Questions tagged [codec]

A 'coder-decoder' computer program capable of encoding and/or decoding a digital data stream or signal.

Filter by
Sorted by
Tagged with
1
vote
2answers
23 views

What is the difference between lossless and lossy formats?

What exactly are the differences between lossless and lossy codecs? And is one better format better than the other or is it mostly relative?
0
votes
0answers
17 views

Triming ogg files to an exact number of samples

Let me begin by saying that I'm not sure on which site on the Stack Exchange network I should post this, as the central theme is essentially codec internals. Background I would like to be able to ...
0
votes
0answers
11 views

Frame rate (FPS) multiplied by duration (sec) isn't equal to total frames

On a YouTube video stats, apparently, the frame rate is 30 fps: Total video length is 1:32 i.e. 92 sec. Total frames = frame rate x time Total frames = 30 x 92 = 2760 So why are frames reported as ...
0
votes
0answers
4 views

Efficient (small size) lossless encoding of video where just few localised pixels changes every so often

I want to record efficiently (space-wise) a screen area which has certain charateristics, akin to a video presentation of a software : it is a window on my computer where a program runs. Not a video, ...
0
votes
0answers
32 views

How to decode a 2D video with H264 by FFPMEG?

For one of my projects (https://www.cs.tau.ac.il/~amir1/PS/3d.pdf) I need to use FFMPEG, but I am entirely new to C++ so diving into it will take a lot of time. Is there any code/handy resource ...
0
votes
0answers
47 views

What is the difference between .mts and .mp4 video files?

I know that .mts video files use MPEG-4 video compression. But why then don't they just have the .mp4 file name extension? Since they don't, this means they are not digitally nor conceptually ...
0
votes
0answers
21 views

recording uncompressed or > 150000 kb/S video on a smartphone or tablet

Is it possible to record uncompressed or > 150000 kb/S video on a smartphone or tablet? If so, how and what devices are compatible? I am able to do this with cheap logitech webcams, however the ...
0
votes
0answers
18 views

“True” monochromatic/greyscale video format

Sometimes referred to as "RAW" format, an example of which would be the now outdated CinemaDNG - a format that stores pixels in their pre-demosaiced form, as pure light intensity values as ...
0
votes
0answers
26 views

Moov atom not found on Raspberry Pi platform (Linux)

I have asked this question on innumerable sites but I haven’t been able to get an answer to solve my problem. The question Need help to fix a broken MP4 which lacks a MOOV atom Seems to be on point ...
1
vote
0answers
35 views

How to convert Fast Mpeg 4v2 (mp4v) with ffmpeg

I have problem with ffmpeg properly recognizing a video encoded with Microsoft Fast Mpeg 4v2 codec. Apparently it's a software codec. VLC plays the video fine. The codec reported by VLC is: Codec: ...
0
votes
2answers
36 views

Importing uncompressed video into Final Cut Pro without (too much) transcoding

I have recently digitized a VHS tape using VirtualDub. Here is the MediaInfo of the original file. General Complete name : capture.avi Format ...
1
vote
1answer
137 views

How can I put a VP9 video stream into a QuickTime/MOV container?

FFmpeg has no trouble putting all sorts of weird video codecs into QuickTime/MOV containers, including utvideo, hap, snow, ffv1, and cinepak. This makes sense, as it is my understanding that the MOV ...
0
votes
0answers
243 views

Streamable Container for gstreamer with ngnix / RTSP on jetson nano

Im working on this project : https://www.hackster.io/jonmendenhall/jetson-nano-search-and-rescue-ai-uav-9ca547 At  some point I will need to mount my camera (waveshare ; IMX219-77IR) on  top of the ...
1
vote
1answer
12 views

GIF/SVG kind of compression for Video

I am looking for a solution to compress screen recording. Imagine a coding tutorial involving mostly text and windows and almost no graphics other than icons and occasional view of the wallpaper. ...
0
votes
0answers
7 views

HTML5 video lags, but only for certain sections

For this HTML5 video, it runs fine without any playback issues except during a certain clip around the 3:15 mark: https://newtube.app/TonyHeller/X31Kd6s I'm just a simple code monkey and don't know ...
0
votes
1answer
42 views

Can I use ffmpeg to encode a video for Camtasia import?

