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Sur d’autres sites (9502)
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Ffmpeg in Android Studio
7 décembre 2016, par Ahmed Abd-Elmegedi’am trying to add Ffmpeg library to use it in Live Streaming app based in Youtube APi when i add it and i use Cmake Build tool the header files only shown in the c native class which i create and i want it to be included in the other header files
which came with library how can i do it in cmake script or onther way ?This my cmake build script
# Sets the minimum version of CMake required to build the native
# library. You should either keep the default value or only pass a
# value of 3.4.0 or lower.
cmake_minimum_required(VERSION 3.4.1)
# Creates and names a library, sets it as either STATIC
# or SHARED, and provides the relative paths to its source code.
# You can define multiple libraries, and CMake builds it for you.
# Gradle automatically packages shared libraries with your APK.
add_library( # Sets the name of the library.
ffmpeg-jni
# Sets the library as a shared library.
SHARED
# Provides a relative path to your source file(s).
# Associated headers in the same location as their source
# file are automatically included.
src/main/cpp/ffmpeg-jni.c )
# Searches for a specified prebuilt library and stores the path as a
# variable. Because system libraries are included in the search path by
# default, you only need to specify the name of the public NDK library
# you want to add. CMake verifies that the library exists before
# completing its build.
find_library( # Sets the name of the path variable.
log-lib
# Specifies the name of the NDK library that
# you want CMake to locate.
log )
# Specifies libraries CMake should link to your target library. You
# can link multiple libraries, such as libraries you define in the
# build script, prebuilt third-party libraries, or system libraries.
target_link_libraries( # Specifies the target library.
ffmpeg-jni
# Links the target library to the log library
# included in the NDK.
${log-lib} )
include_directories(src/main/cpp/include/ffmpeglib)
include_directories(src/main/cpp/include/libavcodec)
include_directories(src/main/cpp/include/libavformat)
include_directories(src/main/cpp/include/libavutil)This my native class i create as native file i android studio and i also have an error in jintJNIcall not found
#include <android></android>log.h>
#include
#include
#include "libavcodec/avcodec.h"
#include "libavformat/avformat.h"
#include "libavutil/opt.h"
#ifdef __cplusplus
extern "C" {
#endif
JNIEXPORT jboolean
JNICALL Java_com_example_venrto_ffmpegtest_Ffmpeg_init(JNIEnv *env, jobject thiz,
jint width, jint height,
jint audio_sample_rate,
jstring rtmp_url);
JNIEXPORT void JNICALL Java_com_example_venrto_ffmpegtest_Ffmpeg_shutdown(JNIEnv
*env,
jobject thiz
);
JNIEXPORT jintJNICALL
Java_com_example_venrto_ffmpegtest_Ffmpeg_encodeVideoFrame(JNIEnv
*env,
jobject thiz,
jbyteArray
yuv_image);
JNIEXPORT jint
JNICALL Java_com_example_venrto_ffmpegtest_Ffmpeg_encodeAudioFrame(JNIEnv *env,
jobject thiz,
jshortArray audio_data,
jint length);
#ifdef __cplusplus
}
#endif
#define LOGI(...) __android_log_print(ANDROID_LOG_INFO, "ffmpeg-jni", __VA_ARGS__)
#define URL_WRONLY 2
static AVFormatContext *fmt_context;
static AVStream *video_stream;
static AVStream *audio_stream;
static int pts
= 0;
static int last_audio_pts = 0;
// Buffers for UV format conversion
static unsigned char *u_buf;
static unsigned char *v_buf;
static int enable_audio = 1;
static int64_t audio_samples_written = 0;
static int audio_sample_rate = 0;
// Stupid buffer for audio samples. Not even a proper ring buffer
#define AUDIO_MAX_BUF_SIZE 16384 // 2x what we get from Java
static short audio_buf[AUDIO_MAX_BUF_SIZE];
static int audio_buf_size = 0;
void AudioBuffer_Push(const short *audio, int num_samples) {
if (audio_buf_size >= AUDIO_MAX_BUF_SIZE - num_samples) {
LOGI("AUDIO BUFFER OVERFLOW: %i + %i > %i", audio_buf_size, num_samples,
