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opencv/modules/videoio/test/test_ffmpeg.cpp

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// This file is part of OpenCV project.
// It is subject to the license terms in the LICENSE file found in the top-level directory
// of this distribution and at http://opencv.org/license.html.
#include "test_precomp.hpp"
using namespace std;
namespace opencv_test { namespace {
static inline long long getFileSize(const string &filename)
{
ifstream f(filename, ios_base::in | ios_base::binary);
f.seekg(0, ios_base::end);
return f.tellg();
}
typedef tuple<string, string, Size> FourCC_Ext_Size;
typedef testing::TestWithParam< FourCC_Ext_Size > videoio_ffmpeg;
TEST_P(videoio_ffmpeg, write_big)
{
if (!videoio_registry::hasBackend(CAP_FFMPEG))
throw SkipTestException("FFmpeg backend was not found");
const string fourcc = get<0>(GetParam());
const string ext = get<1>(GetParam());
const Size sz = get<2>(GetParam());
const double time_sec = 1;
const double fps = 25;
ostringstream buf;
buf << "write_big_" << fourcc << "." << ext;
const string filename = tempfile(buf.str().c_str());
VideoWriter writer(filename, CAP_FFMPEG, fourccFromString(fourcc), fps, sz);
if (ext == "mp4" && fourcc == "H264" && !writer.isOpened())
{
throw cvtest::SkipTestException("H264/mp4 codec is not supported - SKIP");
}
ASSERT_TRUE(writer.isOpened());
Mat img(sz, CV_8UC3, Scalar::all(0));
const int coeff = cvRound(min(sz.width, sz.height)/(fps * time_sec));
for (int i = 0 ; i < static_cast<int>(fps * time_sec); i++ )
{
rectangle(img,
Point2i(coeff * i, coeff * i),
Point2i(coeff * (i + 1), coeff * (i + 1)),
Scalar::all(255 * (1.0 - static_cast<double>(i) / (fps * time_sec * 2))),
-1);
writer << img;
}
writer.release();
EXPECT_GT(getFileSize(filename), 8192);
remove(filename.c_str());
}
#if defined(OPENCV_32BIT_CONFIGURATION)
static const Size bigSize(1920, 1080);
#else
static const Size bigSize(4096, 4096);
#endif
const FourCC_Ext_Size entries[] =
{
make_tuple("", "avi", bigSize),
make_tuple("DX50", "avi", bigSize),
make_tuple("FLV1", "avi", bigSize),
make_tuple("H261", "avi", Size(352, 288)),
make_tuple("H263", "avi", Size(704, 576)),
make_tuple("I420", "avi", bigSize),
make_tuple("MJPG", "avi", bigSize),
make_tuple("mp4v", "avi", bigSize),
make_tuple("MPEG", "avi", Size(720, 576)),
make_tuple("XVID", "avi", bigSize),
make_tuple("H264", "mp4", Size(4096, 2160)),
make_tuple("FFV1", "avi", bigSize),
make_tuple("FFV1", "mkv", bigSize)
};
INSTANTIATE_TEST_CASE_P(videoio, videoio_ffmpeg, testing::ValuesIn(entries));
//==========================================================================
TEST(videoio_ffmpeg, image)
{
if (!videoio_registry::hasBackend(CAP_FFMPEG))
throw SkipTestException("FFmpeg backend was not found");
const string filename = findDataFile("readwrite/ordinary.bmp");
Mat image = imread(filename, IMREAD_COLOR);
ASSERT_FALSE(image.empty());
VideoCapture cap(filename, CAP_FFMPEG);
ASSERT_TRUE(cap.isOpened());
Mat frame1, frame2;
cap >> frame1 >> frame2;
ASSERT_FALSE(frame1.empty());
ASSERT_TRUE(frame2.empty());
ASSERT_EQ(0, cvtest::norm(image, frame1, NORM_INF));
