qt_ffmpeg_mp4_export_and_import.zip

使用qt结合FFmpeg开发的视频导出示例代码，以及window和macos下的ffmpeg库。本示例支持导出视频为mp4,avi,mov，支持导入视频为mp4,avi,mov

/*
 * Copyright （c） 2014 Lukasz Marek
 *
 * Permission is hereby granted free of charge to any person obtaining a copy
 * of this software and associated documentation files （the “Software“） to deal
 * in the Software without restriction including without limitation the rights
 * to use copy modify merge publish distribute sublicense and/or sell
 * copies of the Software and to permit persons to whom the Software is
 * furnished to do so subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED “AS IS“ WITHOUT WARRANTY OF ANY KIND EXPRESS OR
 * IMPLIED INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM DAMAGES OR OTHER
 * LIABILITY WHETHER IN AN ACTION OF CONTRACT TORT OR OTHERWISE ARISING FROM
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include 
#include 
#include 

static const char *type_string（int type）
{
    switch （type） {
    case AVIO_ENTRY_DIRECTORY:
        return ““;
    case AVIO_ENTRY_FILE:
        return ““;
    case AVIO_ENTRY_BLOCK_DEVICE:
        return ““;
    case AVIO_ENTRY_CHARACTER_DEVICE:
        return ““;
    case AVIO_ENTRY_NAMED_PIPE:
        return ““;
    case AVIO_ENTRY_SYMBOLIC_link:
        return “nk>“;
    case AVIO_ENTRY_SOCKET:
        return ““;
    case AVIO_ENTRY_SERVER:
        return ““;
    case AVIO_ENTRY_SHARE:
        return ““;
    case AVIO_ENTRY_WORKGROUP:
        return ““;
    case AVIO_ENTRY_UNKNOWN:
    default:
        break;
    }
    return ““;
}

static int list_op（const char *input_dir）
{
    AVIODirEntry *entry = NULL;
    AVIODirContext *ctx = NULL;
    int cnt ret;
    char filemode[4] uid_and_gid[20];

    if （（ret = avio_open_dir（&ctx input_dir NULL）） < 0） {
        av_log（NULL AV_LOG_ERROR “Cannot open directory: %s.\n“ av_err2str（ret））;
        goto fail;
    }

    cnt = 0;
    for （;;） {
        if （（ret = avio_read_dir（ctx &entry）） < 0） {
            av_log（NULL AV_LOG_ERROR “Cannot list directory: %s.\n“ av_err2str（ret））;
            goto fail;
        }
        if （!entry）
            break;
        if （entry->filemode == -1） {
            snprintf（filemode 4 “???“）;
        } else {
            snprintf（filemode 4 “%3“PRIo64 entry->filemode）;
        }
        snprintf（uid_and_gid 20 “%“PRId64“（%“PRId64“）“ entry->user_id entry->group_id）;
        if （cnt == 0）
            av_log（NULL AV_LOG_INFO “%-9s %12s %30s %10s %s %16s %16s %16s\n“
                   “TYPE“ “SIZE“ “NAME“ “UID（GID）“ “UGO“ “MODIFIED“
                   “ACCE

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2019-08-24 15:37  ffmpeg-win32-shared\
     目录           0  2019-08-24 15:37  ffmpeg-win32-shared\bin\
     文件      293888  2019-08-19 04:44  ffmpeg-win32-shared\bin\ffmpeg.exe
     文件    34018816  2019-08-19 04:44  ffmpeg-win32-shared\bin\avcodec-58.dll
     文件      124928  2019-08-19 04:44  ffmpeg-win32-shared\bin\postproc-55.dll
     文件      518656  2019-08-19 04:44  ffmpeg-win32-shared\bin\swscale-5.dll
     文件     9886208  2019-08-19 04:44  ffmpeg-win32-shared\bin\avformat-58.dll
     文件      166400  2019-08-19 04:44  ffmpeg-win32-shared\bin\ffprobe.exe
     文件      829952  2019-08-19 04:44  ffmpeg-win32-shared\bin\avutil-56.dll
     文件     1466880  2019-08-19 04:44  ffmpeg-win32-shared\bin\avdevice-58.dll
     文件      316928  2019-08-19 04:44  ffmpeg-win32-shared\bin\swresample-3.dll
     文件      147968  2019-08-19 04:44  ffmpeg-win32-shared\bin\ffplay.exe
     文件     7300096  2019-08-19 04:44  ffmpeg-win32-shared\bin\avfilter-7.dll
     目录           0  2019-08-24 15:37  ffmpeg-win32-shared\include\
     目录           0  2019-08-24 15:37  ffmpeg-win32-shared\include\libpostproc\
     文件        1642  2019-08-19 04:44  ffmpeg-win32-shared\include\libpostproc\version.h
     文件        2936  2019-08-19 04:44  ffmpeg-win32-shared\include\libpostproc\postprocess.h
     目录           0  2019-08-24 15:37  ffmpeg-win32-shared\include\libavfilter\
     文件        2335  2019-08-19 04:44  ffmpeg-win32-shared\include\libavfilter\version.h
     文件        6609  2019-08-19 04:44  ffmpeg-win32-shared\include\libavfilter\buffersrc.h
     文件        6314  2019-08-19 04:44  ffmpeg-win32-shared\include\libavfilter\buffersink.h
     文件       42263  2019-08-19 04:44  ffmpeg-win32-shared\include\libavfilter\avfilter.h
     目录           0  2019-08-24 15:37  ffmpeg-win32-shared\include\libavutil\
     文件       23027  2019-08-19 04:44  ffmpeg-win32-shared\include\libavutil\hwcontext.h
     文件        1800  2019-08-19 04:44  ffmpeg-win32-shared\include\libavutil\time.h
     文件        1482  2019-08-19 04:44  ffmpeg-win32-shared\include\libavutil\hwcontext_cuda.h
     文件        1726  2019-08-19 04:44  ffmpeg-win32-shared\include\libavutil\intfloat.h
     文件        5468  2019-08-19 04:44  ffmpeg-win32-shared\include\libavutil\error.h
     文件        5899  2019-08-19 04:44  ffmpeg-win32-shared\include\libavutil\fifo.h
     文件        2394  2019-08-19 04:44  ffmpeg-win32-shared\include\libavutil\blowfish.h
     文件        1203  2019-08-19 04:44  ffmpeg-win32-shared\include\libavutil\hwcontext_mediacodec.h
............此处省略660个文件信息