FFmpeg support

A complete, cross-platform solution to record, convert and stream audio and video.

Detailed introduction: https://www.ffmpeg.org

Install FFmpeg

Download first FFmpeg from here, then install it:

./configure --disable-all --disable-autodetect --disable-podpages --disable-asm --enable-avcodec --enable-avformat --enable-decoders --enable-encoders --enable-demuxers --enable-parsers --enable-protocol='file' --enable-swscale --enable-zlib
make
sudo make install

Add FFmpeg to your project

Add library: FFmpeg (for GCC: -lavformat -lavcodec -lavutil -lswscale -lm -lz -lpthread)

Usage

Enable LV_USE_FFMPEG in lv_conf.h.

See the examples below.

Note

The FFmpeg extension doesn't use LVGL's file system in :cpp:`lv_ffmpeg_player_set_src`. You can simply pass the path to the image or video as usual on your operating system or platform. The LVGL file system will always be used when an image is loaded with lv_image_set_src().

Example

[中文]

Decode image

#include "../../lv_examples.h"
#if LV_BUILD_EXAMPLES
#if LV_USE_FFMPEG

/**
 * Open an image from a file
 */
void lv_example_ffmpeg_1(void)
{
    /*It always uses the LVGL filesystem abstraction (not the OS filesystem)
     *to open the image, unlike `lv_ffmpeg_player_set_src` which depends on
     *the setting of `LV_FFMPEG_PLAYER_USE_LV_FS`.*/
    lv_obj_t * img = lv_image_create(lv_screen_active());
    lv_image_set_src(img, "./lvgl/examples/libs/ffmpeg/ffmpeg.png");
    lv_obj_center(img);
}

#else

void lv_example_ffmpeg_1(void)
{
    /*TODO
     *fallback for online examples*/

    lv_obj_t * label = lv_label_create(lv_screen_active());
    lv_label_set_text(label, "FFmpeg is not installed");
    lv_obj_center(label);
}

#endif
#endif

Decode video

#include "../../lv_examples.h"
#if LV_BUILD_EXAMPLES
#if LV_USE_FFMPEG

/**
 * Open a video from a file
 */
void lv_example_ffmpeg_2(void)
{
    /*birds.mp4 is downloaded from http://www.videezy.com (Free Stock Footage by Videezy!)
     *https://www.videezy.com/abstract/44864-silhouettes-of-birds-over-the-sunset*/
    /*It will use the LVGL filesystem abstraction (not the OS filesystem)
     *if `LV_FFMPEG_PLAYER_USE_LV_FS` is set.*/
    lv_obj_t * player = lv_ffmpeg_player_create(lv_screen_active());
    lv_ffmpeg_player_set_src(player, "./lvgl/examples/libs/ffmpeg/birds.mp4");
    lv_ffmpeg_player_set_auto_restart(player, true);
    lv_ffmpeg_player_set_cmd(player, LV_FFMPEG_PLAYER_CMD_START);
    lv_obj_center(player);
}

#else

void lv_example_ffmpeg_2(void)
{
    /*TODO
     *fallback for online examples*/

    lv_obj_t * label = lv_label_create(lv_screen_active());
    lv_label_set_text(label, "FFmpeg is not installed");
    lv_obj_center(label);
}

#endif
#endif

API

lv_types.h

lv_ffmpeg.h