libav

I starting to implement custum video decoder that utilize cuda HW decoder to generate YUV frame for next to encode it. How can I fill "CUVIDPICPARAMS" struc ??? Is it possible? My algorithm are: For get video stream packet I'm use ffmpeg-dev libs avcodec, avformat... My steps: 1) Open input file: avformat_open_input(&ff_formatContext,in_filename,nullptr,nullptr); 2) Get video stream property's: avformat_find_stream_info(ff_formatContext,nullptr); 3) Get video stream: ff_video_stream=ff_formatContext->streams[i]; 4) Get CUDA device and init it: cuDeviceGet(&cu_device,0); CUcontext cu_vid_ctx; 5

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center . Closed 7 years ago . Does anyone succeed compiling Libav for Android. I currently looking for documentation. Thanks! - FFmpeg compiled with Android NDK (go to this link) Android built-in codec is too small, so we need to FFmpeg. Android provides the NDK, as we use the C language code for FFmpeg which offers convenience. 来源： https:/

I recently upgraded to fedora 21. I really like it, however, javafx MediaPlayer doesn't work. As per the JavaFX System Requirements Site, for a Linux distro to create A MediaPlayer I need: libavcodec53 libavformat53 I couldn't find any of these packages in the Fedora repositories (or anything about them with a google search for fedora 21 and I also checked a search for fedora 20, however I managed to get them installed from ATRpm's onto my system successfully and still no luck. I also installed ffmpeg and ffmpeg-devel and ffmpeg-libs , and also transcode, and it still throws this exception.

I want to make a quick program in C that will open a video, save each frame as a ppm, and dump motion vectors. All the tutorials I can find are from almost ten years ago and call deprecated or non-existent functions. Are there any good online resources, websites, videos, or textbooks that cover a modern approach to doing these types of things? Randall Cook I have been working with ffmpeg and libav for several years and also have found no decent recent API-level tutorials. Sometimes I just have to dive into the source to figure out what is going on and how to use it. Also, reading the source

So I want to grab a frame from a video at a specific time using libav for the use as a thumbnail. What I'm using is the following code. It compiles and works fine (in regards to retrieving a picture at all), yet I'm having a hard time getting it to retrieve the right picture . I simply can't get my head around the all but clear logic behind libav's apparent use of multiple time-bases per video. Specifically figuring out which functions expect/return which type of time-base. The docs were of basically no help whatsoever, unfortunately. SO to the rescue? #define ABORT(x) do {fprintf(stderr, x);