I'm currently working with GStreamer in a Linux environment and encountered an issue after upgrading from GStreamer 1.18 to 1.22. While trying to process a video file, I received the followin...

Where to get full list of libav* formats?

After trying to install the sqlite extension, I can no longer run php on my mac. I keep getting brew errors. Has anyone had a similar problem? dyld[58991]: Library not loaded: /opt/homebrew/opt/lib...

I'm using ffmpeg's libav to decode video files on Mac. For supported codecs, it says it can use the Mac VideoToolbox framework to hardware-accelerate the decoding. Can I get the result of that deco...

Here is the link to a similar question to this: Pydub (WindowsError: [Error 2] The system can not find the file specified) Although in this one the problem is with ffmpeg, which I solved by s...

I am using libav 9.6, installed via Homebrew. $ avprobe -version avprobe version 9.6, Copyright (c) 2007-2013 the Libav developers built on Jun 8 2013 02:44:19 with Apple LLVM version 4.2 (clang-...

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 am trying to create a video from images using the ffmpeg library. The images have a size of 1920x1080 and are supposed to be encoded with H.264 using a .mkv container. I have come across various ...

I want to know once and for all, how time base calucaltion and rescaling works in FFMPEG. Before getting to this question I did some research and found many controversial answers, which make it ev...

What happens when you do a conversion from AV_SAMPLE_FMT_S16P to AV_SAMPLE_FMT_S16? How is the AVFrame structure going to contain the planar and non-planar data?

I want to transmux a .mkv file to .mp4 using Libav but when I try to decode the video h.264 stream there is a malfunction in my code Invalid NAL unit size 21274662>141 Error splitting the inp...

I am trying to use libav to convert an MP4 file to an MP3 file. Basically trying to achieve what ffmpeg -i filename.mp4 filename.mp3 does. I've found this official example. But when I run it with a...

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...

How to calculate correct PTS value for frame before encoding in FFmpeg C API? For encoding I'm using function avcodec_encode_video2 and then writing it by av_interleaved_write_frame. I found som...

In Xcode 4.3.2, building an iPad app, which includes libavutil.a from the ffmpeg distribution, it builds and runs correctly but when I try to run unit tests (Cmd-U) I get the following linker error...

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 downloaded videos from CDN in flv format (video H264 and audio AAC) and remux to them to MP4 format. But videos are limited by length. So i've downloaded each video in several parts: started...

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...

Note: I'm aware ffmpeg and libav are different libraries. This is a problem common to both. Disclaimer: Duplicate of SO question marked as answered but actually didn't give a proper solution. I...

I am writing an application that decodes a single video stream from an input file (any codec, any container), does a bunch of image processing, and encodes the results to an output file (single vid...