AUDIO_MAX_BUF_SIZE);
return;
}
for (int i = 0; i < num_samples; i++) {
audio_buf[audio_buf_size++] = audio[i];
}
}
int AudioBuffer_Size() { return audio_buf_size; }
short *AudioBuffer_Get() { return audio_buf; }
void AudioBuffer_Pop(int num_samples) {
if (num_samples > audio_buf_size) {
LOGI("Audio buffer Pop WTF: %i vs %i", num_samples, audio_buf_size);
return;
}
memmove(audio_buf, audio_buf + num_samples, num_samples * sizeof(short));
audio_buf_size -= num_samples;
}
void AudioBuffer_Clear() {
memset(audio_buf, 0, sizeof(audio_buf));
audio_buf_size = 0;
}
static void log_callback(void *ptr, int level, const char *fmt, va_list vl) {
char x[2048];
vsnprintf(x, 2048, fmt, vl);
LOGI(x);
}
JNIEXPORT jboolean
JNICALL Java_com_example_venrto_ffmpegtest_Ffmpeg_init(JNIEnv *env, jobject thiz,
jint width, jint height,
jint audio_sample_rate_param,
jstring rtmp_url) {
avcodec_register_all();
av_register_all();
av_log_set_callback(log_callback);
fmt_context = avformat_alloc_context();
AVOutputFormat *ofmt = av_guess_format("flv", NULL, NULL);
if (ofmt) {
LOGI("av_guess_format returned %s", ofmt->long_name);
} else {
LOGI("av_guess_format fail");
return JNI_FALSE;
}
fmt_context->oformat = ofmt;
LOGI("creating video stream");
video_stream = av_new_stream(fmt_context, 0);
if (enable_audio) {
LOGI("creating audio stream");
audio_stream = av_new_stream(fmt_context, 1);
}
// Open Video Codec.
// ======================
AVCodec *video_codec = avcodec_find_encoder(AV_CODEC_ID_H264);
if (!video_codec) {
LOGI("Did not find the video codec");
return JNI_FALSE; // leak!
} else {
LOGI("Video codec found!");
}
AVCodecContext *video_codec_ctx = video_stream->codec;
video_codec_ctx->codec_id = video_codec->id;
video_codec_ctx->codec_type = AVMEDIA_TYPE_VIDEO;
video_codec_ctx->level = 31;
video_codec_ctx->width = width;
video_codec_ctx->height = height;
video_codec_ctx->pix_fmt = PIX_FMT_YUV420P;
video_codec_ctx->rc_max_rate = 0;
video_codec_ctx->rc_buffer_size = 0;
video_codec_ctx->gop_size = 12;
video_codec_ctx->max_b_frames = 0;
video_codec_ctx->slices = 8;
video_codec_ctx->b_frame_strategy = 1;
video_codec_ctx->coder_type = 0;
video_codec_ctx->me_cmp = 1;
video_codec_ctx->me_range = 16;
video_codec_ctx->qmin = 10;
video_codec_ctx->qmax = 51;
video_codec_ctx->keyint_min = 25;
video_codec_ctx->refs = 3;
video_codec_ctx->trellis = 0;
video_codec_ctx->scenechange_threshold = 40;
video_codec_ctx->flags |= CODEC_FLAG_LOOP_FILTER;
video_codec_ctx->me_method = ME_HEX;
video_codec_ctx->me_subpel_quality = 6;
video_codec_ctx->i_quant_factor = 0.71;
video_codec_ctx->qcompress = 0.6;
video_codec_ctx->max_qdiff = 4;
video_codec_ctx->time_base.den = 10;
video_codec_ctx->time_base.num = 1;
video_codec_ctx->bit_rate = 3200 * 1000;
video_codec_ctx->bit_rate_tolerance = 0;
video_codec_ctx->flags2 |= 0x00000100;
fmt_context->bit_rate = 4000 * 1000;
av_opt_set(video_codec_ctx, "partitions", "i8x8,i4x4,p8x8,b8x8", 0);
av_opt_set_int(video_codec_ctx, "direct-pred", 1, 0);
av_opt_set_int(video_codec_ctx, "rc-lookahead", 0, 0);
av_opt_set_int(video_codec_ctx, "fast-pskip", 1, 0);
av_opt_set_int(video_codec_ctx, "mixed-refs", 1, 0);
av_opt_set_int(video_codec_ctx, "8x8dct", 0, 0);
av_opt_set_int(video_codec_ctx, "weightb", 0, 0);
if (fmt_context->oformat->flags & AVFMT_GLOBALHEADER)
video_codec_ctx->flags |= CODEC_FLAG_GLOBAL_HEADER;
LOGI("Opening video codec");
AVDictionary *vopts = NULL;
av_dict_set(&vopts, "profile", "main", 0);
//av_dict_set(&vopts, "vprofile", "main", 0);
av_dict_set(&vopts, "rc-lookahead", 0, 0);
av_dict_set(&vopts, "tune", "film", 0);
av_dict_set(&vopts, "preset", "ultrafast", 0);
av_opt_set(video_codec_ctx->priv_data, "tune", "film", 0);
av_opt_set(video_codec_ctx->priv_data, "preset", "ultrafast", 0);
av_opt_set(video_codec_ctx->priv_data, "tune", "film", 0);
int open_res = avcodec_open2(video_codec_ctx, video_codec, &vopts);
if (open_res < 0) {
LOGI("Error opening video codec: %i", open_res);
return JNI_FALSE; // leak!
