Questions tagged [codec]
A 'coder-decoder' computer program capable of encoding and/or decoding a digital data stream or signal.
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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 ...
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20 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 ...
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17 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Sometimes referred to as "RAW" format, an example of which would be the now outdated CinemaDNG - a format that stores pixels in their pre-demosaiced form, as pure light intensity values as ...
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21 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 ...
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31 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: ...
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2answers
21 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 ...
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1answer
60 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 ...
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80 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 ...
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1answer
10 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.
...
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6 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 ...
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17 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)\
{ ...
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83 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]...
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1answer
24 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!
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1answer
50 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.
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32 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 ...
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0answers
203 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 ...
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1answer
32 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 ...
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1answer
125 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 ...
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0answers
33 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 ...
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10 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?
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1answer
101 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 ...
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1answer
14 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 ...
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34 views
In which codec and file format I should shoot video in camera to avoid problems with editing video in video editing software?
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 ...
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2answers
47 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:...
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0answers
40 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 ...
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17 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 ...
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87 views
How to play/edit AVC1/MP4 in Premiere Pro on Windows XP
Premiere Pro 1.5 has served me well editing the footage from my MiniDV tape camcorder. However now I have a new camera (in my smartphone) and the videos from that won't even play on my editing PC (...
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192 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 ...
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1answer
376 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 ...
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1answer
44 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 ...
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1answer
182 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 ...
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1answer
21 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 ...
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2answers
501 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 ...
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1answer
37 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 ...
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2answers
5k 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 ...
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2answers
21 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 ...
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522 views
Green frame in iMovie export
I exported a movie from iMovie from a theater play of about 1 hour. By chance, I found that one of the frames was completely green:
whereas the other frames are mostly black or dark.
The settings ...
0
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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 ...
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0answers
38 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 ...
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1answer
391 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 ...
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1answer
91 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 ...
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1answer
386 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 ...
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21 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 ...
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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 ...
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1answer
164 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
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1answer
39 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?
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1answer
61 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.
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1answer
114 views
Can you encode intra-frame videos from inter-frame without loss?
I'm aware of the differences between intra and inter, but I'm not the most savvy about reencoding them after the fact. Is encoding with intra from an inter-coded video the same as if you originally ...
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1answer
141 views
Intermediate Codec for Resolve to Adobe Mediaencoder or Premiere Pro
I am editing in Resolve, sometimes I am also just Color Grading in Resolve, so I need an intermediate Codec between Resolve and Adobe Media Encoder or Premiere Pro.
The size doesn't matter as much, as ...
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1answer
47 views
Some MP4s have keyframes on scene changes. Others seem to have random keyframes, or keyframes every X seconds. What causes this discrepancy?
Some MP4s have keyframes on scene changes; others have keyframes seemingly randomly placed, or placed every 5-10 seconds. I prefer the former, both for ease of editing and because, unless I'm ...
