Questions tagged [video-codecs]

General questions about video codecs (like x264, DivX, et cetera), their installation, or comparisons.

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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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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 ...
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adding subtitles filter without changing video codec

I have a proress 4444xq video that I need to burn some subtitles in. The subtitles are in the .ass format (advanced substation alpha). I want to burn the subtitles but keep the video in prores 4444xq (...
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Wecamoid Codec Configuration for Webcam

I bought and installed a webcam: NexiGO N30-AF. I'm currently using Ubuntu v21.10, and initially planned on using Cheese, as it worked in the past, but it seems to have a universal bug, as you can ...
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18 votes
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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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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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930 views

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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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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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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682 views

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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4 answers
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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 votes
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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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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 ...
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1 answer
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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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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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3 votes
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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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5 votes
2 answers
13k views

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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393 views

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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2 votes
0 answers
917 views

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 answer
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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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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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5 votes
1 answer
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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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1 vote
1 answer
3k views

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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1 answer
1k views

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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1 vote
0 answers
319 views

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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1 vote
2 answers
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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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2 votes
1 answer
3k views

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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3 votes
2 answers
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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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-2 votes
2 answers
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MP4 files I download look pale and have colors misplaced [closed]

Ok, first things first: here's a screenshot from a recap I've downloaded. I guess if Neil Patrick Harris would host the ceremony back in 70s it'd look like that. There's this obvious offset of the ...
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2 votes
1 answer
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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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1 vote
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418 views

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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1 vote
1 answer
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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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6 votes
1 answer
11k views

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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1 answer
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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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21 votes
1 answer
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ffmpeg and the 'unable to find suitable output' error

I'm trying to convert a large MKV to an old-school AVI file. I'm trying this: ffmpeg -i video.mkv -s -codec:v mpeg4 -bf 1 -b 2567k -mbd 2 -g 300 -flags cgop -acodec copy video.avi but I get [NULL @...
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5 votes
3 answers
7k views

Play WTV files on non-media center PC?

I have a Home Theater PC (HTPC) running Windows 7 Media Center. I'm using SiliconDust CableCard adapters to record programming like a DVR. Works great! I'd like to view some of the recorded programs (...
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13 votes
2 answers
38k views

Convert video with vp9 codec using ffmpeg

I am trying to convert input.mp4 video to output.mkv using vp9 codec. I have install development version of ffmpeg via: brew install ffmpeg --devel. ffmpeg -i input.mp4 -vcodec vp9 output.mkv But I ...
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2 votes
1 answer
3k views

How to display uncompressed gray video?

I have video file that is capture of uncompressed video stream. Its media info is as follows: Format : AVI Format/Info : Audio Video ...
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