}
//==========================================================================
typedef tuple<string, int, bool> videoio_read_params_t;
typedef testing::TestWithParam< testing::tuple<videoio_read_params_t, int, bool>> videoio_read;
TEST_P(videoio_read, threads)
{
const VideoCaptureAPIs api = CAP_FFMPEG;
if (!videoio_registry::hasBackend(api))
throw SkipTestException("Backend was not found");
const string fileName = get<0>(get<0>(GetParam()));
const int nFrames = get<1>(get<0>(GetParam()));
const bool fixedThreadCount = get<2>(get<0>(GetParam()));
const int nThreads = get<1>(GetParam());
const bool rawRead = get<2>(GetParam());
VideoCapture cap(findDataFile(fileName), api, { CAP_PROP_N_THREADS, nThreads });
if (!cap.isOpened())
throw SkipTestException("Video stream is not supported");
if (nThreads == 0 || fixedThreadCount)
EXPECT_EQ(cap.get(CAP_PROP_N_THREADS), VideoCapture(findDataFile(fileName), api).get(CAP_PROP_N_THREADS));
else
EXPECT_EQ(cap.get(CAP_PROP_N_THREADS), nThreads);
if (rawRead && !cap.set(CAP_PROP_FORMAT, -1)) // turn off video decoder (extract stream)
throw SkipTestException("Fetching of RAW video streams is not supported");
Mat frame;
int n = 0;
while (cap.read(frame)) {
ASSERT_FALSE(frame.empty());
n++;
}
ASSERT_EQ(n, nFrames);
}
const videoio_read_params_t videoio_read_params[] =
{
videoio_read_params_t("video/big_buck_bunny.h264", 125, false),
//videoio_read_params_t("video/big_buck_bunny.h265", 125, false),
videoio_read_params_t("video/big_buck_bunny.mjpg.avi", 125, true),
//videoio_read_params_t("video/big_buck_bunny.mov", 125, false),
//videoio_read_params_t("video/big_buck_bunny.mp4", 125, false),
//videoio_read_params_t("video/big_buck_bunny.mpg", 125, false),
//videoio_read_params_t("video/big_buck_bunny.wmv", 125, true),
};
INSTANTIATE_TEST_CASE_P(/**/, videoio_read, testing::Combine(testing::ValuesIn(videoio_read_params),
testing::Values(0, 1, 2, 50),
testing::Values(true, false)));
//==========================================================================
typedef tuple<VideoCaptureAPIs, string, string, string, string, string> videoio_container_params_t;
typedef testing::TestWithParam< videoio_container_params_t > videoio_container;
TEST_P(videoio_container, read)
{
const VideoCaptureAPIs api = get<0>(GetParam());
if (!videoio_registry::hasBackend(api))
throw SkipTestException("Backend was not found");
const string path = get<1>(GetParam());
const string ext = get<2>(GetParam());
const string ext_raw = get<3>(GetParam());
const string codec = get<4>(GetParam());
const string pixelFormat = get<5>(GetParam());
const string fileName = path + "." + ext;
const string fileNameOut = tempfile(cv::format("test_container_stream.%s", ext_raw.c_str()).c_str());
// Write encoded video read using VideoContainer to tmp file
size_t totalBytes = 0;
{
VideoCapture container(findDataFile(fileName), api);
if (!container.isOpened())
throw SkipTestException("Video stream is not supported");
if (!container.set(CAP_PROP_FORMAT, -1)) // turn off video decoder (extract stream)
throw SkipTestException("Fetching of RAW video streams is not supported");
