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Questions tagged [video-codecs]

Questions related to video compression and decompression methods. This includes popular video codec standards like H.264, MPEG4.

A video codec is a device or software that enables video compression or decompression for digital video. The compression usually employs lossy data compression.

More details at http://en.wikipedia.org/wiki/Video_codec

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changing HM reference software to display some information about the bitstream

I am very new to the HM HEVC (and the JEM) reference software, and I am currently trying to understand the source code. I want to add some lines to display for each component: name of Algo (i.e. inter/intra Algos) + length of the bitstream+ position…
Mourad
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How to conconfigure AV1 codec for low delay applications?

Do anyone know how to conconfigure AV1 for low delay applications , i mean like HM (HEVC) low delay configuration where the GOP is IPPP..( just 2 temporal layers ) , I tried these , but i am not sure because it's not different from the regular…
Mourad
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which function does VLC use to open a video file?

i`ve downloaded a video file and recorded the packet arrival time. and i want to use VLC to play the video according to the time i record. which function and how should i call to do it in the VLC source code? i mean usually which functions VLC use…
JavaMobile
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No new codecs in TeamViewer converter

Windows 8.1 x64 TeamViewer .tvs convert option: https://snag.gy/uPAFTH.jpg 1. MJPEG Compressor 2. Cinepak Codec by Radius 3. Intel IYUV codec 4. Intel IYUV codec 5. Mircorosft RLE 6. Microsoft Video 1 only few ('windows standard') codecs list I…
abikar
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How can x264 library be use in a Flex/Flash project?

Im currently working on creating a web based game in flex. One of the features of the game is for it to be able to record the gameplay and have it on flv video file. This has been done thru capturing every frames of the game, having it on a…
greenGlitz
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How to implement fast encoding with ffmpeg?

I want to know that how can I implement fast encoding with ffmpeg. I used this code: vcodec libx264 -pix_fmt yuv420p -r 30 -g 60 -b:v 1000k -shortest -acodec libmp3lame -b:a 128k -ar 44100 -threads 0 -preset veryfast But it only uses 50%…
prodiskieu
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How to add a new syntax element in HM (HEVC test Model)

I've been working on the HM reference software for a while, to improve something in the intra prediction part. Now a new intra prediction algorithm is added to the code and I let the encoder choose between my algorithm and the default algorithm of…
Mosen
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HEVC Intra Prediction Module

I have been working on HEVC Intra Prediction for the past few weeks. I have understood the concept of the Module however, still a little skeptical with respect to the Rough Mode Decision process. Can someone give a clear basics as to the angles…
user7230592
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Does anyone know of a free H263 Plus Decoder codec

I am working on audio/video app & looking for a H263Plus (not H263) decoder to be used in the project(C++ based) Regards, Chuks
user470728
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Missing codec on listing with DirectShow

We have a desktop Windows (32bit only) app which shows a list of the codecs installed in the computer. However, we are finding that sometimes this list does not get every codec installed, as we have found cases - without any particularity - where…
Unapedra
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Approaches for efficient compression of images with several focus planes

I am working on a application where images at different focus planes are aquired and currently stored inside a multipage tif. Unfortunately the tif-based compression techniques does not benefit from the signal redundancy over the different focus…
Andreas
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Is there a need to apply Deblocking filter, when I have all Intra frames Encoding

I am working on H.264 Deblocking Filter and need some clarity. While designing an all Intra Encoder and Decoder, is it mandatory to add Deblocking Filter block in the Codec. If deblocking filter is not enabled for all Intra Encoding does…
Codec Guy
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Pure C-Code of x264 of ffmpeg

I am doing some hardware implementation on Ratecontrol of FFMPEG. I am using x264 Encoder, here I am not able to find the C-Code implementation of this function intra_mbcmp_x3_8x8c. I tried to trace it back wards, but there is only assembly…
Codec Guy
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How to parse webm's simpleblock? and get the frame data

I want to parse webm file and convert to flv format. I can get the simple block array, and some information. like this... //d is simple block data var track_number:uint = d.readByte() & 0xF; var time_code:uint = d.readShort(); // var flags:uint =…
mino
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MediaPlayer - Can 'MediaElement' be improved to support more media formats and encodings? Codecs support

MediaPlayer - Can 'MediaElement' be improved to support more media formats and encodings? Codecs support. Hello all. I am building a media player in c# and WPF. All the examples that I find, more or less say the same thing, "place a…
Ibizanhound
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