ffmpeg convert

To intercept a picture of a 352x240 size, formatted as JPG: The code is as follows Copy Code Ffmpeg-i test.asf-y-F image2-t 0.001-s 352x240 a.jpg Convert the first 30 frames of the video into a animated Gif: The code is as follows Copy Code Ffmpeg-i test.asf-vframes 30-y-F gif a.gif Aft

Learn FFMPEG and SDL programming based on the example program on the FFMPEG official website. SDL is a cross-platform multimedia development kit. Suitable for game, simulator, player and other application software development. Supports Linux, Win32, and other operating systems. Main applications: Video Sets 8 BPP or a higher video mode with any color depth. If the hardware in a mode is no

=====================================================The simplest ffmpeg-based video encoder article list:The simplest video encoder based on FFmpeg (YUV encoded as H.Simplest ffmpeg-based video encoder-Updated (YUV encoded as HEVC (h.265))Simplest FFmpeg-based encoder-pure version (not including Libavformat)==========

Brief Introduction FFmpeg is a free software that can run video, conversion, and stream functions in multiple formats of audio and video [1]. contains libavcodec, a decoder library for audio and video in multiple projects, and libavformat, a library for converting audio and video formats. Prerequisites Because the installation package cannot be found when yum install ffmpeg is used in CentOS, you need to in

Help Options standard Options license option licensing options configuration Options Program options Document Options Documentation Options component option Component options individual component option individual component Options Extension Library support external library support Hardware acceleration features hardware acceleration features tool chain options toolchain options Advanced options advanced options optimization option Developer Option Developer Options Help Options Ability options

Recently spent a day to ffmpeg/tools/build_stagefright implementation success, mainly cross-compiling the need for a variety of dynamic library support is not linked, resulting in various error, basically the network asked questions I have met, hereby recorded.Compilation environment: Ubuntu 14.04 + Android NDK + ffmpeg source.First step: Move Ffmpeg/tools/build_

=====================================================Based on the simplest FFmpeg sample series read-Write memory list:Simplest example of ffmpeg-based memory read and write: Memory playerSimplest sample of memory read-write based on ffmpeg: memory transcoding device=====================================================A sample of two simplest

The simplest example of Mobile End Based on FFmpeg: Android Video Decoder and ffmpegandroidThis document records an FFmpeg-Based Video Decoder for Android. The C language source code of this video decoder comes from the simplest Video Player Based on FFMPEG + SDL. The related concepts are no longer repeated.Directory structure of the source code project. Java sou

In the FFmpeg ultra-detailed comprehensive tutorial---------------a sample of reading PC camera video data and sending it as a live stream with rtmp protocol is done in the camera live text, but the audio support is not implemented, so the example is further perfected in this article and the video synchronization problem of live stream is analyzed in detail. , a code example is also given. For the live stream, here only the synchronization of the send

FFMPEG and ffserver can be used together to implement real-time Streaming Media Services. The real-time data comes from the camera. If you consider the application and network conditions, the client will still lag behind the image obtained by the camera locally. In the worst case, the image will not even be visible (even farther ), here we are concerned about how FFMPEG and ffserver work together, understan

This article is shared by Forum member sun_t89 If you do not know what is ffmepg, please go to the http://ffmpeg.org first to understand :) Compile the ffmepg Simulator version:1. Download ffmpeg-iphone-build from https://github.com/gabriel el/ffmpeg-iphone-build.2. First copy the gas-preprocessor.pl to the/usr/sbin/directory.3. Download The FFMPEG source code fr

Compile and install FFmpeg from the source code in the Mac OS X EnvironmentRecently, due to a project requirement, real-time video codec needs to be developed, and FFmpeg is used for real-time video codec in x264 mode. In Windows and Linux environments, FFmpeg dynamic libraries, header files, and other resources are easily obtained, and the compilation environmen

=====================================================The simplest list of ffmpeg-based video player series articles:100 lines of code for the simplest FFMPEG+SDL-based video player (sdl1.x)The simplest ffmpeg+sdl-based video player Ver2 (with SDL2.0)Simplest FFmpeg-based decoder-pure version (not including Libavformat)

FFmpeg, as an open-source project that supports many video and audio formats, is widely used. Here, we will discuss the reader's understanding about it, which is not a general error. I hope you will criticize and advise me a lot. This is mainly because official documents are scarce. After numerous explorations, I have some experience to share.1. Overview There are several important concepts in FFMPEG. After

Example: FFmpeg-y-I "1.avi"-title" test "-vcodec XviD-s 368x208-r 29.97-B 1500-acodec AAC-AC 2-ar 24000-AB 128-Vol 200-f psp-muxvb 768 "output. WMV"Explanation: The preceding commands can be entered in the doscommand line or created to run in a batch file. However, the premise is that it should be executed in the directory where FFmpeg is located (the cores subdirectory under the directory where conversion

();avpicture_fill((AVPicture *) rpicture, (uint8_t *)rdata, PIX_FMT_RGB565,dwidth,dheight);avpicture_fill((AVPicture *) ypicture, (uint8_t *)ydata, AV_PIX_FMT_YUYV422,mwidth,mheight);swsctx = sws_getContext(mwidth,mheight, AV_PIX_FMT_YUYV422,dwidth, dheight,PIX_FMT_RGB565, SWS_BICUBIC, NULL, NULL, NULL);sws_scale(swsctx,(const uint8_t* const*)ypicture->data,ypicture->linesize,0,mheight,rpicture->data,rpicture->linesize);sws_freeContext(swsctx);av_free(rpicture);av_free(ypicture);(*env)->ReleaseB

Compilation issues:Use VS to create a project about FFmpeg, such as using ffmpeg to intercept files, transcoding and so on, using the debug mode, debugging success, and then use release to generate EXE, often error, not assigning pointers when, there is a problem, is the time to run, The display cannot locate the ordinal, cannot connect to the Avcodec-xx.dll, this problem is because, when the release is gen

Use FFMPEG in PHP to obtain video thumbnails and total video duration. The copy code is as follows: get the video file thumbnail functiongetVideoCover ($ file, $ time, $ name) {if (empty ($ time) $ time1; the first frame in the first second is intercepted by default $ strlenstrle The code is as follows: // Obtain the thumbnail of the video fileFunction getVideoCover ($ file, $ time, $ name ){If (empty ($ time) $ time = '1'; // The first frame of the

I want to use FFMPEG and arm to write a camera for remote monitoring.ProgramFirst, I started to use a model that simply reads one frame of data, compresses one frame of data, and then transmits one frame of data. It's too simple. I just want to use real video monitoring, so we want to use the open-source library FFMPEG! I started to be confident because I have transplanted JPEG libraries and used DirectShow

Project address, for starhttps://github.com/979451341/AudioVideoStudyCodeTwo/tree/master/FFmpeg%E6%92%AD%E6%94%BE%E9%9F%B3%E4%B9%90%EF% bc%88%e4%bf%9d%e7%a8%8b%e5%ba%8f%e4%b8%8d%e6%ad%bb%ef%bc%89This is ffmpeg decode the audio, to the Audiotrack play, this time is considered to be Java and C language cooperation betweenThis time we're going to call Java functions from C + +, here's the code for C + + using