ASSERT_EQ(-1.f, container.get(CAP_PROP_FORMAT)); // check
EXPECT_EQ(codec, fourccToString((int)container.get(CAP_PROP_FOURCC)));
EXPECT_EQ(pixelFormat, fourccToString((int)container.get(CAP_PROP_CODEC_PIXEL_FORMAT)));
std::ofstream file(fileNameOut.c_str(), ios::out | ios::trunc | std::ios::binary);
Mat raw_data;
while (true)
{
container >> raw_data;
size_t size = raw_data.total();
if (raw_data.empty())
break;
ASSERT_EQ(CV_8UC1, raw_data.type());
ASSERT_LE(raw_data.dims, 2);
ASSERT_EQ(raw_data.rows, 1);
ASSERT_EQ((size_t)raw_data.cols, raw_data.total());
ASSERT_TRUE(raw_data.isContinuous());
totalBytes += size;
file.write(reinterpret_cast<char*>(raw_data.data), size);
ASSERT_FALSE(file.fail());
}
ASSERT_GE(totalBytes, (size_t)39775) << "Encoded stream is too small";
}
std::cout << "Checking extracted video stream: " << fileNameOut << " (size: " << totalBytes << " bytes)" << std::endl;
// Check decoded frames read from original media are equal to frames decoded from tmp file
{
VideoCapture capReference(findDataFile(fileName), api);
ASSERT_TRUE(capReference.isOpened());
VideoCapture capActual(fileNameOut.c_str(), api);
ASSERT_TRUE(capActual.isOpened());
Mat reference, actual;
int nframes = 0, n_err = 0;
while (capReference.read(reference) && n_err < 3)
{
nframes++;
ASSERT_TRUE(capActual.read(actual)) << nframes;
EXPECT_EQ(0, cvtest::norm(actual, reference, NORM_INF)) << "frame=" << nframes << " err=" << ++n_err;
}
ASSERT_GT(nframes, 0);
}
ASSERT_EQ(0, remove(fileNameOut.c_str()));
}
const videoio_container_params_t videoio_container_params[] =
{
videoio_container_params_t(CAP_FFMPEG, "video/big_buck_bunny", "h264", "h264", "h264", "I420"),
videoio_container_params_t(CAP_FFMPEG, "video/big_buck_bunny", "h265", "h265", "hevc", "I420"),
videoio_container_params_t(CAP_FFMPEG, "video/big_buck_bunny", "mjpg.avi", "mjpg", "MJPG", "I420"),
videoio_container_params_t(CAP_FFMPEG, "video/sample_322x242_15frames.yuv420p.libx264", "mp4", "h264", "h264", "I420")
//videoio_container_params_t(CAP_FFMPEG, "video/big_buck_bunny", "h264.mkv", "mkv.h264", "h264", "I420"),
//videoio_container_params_t(CAP_FFMPEG, "video/big_buck_bunny", "h265.mkv", "mkv.h265", "hevc", "I420"),
//videoio_container_params_t(CAP_FFMPEG, "video/big_buck_bunny", "h264.mp4", "mp4.avc1", "avc1", "I420"),
//videoio_container_params_t(CAP_FFMPEG, "video/big_buck_bunny", "h265.mp4", "mp4.hev1", "hev1", "I420"),
};
INSTANTIATE_TEST_CASE_P(/**/, videoio_container, testing::ValuesIn(videoio_container_params));
typedef tuple<string, string, int> videoio_skip_params_t;
typedef testing::TestWithParam< videoio_skip_params_t > videoio_skip;
TEST_P(videoio_skip, DISABLED_read) // optional test, may fail in some configurations
{
#if CV_VERSION_MAJOR >= 4
if (!videoio_registry::hasBackend(CAP_FFMPEG))
throw SkipTestException("Backend was not found");
#endif
const string path = get<0>(GetParam());
const string env = get<1>(GetParam());
const int expectedFrameNumber = get<2>(GetParam());
#ifdef _WIN32
_putenv_s("OPENCV_FFMPEG_CAPTURE_OPTIONS", env.c_str());
#else
setenv("OPENCV_FFMPEG_CAPTURE_OPTIONS", env.c_str(), 1);