}
// Open Audio Codec.
// ======================
if (enable_audio) {
AudioBuffer_Clear();
audio_sample_rate = audio_sample_rate_param;
AVCodec *audio_codec = avcodec_find_encoder(AV_CODEC_ID_AAC);
if (!audio_codec) {
LOGI("Did not find the audio codec");
return JNI_FALSE; // leak!
} else {
LOGI("Audio codec found!");
}
AVCodecContext *audio_codec_ctx = audio_stream->codec;
audio_codec_ctx->codec_id = audio_codec->id;
audio_codec_ctx->codec_type = AVMEDIA_TYPE_AUDIO;
audio_codec_ctx->bit_rate = 128000;
audio_codec_ctx->bit_rate_tolerance = 16000;
audio_codec_ctx->channels = 1;
audio_codec_ctx->profile = FF_PROFILE_AAC_LOW;
audio_codec_ctx->sample_fmt = AV_SAMPLE_FMT_FLT;
audio_codec_ctx->sample_rate = 44100;
LOGI("Opening audio codec");
AVDictionary *opts = NULL;
av_dict_set(&opts, "strict", "experimental", 0);
open_res = avcodec_open2(audio_codec_ctx, audio_codec, &opts);
LOGI("audio frame size: %i", audio_codec_ctx->frame_size);
if (open_res < 0) {
LOGI("Error opening audio codec: %i", open_res);
return JNI_FALSE; // leak!
}
}
const jbyte *url = (*env)->GetStringUTFChars(env, rtmp_url, NULL);
// Point to an output file
if (!(ofmt->flags & AVFMT_NOFILE)) {
if (avio_open(&fmt_context->pb, url, URL_WRONLY) < 0) {
LOGI("ERROR: Could not open file %s", url);
return JNI_FALSE; // leak!
}
}
(*env)->ReleaseStringUTFChars(env, rtmp_url, url);
LOGI("Writing output header.");
// Write file header
if (avformat_write_header(fmt_context, NULL) != 0) {
LOGI("ERROR: av_write_header failed");
return JNI_FALSE;
}
pts = 0;
last_audio_pts = 0;
audio_samples_written = 0;
// Initialize buffers for UV format conversion
int frame_size = video_codec_ctx->width * video_codec_ctx->height;
u_buf = (unsigned char *) av_malloc(frame_size / 4);
v_buf = (unsigned char *) av_malloc(frame_size / 4);
LOGI("ffmpeg encoding init done");
return JNI_TRUE;
}
JNIEXPORT void JNICALL
Java_com_example_venrto_ffmpegtest_Ffmpeg_shutdown(JNIEnv
*env,
jobject thiz
) {
av_write_trailer(fmt_context);
avio_close(fmt_context
->pb);
avcodec_close(video_stream
->codec);
if (enable_audio) {
avcodec_close(audio_stream
->codec);
}
av_free(fmt_context);
av_free(u_buf);
av_free(v_buf);
fmt_context = NULL;
u_buf = NULL;
v_buf = NULL;
}
JNIEXPORT jintJNICALL
Java_com_example_venrto_ffmpegtest_Ffmpeg_encodeVideoFrame(JNIEnv
*env,
jobject thiz,
jbyteArray
yuv_image) {
int yuv_length = (*env)->GetArrayLength(env, yuv_image);
unsigned char *yuv_data = (*env)->GetByteArrayElements(env, yuv_image, 0);
AVCodecContext *video_codec_ctx = video_stream->codec;
//LOGI("Yuv size: %i w: %i h: %i", yuv_length, video_codec_ctx->width, video_codec_ctx->height);
int frame_size = video_codec_ctx->width * video_codec_ctx->height;
const unsigned char *uv = yuv_data + frame_size;
// Convert YUV from NV12 to I420. Y channel is the same so we don't touch it,
// we just have to deinterleave UV.
for (
int i = 0;
i < frame_size / 4; i++) {
v_buf[i] = uv[i * 2];
u_buf[i] = uv[i * 2 + 1];
}
AVFrame source;
memset(&source, 0, sizeof(AVFrame));
source.data[0] =
yuv_data;
source.data[1] =
u_buf;
source.data[2] =
v_buf;
source.linesize[0] = video_codec_ctx->
width;
source.linesize[1] = video_codec_ctx->width / 2;
source.linesize[2] = video_codec_ctx->width / 2;
// only for bitrate regulation. irrelevant for sync.
