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Questions tagged [codec]

Shorthand for "Encoder/Decoder". A codec allows to convert data into a different representation and decode it again. Codecs are mostly used in signal transmission, e.g. for audio/video playback or streaming.

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{kdenlive} Render to webm and mp4 keeps failing: AVStream.codec error

I'm trying to render 39 minutes long video made of a few joined .MOV 1080p Canon clips. I apply a few effects to some of them, the list is (unfortunately, I don't not their exact English name): audio ...
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ffmpeg transcode loss information [closed]

I have a system taking videos of various formats as input and transcoding them into the same format for storage and processing and semantic analysis such as object detection. First, I wonder is this ...
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compiling PJSUA with Opus Codec but not listing as available

I am compiling PJSUA 2.8 with Opus Codec support, but it is not showing as available when I list the supported codecs in python, it only shows these: speex/16000/1 130 speex/8000/1 129 speex/32000/1 ...
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What's the difference in FFMPEG between using -c:v libx264, -c:v copy and -vcodec copy?

I'm trying to record video and audio from an IP Camera streaming in H.264. I found these different options: -i "camera_url" -c:v libx264 -acodec copy "out.mp4" -i "camera_url" -c:v copy -acodec ...
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Hardware accelerated mplayer does not render movie in Fedora 26

I bought a GPU for my Linux system just to be able to play movies without any glitches and issues of integrated graphics and get rid of messages like your "system is too slow to ...". Then I ...
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How to set ffdshow properly for VisualSubSync Audio-Decoding AAC LC

Hey Guys when I tried to extract the .wav File I get following error Code in VSS(VisualSubSync) Opening and analyzing file : F:\Exzessiv\18.10.23_TelAviv\output\EmmiMesse_v2.mp4 In case of problems ...
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Compress still image ffmpeg

I tried to find by myself, but understood what this none easy what I'm thinking. Please help me find optimal way. I need compress this video with 1080p demension, but more less wight. It contain ...
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111 views

Why am I listening to different “piano notes” on Videos?

I have a number of MP4 files which are also available on YouTube, since long ago. These videos are basically showing Music Sheets while a Piano is playing them. The piano is not real, so this is ...
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193 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. Both options aren't particularly appealing (for security and ...
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100 views

I need to make a .MP4 file with the XVID codec. and i simply can't find a way to do it

My client wants 2 files: .avi and .mp4 in 1080p with the XviD codec. The .avi was easy, I installed the XviD codec from the official website and exported the .avi using After Effects. The .mp4 on ...
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Does Chrome debug info reveal the format or type of codec needed to play the video?

Does Chrome debug info reveal the format or type of codec needed to play the video? The debug info is pretty cryptic, so it is not clear if it includes codec information. For example, here are some of ...
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Windows 10 getting HEVC H.265 Codec to use Hardware Acceleration

Playing HEVC H.265 videos using Windows Media Player and GoPro Quik then the 4k 60 fps video appears all stuttering and becomes a slideshow. The CPU usage is going through the roof and it's not using ...
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Can I somehow play an HEVC movie on a core2 duo computer?

I have a core 2 Duo, E8400, radeon4350 RV710, Optiplex 755, 4GB RAM 332mhz DRam DDR2 DUal channel and I ask if I can play HEVC coded movies with a software trick or something?
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FFMPEG outputting a timelapse video without any frames

I'm new to FFMPEG but have created three timelapses on it (I forgot the commands I used to make them though). I have ~400 images with consecutive numbering from IMG_1744_EDITED.JPG. I edited the RAW ...
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Media Player Classic (MPC-BE) showing reds different in transcoded video

With Media Player Classic (MPC-BE) I'm getting reds rendered differently after transcoding a video. These crops show the first frame using. If you look closely the last picture is more orange-y ...
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What is the difference between these video codecs?

I'm familiar with general digital video formats, but I'm trying to record my first Patreon videos - which are long (59min) and I'm finding myself completely baffled by format filesizes. I could really ...
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1k views

Recommended settings to convert Opus to AAC

I am downloading some music from Youtube, and it seems that in most cases (popular videos), the best quality audio is an opus file. I know that (1) Opus is the newest and more efficient codec, and (2)...
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765 views

Is it possible to manually add addtional codecs to VLC Media Player for a portable install?

