I am working on capturing and streaming audio to RTMP server at a moment. I work under MacOS (in Xcode), so for capturing audio sample-buffer I use AVFoundation-framework. But for encoding and stre...

I am trying to decode an MPEG video file using LibAV. There are two terms which I am not able to grok properly, Frames and Packets. As per my present understanding, Frames are uncompressed video fr...

I have to fill the ffmpeg AVFrame->data from a cairo surface pixel data. I have this code: /* Image info and pixel data */ width = cairo_image_surface_get_width( surface ); height = cairo_image_...

I'm using ffmpeg libraries to decode, scale, and re-encode video within an MPEG transport stream. I've just recompiled from source to v3.3.2 and changed from the old avcodec_decode_video2() API to ...

I'm trying to use ffmpeg to capture frames from a video file, but I can't even get the duration of a video. everytime when I try to access it with pFormatCtx->duration I'm getting 0. I know the ...

As it stands, my project correctly uses libavcodec to decode a video, where each frame is manipulated (it doesn't matter how) and output to a new video. I've cobbled this together from examples fou...

I'm trying to write libavfilter bindings to convert an arbitrary audio file into a raw frequency (spectrum) data to do subsequent audio analysis. Is there anything built-in ffmpeg or libavfilter to...

I am trying to use OpenGL to capture the back buffer of my computer's screen, and then H.264 encode the buffer using FFMPEG's libavcodec library. The issue I'm having is that I would like to encode...

I'm trying to create mp4 video file with FFmpeg and C++, but in result I receive broken file (windows player shows "Can't play ... 0xc00d36c4"). If I create .h264 file, it can be played with 'ffpla...

I have a raw h264 file that I can display with VLC, on a mac: open -a VLC file.h264 I can convert this to mp4 with the command line ffmpeg -f h264 -i file.h264 -c:v copy file.mp4 But what...

I've installed the latest ffmpeg but it seems unable to locate the video codecs. Do I need to completeley remove ffmpeg and re run the ./configure differently in order for ffmpeg to find the video ...

I'm having no luck install libav on OS X Mavericks. Ive tried everything. I'm following this guide: http://earthwithsun.com/questions/568464/install-latest-libav-avconv-on-osx After doing the mac...

By default, libavformat writes error messages to stderr, Like: Estimating duration from bitrate, this may be inaccurate How can I turn it off? or better yet, pipe it to my own neat logging functi...

I found many question about creating DVD menu using ffmpeg but i did not find any one about programmically access to DVD structure information. When i using libav (or FFmpeg) library i can open DVD...

I have video encoded in mpeg-dash(*.mpd, init segments, video segments) Task is to replace one of video segments with segment generated by me. And so video is still can be played. I read propertie...

I have a video taken from my mobile in portrait mode. Here is the dumped info about the video: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.MOV': Metadata: major_brand : qt minor_version : 0 co...

I am working on a python project that uses ffmpeg as part of its core functionality. Essentially the functionality from ffmpeg that I use boils down to these two commands: ffmpeg -i udp://<addr...

I am recording video with FFmpeg and I would like the frame rate it is written with to at least be in the right ballpark. Right now I take the frame rate that my input claims to have and use that t...

How can I detect failure from av_interleaved_write_frame/av_write_frame when the output uses TLS and the connection fails? Both functions continue to return 0 after the destination becomes unavaila...

I'm using the dev build from zeranoe.com which has OpenH264 and libx264 in it. How can i choose between these two Decoders to compare the decoding speed ? avcodec_find_decoder(AVCodecID.AV_CODEC_I...

I know that it copies something but other than that what does it do (to what extend it affects the output file)? Is it a switch or option? Why does it not have a hyphen before the word itself? I s...

I'm trying to copy all streams from several files into one file without transcoding streams. Something you usually do with ffmpeg utility by ffmpeg -i “file_with_audio.mp4” -i “file_with_video.mp4”...

I'm trying to convert a YUV420P image (AV_PIX_FMT_YUV420P) to a JPEG using ffmpeg's libavformat and libavcodec. This is my code so far: AVFormatContext* pFormatCtx; AVOutputFormat* fmt; AVStream* ...

I'm using libavcodec (latest git as of 3/3/10) to encode raw pcm to aac (libfaac support enabled). I do this by calling avcodec_encode_audio repeatedly with codec_context->frame_size samples each t...

Spent around 4hrs now still can't figure out what is the issue here. Here is terminal dump : machine@machine:~$ sudo apt-get install vlc Reading package lists... Done Building dependency tree Read...