a video from a site using ...
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45 views

Two files with apparently the same codecs, but one doesn't work on my TV

So, I have these two files. File 1 works perfectly on my TV, but file 2 doesn't (TV says file format not supported). But checking the MediaInfo, it appears that the codecs are the same. Am I missing ...
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26 views

Inserting video clip into another video makes the inserted part run twice as fast and hold at last frame in ffmpeg

Here is what I did. I create a file called concat.txt: file 'original.mp4' inpoint 0.0 outpoint 2.0 file 'middle.mp4' inpoint 0.0 duration 24.0 file 'original.mp4' inpoint 26.0 Then, I run the ...
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66 views

Use FFMpeg concat demuxer with multiple files with/without audio tracks

I'm trying to combine multiple files with FFMpeg's concat demuxer. The issue is that some of these files don't have an audio track and others do and I don't know which do and which don't. For example: ...
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20 views

FFMPEG commands for MPEG4 video Mac OS 9

I am doing some work on mac OS 9, and am looking to convert some files to mp4. However, I cant seem to get the right settings in FFMPEG. Currently I am using the following: ffmpeg -i video.mp4 -vcodec ...
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17 views

Distorted Audio when converting Video File which has been captured using Safari 14 Live Capture

I have a video file which has been captured clientside on a Safari (14.0) browser using MediaRecorder & MediaDevices, the video is captured as an mp4 file. This video file plays correctly when ...
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36 views

Creating a zoomed mirror effect

I am trying to create a zoomed mirror effect of a video s that the transformation goes something like Input -> Output ______________ ________________________________________ |Top Section | ...
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1answer
44 views

combine 4 video with delay side by side using ffmpeg

I have at least 4 video from video conference crated by meetecho/janus-gateway Janus create two mjr video and audio file for each user, first i merged them into one webm file, then convert all to 500*...
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77 views

ffmpeg concat demuxing duration and inpoints

I have many h265 clips, all six seconds long. Now I want to string these together with ffmpeg (preferably without reencoding), but only use the parts from second 2 to 4 of each clip. I do this with ...
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29 views

FFmpeg command not working?

I want to convert mp4 file to hls format Is something wrong with this command Please Let me Know String exec = "-y -i "+mediaPath+ " -preset slow -g 48 ...
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15 views

Do GPU Extensions have their own cores?

In Taskmanager my GPU (Geforce GTX 980) show own Metrics for 3D, Video En-/Decode, CUDA and several other Extension. My Question is if all those Extensions are working on their own or if they somehow ...
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209 views

How to use FFmpeg blend/difference filter mode to identify frame differences between two videos

I'm trying to verify if a video compressed with a lossless codec is mathematically identical to the raw video. In How to compare/show the difference between 2 videos in ffmpeg?, an answer described ...
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445 views

What are the differences between the HuffYUV and ffvhuff codecs in FFmpeg?

Doing ffmpeg -codecs | grep -i huffyuv shows that my FFmpeg build supports three different versions of the HuffYUV lossless video codec: DEVI.S ffvhuff Huffyuv FFmpeg variant DEVI.S ...
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78 views

How to make a three times smaller video from a large video as fast as possible with Handbrake?

I have a good quality black and white old movie in MKV format of 11GB. My intention is to keep the original and to create smaller versions for practical reasons when watching on various devices that ...
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61 views

ffmpeg add music to video that might also have audio (or might not), without loosing the existing audio

I am working on a script that should allow me to add an audio to a video, that video might or might not have an audio stream, when it does have, I can just use filter_complex and amix to combine the 2 ...
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24 views

does handbrake not reduce video quality while compressing videos?

I was just looking for several ways to compress videos, and I found some saying that we can compress videos with handbrake without loss in quality. As far I know compressions there are always quality-...
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1answer
36 views

FFMPEG produces corrupted video outputs on AWS Lambda only

I've been trying to use ffmpeg with AWS Lambda to transcode videos for web. I myself zipped and uploaded ffmpeg and ffprobe as a layer, after testing both of them on my local machine. The exact same ...
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141 views

error in converting RAW yuv into mp4 video with ffmpeg

I am trying to convert raw yuv video into mp4 using ffmpeg. ffmpeg -f rawvideo -vcodec rawvideo -s 1920x1080 -r 25 -pix_fmt yuv420p -i Beauty_3840x2160_120fps_420_10bit_YUV.yuv -c:v libx264 -preset ...
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1answer
55 views

Why are ffmpeg processed videos per default multiple times smaller in file size than the input file?

I have a mp4 movie of 1:15min length, made with the Sony Alpha 6400 4k camera. It has a size of 528MB. I want to cut it using ffmpeg. Although I only cut a few seconds, the new video was much smaller. ...
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166 views

FFmpeg incompatibility

I start doing my final project with raspberry, in this step professor asked me to take a video with raspberry pi B3+ and convert some feature like codec and container in the raspberry side and then ...
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1answer
351 views

ffmpeg hangs when using -fflags +genpts

I'm trying to remux a .vob file (which I got using vobcopy) into a mp4 container (mkv would do it as well) using ffmpeg 4.2.4-ubuntu0.1. Initially the remuxing finished, but I got these errors: [mp4 @ ...
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145 views

No audio after converting using AVS Video Converter & FreeMakeVideo Converter

I installed K-Lite Codec Pack some month ago in my Windows 7 Ultimate machine. As far as I know, every thing about Media Player Classic & KMPlayer is ok. I am trying to to convert a mkv file to ...
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61 views

Converting MP4 video via copy to an MKV to add subtitles from an results in jittery output

I am converting from MP4 to MKV to add subtitles. Everything completes correctly but the results has a slight jitter. When I run ffprobe the tbn (time base number) is different. I have tried ...
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193 views

Concat many video: wrong out FPS & audio Pitch

I have a process like this: i have N input video; I cut & transcode them using the following code: ffmpeg.exe -c:v h264_cuvid -resize 1920x1080 -noaccurate_seek -ss 00:00:04.000 -to 00:00:44.240 -...
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2answers
66 views

GPAC MP4Box fullrange flag

A few years ago I was trying to encode some GoPro videos with Handbrake to reduce their file size and store them. After a few attempts, I noticed that the colors on the encoded videos were looking a ...
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351 views

Converting DVD video to .mp4 - getting skipping video and audio

I'm using Handbrake to rip old DVDs to .mp4 video, and the result I am getting is a video file that skips every second or so and repeats a previous section of the audio and video. Incidentally I got a ...

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