首先是需要使用sws_getCachedContext、sws_scale的ffmpeg里面的视频转换库函数 转换指定像素格式。 第二需要注意转换过来的存放格式需要定义 如果自定义的话需要计算 如YUV格式则data需要定义三维指针数组 并且每一维数据行的大小要定义好否则就会提示bad dst image pointers,坏帧的情况。 解决方法 //定义转换的存放区以...
1.目标frame未分配内存空间 [swscaler @ 000002a75aa0a700] bad dst image pointers 解决办法:使用av_frame_get_buffer分配一下即可 pFrameYUV =av_frame_alloc(); pFrameYUV->width = pCodecCtx->width; pFrameYUV->height = pCodecCtx->height; pFrameYUV->format =AV_PIX_FMT_YUV420P; ret= av_fra...
int av_frame_ref(AVFrame *dst, const AVFrame *src):将 src 的内容复制到 dst。 AVFrame *av_frame_clone(const AVFrame *src): 克隆一个 AVFrame。 其他 int av_frame_make_writable(AVFrame *frame): 确保 AVFrame 是可写的。 AVPacket AVPacket是FFmpeg 库中的一个关键结构体,用于存储压缩后的...
Note that VDPAU cannot be used to decode frames in memory, the compressed frames are sent by libavcodec to the GPU device supported by VDPAU and then the decoded image can be accessed using the VDPAU API. This is not done automatically by FFmpeg, but must be done at the application level...
* zero) in the image of the first row of the slice * @param srcSliceH the height of the source slice, that is the number * of rows in the slice * @param dst the array containing the pointers to the planes of * the destination image ...
* quality (between 1 (good) and FF_LAMBDA_MAX (bad)) */ int quality; /** * for some private data of the user */ void *opaque; #if FF_API_ERROR_FRAME /** * @deprecated unused */ attribute_deprecated uint64_t error[AV_NUM_DATA_POINTERS]; ...
失败,bad src img pointers 运行结果如下图所示: bad_src_img_pointers.png 问题原因: 如代码 hw_decode_cuvid_origin.c 中所示, 直接通过transfer_data 将gpu 中解码后的frame download到 系统内存,则系统内存中的frames piex->format 仍为 AV_PIX_FMT_CUDA ,而 AV_PIX_FMT_CUDA 是gpu 显存中存储的解码...
* * NOTE: Pointers not needed by the format MUST be set to NULL. * * @attention In case of video, the data[] pointers can point to the * end of image data in order to reverse line order, when used in * combination with negative values in the linesize[] array. */ uint8_t *...
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问在GLFW窗口中显示FFMPEG解码帧ENint OpenAVFile(const char* szFileName) { char errbuf[256] = ...