Questions tagged [video-codecs]
General questions about video codecs (like x264, DivX, et cetera), their installation, or comparisons.
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Quantify Compression Artifacts in Videos? [duplicate]
Suppose I want to compare the visual quality of various video codecs, and I want a way to quantify it. Is there an easy way to do this?
I have the lossless source file, so a rudimentary way might be ...
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How to reset the Windows 10 video codecs?
I am using Windows 10 (x64). I have installed it from the latest ISO available in April - IIRC it was a 2022-11 build.
Three days ago I found the computer stopped (I leave it always in suspended mode) ...
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Invalid PNG signature FFmpeg
I am using FFmpeg to generate a video from a set of images in .png format.
I used the below command to extract the images from a video.
ffmpeg -i RGB.mkv -map 0:0 -vsync 0 -c:v copy RGB-%04d.png
I ...
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0
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Facing delay in audio while using ffmpeg with h264_nvenc encoder
I am trying to capture my windows10 desktop with desktop duplication api and on-gpu D3D11 textures, in the form of ffmpeg D3D11VA frames @60 fps. Required command is given here. On top of that I am ...
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One IP camera playing, one isn't. Codec incompatibility?
I am new to video codecs and would like to understand my problem better.
I am using Siemens camera display in TIA V17 to display the RTSP streams of some IP cameras...
IP camera A: Supports H264 but ...
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Why does running Netflix not cause a bump in video decode?
I don't have any performance issues - just curious about the internals of web browsers.
My understanding is Netflix uses H.264, VP9, or against some devices AV1. I wasn't able to figure out which ...
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Trouble with splitting a .mkv file in half with FFMPEG using one command, had to do it one at a time with a slightly different command
So I have a ~400GB .mkv file I wanted to upload to YouTube, unfortunately for me YouTube has a 256GB limit. So I Googled if I could split the file with FFMPEG and found the following article (FFMPEG ...
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1
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How to retrieve codecs informations in CLI on VLC?
Is there a way to retrieve codecs information in command line using VLC ?
I want the same output as what we get with "Ctrl + j" when a video is loaded.
I found only solutions using third ...
0
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1
answer
560
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FFMPEG - Display per frame information for an AV1 encoded video
So I am trying to view per frame information for an AV1 encoded video using ffplay with the following command:
ffprobe -show_entries frame=pict_type,pkt_size,pkt_pts_time -select_streams v -of csv=p=0 ...
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19
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1
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What is the technical reason for modern graphics cards only supporting four monitors?
In January 2022, consumer-grade graphics cards support only four monitors each in the higher tiers. What is the technical limitation that dictates only four?
DisplayPort 1.4a MST can support 32.4 Gbit/...
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How to convert .DXA file with ffmpeg
I have .dxa video footage that I'd like to convert to a more standard format with ffmpeg. By doing research I found some people reccomend converting to .yuv first, then convert from .yuv to .mp4. (...
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Valid containers (mp4, mov, avi, mkv, web) for codecs in ffmpeg
Typically I use the following codecs - h.264, h.265, vp9, dnxhd, cineform and prores. I consider the following to be valid containers for these codecs.
Codec MP4. MOV. AVI. MKV. WEBM.
H.264 ...
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1
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ffmpeg and codec utvideo interlaced
i have ffmpeg version 2021-01-09-git-2e2891383e-full_build-www.gyan.dev Copyright (c) 2000-2021 the FFmpeg developers.
Command : ffmpeg -h encoder=utvideo
gives :
gbrp gbrap yuv422p yuv420p yuv444p
I ...
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1
answer
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Sudden HEVC / H265 failure with Windows 10
My 2016 production Windows 10 Pro (Version 20H2) computer suddenly stopped playing HEVC videos properly. I need this feature in my computer because of my work and entertainment purposes (other that it ...
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ffmpeg is complaining about ACT flag violation in some of our DNxHD videos. Could this be safely ignored? Why?
We've been using ffmpeg/ffprobe for checking video file integrity. If ffmpeg returns anything in its stderr, we'd know something's not right.
For some videos, an error like this will show up in the ...