#endif
VideoCapture container(findDataFile(path), CAP_FFMPEG);
#ifdef _WIN32
_putenv_s("OPENCV_FFMPEG_CAPTURE_OPTIONS", "");
#else
setenv("OPENCV_FFMPEG_CAPTURE_OPTIONS", "", 1);
#endif
ASSERT_TRUE(container.isOpened());
Mat reference;
int nframes = 0, n_err = 0;
while (container.isOpened())
{
if (container.read(reference))
nframes++;
else if (++n_err > 3)
break;
}
EXPECT_EQ(expectedFrameNumber, nframes);
}
const videoio_skip_params_t videoio_skip_params[] =
{
videoio_skip_params_t("video/big_buck_bunny.mp4", "", 125),
videoio_skip_params_t("video/big_buck_bunny.mp4", "avdiscard;nonkey", 11)
};
INSTANTIATE_TEST_CASE_P(/**/, videoio_skip, testing::ValuesIn(videoio_skip_params));
//==========================================================================
static void generateFrame(Mat &frame, unsigned int i, const Point &center, const Scalar &color)
{
frame = Scalar::all(i % 255);
stringstream buf(ios::out);
buf << "frame #" << i;
putText(frame, buf.str(), Point(50, center.y), FONT_HERSHEY_SIMPLEX, 5.0, color, 5, LINE_AA);
circle(frame, center, i + 2, color, 2, LINE_AA);
}
TEST(videoio_ffmpeg, parallel)
{
if (!videoio_registry::hasBackend(CAP_FFMPEG))
throw SkipTestException("FFmpeg backend was not found");
const int NUM = 4;
const int GRAN = 4;
const Range R(0, NUM);
const Size sz(1020, 900);
const int frameNum = 300;
const Scalar color(Scalar::all(0));
const Point center(sz.height / 2, sz.width / 2);
// Generate filenames
vector<string> files;
for (int i = 0; i < NUM; ++i)
{
ostringstream stream;
stream << i << ".avi";
files.push_back(tempfile(stream.str().c_str()));
}
// Write videos
{
vector< Ptr<VideoWriter> > writers(NUM);
auto makeWriters = [&](const Range &r)
{
for (int i = r.start; i != r.end; ++i)
writers[i] = makePtr<VideoWriter>(files[i],
CAP_FFMPEG,
VideoWriter::fourcc('X','V','I','D'),
25.0f,
sz);
};
parallel_for_(R, makeWriters, GRAN);
for(int i = 0; i < NUM; ++i)
{
ASSERT_TRUE(writers[i]);
ASSERT_TRUE(writers[i]->isOpened());
}
auto writeFrames = [&](const Range &r)
{
for (int j = r.start; j < r.end; ++j)
{
Mat frame(sz, CV_8UC3);
for (int i = 0; i < frameNum; ++i)
{
generateFrame(frame, i, center, color);
writers[j]->write(frame);
}
}
};
parallel_for_(R, writeFrames, GRAN);
}
// Read videos
{
vector< Ptr<VideoCapture> > readers(NUM);
auto makeCaptures = [&](const Range &r)
{
for (int i = r.start; i != r.end; ++i)
readers[i] = makePtr<VideoCapture>(files[i], CAP_FFMPEG);
};
parallel_for_(R, makeCaptures, GRAN);
for(int i = 0; i < NUM; ++i)
{
ASSERT_TRUE(readers[i]);
ASSERT_TRUE(readers[i]->isOpened());
}
auto readFrames = [&](const Range &r)
{
for (int j = r.start; j < r.end; ++j)
{
Mat reference(sz, CV_8UC3);
for (int i = 0; i < frameNum; ++i)
{
Mat actual;
EXPECT_TRUE(readers[j]->read(actual));
EXPECT_FALSE(actual.empty());
generateFrame(reference, i, center, color);
EXPECT_EQ(reference.size(), actual.size());
EXPECT_EQ(reference.depth(), actual.depth());
EXPECT_EQ(reference.channels(), actual.channels());
EXPECT_GE(cvtest::PSNR(actual, reference), 35.0) << "cap" << j << ", frame " << i;
}
}
};
parallel_for_(R, readFrames, GRAN);
}
// Remove files