source.
pts = pts;
pts++;
int out_length = frame_size + (frame_size / 2);
unsigned char *out = (unsigned char *) av_malloc(out_length);
int compressed_length = avcodec_encode_video(video_codec_ctx, out, out_length, &source);
(*env)->
ReleaseByteArrayElements(env, yuv_image, yuv_data,
0);
// Write to file too
if (compressed_length > 0) {
AVPacket pkt;
av_init_packet(&pkt);
pkt.
pts = last_audio_pts;
if (video_codec_ctx->coded_frame && video_codec_ctx->coded_frame->key_frame) {
pkt.flags |= 0x0001;
}
pkt.
stream_index = video_stream->index;
pkt.
data = out;
pkt.
size = compressed_length;
if (
av_interleaved_write_frame(fmt_context,
&pkt) != 0) {
LOGI("Error writing video frame");
}
} else {
LOGI("??? compressed_length <= 0");
}
last_audio_pts++;
av_free(out);
return
compressed_length;
}
JNIEXPORT jintJNICALL
Java_com_example_venrto_ffmpegtest_Ffmpeg_encodeAudioFrame(JNIEnv
*env,
jobject thiz,
jshortArray
audio_data,
jint length
) {
if (!enable_audio) {
return 0;
}
short *audio = (*env)->GetShortArrayElements(env, audio_data, 0);
//LOGI("java audio buffer size: %i", length);
AVCodecContext *audio_codec_ctx = audio_stream->codec;
unsigned char *out = av_malloc(128000);
AudioBuffer_Push(audio, length
);
int total_compressed = 0;
while (
AudioBuffer_Size()
>= audio_codec_ctx->frame_size) {
AVPacket pkt;
av_init_packet(&pkt);
int compressed_length = avcodec_encode_audio(audio_codec_ctx, out, 128000,
AudioBuffer_Get());
total_compressed +=
compressed_length;
audio_samples_written += audio_codec_ctx->
frame_size;
int new_pts = (audio_samples_written * 1000) / audio_sample_rate;
if (compressed_length > 0) {
pkt.
size = compressed_length;
pkt.
pts = new_pts;
last_audio_pts = new_pts;
//LOGI("audio_samples_written: %i comp_length: %i pts: %i", (int)audio_samples_written, (int)compressed_length, (int)new_pts);
pkt.flags |= 0x0001;
pkt.
stream_index = audio_stream->index;
pkt.
data = out;
if (
av_interleaved_write_frame(fmt_context,
&pkt) != 0) {
LOGI("Error writing audio frame");
}
}
AudioBuffer_Pop(audio_codec_ctx
->frame_size);
}
(*env)->
ReleaseShortArrayElements(env, audio_data, audio,
0);
av_free(out);
return
total_compressed;
}this an example for a header file which i have an error include
#include "libavutil/samplefmt.h"
#include "libavutil/avutil.h"
#include "libavutil/cpu.h"
#include "libavutil/dict.h"
#include "libavutil/log.h"
#include "libavutil/pixfmt.h"
#include "libavutil/rational.h"
#include "libavutil/version.h"in the libavcodec/avcodec.h
This code based in this example :
https://github.com/youtube/yt-watchme -
Java.lang.UnsatisfiedLinkError : No implementation found for int [duplicate]
28 mars 2017, par Muthukumar SubramaniamThis question already has an answer here :
I executed youtube watch me android application project. I just add some classes in my project and build with ndk. I got the error like
java.lang.UnsatisfiedLinkError : No implementation found for int com.ephronsystem.mobilizerapp.Ffmpeg.encodeVideoFrame(byte[]) (tried Java_com_ephronsystem_mobilizerapp_Ffmpeg_encodeVideoFrame and Java_com_ephronsystem_mobilizerapp_Ffmpeg_encodeVideoFrame___3B).
