Examples with PointerPointer org.bytedeco.javacpp.PointerPointer used on opensource projects

Example 1 with PointerPointer

use of org.bytedeco.javacpp.PointerPointer in project bigbluebutton by bigbluebutton.

the class FFmpegFrameRecorder method startUnsafe.

void startUnsafe() throws Exception {
    int ret;
    picture = null;
    tmp_picture = null;
    picture_buf = null;
    frame = null;
    video_outbuf = null;
    audio_outbuf = null;
    oc = new AVFormatContext(null);
    video_c = null;
    audio_c = null;
    video_st = null;
    audio_st = null;
    got_video_packet = new int[1];
    got_audio_packet = new int[1];
    /* auto detect the output format from the name. */
    String format_name = format == null || format.length() == 0 ? null : format;
    if ((oformat = av_guess_format(format_name, filename, null)) == null) {
        int proto = filename.indexOf("://");
        if (proto > 0) {
            format_name = filename.substring(0, proto);
        }
        if ((oformat = av_guess_format(format_name, filename, null)) == null) {
            throw new Exception("av_guess_format() error: Could not guess output format for \"" + filename + "\" and " + format + " format.");
        }
    }
    format_name = oformat.name().getString();
    /* allocate the output media context */
    if (avformat_alloc_output_context2(oc, null, format_name, filename) < 0) {
        throw new Exception("avformat_alloc_context2() error:\tCould not allocate format context");
    }
    oc.oformat(oformat);
    oc.filename().putString(filename);
    /* add the audio and video streams using the format codecs
           and initialize the codecs */
    AVStream inpVideoStream = null, inpAudioStream = null;
    if (ifmt_ctx != null) {
        // get input video and audio stream indices from ifmt_ctx
        for (int idx = 0; idx < ifmt_ctx.nb_streams(); idx++) {
            AVStream inputStream = ifmt_ctx.streams(idx);
            if (inputStream.codec().codec_type() == AVMEDIA_TYPE_VIDEO) {
                inpVideoStream = inputStream;
                videoCodec = inpVideoStream.codec().codec_id();
                if (inpVideoStream.r_frame_rate().num() != AV_NOPTS_VALUE && inpVideoStream.r_frame_rate().den() != 0) {
                    frameRate = (inpVideoStream.r_frame_rate().num()) / (inpVideoStream.r_frame_rate().den());
                }
            } else if (inputStream.codec().codec_type() == AVMEDIA_TYPE_AUDIO) {
                inpAudioStream = inputStream;
                audioCodec = inpAudioStream.codec().codec_id();
            }
        }
    }
    if (imageWidth > 0 && imageHeight > 0) {
        if (videoCodec != AV_CODEC_ID_NONE) {
            oformat.video_codec(videoCodec);
        } else if ("flv".equals(format_name)) {
            oformat.video_codec(AV_CODEC_ID_FLV1);
        } else if ("mp4".equals(format_name)) {
            oformat.video_codec(AV_CODEC_ID_MPEG4);
        } else if ("3gp".equals(format_name)) {
            oformat.video_codec(AV_CODEC_ID_H263);
        } else if ("avi".equals(format_name)) {
            oformat.video_codec(AV_CODEC_ID_HUFFYUV);
        }
        /* find the video encoder */
        if ((video_codec = avcodec_find_encoder_by_name(videoCodecName)) == null && (video_codec = avcodec_find_encoder(oformat.video_codec())) == null) {
            release();
            throw new Exception("avcodec_find_encoder() error: Video codec not found.");
        }
        oformat.video_codec(video_codec.id());
        AVRational frame_rate = av_d2q(frameRate, 1001000);
        AVRational supported_framerates = video_codec.supported_framerates();
        if (supported_framerates != null) {
            int idx = av_find_nearest_q_idx(frame_rate, supported_framerates);
            frame_rate = supported_framerates.position(idx);
        }
        /* add a video output stream */
        if ((video_st = avformat_new_stream(oc, video_codec)) == null) {
            release();
            throw new Exception("avformat_new_stream() error: Could not allocate video stream.");
        }
        video_c = video_st.codec();
        if (inpVideoStream != null) {
            if ((ret = avcodec_copy_context(video_st.codec(), inpVideoStream.codec())) < 0) {
                release();
                throw new Exception("avcodec_copy_context() error:\tFailed to copy context from input to output stream codec context");
            }
            videoBitrate = (int) inpVideoStream.codec().bit_rate();
            pixelFormat = inpVideoStream.codec().pix_fmt();
            aspectRatio = inpVideoStream.codec().sample_aspect_ratio().den() / inpVideoStream.codec().sample_aspect_ratio().den() * 1.d;
            videoQuality = inpVideoStream.codec().global_quality();