for(int i = 0; i < NUM; ++i)
{
remove(files[i].c_str());
}
}
typedef std::pair<VideoCaptureProperties, double> cap_property_t;
typedef std::vector<cap_property_t> cap_properties_t;
typedef std::pair<std::string, cap_properties_t> ffmpeg_cap_properties_param_t;
typedef testing::TestWithParam<ffmpeg_cap_properties_param_t> ffmpeg_cap_properties;
TEST_P(ffmpeg_cap_properties, can_read_property)
{
if (!videoio_registry::hasBackend(CAP_FFMPEG))
throw SkipTestException("FFmpeg backend was not found");
ffmpeg_cap_properties_param_t parameters = GetParam();
const std::string path = parameters.first;
const cap_properties_t properties = parameters.second;
VideoCapture cap(findDataFile(path), CAP_FFMPEG);
ASSERT_TRUE(cap.isOpened()) << "Can not open " << findDataFile(path);
for (std::size_t i = 0; i < properties.size(); ++i)
{
const cap_property_t& prop = properties[i];
const double actualValue = cap.get(static_cast<int>(prop.first));
EXPECT_DOUBLE_EQ(actualValue, prop.second)
<< "Property " << static_cast<int>(prop.first) << " has wrong value";
}
}
cap_properties_t loadBigBuckBunnyFFProbeResults() {
cap_property_t properties[] = { cap_property_t(CAP_PROP_BITRATE, 5851.),
cap_property_t(CAP_PROP_FPS, 24.),
cap_property_t(CAP_PROP_FRAME_HEIGHT, 384.),
cap_property_t(CAP_PROP_FRAME_WIDTH, 672.) };
return cap_properties_t(properties, properties + sizeof(properties) / sizeof(cap_property_t));
}
const ffmpeg_cap_properties_param_t videoio_ffmpeg_properties[] = {
ffmpeg_cap_properties_param_t("video/big_buck_bunny.avi", loadBigBuckBunnyFFProbeResults())
};
INSTANTIATE_TEST_CASE_P(videoio, ffmpeg_cap_properties, testing::ValuesIn(videoio_ffmpeg_properties));
typedef tuple<string, string> ffmpeg_get_fourcc_param_t;
typedef testing::TestWithParam<ffmpeg_get_fourcc_param_t> ffmpeg_get_fourcc;
TEST_P(ffmpeg_get_fourcc, check_short_codecs)
{
const VideoCaptureAPIs api = CAP_FFMPEG;
if (!videoio_registry::hasBackend(api))
throw SkipTestException("Backend was not found");
const string fileName = get<0>(GetParam());
const string fourcc_string = get<1>(GetParam());
VideoCapture cap(findDataFile(fileName), api);
if (!cap.isOpened())
throw SkipTestException("Video stream is not supported");
const double fourcc = cap.get(CAP_PROP_FOURCC);
ASSERT_EQ(fourcc_string, fourccToString((int)fourcc));
}
const ffmpeg_get_fourcc_param_t ffmpeg_get_fourcc_param[] =
{
ffmpeg_get_fourcc_param_t("../cv/tracking/faceocc2/data/faceocc2.webm", "VP80"),
ffmpeg_get_fourcc_param_t("video/big_buck_bunny.h265", "hevc"),
ffmpeg_get_fourcc_param_t("video/big_buck_bunny.h264", "h264"),
ffmpeg_get_fourcc_param_t("video/sample_322x242_15frames.yuv420p.libvpx-vp9.mp4", "VP90"),
ffmpeg_get_fourcc_param_t("video/sample_322x242_15frames.yuv420p.libaom-av1.mp4", "AV01"),
ffmpeg_get_fourcc_param_t("video/big_buck_bunny.mp4", "FMP4"),
ffmpeg_get_fourcc_param_t("video/sample_322x242_15frames.yuv420p.mpeg2video.mp4", "mpg2"),
ffmpeg_get_fourcc_param_t("video/sample_322x242_15frames.yuv420p.mjpeg.mp4", "MJPG"),
ffmpeg_get_fourcc_param_t("video/sample_322x242_15frames.yuv420p.libxvid.mp4", "FMP4"),