My code :
package com.ephronsystem.mobilizerapp;
public class Ffmpeg {
static {
System.loadLibrary("ffmpeg");
}
public static native boolean init(int width, int height, int audio_sample_rate, String rtmpUrl);
public static native void shutdown();
// Returns the size of the encoded frame.
public static native int encodeVideoFrame(byte[] yuv_image);
public static native int encodeAudioFrame(short[] audio_data, int length);
}This is ffmpeg-jni.c
#include <android></android>log.h>
#include
#include
#include "libavcodec/avcodec.h"
#include "libavformat/avformat.h"
#include "libavutil/opt.h"
#ifdef __cplusplus
extern "C" {
#endif
JNIEXPORT jboolean JNICALL Java_com_ephronsystem_mobilizerapp_Ffmpeg_init(JNIEnv *env, jobject thiz,
jint width, jint height,
jint audio_sample_rate,
jstring rtmp_url);
JNIEXPORT void JNICALL Java_com_ephronsystem_mobilizerapp_Ffmpeg_shutdown(JNIEnv *env,
jobject thiz
);
JNIEXPORT jint JNICALL Java_com_ephronsystem_mobilizerapp_Ffmpeg_encodeVideoFrame(JNIEnv
*env,
jobject thiz,
jbyteArray
yuv_image);
JNIEXPORT jint JNICALL Java_com_ephronsystem_mobilizerapp_Ffmpeg_encodeAudioFrame(JNIEnv *env,
jobject thiz,
jshortArray audio_data,
jint length);
#ifdef __cplusplus
}
#endif
#define LOGI(...) __android_log_print(ANDROID_LOG_INFO, "ffmpeg-jni", __VA_ARGS__)
#define URL_WRONLY 2
static AVFormatContext *fmt_context;
static AVStream *video_stream;
static AVStream *audio_stream;
static int pts
= 0;
static int last_audio_pts = 0;
// Buffers for UV format conversion
static unsigned char *u_buf;
static unsigned char *v_buf;
static int enable_audio = 1;
static int64_t audio_samples_written = 0;
static int audio_sample_rate = 0;
// Stupid buffer for audio samples. Not even a proper ring buffer
#define AUDIO_MAX_BUF_SIZE 16384 // 2x what we get from Java
static short audio_buf[AUDIO_MAX_BUF_SIZE];
static int audio_buf_size = 0;
void AudioBuffer_Push(const short *audio, int num_samples) {
if (audio_buf_size >= AUDIO_MAX_BUF_SIZE - num_samples) {
LOGI("AUDIO BUFFER OVERFLOW: %i + %i > %i", audio_buf_size, num_samples,
AUDIO_MAX_BUF_SIZE);
return;
}
for (int i = 0; i < num_samples; i++) {
audio_buf[audio_buf_size++] = audio[i];
}
}
int AudioBuffer_Size() { return audio_buf_size; }
short *AudioBuffer_Get() { return audio_buf; }
void AudioBuffer_Pop(int num_samples) {
if (num_samples > audio_buf_size) {
LOGI("Audio buffer Pop WTF: %i vs %i", num_samples, audio_buf_size);
return;
}
memmove(audio_buf, audio_buf + num_samples, num_samples * sizeof(short));
audio_buf_size -= num_samples;
}
void AudioBuffer_Clear() {
memset(audio_buf, 0, sizeof(audio_buf));
audio_buf_size = 0;
}
static void log_callback(void *ptr, int level, const char *fmt, va_list vl) {
char x[2048];
vsnprintf(x, 2048, fmt, vl);
LOGI(x);
}
JNIEXPORT jboolean JNICALL Java_com_ephronsystem_mobilizerapp_Ffmpeg_init(JNIEnv *env, jobject thiz,
jint width, jint height,
jint audio_sample_rate_param,
jstring rtmp_url) {
avcodec_register_all();
av_register_all();
av_log_set_callback(log_callback);
fmt_context = avformat_alloc_context();
AVOutputFormat *ofmt = av_guess_format("flv", NULL, NULL);
if (ofmt) {
LOGI("av_guess_format returned %s", ofmt->long_name);
} else {
LOGI("av_guess_format fail");
return JNI_FALSE;
}
fmt_context->oformat = ofmt;
LOGI("creating video stream");
video_stream = av_new_stream(fmt_context, 0);
if (enable_audio) {
LOGI("creating audio stream");
audio_stream = av_new_stream(fmt_context, 1);
}
// Open Video Codec.
// ======================
AVCodec *video_codec = avcodec_find_encoder(AV_CODEC_ID_H264);
if (!video_codec) {
LOGI("Did not find the video codec");
return JNI_FALSE; // leak!
