注意:如果报错:“Could find no file with path ‘img/frames_%05d.jpg’ and index in the range 0-4” 这是因为ffmpeg默认图片编号是从0开始的。即如果找不到frames_00000.jpg,则报错。 修改方式为: ffmpeg -start_number 345 -i img/frames_%05d.jpg -vcodec mpeg4 test.avi ...
The MediaOpener comes with an each method as well. The example above could be refactored like this: FFMpeg::open('video.mp4')->each([5, 15, 25], function ($ffmpeg, $seconds, $key) { $ffmpeg->getFrameFromSeconds($seconds)->export()->save("thumb_{$key}.png"); }); Create a ti...
() Could not allocate samples Buffer\n", __FILE__, __LINE__, __FUNCTION__); return -1; } max_dst_nb_samples = out_frame->nb_samples; //输入也可能是分平面的,所以要做如下处理 uint8_t* m_ain[SWR_CH_MAX]; setup_array(m_ain, in_frame, in_fmt_ctx->streams[audio_index]->...
/* find the MPEG-1 video decoder */ codec = avcodec_find_decoder(AV_CODEC_ID_MPEG1VIDEO); if (!codec) { fprintf(stderr, "Codec not found\n"); exit(1); } c = avcodec_alloc_context3(codec); if (!c) { fprintf(stderr, "Could not allocate video codec context\n"); exit(1);...
FFmpeg是一款开源软件,用于生成处理多媒体数据的各类库和程序。FFmpeg可以转码、处理视频和图 片(调整视频、图片大小,去噪等)、打包、传输及播放视频。作为最受欢迎的视频和图像处理软件, 早已经被各行各业的不同公司所广泛使用。 当前文章内容分为3个部分。
(ofmt_ctx, 0, out_filename, 1); if (!(ofmt->flags & AVFMT_NOFILE)) { ret = avio_open(&ofmt_ctx->pb, out_filename, AVIO_FLAG_WRITE); if (ret < 0) { fprintf(stderr, "Could not open output file '%s'", out_filename); goto end; } } // 写入新的多媒体文件的头 ret...
if ((ret = avformat_open_input(&input_format_context, in_filename, NULL, NULL)) < 0) { fprintf(stderr, "Could not open input file '%s'", in_filename); goto end; } if ((ret = avformat_find_stream_info(input_format_context, NULL)) < 0) { fprintf(stderr, "Failed to ...
("Could not open source file %s\n",src_filename)os.Exit(1)}/* retrieve stream information */iffmt_ctx.AvformatFindStreamInfo(nil)<0{fmt.Printf("Could not find stream information\n")os.Exit(1)}for{ifopen_codec_context(&video_stream_idx,&video_dec_ctx,fmt_ctx,libavutil.AVMEDIA_TYPE...
if ((ret = avformat_open_input(&ifmt_ctx, in_filename, 0, 0)) < 0) { printf("Could not open input file. in_filename(%s)\n", in_filename); goto end; } if ((ret = avformat_find_stream_info(ifmt_ctx, 0)) < 0) { ...
[mp4 @ 0000000000e4db00] muxer does not support non seekable output Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument Error initializing output stream 0:1 -- encoded 0 frames Conversion failed! at ChildProcess.<anonymous> (<DirPath>\node_modules\ff...