ffmpeg_get_fourcc_param_t("video/sample_322x242_15frames.yuv420p.libx265.mp4", "hevc"),
ffmpeg_get_fourcc_param_t("video/sample_322x242_15frames.yuv420p.libx264.mp4", "h264")
};
INSTANTIATE_TEST_CASE_P(videoio, ffmpeg_get_fourcc, testing::ValuesIn(ffmpeg_get_fourcc_param));
static void ffmpeg_check_read_raw(VideoCapture& cap)
{
ASSERT_TRUE(cap.isOpened()) << "Can't open the video";
Mat data;
cap >> data;
EXPECT_EQ(CV_8UC1, data.type()) << "CV_8UC1 != " << typeToString(data.type());
EXPECT_TRUE(data.rows == 1 || data.cols == 1) << data.size;
EXPECT_EQ((size_t)29729, data.total());
cap >> data;
EXPECT_EQ(CV_8UC1, data.type()) << "CV_8UC1 != " << typeToString(data.type());
EXPECT_TRUE(data.rows == 1 || data.cols == 1) << data.size;
EXPECT_EQ((size_t)37118, data.total());
#ifndef WIN32
// 12 is the nearset key frame to frame 18
EXPECT_TRUE(cap.set(CAP_PROP_POS_FRAMES, 18.));
EXPECT_EQ(cap.get(CAP_PROP_POS_FRAMES), 12.);
cap >> data;
EXPECT_EQ(CV_8UC1, data.type()) << "CV_8UC1 != " << typeToString(data.type());
EXPECT_TRUE(data.rows == 1 || data.cols == 1) << data.size;
EXPECT_EQ((size_t)8726, data.total());
#endif
}
TEST(videoio_ffmpeg, ffmpeg_check_extra_data)
{
if (!videoio_registry::hasBackend(CAP_FFMPEG))
throw SkipTestException("FFmpeg backend was not found");
string video_file = findDataFile("video/big_buck_bunny.mp4");
VideoCapture cap;
EXPECT_NO_THROW(cap.open(video_file, CAP_FFMPEG));
ASSERT_TRUE(cap.isOpened()) << "Can't open the video";
const int codecExtradataIdx = (int)cap.get(CAP_PROP_CODEC_EXTRADATA_INDEX);
Mat data;
ASSERT_TRUE(cap.retrieve(data, codecExtradataIdx));
EXPECT_EQ(CV_8UC1, data.type()) << "CV_8UC1 != " << typeToString(data.type());
EXPECT_TRUE(data.rows == 1 || data.cols == 1) << data.size;
EXPECT_EQ((size_t)45, data.total());
}
TEST(videoio_ffmpeg, open_with_property)
{
if (!videoio_registry::hasBackend(CAP_FFMPEG))
throw SkipTestException("FFmpeg backend was not found");
string video_file = findDataFile("video/big_buck_bunny.mp4");
VideoCapture cap;
EXPECT_NO_THROW(cap.open(video_file, CAP_FFMPEG, {
CAP_PROP_FORMAT, -1 // demux only
}));
// confirm properties are returned without initializing AVCodecContext
EXPECT_EQ(cap.get(CAP_PROP_FORMAT), -1);
EXPECT_EQ(static_cast<int>(cap.get(CAP_PROP_FOURCC)), fourccFromString("FMP4"));
#ifndef WIN32
EXPECT_EQ(cap.get(CAP_PROP_N_THREADS), 0.0);
#endif
EXPECT_EQ(cap.get(CAP_PROP_FRAME_HEIGHT), 384.0);
EXPECT_EQ(cap.get(CAP_PROP_FRAME_WIDTH), 672.0);
EXPECT_EQ(cap.get(CAP_PROP_FRAME_COUNT), 125);
EXPECT_EQ(cap.get(CAP_PROP_FPS), 24.0);
ffmpeg_check_read_raw(cap);
}
TEST(videoio_ffmpeg, create_with_property)
{
if (!videoio_registry::hasBackend(CAP_FFMPEG))
throw SkipTestException("FFmpeg backend was not found");
string video_file = findDataFile("video/big_buck_bunny.mp4");
VideoCapture cap(video_file, CAP_FFMPEG, {
CAP_PROP_FORMAT, -1 // demux only
});
// confirm properties are returned without initializing AVCodecContext
EXPECT_TRUE(cap.get(CAP_PROP_FORMAT) == -1);
EXPECT_EQ(static_cast<int>(cap.get(CAP_PROP_FOURCC)), fourccFromString("FMP4"));
#ifndef WIN32
EXPECT_EQ(cap.get(CAP_PROP_N_THREADS), 0.0);
#endif
EXPECT_EQ(cap.get(CAP_PROP_FRAME_HEIGHT), 384.0);