I'm using ffmpeg to create screencasts. The command looks like this: ffmpeg -f x11grab -framerate 30 \ $(xwininfo | gawk 'match($0, /-geometry ([0-9]+x[0-9]+).([0-9]+).([0-9]+)/, a)\ { ...
0
votes
0answers
168 views

ffmpeg: Unknown decoder 'copy' when concatenating clips

Basically I was following https://video.stackexchange.com/a/15701/26767, which states: This should work faster... ffmpeg -ss 1:00 -t 5 -i in.mkv -ss 2:00 -t 5 -i in.mkv \ -filter_complex "[0][1]...
0
votes
1answer
31 views

How can I find out the codec of a video I have exported from Premiere Pro?

I've exported some videos from Premiere Pro after working on them, but I've forgotten what the codec of the video is. How can I find out the codec of the video? Thanks!
0
votes
1answer
60 views

Hello ffmpeg heroes - please help me with ffmpeg/ffprobe commands to decode a video for me?

I have a sample.mp4 which is currently not playable on VLC or media player and I've checked the FFmpeg values and get the below result? Any help would be greatly appreciated.
2
votes
0answers
69 views

Widely compatible video format with lossless audio

I'm a software developer. My software produces animated video files with music. The video files should be compatible with a wide range of software, and they should have excellent audio quality. The ...
1
vote
0answers
368 views

FFmpeg :How to convert to XDCAM HD-422 correctly? (or how to force frame order to BBIBBPBBPBBPBBI like XDCAM HD-422 )

I exported some XDCAM HD-MXF files with Adobe Premiere and Edius,both exported files are the same, I was surprised to see the order of their frames because they are like this : BBIBBPBBPBBPBBI... But ...
1
vote
1answer
34 views

Decrease video size post-editing

I am using a video editing software to edit my videos for YouTube. The scenario is as below: Input file size: 80mb. Input type: webm. My expectation after editing : Video size: around 100mb. (Any ...
0
votes
1answer
150 views

Create 4x2 grid mosaic

trying to create a 4x2 grid from 8 videos using the terminal on a mac. The code I am using is not working: ffmpeg -i input0.mov -i input1.mov -i input2.mov -i input3.mov -i input4.mov -i input5.mov -i ...
1
vote
0answers
34 views

Why does audio not work for this mp4 when played on IPad with headphones plugged?

I'm hosting this video : https://itype.techforge.com.au/assets/videos/repeated/WordRat.mp4. It seems to work fine unless you happen to be on an IPad and plug the headphones in. With the headphones ...
0
votes
0answers
11 views

HVEC codec with a .mov extension

Specs for a job I'm working on is HVEC codec with a .mov extension. Media encoder only gives me the option to export HVEC as a .mp4. How do I export or convert to a HVEC with a .mov extension?
0
votes
1answer
123 views

Valid Slideshow-Video created by ffmpeg is not accepted by Twitter

I create a video from a slideshow using ffmpeg. I have a valid video at the end. VLC plays that video, YouTube also. I want to display the final product directly on twitter. I checked the recommened ...
0
votes
1answer
24 views

Artifact in animation / horizontal lines & double images

I'm using Handbrake, with the H.264 Codec (RF:16). It works pretty well with live action, but it produces odd results whenever I try to back up/encode animations. I've attached a screenshot: Anything ...
0
votes
0answers
48 views

In which codec and file format I should shoot video in camera to avoid problems with editing video in video editing software? [closed]

I want to shoot few videos. Next step I will edit them in some video editing software. Maybe OpenShot, Shotcut, Kdenlive, DaVinci Resolve. Maybe any else. In which codec and file format I should ...
0
votes
2answers
69 views

Merge multiple video files using ffmpeg by adding multiple compress options

I would like to merge multiple video files, performing in the same time complex compressing options. How can I do that? The following ffmpeg command resulting this error: Filtergraph 'scale=1280:...
0
votes
0answers
49 views

How do I get Windows Media Player and other tools that depend on system codecs to play this video file?

I have a video file that plays fine in VLC, but only shows 100% black frames in Windows Media Player, and in other applications that depend on system codecs (for example in MATLAB, which is where I ...
0
votes
0answers
20 views

Save video with the exact quality of the source file

I have never had success in saving file with same quality after editing. Either it was much bigger, or quality was worse (square blocks etc). I thought MediaInfo program would help, i used to check ...
0
votes
0answers
256 views

FFMPEG -C:V Copy and -C:V Transcode

When I do it like this, -c:v copy -preset ultrafast -cfr 20 -tune zerolatency and it doesn't work I know that this is excpected because the video codec is copied and all the other parameters such as ...
0
votes
1answer
487 views