} else {
LOGI("Video codec found!");
}
AVCodecContext *video_codec_ctx = video_stream->codec;
video_codec_ctx->codec_id = video_codec->id;
video_codec_ctx->codec_type = AVMEDIA_TYPE_VIDEO;
video_codec_ctx->level = 31;
video_codec_ctx->width = width;
video_codec_ctx->height = height;
video_codec_ctx->pix_fmt = PIX_FMT_YUV420P;
video_codec_ctx->rc_max_rate = 0;
video_codec_ctx->rc_buffer_size = 0;
video_codec_ctx->gop_size = 12;
video_codec_ctx->max_b_frames = 0;
video_codec_ctx->slices = 8;
video_codec_ctx->b_frame_strategy = 1;
video_codec_ctx->coder_type = 0;
video_codec_ctx->me_cmp = 1;
video_codec_ctx->me_range = 16;
video_codec_ctx->qmin = 10;
video_codec_ctx->qmax = 51;
video_codec_ctx->keyint_min = 25;
video_codec_ctx->refs = 3;
video_codec_ctx->trellis = 0;
video_codec_ctx->scenechange_threshold = 40;
video_codec_ctx->flags |= CODEC_FLAG_LOOP_FILTER;
video_codec_ctx->me_method = ME_HEX;
video_codec_ctx->me_subpel_quality = 6;
video_codec_ctx->i_quant_factor = 0.71;
video_codec_ctx->qcompress = 0.6;
video_codec_ctx->max_qdiff = 4;
video_codec_ctx->time_base.den = 10;
video_codec_ctx->time_base.num = 1;
video_codec_ctx->bit_rate = 3200 * 1000;
video_codec_ctx->bit_rate_tolerance = 0;
video_codec_ctx->flags2 |= 0x00000100;
fmt_context->bit_rate = 4000 * 1000;
av_opt_set(video_codec_ctx, "partitions", "i8x8,i4x4,p8x8,b8x8", 0);
av_opt_set_int(video_codec_ctx, "direct-pred", 1, 0);
av_opt_set_int(video_codec_ctx, "rc-lookahead", 0, 0);
av_opt_set_int(video_codec_ctx, "fast-pskip", 1, 0);
av_opt_set_int(video_codec_ctx, "mixed-refs", 1, 0);
av_opt_set_int(video_codec_ctx, "8x8dct", 0, 0);
av_opt_set_int(video_codec_ctx, "weightb", 0, 0);
if (fmt_context->oformat->flags & AVFMT_GLOBALHEADER)
video_codec_ctx->flags |= CODEC_FLAG_GLOBAL_HEADER;
LOGI("Opening video codec");
AVDictionary *vopts = NULL;
av_dict_set(&vopts, "profile", "main", 0);
//av_dict_set(&vopts, "vprofile", "main", 0);
av_dict_set(&vopts, "rc-lookahead", 0, 0);
av_dict_set(&vopts, "tune", "film", 0);
av_dict_set(&vopts, "preset", "ultrafast", 0);
av_opt_set(video_codec_ctx->priv_data, "tune", "film", 0);
av_opt_set(video_codec_ctx->priv_data, "preset", "ultrafast", 0);
av_opt_set(video_codec_ctx->priv_data, "tune", "film", 0);
int open_res = avcodec_open2(video_codec_ctx, video_codec, &vopts);
if (open_res < 0) {
LOGI("Error opening video codec: %i", open_res);
return JNI_FALSE; // leak!
}
// Open Audio Codec.
// ======================
if (enable_audio) {
AudioBuffer_Clear();
audio_sample_rate = audio_sample_rate_param;
AVCodec *audio_codec = avcodec_find_encoder(AV_CODEC_ID_AAC);
if (!audio_codec) {
LOGI("Did not find the audio codec");
return JNI_FALSE; // leak!
} else {
LOGI("Audio codec found!");
}
AVCodecContext *audio_codec_ctx = audio_stream->codec;
audio_codec_ctx->codec_id = audio_codec->id;
audio_codec_ctx->codec_type = AVMEDIA_TYPE_AUDIO;
audio_codec_ctx->bit_rate = 128000;
audio_codec_ctx->bit_rate_tolerance = 16000;
audio_codec_ctx->channels = 1;
audio_codec_ctx->profile = FF_PROFILE_AAC_LOW;
audio_codec_ctx->sample_fmt = AV_SAMPLE_FMT_FLT;
audio_codec_ctx->sample_rate = 44100;
LOGI("Opening audio codec");
AVDictionary *opts = NULL;
av_dict_set(&opts, "strict", "experimental", 0);
open_res = avcodec_open2(audio_codec_ctx, audio_codec, &opts);
LOGI("audio frame size: %i", audio_codec_ctx->frame_size);
if (open_res < 0) {
LOGI("Error opening audio codec: %i", open_res);
return JNI_FALSE; // leak!
}
}
const jbyte *url = (*env)->GetStringUTFChars(env, rtmp_url, NULL);
// Point to an output file
if (!(ofmt->flags & AVFMT_NOFILE)) {
if (avio_open(&fmt_context->pb, url, URL_WRONLY) < 0) {
LOGI("ERROR: Could not open file %s", url);
return JNI_FALSE; // leak!