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1
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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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0
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Issues using ffmpeg and easy screen: Pipe is broken
I am trying to record my screen using easy screen. I think it uses a CLI tool called ffmpeg and just provides us with a GUI to use the CLI version. Am I correct in thinking this?
Anyway, when I try to ...
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1
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Which ffmpeg video codec should I use to create MP4 files compatible with Windows Media Player 12?
How do I determine the appropriate ffmpeg video codec to use in order to create MP4 files compatible with Windows Media Player 12 on Windows 10?
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ffmpeg encoding requested yuv420p but got yuvj420p
When I encode with ffmpeg on Ubuntu 18, the default encoder h264 (libx264) uses by default the pixel format yuvj420p.
But https://ffmpeg.org/doxygen/trunk/pixfmt_8h_source.html says that ...
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Improve quality of video recording in Windows 10
When I capture the video with Win key + G, the quality of the video is awful. To give you a rough idea about the awfulness of quality, here is a screenshot of the original image vs capture one:
I ...
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How to convert .s files to .mp4 files
I have .s video files from a DVR backup. I can only view them with an MCD player.
I need the videos in a format like .mp4 or .avi or any other format so that I can process them. I have tried using ...
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How to play 3GP video files?
I've got an Android Umidigi smartphone that records 3GP video files. I'm trying to get these to play on a Windows 7 x64 machine.
For these video files, GSpot displays the following information:
...
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Extract Mime Type codecs for MediaSource using FFprobe
I have to extract the codecs e.g. 'video/mp4; codecs="avc1.42E01E, mp4a.40.2"' for the MediaSource API. How can I do this strictly with FFprobe/FFmpeg tools? Do not suggest other tools please.
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MP4 video file does not play audio in Quicktime on macOS 10.14
Consider the following MP4 audio file, with the following codec information (Cmd+I in VLC):
When I open this file with QuickTime, or QuickLook, this file does not play with audio. However, when I ...
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1
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Generate mpeg 4 file with specific format with h.264 codec
I need a specific format in my .mp4 video file:
1. Only I and P frames
2. Each P frame based on only the previous (temporally) I frame
3. An I frame every second or so
Is it possible to generate ...
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477
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Import MP4 media in camtasia studio
I'm editing my video and I wanted to add outro in my video at last.
But the camtasia studio is showing error on importing MP4 format:
Cannot load file 'filename.mp4'.
It is either unsupported ...
user342714
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Windows Media Player plays only audio from MPG 320x240
My OS is Windows 7 Ultimate 64 Bit. I have a few video files in the format of MPEG. Some are 320x240 frame size and other are 720x576.
Both are .MPG extensions.
The default Windows Media Player (I ...
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How to check list of supported codecs with cmd?
I would like to know how to check list of supported or installed codecs on Windows 10 using command line. I did it on ubuntu with ffmpeg -codecs. I don't want to use GUI to know that.
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2
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How do I get Picasa showing MP4 videos?
My research suggests that in order to get MP4s visible in Picasa (on Windows 10) I need to either install QuickTime or a codec pack.
[Edit 16 Jan 2020] To save you trying, it turns out that this is ...
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ffprobe returns codec_type=video for images and text files
I have a directory with many files of different types and want to find out the codec of each video file. This works well with this command:
$ ffprobe -v error -select_streams v -show_entries stream=...
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2
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MP4 corrupted, how to repair?
I recorded two videos on a digital camera. Both videos were saved using identical codecs and settings.
The second video is corrupted, in some way, and I can't open with VLC or video-editing software.
...
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FFMPEG on small, high-noise Image Sequence to Lossless Video
I have a folder of .tifs that are really noisy images (digital images from a microscope). They are also quite small in dimmension, like 260x260 pixels.
I want to turn them into a playable movie that ...
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Using ffmpeg for creating H.265 video compatible with Windows 10
Windows 10 supposedly supports H.265, but I can't get it to play files encoded with H.265, which appears to be the current best format.
I'm running it like this:
ffmpeg.exe -r 60 -i "video_%04d.png" ...