I have two DLL files and one OCX file for a proprietary codec format to play some specific videos encoded with it. While I have an "installer" for it that works fine to register the codec for the ...
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1k views

How to install opus codec for playback on Windows 10

How do I install the opus audio codec onto my Windows 10 machine? I have an mkv file with HEVC video and OPUS audio. When I play the file in VLC, its fine Windows 10 Film and TV app: there is video ...
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775 views

FFMPEG 4.0 Opus Codec Not Enabled?

I just compiled and installed ffmpeg-4.0 on my Kubunut 17.10 laptop, and and I'm getting an error when trying to do conversions using the opus components. It appears that opus is not enabled, and I ...
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ffmpeg Transcoding Stops After Few Seconds

I'm trying to do this over week now with no success, What's I'm trying to do is transcoding video from live streaming source and downscale it with FFmpeg, but every time I start transcoding it ...
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443 views

Lightweight codec for streaming 1080p 60 FPS in real time

Specifying Problem I want to stream my desktop to another computer over 1Gbps Ethernet with following requirements: Resolution: 1920 x 1080 FPS: 60 Input Data: raw 24bit true color (3Gbps) Max ...
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288 views

FFmpeg darkening video

I'm trying to switch my encoding setup from Mac to Windows. As part of that, I'm trying to get FFmpeg working as my ProRes encoder. I'm converting from 10-bit uncompressed to ProRes 422 HQ. When I ...
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Android - libffmpeg -missing codec

I've compiled libffmpeg.so (version 3.4.2) for Android ndk r10e on linux host, including support for x264, freetype2 , libass, liblame, libfonconfig, libogg 1.3.3, libvorbis 1.3.5. I enabled at ...
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How do I split AND encode an audio into two parts and merge them back using ffmpeg?

Excuse the long question, I don't know an easier/shorter way to tell you my point. I want to use ffmpeg to edit (fadeout etc.) AND split an audio file and merge it back together after. (I can't use -...
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220 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 ...
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Adapting video for LaTeX with ffmpeg does not produce the expected result

I have been trying for weeks to embed some videos (created with python-Matplotlib) in my Latex/Beamer presentation according to examples like this one, which use a package called media9. Document ...
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1answer
116 views

HE AACv2 Audio profile on MediaInfo

I have a SDI input encoder with audio configuration as Coding : AAC/HE-AAC Coding Mode : MPEG-4 HE AAC v2 Mode : Stereo (2/0) Sameple Rate : 48KHz ES Bitrate : 64Kbps Transport Format : ADTS And, ...
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1answer
466 views

iSpy produces 10x larger video files after VGA upgrade

I have a small HP server (ProLiant MicroServer Gen8) and I use it to make surveillance camera recordings. The on-board graphics were quite weak, so I added a GeForce GT730 and installed the latest ...
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Trim AVI video via FFMPEG results in black screen video, but audio is OK

I want to trim a AVI video (H264 codec) via ffmpeg. The time interval for the result is available as START_TIME_ORIG and DURATION_ORIG (both in microseconds). To make sure that the resulting video ...
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ffmpeg slideshow with crossfade

I just figured out how to make a slideshow with crossfade. It's a two step process. The first step reads the pictures with framerate 0.5 (which means 2 seconds for each picture), and produces an ...
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1answer
2k views

FFmpeg: h264_qsv encoder and crf issues

I just found out about FFmpeg when recording gameplay on Bandicam using H.264 (Intel Quick Sync) codec. Unfortunately one of my videos ended up being recorded in an AVI wrapper and I wanted to ...
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797 views

How to concatenate MKVs with different tracks

I have an mkv film and a separate mkv with an introduction by the director. I'm trying to use mkvmerge to concatenate them. However, the film has subtitles and the intro has no subtitles, and this ...
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ffmpeg same video crop multi times

I'm totally a newbie to FFmpeg and programming stuff, so the question might be too stupid... I have a video and want to crop it into small pieces and render out each one, so I'm trying to use a FOR ...
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Which codec do I use for low latency video streaming with VLC?