            video_c.codec_tag(0);
        }
        video_c.codec_id(oformat.video_codec());
        video_c.codec_type(AVMEDIA_TYPE_VIDEO);
        /* put sample parameters */
        video_c.bit_rate(videoBitrate);
        /* resolution must be a multiple of two, but round up to 16 as often required */
        video_c.width((imageWidth + 15) / 16 * 16);
        video_c.height(imageHeight);
        if (aspectRatio > 0) {
            AVRational r = av_d2q(aspectRatio, 255);
            video_c.sample_aspect_ratio(r);
            video_st.sample_aspect_ratio(r);
        }
        /* time base: this is the fundamental unit of time (in seconds) in terms
               of which frame timestamps are represented. for fixed-fps content,
               timebase should be 1/framerate and timestamp increments should be
               identically 1. */
        video_c.time_base(av_inv_q(frame_rate));
        video_st.time_base(av_inv_q(frame_rate));
        if (gopSize >= 0) {
            video_c.gop_size(gopSize);
        /* emit one intra frame every gopSize frames at most */
        }
        if (videoQuality >= 0) {
            video_c.flags(video_c.flags() | CODEC_FLAG_QSCALE);
            video_c.global_quality((int) Math.round(FF_QP2LAMBDA * videoQuality));
        }
        if (pixelFormat != AV_PIX_FMT_NONE) {
            video_c.pix_fmt(pixelFormat);
        } else if (video_c.codec_id() == AV_CODEC_ID_RAWVIDEO || video_c.codec_id() == AV_CODEC_ID_PNG || video_c.codec_id() == AV_CODEC_ID_HUFFYUV || video_c.codec_id() == AV_CODEC_ID_FFV1) {
            // appropriate for common lossless formats
            video_c.pix_fmt(AV_PIX_FMT_RGB32);
        } else {
            // lossy, but works with about everything
            video_c.pix_fmt(AV_PIX_FMT_YUV420P);
        }
        if (video_c.codec_id() == AV_CODEC_ID_MPEG2VIDEO) {
            /* just for testing, we also add B frames */
            video_c.max_b_frames(2);
        } else if (video_c.codec_id() == AV_CODEC_ID_MPEG1VIDEO) {
            /* Needed to avoid using macroblocks in which some coeffs overflow.
                   This does not happen with normal video, it just happens here as
                   the motion of the chroma plane does not match the luma plane. */
            video_c.mb_decision(2);
        } else if (video_c.codec_id() == AV_CODEC_ID_H263) {
            // H.263 does not support any other resolution than the following
            if (imageWidth <= 128 && imageHeight <= 96) {
                video_c.width(128).height(96);
            } else if (imageWidth <= 176 && imageHeight <= 144) {
                video_c.width(176).height(144);
            } else if (imageWidth <= 352 && imageHeight <= 288) {
                video_c.width(352).height(288);
            } else if (imageWidth <= 704 && imageHeight <= 576) {
                video_c.width(704).height(576);
            } else {
                video_c.width(1408).height(1152);
            }
        } else if (video_c.codec_id() == AV_CODEC_ID_H264) {
            // default to constrained baseline to produce content that plays back on anything,
            // without any significant tradeoffs for most use cases
            video_c.profile(AVCodecContext.FF_PROFILE_H264_CONSTRAINED_BASELINE);
        }
        // some formats want stream headers to be separate
        if ((oformat.flags() & AVFMT_GLOBALHEADER) != 0) {
            video_c.flags(video_c.flags() | CODEC_FLAG_GLOBAL_HEADER);
        }
        if ((video_codec.capabilities() & CODEC_CAP_EXPERIMENTAL) != 0) {
            video_c.strict_std_compliance(AVCodecContext.FF_COMPLIANCE_EXPERIMENTAL);
        }
    }
    /*
         * add an audio output stream
         */
    if (audioChannels > 0 && audioBitrate > 0 && sampleRate > 0) {
        if (audioCodec != AV_CODEC_ID_NONE) {
            oformat.audio_codec(audioCodec);
        } else if ("flv".equals(format_name) || "mp4".equals(format_name) || "3gp".equals(format_name)) {
            oformat.audio_codec(AV_CODEC_ID_AAC);
        } else if ("avi".equals(format_name)) {
            oformat.audio_codec(AV_CODEC_ID_PCM_S16LE);
        }
        /* find the audio encoder */
        if ((audio_codec = avcodec_find_encoder_by_name(audioCodecName)) == null && (audio_codec = avcodec_find_encoder(oformat.audio_codec())) == null) {
            release();
            throw new Exception("avcodec_find_encoder() error: Audio codec not found.");
        }
        oformat.audio_codec(audio_codec.id());
        if ((audio_st = avformat_new_stream(oc, audio_codec)) == null) {
            release();
            throw new Exception("avformat_new_stream() error: Could not allocate audio stream.");
        }
        audio_c = audio_st.codec();
        if (inpAudioStream != null && audioChannels > 0) {