EXPECT_EQ(cap.get(CAP_PROP_FRAME_WIDTH), 672.0);
EXPECT_EQ(cap.get(CAP_PROP_FRAME_COUNT), 125);
EXPECT_EQ(cap.get(CAP_PROP_FPS), 24.0);
ffmpeg_check_read_raw(cap);
}
TEST(videoio_ffmpeg, create_with_property_badarg)
{
if (!videoio_registry::hasBackend(CAP_FFMPEG))
throw SkipTestException("FFmpeg backend was not found");
string video_file = findDataFile("video/big_buck_bunny.mp4");
VideoCapture cap(video_file, CAP_FFMPEG, {
CAP_PROP_FORMAT, -2 // invalid
});
EXPECT_FALSE(cap.isOpened());
}
// related issue: https://github.com/opencv/opencv/issues/16821
TEST(videoio_ffmpeg, DISABLED_open_from_web)
{
if (!videoio_registry::hasBackend(CAP_FFMPEG))
throw SkipTestException("FFmpeg backend was not found");
string video_file = "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4";
VideoCapture cap(video_file, CAP_FFMPEG);
int n_frames = -1;
EXPECT_NO_THROW(n_frames = (int)cap.get(CAP_PROP_FRAME_COUNT));
EXPECT_EQ((int)14315, n_frames);
}
typedef tuple<string, string, bool, bool> FourCC_Ext_Color_Support;
typedef testing::TestWithParam< FourCC_Ext_Color_Support > videoio_ffmpeg_16bit;
TEST_P(videoio_ffmpeg_16bit, basic)
{
if (!videoio_registry::hasBackend(CAP_FFMPEG))
throw SkipTestException("FFmpeg backend was not found");
const int fourcc = fourccFromString(get<0>(GetParam()));
const string ext = string(".") + get<1>(GetParam());
const bool isColor = get<2>(GetParam());
const bool isSupported = get<3>(GetParam());
const int cn = isColor ? 3 : 1;
const int dataType = CV_16UC(cn);
const string filename = tempfile(ext.c_str());
const Size sz(640, 480);
const double fps = 30.0;
const double time_sec = 1;
const int numFrames = static_cast<int>(fps * time_sec);
{
VideoWriter writer;
writer.open(filename, CAP_FFMPEG, fourcc, fps, sz,
{
VIDEOWRITER_PROP_DEPTH, CV_16U,
VIDEOWRITER_PROP_IS_COLOR, isColor
});
ASSERT_EQ(isSupported, writer.isOpened());
if (isSupported)
{
Mat img(sz, dataType, Scalar::all(0));
const int coeff = cvRound(min(sz.width, sz.height)/(fps * time_sec));
for (int i = 0 ; i < numFrames; i++ )
{
rectangle(img,
Point2i(coeff * i, coeff * i),
Point2i(coeff * (i + 1), coeff * (i + 1)),
Scalar::all(255 * (1.0 - static_cast<double>(i) / (fps * time_sec * 2))),
-1);
writer << img;
}
writer.release();
EXPECT_GT(getFileSize(filename), 8192);
}
}
if (isSupported)
{
VideoCapture cap;
ASSERT_TRUE(cap.open(filename, CAP_FFMPEG, {CAP_PROP_CONVERT_RGB, false}));
ASSERT_TRUE(cap.isOpened());
Mat img;
bool res = true;
int numRead = 0;
while(res)
{
res = cap.read(img);
if (res)
{
++numRead;
ASSERT_EQ(img.type(), dataType);
ASSERT_EQ(img.size(), sz);
}
}
ASSERT_EQ(numRead, numFrames);
remove(filename.c_str());
}
}
const FourCC_Ext_Color_Support sixteen_bit_modes[] =
{
// 16-bit grayscale is supported
make_tuple("FFV1", "avi", false, true),
make_tuple("FFV1", "mkv", false, true),
// 16-bit color formats are NOT supported
make_tuple("FFV1", "avi", true, false),
make_tuple("FFV1", "mkv", true, false),
};
INSTANTIATE_TEST_CASE_P(/**/, videoio_ffmpeg_16bit, testing::ValuesIn(sixteen_bit_modes));
}} // namespace
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