Skip to main content

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
0 votes
1 answer
22 views

What is the Resolution and Frame Rate/Bitrate limitation for VP8 Codec

As per the documentation of VP9 Codec in Wikipedia VP9 has the concept of Profile and Level. Based on these profiles and levels it also has some limitations on Resolution/Frame Rate/ Bitrate as ...
d0tb0t's user avatar
  • 23
0 votes
0 answers
12 views

Channel mapping in FFmpeg conversion of Dolby 7.1 mlp file to 8 channel wav file

I have a mlp file with 7.1 audio with the following channel mapping (viewed using MediaInfo): L R C LFE Ls Rs Lb Rb I want to convert it to an 8 channel riff64 wave file, so I'm using the following ...
Stan Duncan's user avatar
0 votes
1 answer
26 views

Missing video codec

I have a Samsung TV which can play video files from an external USB source. Generally this works fine, however recently I've come across some mp4 files which it says it can't play. I was a little ...
Rich M's user avatar
  • 101
0 votes
0 answers
31 views

.ts included stream links gets stop after some time in exoplayer

0 I have a link that streams. When I use the link for an IPTV player like Televizo, this plays for an unlimited of time, but when I use this link to my app Exoplayer or my computer's VLC player, this ...
Dipon's user avatar
  • 1
0 votes
1 answer
42 views

Best ffmpeg compression settings for fast seeking of long 4 hour clip

I've got a low-resolution 4 hour clip, and need to do a lot of seeking in the video to write down when stuff happens. Do you have any suggestions for what format/settings would be the most "seek-...
Benjamin H's user avatar
0 votes
1 answer
542 views

How to send av1 encoded stream to a mediamtx server?

I want to test streaming av1 encoded video from the command line but I don't have enough expertise to know if I'm doing something wrong or if it's simply unsupported. So far I've tried gst-launch-1.0 ...
Managor's user avatar
  • 101
0 votes
0 answers
32 views

Issue with repairing 3GP video using untrunc - Error: bad track: 's263'

I am trying to repair a corrupted 3GP video using the untrunc program, but I'm facing an issue due to an error. The command I ran: ./untrunc -v ~/Desktop/logic/Video0086.3gp ~/Desktop/logic/Video0035....
hsrv's user avatar
  • 1
1 vote
0 answers
79 views

Less color and detail visible when videos are played in VLC (Linux, NVIDIA)

When I watch videos from my GoPro, the colors look much better in Dragonplayer (stock player with KDE). This is the case for both x264 videos: With HEVC there is also a difference, although I think ...
Stonecraft's user avatar
2 votes
1 answer
615 views

Is 10 frames a second the lowest h.265 can go?

I produce videos that are mainly audio with some slides as visuals. The slides change about once every 30 seconds, so even at a frame rate of 1fps my video would play smoothly. When I try and export ...
Connor's user avatar
  • 123
2 votes
0 answers
310 views

What actually distinguishes various MPEG-4 Part 2 video codecs (divx, xvid, mpeg4, msmpeg4v1, mp4v, etc.)

I recently audited a large folder containing a variety of encoded videos from 2002-2014. Using ffmpeg, I extracted and recorded metadata, including the video codec used on the film. An example command ...
aaron's user avatar
  • 71
0 votes
0 answers
12 views

How can I make a smaller video when it has limited unique frames?

I'm currently editing a podcast that is mainly audio with only three unique images shown on screen. However, using h264 encoding gives me a massive file, how can I leverage the limited number of ...
Connor's user avatar
  • 123
0 votes
1 answer
192 views

Suitable alternative to Quicktime RLE for alpha-containing non-cartoon videos?

I'm producing a product that involves a composition of several videos, over alpha layers, and there are surprisingly few options aside from image lists. Quicktime's RLE (Run-Length Encoding) codec ...
Michael Macha's user avatar
4 votes
0 answers
175 views

Optimized Parameters of `FFMPEG` for Screen Recording

Windows has a great codec for screen recording called Windows Media Video Screen. It generates artifacts free videos which are highly compressed (small size). I was wondering, what would be the ...
Eric Johnson's user avatar
0 votes
0 answers
2k views

H264 AVC codec [email protected] vs [email protected]

When I convert a video with ffmpeg, and use mediaInfo to review the metadata, I see the followings for the video codec: Format : AVC Format/Info : Advanced Video Codec Format profile : [email protected] ...
angel_30's user avatar
  • 353
0 votes
0 answers
52 views

MOV file contains data from "Apple Elementary video MPEG-2 Media Handler" codec. How do I access it in current MacOS?

I am helping a director access an archive file of a documentary. The file is presented as a 3GB MOV. FFmpeg indicates the following: Metadata: major_brand : qt minor_version : ...
Mark's user avatar
  • 101
1 vote
1 answer
316 views

HEVC vs H264 video file size

I am doing some experiments on the file size of recorded videos in HEVC vs the ones recorded in H264 using a simple Android app that I developed. My impression was that videos recorded in HEVC should ...
angel_30's user avatar
  • 353
4 votes
2 answers
2k views

How can I find out which chroma subsampling (if any) is used in a video file?

