Questions tagged [video-codecs]
General questions about video codecs (like x264, DivX, et cetera), their installation, or comparisons.
85
questions
1
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0answers
41 views
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 ...
0
votes
1answer
43 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 ...
0
votes
0answers
86 views
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 ...
1
vote
1answer
105 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?
0
votes
0answers
60 views
av_read_frame of ffmpeg in windows always returning random packet.stream_index
I'm using ffmpeg to decode an rtsp stream, the av_read_frame is always returning random value on packet.stream_index.
The stream have only 2 index, 1 video and 1 audio respectively on streams[0] and ...
0
votes
0answers
1k views
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 ...
1
vote
4answers
440 views
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 ...
1
vote
1answer
128 views
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 ...
0
votes
0answers
173 views
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:
...
2
votes
0answers
269 views
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.
0
votes
0answers
897 views
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 ...
-1
votes
1answer
135 views
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 ...
0
votes
0answers
27 views
LMDE Cindy new installation but having codec problems
I just changed yesterday from Mint 17 to LMDE. It's the usual round of installations and file transfers but then I arrived at this block.
Video players that don't play videos, and yes, I got VLC. So ...
0
votes
0answers
349 views
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 ...
1
vote
1answer
355 views
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 ...
1
vote
0answers
804 views
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.
0
votes
1answer
1k views
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 ...
2
votes
2answers
2k views
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=...
4
votes
2answers
10k 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.
...
0
votes
0answers
344 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 ...
2
votes
0answers
789 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" ...
1
vote
1answer
2k views
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);
.
.
...
0
votes
1answer
130 views
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?
5
votes
1answer
3k views
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 ...
1
vote
1answer
2k 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 ...
1
vote
1answer
835 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 (...
1
vote
0answers
315 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 ...
1
vote
2answers
3k views
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 ...
1
vote
0answers
14k views
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 ...
2
votes
1answer
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 ...
3
votes
2answers
8k views
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:
...
0
votes
0answers
2k views
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 ...
-2
votes
2answers
1k views
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 ...
2
votes
1answer
1k views
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 ...
1
vote
0answers
404 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 ...
1
vote
1answer
2k views
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 ...
0
votes
1answer
62 views
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?
5
votes
1answer
7k 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 ...
0
votes
1answer
3k views
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 ...
19
votes
1answer
108k views
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 @...
5
votes
3answers
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 (...
12
votes
2answers
32k 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 ...
2
votes
1answer
2k 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 ...
4
votes
1answer
29k views
VLC does not support the audio or video format “undf” in Linux
When I play some avi files in my system with VLC I get this error:
No suitable decoder module:
VLC does not support the audio or video format "undf".
Unfortunately there is no way for you to fix this....
2
votes
3answers
302 views
RAID, SSD or alternative software for playing back raw 1080p60 video?
I am a researcher working on video compression. As part of my work I need to play back raw (i.e. not compressed) video at the correct frame rate for participants to view as part of a compression ...
1
vote
3answers
3k views
Can I add MKV support to Windows Media Player in Windows 8 without installing anything?
Is it possible for me to just copy a codec file into a directory without having to install some janky codec pack filled with all kinds of nonsense? I just want to be able to play MKV files without ...
1
vote
3answers
837 views
Partial video editing without transcoding
is it possible to do partial edits to each frame of video (e.g. adding a logo) without transcoding? And save video with the same format?
I mean, pixel positions of each frame are calculable; so is it ...
1
vote
1answer
3k views
How to use a codec without installing it (portable)
I'm using CamStudio Portable and there aren't any good codecs integrated.
So additionally you need to install a good one like ffdshow tryouts.
Q1: It is possible to use a codec without installing it ...
0
votes
2answers
792 views
Lossless compression codec for looped image sequence
I've got 14 PNG images (here but not important) that I want to put into a 2 minute loop at 15 fps.
Photoshop CS3 seemed the best tool for this so I opened them as an image sequence* and did File -> ...
8
votes
2answers
19k views
What video codec puts the CPU/GPU under the least possible load while decoding?
I'm interested in transcoding a video I own for use as a screensaver; size isn't an issue, but I want to stress the processor and video card as little as possible as far as video decoding goes.
What ...