            if ((ret = avcodec_copy_context(audio_st.codec(), inpAudioStream.codec())) < 0) {
                throw new Exception("avcodec_copy_context() error:\tFailed to copy context from input audio to output audio stream codec context\n");
            }
            audioBitrate = (int) inpAudioStream.codec().bit_rate();
            sampleRate = inpAudioStream.codec().sample_rate();
            audioChannels = inpAudioStream.codec().channels();
            sampleFormat = inpAudioStream.codec().sample_fmt();
            audioQuality = inpAudioStream.codec().global_quality();
            audio_c.codec_tag(0);
            audio_st.pts(inpAudioStream.pts());
            audio_st.duration(inpAudioStream.duration());
            audio_st.time_base().num(inpAudioStream.time_base().num());
            audio_st.time_base().den(inpAudioStream.time_base().den());
        }
        audio_c.codec_id(oformat.audio_codec());
        audio_c.codec_type(AVMEDIA_TYPE_AUDIO);
        /* put sample parameters */
        audio_c.bit_rate(audioBitrate);
        audio_c.sample_rate(sampleRate);
        audio_c.channels(audioChannels);
        audio_c.channel_layout(av_get_default_channel_layout(audioChannels));
        if (sampleFormat != AV_SAMPLE_FMT_NONE) {
            audio_c.sample_fmt(sampleFormat);
        } else {
            // use AV_SAMPLE_FMT_S16 by default, if available
            audio_c.sample_fmt(AV_SAMPLE_FMT_FLTP);
            IntPointer formats = audio_c.codec().sample_fmts();
            for (int i = 0; formats.get(i) != -1; i++) {
                if (formats.get(i) == AV_SAMPLE_FMT_S16) {
                    audio_c.sample_fmt(AV_SAMPLE_FMT_S16);
                    break;
                }
            }
        }
        audio_c.time_base().num(1).den(sampleRate);
        audio_st.time_base().num(1).den(sampleRate);
        switch(audio_c.sample_fmt()) {
            case AV_SAMPLE_FMT_U8:
            case AV_SAMPLE_FMT_U8P:
                audio_c.bits_per_raw_sample(8);
                break;
            case AV_SAMPLE_FMT_S16:
            case AV_SAMPLE_FMT_S16P:
                audio_c.bits_per_raw_sample(16);
                break;
            case AV_SAMPLE_FMT_S32:
            case AV_SAMPLE_FMT_S32P:
                audio_c.bits_per_raw_sample(32);
                break;
            case AV_SAMPLE_FMT_FLT:
            case AV_SAMPLE_FMT_FLTP:
                audio_c.bits_per_raw_sample(32);
                break;
            case AV_SAMPLE_FMT_DBL:
            case AV_SAMPLE_FMT_DBLP:
                audio_c.bits_per_raw_sample(64);
                break;
            default:
                assert false;
        }
        if (audioQuality >= 0) {
            audio_c.flags(audio_c.flags() | CODEC_FLAG_QSCALE);
            audio_c.global_quality((int) Math.round(FF_QP2LAMBDA * audioQuality));
        }
        // some formats want stream headers to be separate
        if ((oformat.flags() & AVFMT_GLOBALHEADER) != 0) {
            audio_c.flags(audio_c.flags() | CODEC_FLAG_GLOBAL_HEADER);
        }
        if ((audio_codec.capabilities() & CODEC_CAP_EXPERIMENTAL) != 0) {
            audio_c.strict_std_compliance(AVCodecContext.FF_COMPLIANCE_EXPERIMENTAL);
        }
    }
    av_dump_format(oc, 0, filename, 1);
    /* now that all the parameters are set, we can open the audio and
           video codecs and allocate the necessary encode buffers */
    if (video_st != null && inpVideoStream == null) {
        AVDictionary options = new AVDictionary(null);
        if (videoQuality >= 0) {
            av_dict_set(options, "crf", "" + videoQuality, 0);
        }
        for (Entry<String, String> e : videoOptions.entrySet()) {
            av_dict_set(options, e.getKey(), e.getValue(), 0);
        }
        /* open the codec */
        if ((ret = avcodec_open2(video_c, video_codec, options)) < 0) {
            release();
            throw new Exception("avcodec_open2() error " + ret + ": Could not open video codec.");
        }
        av_dict_free(options);
        video_outbuf = null;
        if ((oformat.flags() & AVFMT_RAWPICTURE) == 0) {
            /* allocate output buffer */
            /* XXX: API change will be done */
            /* buffers passed into lav* can be allocated any way you prefer,
                   as long as they're aligned enough for the architecture, and
                   they're freed appropriately (such as using av_free for buffers
                   allocated with av_malloc) */
            // a la ffmpeg.c
            video_outbuf_size = Math.max(256 * 1024, 8 * video_c.width() * video_c.height());
            video_outbuf = new BytePointer(av_malloc(video_outbuf_size));
        }
        /* allocate the encoded raw picture */