If I have a video file, how can I find out which kind of chroma subsampling (4:2:2, 4:2:0), if any, that is used? What I've tried so far: If I open the codec info in VLC I can see that it's in the ...
PetaspeedBeaver's user avatar
1 vote
1 answer
127 views

Transcoding from AVC to ProRes: Are there any negatives that would happen to the footage?

I've shot a short film and the files are using AVC codec within an .MP4 container. I'm wondering whether transcoding to say Quicktime (ProRes 422 HQ) would have any negatives that come with it. I ...
nocomment's user avatar
  • 113
0 votes
0 answers
346 views

ffmpeg video command still with black screen

I am using a screen capture component in delphi that I will use in my program, by enabling the recording option with the command ffmpegLGPL.exe -re -i% PIPE% -c: v h264 -threads 8 -profile: v baseline ...
user10264787's user avatar
0 votes
1 answer
183 views

ffmpeg and ffprobe existing library or an add-on, pros/cons of building one myself

I work with video creation, animation, or fix video elements for several broadcasters in my area. My pipeline includes ffmpeg suite of libraries, and I have written one plugin specifically for ffmpeg ...
QRrabbit's user avatar
  • 101
0 votes
0 answers
59 views

How do you batch resizes of Genesis videos in FFMPEG?

I am trying to a create 4:3 video upscale encodes with Sega Genesis videos that are usually around 320 x 224 using FFMPEG. While I had been advised to use FFMPEG (and AVISynth) in the past, it was ...
GAP's user avatar
  • 51
0 votes
1 answer
6k views

ffmpeg to convert .avi to .mp4 results in error: Could not find tag for codec dvvideo in stream #0, codec not currently supported in container

I'm trying to convert .avi files to .mp4 using ffmpeg, as lossless-ly as possible. I tried this command: ffmpeg -i filename.avi -c:v copy -c:a copy -y filename.mp4 and received this output: ...
stars.in.the.sky's user avatar
1 vote
2 answers
163 views

Why is my video file so large when there isn't any video?

Background I am using Final Cut Pro X on a new M1 MacBook Pro (16gb of RAM) on AC power, and I have noticed that when I export the video project (share) the resulting video file is so much larger than ...
Gabriel Fair's user avatar
0 votes
0 answers
556 views

Encode VP9 in mov container with pcm audio

Davinci Resolve's supported Codecs list shows it only supports decoding VP9 if placed in an mov container. Add to that the audio limitations also present on the Linux version and mov is somewhat ...
Ramma's user avatar
  • 101
1 vote
2 answers
135 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?
GAP's user avatar
  • 51
1 vote
1 answer
4k views

What is the difference between .mts and .mp4 video files, and which is better to edit?

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 ...
user610620's user avatar
0 votes
0 answers
84 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 ...
markum's user avatar
  • 1
1 vote
0 answers
552 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: ...
Greg's user avatar
  • 121
0 votes
2 answers
400 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 ...
TheVistaGroup's user avatar
1 vote
1 answer
2k 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 ...
Wowfunhappy's user avatar
0 votes
0 answers
757 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 ...
Marietto's user avatar
  • 103
1 vote
1 answer
25 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. ...
Dojo's user avatar
  • 111
0 votes
1 answer
40 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 ...
Anthony's user avatar
  • 101
0 votes
1 answer
371 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)\ { ...
MatrixManAtYrService's user avatar
1 vote
2 answers
4k 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]...
xpt's user avatar
  • 195
0 votes
1 answer
282 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!
Tech Expert Wizard's user avatar
0 votes
1 answer
215 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.
Nagarjun Reddy's user avatar
2 votes
3 answers
2k 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 ...
LTR's user avatar
  • 151
1 vote
1 answer
52 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 ...
Praneet Dixit's user avatar
1 vote
1 answer
625 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 ...
Ben Hardy's user avatar
1 vote
0 answers
52 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 ...
Programming Guy's user avatar
1 vote
1 answer
303 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 ...
Ole Albers's user avatar
0 votes
1 answer
114 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 ...
Adam Smith's user avatar
0 votes
2 answers
880 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:...
Estatistics's user avatar
0 votes
0 answers
313 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 ...
Brionius's user avatar
  • 101
0 votes
0 answers
28 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 ...
tegowai's user avatar
0 votes
0 answers
1k 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 ...
Dennis's user avatar
  • 31
0 votes
1 answer
2k 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 ...
Dennis's user avatar
  • 31
0 votes
1 answer
117 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 ...
Kekers_Dev's user avatar
1 vote
1 answer
542 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 ...
randmin's user avatar
  • 111

1
2 3 4 5