FFmpeg convert G.711 Audio to AAC Audio

Is it possible at all to convert G.711 audio to AAC audio in a stream using ffmpeg? My cam is streaming fine in Chrome (video + audio) but all the other browsers have no audio. I would appreciate any ...
0
votes
1answer
51 views

Best render settings for youtube

I am using Vegas Pro as an editing tool for my videos. What codec (currently using x264vfw) and settings are best to render 1080p 60fps video for YouTube if I don't care about either rendering time or ...
1
vote
1answer
229 views

Network Stream reloading in a loop (Nginx/RTMP Streaming Server)

As the generic title suggests, I do not know exactly how to explain my problem, neither do I know what could cause it. Hopefully this ends up to be the right place looking for help, as I do not find ...
0
votes
1answer
26 views

Where to get codecs?

I have a two part codec question. I want upload a 100 min video to YouTube. Export size from Premiere Pro is 22GB on disk. Here are the only Codecs I have installed: I'm new to this, and was advised ...
1
vote
2answers
598 views

How to make video play with correct aspect ratio

I have the following issue: I have a video file (h264) that plays with the correct aspect ratio in mplayer. However, if I load it into Intel's Computer Vision Annotation Tool, or if I re-encode the ...
0
votes
1answer
38 views

Best video format for a retired PowerPC (iBook G4)?

We have a retired iBook G4, it plays H.264 quite laggy. My question is what is the best video format optimizing for Battery Life on a PowerPC? Bonus question: Is there a free batch converter for ...
-1
votes
3answers
6k views

How I can play an Amazon Prime Video movie with Dolby Digital Plus audio using Chrome browser in my PC?

Currently my web browser Chrome (last version 80) cannot play Dolby Digital Plus audio. I know this audio is used in other devices like Apple TV, Roku, or Amazon Fire TV for example. According to ...
0
votes
2answers
23 views

Can I make m4v files “better” before archiving? (adding keyframes, or lossless optimization, or ?) [closed]

I've got a decent bitrate DVD rip of an animated TV series, and before sending it to it's forever home (currently my PS3's extra HD space), I was wondering: can you take existing m4v files and make ...
0
votes
1answer
36 views

Shooting short clips vs. cutting long clips

Say I want to create several short clips with the original encoding of a certain camera. Do I have to shoot the short clips directly or can I shoot a long clip and then cut it up using ffmpeg with the ...
1
vote
0answers
40 views

Is there a slideshow codec?

Is there a video codec that deals well with slideshows? A substantial fraction of videos are slideshows with an audio track. An appropriate video codec would compress to little more than the audio ...
1
vote
1answer
457 views

Errors in FFmpegSource2 plugin source filter for AviSynth

I was unable to read MTS or MP4 files in AviSynth. Can AviSynth handle MTS files? pointed to the FFmpegSource2 filter, with information on the wiki. I downloaded the plugin and pointed to it from the ...
2
votes
1answer
101 views

Can AviSynth handle MTS files?

I want to process MTS (MPEG Transport Stream) files from an AVCHD camcorder in AviSynth. Displaying with AviSource() says that the file couldn't be opened, displaying with DirectShowSource() says that ...
0
votes
1answer
457 views

FFmpeg convert to HD video format that Adobe Premiere Pro will not crash on?

My problem is somewhat similar to others asked on the site in recent years, but none of those solutions were quite right for my problem: I have a series of frames from a video recorded at roughly 30 ...
0
votes
0answers
24 views

Video not playing in mac

I use a OnePlus 6 mobile for recording videos and so far I have never transferred the video to my Macbook Pro, however, I recently copied all my videos to learn video editing. All videos play ...
1
vote
0answers
15 views

RAW Format videos database

there is an online database for raw videos? I wanted to download some videos in RAW Format for a university work and I can't find none. The job I have to do is to encode the RAW video with different ...
0
votes
1answer
220 views

Smallest Possible Video File in H.264 Format

I am writing some unit-tests for a software that does some work with videos. To do so, I need a programmatically generated video file that is both small and legitimate in that it is actually a ...
-1
votes
1answer
40 views

Best codes for different video formats

Is there a list somewhere on the internet to give a basic idea of what codecs are best for different video formats, for example, what codecs are best for MP4, MPEG, FLV etc?
0
votes
1answer
63 views

Video Quality Measurement test tool

I need to measure streaming video from various different codecs and be able to tell which one is better. What will be the best metrics to look for? Is there a free tool that can help with this.

1
2 3 4 5