        if ((picture = av_frame_alloc()) == null) {
            release();
            throw new Exception("av_frame_alloc() error: Could not allocate picture.");
        }
        // magic required by libx264
        picture.pts(0);
        int size = avpicture_get_size(video_c.pix_fmt(), video_c.width(), video_c.height());
        if ((picture_buf = new BytePointer(av_malloc(size))).isNull()) {
            release();
            throw new Exception("av_malloc() error: Could not allocate picture buffer.");
        }
        /* if the output format is not equal to the image format, then a temporary
               picture is needed too. It is then converted to the required output format */
        if ((tmp_picture = av_frame_alloc()) == null) {
            release();
            throw new Exception("av_frame_alloc() error: Could not allocate temporary picture.");
        }
        AVDictionary metadata = new AVDictionary(null);
        for (Entry<String, String> e : videoMetadata.entrySet()) {
            av_dict_set(metadata, e.getKey(), e.getValue(), 0);
        }
        video_st.metadata(metadata);
    }
    if (audio_st != null && inpAudioStream == null) {
        AVDictionary options = new AVDictionary(null);
        if (audioQuality >= 0) {
            av_dict_set(options, "crf", "" + audioQuality, 0);
        }
        for (Entry<String, String> e : audioOptions.entrySet()) {
            av_dict_set(options, e.getKey(), e.getValue(), 0);
        }
        /* open the codec */
        if ((ret = avcodec_open2(audio_c, audio_codec, options)) < 0) {
            release();
            throw new Exception("avcodec_open2() error " + ret + ": Could not open audio codec.");
        }
        av_dict_free(options);
        audio_outbuf_size = 256 * 1024;
        audio_outbuf = new BytePointer(av_malloc(audio_outbuf_size));
        /* ugly hack for PCM codecs (will be removed ASAP with new PCM
               support to compute the input frame size in samples */
        if (audio_c.frame_size() <= 1) {
            audio_outbuf_size = FF_MIN_BUFFER_SIZE;
            audio_input_frame_size = audio_outbuf_size / audio_c.channels();
            switch(audio_c.codec_id()) {
                case AV_CODEC_ID_PCM_S16LE:
                case AV_CODEC_ID_PCM_S16BE:
                case AV_CODEC_ID_PCM_U16LE:
                case AV_CODEC_ID_PCM_U16BE:
                    audio_input_frame_size >>= 1;
                    break;
                default:
                    break;
            }
        } else {
            audio_input_frame_size = audio_c.frame_size();
        }
        //int bufferSize = audio_input_frame_size * audio_c.bits_per_raw_sample()/8 * audio_c.channels();
        int planes = av_sample_fmt_is_planar(audio_c.sample_fmt()) != 0 ? (int) audio_c.channels() : 1;
        int data_size = av_samples_get_buffer_size((IntPointer) null, audio_c.channels(), audio_input_frame_size, audio_c.sample_fmt(), 1) / planes;
        samples_out = new BytePointer[planes];
        for (int i = 0; i < samples_out.length; i++) {
            samples_out[i] = new BytePointer(av_malloc(data_size)).capacity(data_size);
        }
        samples_in = new Pointer[AVFrame.AV_NUM_DATA_POINTERS];
        samples_in_ptr = new PointerPointer(AVFrame.AV_NUM_DATA_POINTERS);
        samples_out_ptr = new PointerPointer(AVFrame.AV_NUM_DATA_POINTERS);
        /* allocate the audio frame */
        if ((frame = av_frame_alloc()) == null) {
            release();
            throw new Exception("av_frame_alloc() error: Could not allocate audio frame.");
        }
        // magic required by libvorbis and webm
        frame.pts(0);
        AVDictionary metadata = new AVDictionary(null);
        for (Entry<String, String> e : audioMetadata.entrySet()) {
            av_dict_set(metadata, e.getKey(), e.getValue(), 0);
        }
        audio_st.metadata(metadata);
    }
    /* open the output file, if needed */
    if ((oformat.flags() & AVFMT_NOFILE) == 0) {
        AVIOContext pb = new AVIOContext(null);
        if ((ret = avio_open(pb, filename, AVIO_FLAG_WRITE)) < 0) {
            release();
            throw new Exception("avio_open error() error " + ret + ": Could not open '" + filename + "'");
        }
        oc.pb(pb);
    }
    AVDictionary options = new AVDictionary(null);
    for (Entry<String, String> e : this.options.entrySet()) {
        av_dict_set(options, e.getKey(), e.getValue(), 0);
    }
    AVDictionary metadata = new AVDictionary(null);
    for (Entry<String, String> e : this.metadata.entrySet()) {
        av_dict_set(metadata, e.getKey(), e.getValue(), 0);
    }
    /* write the stream header, if any */
    avformat_write_header(oc.metadata(metadata), options);
    av_dict_free(options);
}