}
}
(*env)->ReleaseStringUTFChars(env, rtmp_url, url);
LOGI("Writing output header.");
// Write file header
if (avformat_write_header(fmt_context, NULL) != 0) {
LOGI("ERROR: av_write_header failed");
return JNI_FALSE;
}
pts = 0;
last_audio_pts = 0;
audio_samples_written = 0;
// Initialize buffers for UV format conversion
int frame_size = video_codec_ctx->width * video_codec_ctx->height;
u_buf = (unsigned char *) av_malloc(frame_size / 4);
v_buf = (unsigned char *) av_malloc(frame_size / 4);
LOGI("ffmpeg encoding init done");
return JNI_TRUE;
}
JNIEXPORT void JNICALL Java_com_ephronsystem_mobilizerapp_Ffmpeg_shutdown(JNIEnv
*env,
jobject thiz
) {
av_write_trailer(fmt_context);
avio_close(fmt_context
->pb);
avcodec_close(video_stream
->codec);
if (enable_audio) {
avcodec_close(audio_stream
->codec);
}
av_free(fmt_context);
av_free(u_buf);
av_free(v_buf);
fmt_context = NULL;
u_buf = NULL;
v_buf = NULL;
}
JNIEXPORT jint JNICALL Java_com_ephronsystem_mobilizerapp_Ffmpeg_encodeVideoFrame(JNIEnv
*env,
jobject thiz,
jbyteArray
yuv_image) {
int yuv_length = (*env)->GetArrayLength(env, yuv_image);
unsigned char *yuv_data = (*env)->GetByteArrayElements(env, yuv_image, 0);
AVCodecContext *video_codec_ctx = video_stream->codec;
//LOGI("Yuv size: %i w: %i h: %i", yuv_length, video_codec_ctx->width, video_codec_ctx->height);
int frame_size = video_codec_ctx->width * video_codec_ctx->height;
const unsigned char *uv = yuv_data + frame_size;
// Convert YUV from NV12 to I420. Y channel is the same so we don't touch it,
// we just have to deinterleave UV.
for (
int i = 0;
i < frame_size / 4; i++) {
v_buf[i] = uv[i * 2];
u_buf[i] = uv[i * 2 + 1];
}
AVFrame source;
memset(&source, 0, sizeof(AVFrame));
source.data[0] =
yuv_data;
source.data[1] =
u_buf;
source.data[2] =
v_buf;
source.linesize[0] = video_codec_ctx->
width;
source.linesize[1] = video_codec_ctx->width / 2;
source.linesize[2] = video_codec_ctx->width / 2;
// only for bitrate regulation. irrelevant for sync.
source.
pts = pts;
pts++;
int out_length = frame_size + (frame_size / 2);
unsigned char *out = (unsigned char *) av_malloc(out_length);
int compressed_length = avcodec_encode_video(video_codec_ctx, out, out_length, &source);
(*env)->
ReleaseByteArrayElements(env, yuv_image, yuv_data,
0);
// Write to file too
if (compressed_length > 0) {
AVPacket pkt;
av_init_packet(&pkt);
pkt.
pts = last_audio_pts;
if (video_codec_ctx->coded_frame && video_codec_ctx->coded_frame->key_frame) {
pkt.flags |= 0x0001;
}
pkt.
stream_index = video_stream->index;
pkt.
data = out;
pkt.
size = compressed_length;
if (
av_interleaved_write_frame(fmt_context,
&pkt) != 0) {
LOGI("Error writing video frame");
}
} else {
LOGI("??? compressed_length <= 0");
}
last_audio_pts++;
av_free(out);
return
compressed_length;
}
JNIEXPORT jint JNICALL Java_com_ephronsystem_mobilizerapp_Ffmpeg_encodeAudioFrame(JNIEnv
*env,
jobject thiz,
jshortArray
audio_data,
jint length
) {
if (!enable_audio) {
return 0;
}
short *audio = (*env)->GetShortArrayElements(env, audio_data, 0);
//LOGI("java audio buffer size: %i", length);
AVCodecContext *audio_codec_ctx = audio_stream->codec;
unsigned char *out = av_malloc(128000);
AudioBuffer_Push(audio, length
);
int total_compressed = 0;
while (
AudioBuffer_Size()
>= audio_codec_ctx->frame_size) {
AVPacket pkt;
av_init_packet(&pkt);
int compressed_length = avcodec_encode_audio(audio_codec_ctx, out, 128000,
AudioBuffer_Get());
total_compressed +=
compressed_length;
audio_samples_written += audio_codec_ctx->
frame_size;
int new_pts = (audio_samples_written * 1000) / audio_sample_rate;
if (compressed_length > 0) {
pkt.