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1
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android ffmpeg create mp4 with bitmaps (no jpg)
on my android app, i have series of bitmaps generate by this method:
public Bitmap createFrame(int i) {
Bitmap bitmap = Bitmap.createBitmap(800, 800, Bitmap.Config.ARGB_8888);
.
.
...
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1
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How do I Uninstall NCH Software Components?
So I have a few components installed for VideoPad from NCH Software Components Download
Is there anyway to uninstall the profiles?
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How can I compress video by taking advantage of its static content?
I have an HD video that is a presentation, so it consists mostly of still images. It's a 50 minute, 200MB MP4 file, downloaded from YouTube.
Is there a way to take advantage of the static nature of ...
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Copy video quality on FFmpeg
I want to use FFmpeg to add a watermark but I want the video will have the same quality. How do I do that?
I tried to use -vcodec copy -acodec copy but was without watermark:
ffmpeg -y -i treino.mp4 ...
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Why do YouTube videos become greyish in Chrome if hardware acceleration is disabled?
Update: One of the tests has shown that the problem persists on certain devices even if the hardware acceleration is enabled. The 4 screenshots below were taken on Windows 10, Chrome 47.0.2526.111 m (...
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MS Expression Studio Fails to Detect MP4 Video
I have imported a H.264 MP4 video file into Microsoft Expression Encoder 4, however when I convert the video to the IIS Smooth Streaming VC-1 format, it only has audio with a green screen. How do I ...
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Problems installing ffmpeg with Homebrew
I get the error when I try to convert mp4 to webm:
Encoder (codec vp8) not found for output stream #0:0
Google search tells me that I need libvpx installed, but I've done that.
I've installed with ...
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Upload Video to Instagram made with Windows Movie Maker
I've made a video using Microsoft's Windows Movie Maker and I've tried saving it as "Recommended for this project", "Android Phone (Medium)" and iPhone. It saves the video as a .mp4 using the H.264 ...
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Specifying parameters to create videos for ffmpeg's concat demuxer (to avoid a large re-encode)
ffmpeg can be used to concatenate files together:
If you have media files with exactly the same codec and codec parameters you can concatenate them [...]
(emphasis mine) My intention1 is to ...
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Determining root cause of strange colors in VLC
Recently I am getting strange colors when playing a video file in VLC. This does not occur all the time, but at random intervals. When I restart VLC the same video file plays fine.
Screen of VLC:
...
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Update Microsoft DTV-DVD Video Decoder
When I see Technical Information for Windows media player. I can see information about Microsoft DTV-DVD Video Decoder (msmpeg2vdec.dll). In some machines I see version as 12.0.9200.16426 and some ...
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Windows Media player Streaming doesn't open all video files on TV?
I stream video from my PC to my Samsung Smart TV. But not all videos seems to be supported.
I have 2 video files that are mp4:
The first I can stream it fine & watch the video,
The second says ...
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0
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VLC player codecs
I got a tablet for X-mas (windows 8) and tried to play some video with VLC on it and most won't play mp4 mkv etc, on my laptop the same files will play in VLC, so I assume it to be a codec problem
I ...
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How to fix missing Media Foundation Microsoft AAC Audio Decoder Transform MFT Windows Server 2k8r2 sp1
I have a Windows Server 2008R2 SP1 VM that has somehow lost its Media Foundation AAC Transform. I discovered this when certain .MOVs with AAC streams were not behaving as expected.
I opened TopoEdit ...
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How to import MXF recordings on FCP?
I have a problem with my MXF files when I was about to import them into FCP7. It refuse to work at all. I tried couple of plug-ins and applications but nothing worked. How could I solve this problem?
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How to reduce latency on FFmpeg video streaming?
On a video streaming application between Linux server (FFmpeg) and Windows client (VLC player), there is a noticeable latency of about 10 seconds.
FFmpeg command:
ffmpeg -re -f v4l2 -i /dev/video0 ...
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Optimum parameters for FFMPEG to keep file size
so the idea is: I want to convert every.single.video I have in a 1 terabyte drive to a format that my Chromecast can play (https://developers.google.com/cast/docs/media) and I'll happily leaving my ...
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