Example 2 with PointerPointer

use of org.bytedeco.javacpp.PointerPointer in project bigbluebutton by bigbluebutton.

the class FFmpegFrameGrabber method processImage.

private void processImage() throws Exception {
    frame.imageWidth = imageWidth > 0 ? imageWidth : video_c.width();
    frame.imageHeight = imageHeight > 0 ? imageHeight : video_c.height();
    frame.imageDepth = Frame.DEPTH_UBYTE;
    switch(imageMode) {
        case COLOR:
        case GRAY:
            // Deinterlace Picture
            if (deinterlace) {
                throw new Exception("Cannot deinterlace: Functionality moved to FFmpegFrameFilter.");
            }
            // Convert the image into BGR or GRAY format that OpenCV uses
            img_convert_ctx = sws_getCachedContext(img_convert_ctx, video_c.width(), video_c.height(), video_c.pix_fmt(), frame.imageWidth, frame.imageHeight, getPixelFormat(), SWS_BILINEAR, null, null, (DoublePointer) null);
            if (img_convert_ctx == null) {
                throw new Exception("sws_getCachedContext() error: Cannot initialize the conversion context.");
            }
            // Convert the image from its native format to RGB or GRAY
            sws_scale(img_convert_ctx, new PointerPointer(picture), picture.linesize(), 0, video_c.height(), new PointerPointer(picture_rgb), picture_rgb.linesize());
            frame.imageStride = picture_rgb.linesize(0);
            frame.image = image_buf;
            break;
        case RAW:
            frame.imageStride = picture.linesize(0);
            BytePointer ptr = picture.data(0);
            if (ptr != null && !ptr.equals(image_ptr[0])) {
                image_ptr[0] = ptr.capacity(frame.imageHeight * frame.imageStride);
                image_buf[0] = ptr.asBuffer();
            }
            frame.image = image_buf;
            break;
        default:
            assert false;
    }
    frame.image[0].limit(frame.imageHeight * frame.imageStride);
    frame.imageChannels = frame.imageStride / frame.imageWidth;
}