size = compressed_length;
pkt.
pts = new_pts;
last_audio_pts = new_pts;
//LOGI("audio_samples_written: %i comp_length: %i pts: %i", (int)audio_samples_written, (int)compressed_length, (int)new_pts);
pkt.flags |= 0x0001;
pkt.
stream_index = audio_stream->index;
pkt.
data = out;
if (
av_interleaved_write_frame(fmt_context,
&pkt) != 0) {
LOGI("Error writing audio frame");
}
}
AudioBuffer_Pop(audio_codec_ctx
->frame_size);
}
(*env)->
ReleaseShortArrayElements(env, audio_data, audio,
0);
av_free(out);
return
total_compressed;
} -
Trimming videos using FFMPEG + Python : Invalid Argument
26 juin 2019, par user2588534I am looking to use a short Python script to automate some video cutting for me based on a .txt file I created with timecodes. I use the following code for that :
#!/usr/bin/env python3
import subprocess
first = True
with open('VideoSlicepoints_Python.txt') as f:
for line in f.readlines():
if first:
first = False
else:
filename, VideoDing_Timecode, Video_R4Start, Video_R4End, Video_R24Start, Video_R24End, Video_R0plus15 = line.strip().split(';')
cmd = ['ffmpeg', '-i', filename, '-ss', Video_R4Start, '-to', Video_R4End, '-c', 'copy', '"S:/_RobotThesis/VideoRounds/' + filename[:-4] + '_r4' + filename[-4:] + '"']
print(" ".join(cmd))
subprocess.run(cmd, stderr=subprocess.STDOUT)This returns me with the following error when it is trying to loop over to videos :
[NULL @ 0000027cddf8a100] Unable to find a suitable output format for '"S:/_RobotThesis/VideoRounds/log1_front_r4.MTS"'
"S:/_RobotThesis/VideoRounds/log1_front_r4.MTS": Invalid argumentNow, I thought it was a formatting issue, but when I input the command directly (as is visible in the CMD prompt), it works just fine :
ffmpeg -i log1_front.MTS -ss 09:37.1 -to 11:37.1 -c copy "S:/_RobotThesis/VideoRounds/log1_front_r4.MTS"For reference, this is an excerpt of the .txt file I am using (it is based on a csv file, that’s why it has headers and I excluded the header in the script) :
Filename;VideoDing_Timecode;Video_R4Start;Video_R4End;Video_R24Start;Video_R24End;Video_R0plus15
log1_front.MTS;04:44.0;09:37.1;11:37.1;28:00.3;30:00.3;19:44.0
log2_front.MTS;03:50.0;08:11.2;10:11.2;19:44.9;21:44.9;18:50.0
log3_front.MTS;04:10.1;08:32.4;10:32.4;16:49.2;18:49.2;19:10.1
log5_front.MTS;01:14.7;04:50.2;06:50.2;14:24.5;16:24.5;16:14.7Edit :
Here is the full output in the CMD, if needed :
ffmpeg -i log1_front.MTS -ss 09:37.1 -to 11:37.1 -c copy "S:/_RobotThesis/VideoRounds/log1_front_r4.MTS"
ffmpeg version N-94054-gdd357d76e5 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 8.3.1 (GCC) 20190414
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
libavutil 56. 28.100 / 56. 28.100
libavcodec 58. 53.100 / 58. 53.100
libavformat 58. 27.103 / 58. 27.103
libavdevice 58. 7.100 / 58. 7.100
libavfilter 7. 55.100 / 7. 55.100
libswscale 5. 4.101 / 5. 4.101
libswresample 3. 4.100 / 3. 4.100
libpostproc 55. 4.100 / 55. 4.100
Input #0, mpegts, from 'log1_front.MTS':
Duration: 00:37:35.05, start: 1.440000, bitrate: 12560 kb/s
Program 1
Metadata:
service_name : Service01
service_provider: FFmpeg
Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(top first), 1440x1080 [SAR 4:3 DAR 16:9], 25 fps, 50 tbr, 90k tbn, 50 tbc
Stream #0:1[0x101]: Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, stereo, fltp, 256 kb/s
[NULL @ 000002d1f347a100] Unable to find a suitable output format for '"S:/_RobotThesis/VideoRounds/log1_front_r4.MTS"'
"S:/_RobotThesis/VideoRounds/log1_front_r4.MTS": Invalid argument
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