I'm looking for a way to stream a webcam video with as low latency as possible. Quality and resolution are far less important. This is the command I'm currently using is: cvlc -vvv v4l2:///dev/...
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348 views

FFmpeg: passing an argument for a codec

I'm using FFmpeg to convert to the iLBC format: ffmpeg -i dream.wav -ar 8000 -b:a 15200 -acodec ilbc dream.lbc -y The iLBC codec supports an enhance option: enhance Enable the enhancement of ...
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2k views

Using a lossless video codec for archiving (monochrome) scientific video data

Basic question: what is a suitable codec for storing/archiving scientific video data in a lossless manner? I am trying to help my research group out with storing/archiving some videos recorded with a ...
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1answer
196 views

ffmpeg mxf file setdar to 16/9 but keep audio and video same without encoding

I have numerous 50Mbps IMX50 wrapped MXF videos. Media info/media tab read the aspect ratio as 4:3. I'd like to change that to 16:9. Ideally I would not re-encode all the content because I have ...
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240 views

No sound even after conversion for mpeg movie

A number of years ago I digitized some old VHS tapes to the .mpg file type. At the time the digitization worked fine (both video and audio), but I recently went to play those files and they no longer ...
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373 views

Changing the codec while keeping the bitrate with ffmpeg

So, I have a bunch of .mp4 files and I need to change the video and audio codecs in order to be able to play them on my device. The video codec is currently h264 and I need mpeg4. The audio codec is ...
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575 views

How to keep original video file header in FFmpeg [closed]

I'm trying to use FFMpeg to do some processing on my input video files which is then given to an emulator software (a packetization software) for further processing. The emulator is basically a ...
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174 views

How to get a ffmpeg from linux to run on Windows 7?

I need to put together a set of images into a video with ffmpeg. In order to get a mp4-video on my Linux based system I'm using following command: ffmpeg -r 1 -f image2 -i image_%3d.png -f mp4 -q:v 0 ...
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2answers
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Mysteri .avi - no sound on original but sound on copy

I have an old .avi file where the sound is just scratchy, no mystery there but I have a wmv file presumably derived from the .avi file but the wmv HAS the sound. Has anyone any ideas what may have ...
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No sound after installing K-lite Mega Codecs: AC3, Audio Switcher: Out?

I've installed K Lite Mega Pack 13.1.9 and I tried to play a DVD, and the following error pops up in MPC-HC player. Daum Potplayer plays it but the video is somewhat garbled and there is no sound. VLC ...
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772 views

Optimal settings for madVR for this PC

CPU: Ryzen 5 1600 stock cooler GPU: GIgabyte GTX 1050ti 4GB OC Gaming Motherboard: Gigabyte AB-350 Gaming 3 Monitor: Full HD Connection: HDMI Now I know my motherboard and CPU supports 4k video ...
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2answers
5k views

Why is encoding VP8/9 so slow compared to H.264?

Recently I wanted to try out the Webm codecs VP8 and VP9 but when I ran ffmpeg to encode a H.264 MP4 file into one of the other two codecs, I realized that the encoding is (by almost an order of ...
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2answers
3k views

Kdenlive Codec Error when Trying to Render MP4

Please correct me If I am posting this in the wrong place :) So, I recently installed Kdenlive on my Windows 10 PC (I would install it on my linux, but this PC is faster). I make my video, then when ...
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1answer
5k views

HEVEC/H.265 GPU decoding

Is possible to decode files with H.265 video format using GPU? Specs: Intel i5-2400 NVIDIA 970 Windows 10 Pro Tried playing test samples (MKV with H.265 codec, 10bit), ~100% CPU usage, lags... ...
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What happens if a presentation layer receives Unicode but can't present it?

I am currently a University student studying computer science and while studying for our networking test I was posed with an interesting question in our book. Lets say a computer was created before ...
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2k views

Convert Series of PNG's into MP4 Video Using FFMPEG Where Each Photo is 1 Frame and Each Frame is Played for 1 Sec

I have a series of 15 PNG Files - https://www.sendspace.com/file/jrpbl1. I would like to create an MP4 Video of them using FFMPEG. In my video I'd like to have 15 Frames (One per image) where each is ...