此处,本人在av_read_frame,得到AVPacket后,没有直接调用av_interleaved_write_frame写文件,最主要的原因是av_interleaved_write_frame里面会对AVPacket的时间(相对各自的AVStream)进行排序,若视频文件比较大,则可能里面需要分配的空间也越来越大,最终由于内存不足导致崩溃。 故本人将读取的音视频packet和字幕packet分别...
mFrame->linesize[2] = mFrame->linesize[3] =0;if(avio_open(&(mOutputCtx->pb), name, AVIO_FLAG_WRITE) <0) { mError ="failed to write video file header";return; }if(avformat_write_header(mOutputCtx,NULL) <0) { avio_close(mOutputCtx->pb); mError ="failed to write video file ...
FFmpeg 源代码简单分析:avcodec_encode_video() FFmpeg 源代码简单分析:av_write_frame() FFmpeg 源代码简单分析:av_write_trailer() 【其它】 FFmpeg源代码简单分析:日志输出系统(av_log()等) FFmpeg源代码简单分析:结构体成员管理系统-AVClass FFmpeg源代码简单分析:结构体成员管理系统-AVOption FFmpeg源代码简单分...
66 */ 67 AVStream **streams; 68 69 #if FF_API_FORMAT_FILENAME 70 /** 71 * 输入或输出的文件名 72 * 73 * - 解码时: 由avformat_open_input()设置 74 * - 编码时: 应该在调用avformat_write_header之前由调用者设置 75 * 76 * @deprecated 本字段目前已经启用,更改为使用url地址 77 */ 78...
FFmpeg 源代码简单分析:avformat_write_header() FFmpeg 源代码简单分析:avcodec_encode_video() FFmpeg 源代码简单分析:av_write_frame() FFmpeg 源代码简单分析:av_write_trailer() 【其它】 FFmpeg源代码简单分析:日志输出系统(av_log()等) FFmpeg源代码简单分析:结构体成员管理系统-AVClass ...
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The hnm demuxer's context struct contained lots of fields that are write-only variables or that are not used outside of parsing the header and that can therefore be replaced by local variables of hnm_read_header(). This commit removes all of these from the context; the second type has be...
if (0 > avformat_write_header(mOutputFormatCtx, &opts)) {fprintf(stderr, "unable to write header");closeOutput();av_dict_free(&opts);return -8;}// Check any options that were not set. Because I'm not sure if all are// appropriate to set through the avformat_write_header()....
* When muxing, should be called by the user before avformat_write_header(). * * User is required to call avcodec_close() and avformat_free_context() to * clean up the allocation by avformat_new_stream(). * * @param s media file handle ...
ret = AVERROR(EINVAL); goto error; } } else { //如果指定了输入的AVOutputFormat,则直接将输入的AVOutputFormat赋值给AVOutputFormat的oformat oformat = av_guess_format(NULL, filename, NULL); if (!oformat) { ret = AVERROR(EINVAL);