#include <stdio.h> #include <stdlib.h> #include <samplerate.h> #define INPUT_RATE 44100.0 #define OUTPUT_RATE 48000.0 #define INPUT_BUFFER_SIZE 1024 int main() { SRC_STATE *src_state; SRC_DATA src_data; int error; // 创建重采样器 src_state = src_new(SRC_SINC_FASTEST, 1, &error...
av_log(obj, AV_LOG_ERROR, "Unable to parse option value \"%s\" as image size\n", val); return ret; } 可见当中调用了另一个函数av_parse_video_size()。 av_parse_video_size() av_parse_video_size()是一个FFmpeg的API函数,用于解析出输入的分辨率字符串的宽高信息。比如,输入的字符串为“...
搞了半天,没办法,自己先阅读一通ffmpeg源码,然后发现还是找不到问题,于是想起来,我可以给ffmpeg设置一个log的回调函数,然后把错误信息报错的更加详细一些,于是加log回调函数,然后获取报错信息: moov atom not found,然后又baidu,google一番,少有收获哈,在https://bbs.csdn.net/topics/300243359论坛上找到第一条有用...
int av_opt_set(void *obj, const char *name, const char *val, int search_flags) { int ret; void *dst, *target_obj; const AVOption *o = av_opt_find2(obj, name, NULL, 0, search_flags, &target_obj); if (!o || !target_obj) return AVERROR_OPTION_NOT_FOUND; if (!val && ...
target_obj) return AVERROR_OPTION_NOT_FOUND; if (!val && (o->type != AV_OPT_TYPE_STRING && o->type != AV_OPT_TYPE_PIXEL_FMT && o->type != AV_OPT_TYPE_IMAGE_SIZE)) return AVERROR(EINVAL); dst = ((uint8_t*)target_obj) + o->offset; switch (o->type) { case AV_OPT_...
安装ffmpeg过程中,执行./configure时,报yasm/nasm not found or too old. Use --disable-yasm for a crippledbuild错误, yasm是汇编编译器,ffmpeg为了提高效率使用了汇编指令,如MMX和SSE等。所以系统中未安装yasm时,就会报上面错误。安装yasm编译器。安装方法如下: ...
FFmpegFrameRecorder could not encode video frames, it occurs on some specific videos. This issue does not occur on V1.5.4. Code FFmpegFrameRecorder recorder = initRecorder(); frame = ... // init frame recorder.record(frame); -> throw an ...
enabled$lib&&die'ERROR:$librequested but not found';done ##FFmpeg源代码分析 下面是cuviddec,c解码器模板内容: // * Nvidia CUVID decoder #include 'libavutil/hwcontext.h' #include 'compat/cuda/dynlink_loader.h' #include 'avcodec.h' #include 'decode.h'...
ffmpeg is a very fastvideo and audio converterthat can also grab from a live audio/video source. It can alsoconvert between arbitrary sample rates and resize videoon the fly with a high quality polyphase filter. ffmpeg主要作用是音视频转换, 这里转换有两个含义, 一个是封装容器的转换(比如mp4转...
notfoundforoption'-Llibavresample'STRIPdoc/examples/demuxing_decoding 为了修改方便,而网上又没有只管举例的相关完整的实例,所以在这里写一个例子,供大伙参考 /** Copyright (c) 2017 bbs.chinaffmpeg.com 孙悟空** Permission is hereby granted, free of charge, to any person obtaining a copy* of this ...