Questions tagged [codec]

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

57 questions with no upvoted or accepted answers
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moov atom not found

I downloaded this video using youtube-dl's HLS downloader. The video was being HLS streamed using AES-128. Even though I could view it perfectly fine when it was being streamed in the browser, VLC ...
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1answer
381 views

AVI Capture in VirtualDub: MP3 Compression

I would like to capture my old VHS tapes to my HDD. I already was successful installing the xvid codec which gives me an acceptable video compression. But somehow I am not able to set audio ...
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133 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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1answer
16k views

how to get vdpau hardware acceleration using ffmpeg?

I am developing a multimedia player using ffmpeg. I am trying hard to get hardware acceleration through ffmpeg using vdpau hardware accelerator. I didn't get any success so far. Below I have mentioned ...
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633 views

Virtual webcam with MJPEG output

I have an very specific situation maybe someone can help with. The short story/question: Is there a virtual webcam software that can output as a virtual webcam in the motion JPEG (MJPEG) format? ...
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212 views

Video codec for progressive enhancement

JPEG has a progressive enhancement mode where a full frame can be downloaded quickly at low quality, and then the quality enhanced as the file is continually loaded. (Example image from http://...
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77 views

Converting videos and time accuracy; pitfalls and solutions

I need to compress some videos about laboratory experiments which contain motions of some objects. Since in analysis time intervalls on the video are needed as accurate as the camera captured them, ...
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961 views

Dxtory recording randomly crashing game

Whenever I try to record gameplay with Dxtory (using the h.264 codec) my game will crash after a seemingly random amount of time, although it is usually after at least 30 minutes. Dxtory produces no ...
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259 views

TitleBox .seq2 animation files

I am using TitleBox for dynamic graphic animations. There are several was to play an animation in this tool, but the "safest" seems to be the internal "animation file" object, which comes with a tools ...
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102 views

How do I edit source material from DVDs in Final Cut Pro?

I'm currently undergoing a project where I have to edit some material only available from DVDs. Basically I need to export a clip or two from the DVDs, and edit them in FCP for use on the net. The ...
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282 views

Which container format for ProDVX F150

I need to produce a video that can be played by a ProDVX F150 (a small black box device which plays video from a flash card). It's hard to find real specs for this thing, but webshops say it does: ...
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41 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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463 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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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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1answer
248 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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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 ...
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16 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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380 views

Best FFmpeg codec for Final Cut import

Is there an ideal FFmpeg codec to use when the video file is designated to be imported into Final Cut Pro X?
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2answers
2k views

Convert to ProRes with ffmpeg adds unwanted contrast to footage

I'm trying to convert H.264 footage from a Panasonic EVA1 camera to Apple ProRes with ffmpeg. However no matter which setting I use, the output file has slightly more contrast than the original input ...
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2answers
904 views

Format and codec for a video with 5760×1080

For an art installation I need to project on 3 projectors (1920×1080). My playback setup is: 1 PC with Windows 7, SSD, NVIDIA GeForce GTX 980 and 3 projectors (1920×1080). The video I need to ...
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84 views

Which lossless RGBA codec should I use for share animations sequences between my different video software?

All is in the question. For the moment, I use PNG image sequences which is cool but sometimes I wonder if a better option exists. I heard about HuffYUV but I never tried it because it wasn't easy to ...
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789 views

How to speed up DNxHR HQX capture with ffmpeg?

I'm trying to capture DNxHR HQX to my SSD. I want HQX because I need the 10-bit color for grading (HQX is a 12-bit codec, but HQ and below are all 8-bit). 8-bit HQ recording is no problem; I ...
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152 views

Quicktime PNG codecs turn blue on most recent Premiere Pro CC update

I recently updated my copy of Premiere CC to 2015.4, and many of my downloaded effects overlay videos turned blue. (Attached is a blood spray effect). These were all downloaded from the website ...
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110 views

No -external codec- option in bandicam 3.0.4

I am using Bandicam 3.0.4, and I want to use the Lagarith Lossless codec. I installed it from the official website, and then I used a tutorial on Youtube to select it. According to the tutorial, I ...
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2k views

Is there a simple explanation of x264 encoding parameters?

So, x264 is still the most popular (free) H.264 encoder out there. But it is also still considered ridiculously cryptic as well. There are tons of switches and options in the encoder that allow you to ...
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10 views

Alternative to XVID?

What codecs are good for upscale encoding while saving space and preserving the quality of the video? I am looking for something that is good with animation, gaming, 2D, etc.
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6 views

Deduplicating video codec

Say I have a 10 second video that I want to loop 1000 times (not just loop-play it in its presentation form, but have the actual video file be 10000 seconds long). This video will contain the same ...
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22 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 ...
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19 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 ...
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12 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 ...
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7 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, ...
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37 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 ...
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71 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 ...
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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 ...
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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 ...
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28 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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2answers
44 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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323 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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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 ...
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215 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
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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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1answer
170 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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12 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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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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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 ...
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275 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
562 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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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 ...
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1answer
172 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
99 views

Convert a non-supported/obscure codec to a supported codec

I currently work with a team of researchers and we are obtaining data from videos that are encoded with SMB8, they are AVI files. We couldn't find anything on the SMB8 codec online unfortunately. We ...