Example 3 with PointerPointer

use of org.bytedeco.javacpp.PointerPointer in project bigbluebutton by bigbluebutton.

the class FFmpegFrameRecorder method recordImage.

public boolean recordImage(int width, int height, int depth, int channels, int stride, int pixelFormat, long frameTimestamp, Buffer... image) throws Exception {
    if (video_st == null) {
        throw new Exception("No video output stream (Is imageWidth > 0 && imageHeight > 0 and has start() been called?)");
    }
    int ret;
    if (image == null || image.length == 0) {
    /* no more frame to compress. The codec has a latency of a few
               frames if using B frames, so we get the last frames by
               passing the same picture again */
    } else {
        int step = stride * Math.abs(depth) / 8;
        BytePointer data = image[0] instanceof ByteBuffer ? new BytePointer((ByteBuffer) image[0].position(0)) : new BytePointer(new Pointer(image[0].position(0)));
        if (pixelFormat == AV_PIX_FMT_NONE) {
            if ((depth == Frame.DEPTH_UBYTE || depth == Frame.DEPTH_BYTE) && channels == 3) {
                pixelFormat = AV_PIX_FMT_BGR24;
            } else if ((depth == Frame.DEPTH_UBYTE || depth == Frame.DEPTH_BYTE) && channels == 1) {
                pixelFormat = AV_PIX_FMT_GRAY8;
            } else if ((depth == Frame.DEPTH_USHORT || depth == Frame.DEPTH_SHORT) && channels == 1) {
                pixelFormat = ByteOrder.nativeOrder().equals(ByteOrder.BIG_ENDIAN) ? AV_PIX_FMT_GRAY16BE : AV_PIX_FMT_GRAY16LE;
            } else if ((depth == Frame.DEPTH_UBYTE || depth == Frame.DEPTH_BYTE) && channels == 4) {
                pixelFormat = AV_PIX_FMT_RGBA;
            } else if ((depth == Frame.DEPTH_UBYTE || depth == Frame.DEPTH_BYTE) && channels == 2) {
                // Android's camera capture format
                pixelFormat = AV_PIX_FMT_NV21;
                step = width;
            } else {
                throw new Exception("Could not guess pixel format of image: depth=" + depth + ", channels=" + channels);
            }
        }
        if (video_c.pix_fmt() != pixelFormat || video_c.width() != width || video_c.height() != height) {
            /* convert to the codec pixel format if needed */
            img_convert_ctx = sws_getCachedContext(img_convert_ctx, width, height, pixelFormat, video_c.width(), video_c.height(), video_c.pix_fmt(), SWS_BILINEAR, null, null, (DoublePointer) null);
            if (img_convert_ctx == null) {
                throw new Exception("sws_getCachedContext() error: Cannot initialize the conversion context.");
            }
            avpicture_fill(new AVPicture(tmp_picture), data, pixelFormat, width, height);
            avpicture_fill(new AVPicture(picture), picture_buf, video_c.pix_fmt(), video_c.width(), video_c.height());
            tmp_picture.linesize(0, step);
            tmp_picture.format(pixelFormat);
            tmp_picture.width(width);
            tmp_picture.height(height);
            picture.format(video_c.pix_fmt());
            picture.width(video_c.width());
            picture.height(video_c.height());
            sws_scale(img_convert_ctx, new PointerPointer(tmp_picture), tmp_picture.linesize(), 0, height, new PointerPointer(picture), picture.linesize());
        } else {
            avpicture_fill(new AVPicture(picture), data, pixelFormat, width, height);
            picture.linesize(0, step);
            picture.format(pixelFormat);
            picture.width(width);
            picture.height(height);
        }
    }
    if ((oformat.flags() & AVFMT_RAWPICTURE) != 0) {
        if (image == null || image.length == 0) {
            return false;
        }
        /* raw video case. The API may change slightly in the future for that? */
        av_init_packet(video_pkt);
        video_pkt.flags(video_pkt.flags() | AV_PKT_FLAG_KEY);
        video_pkt.stream_index(video_st.index());
        video_pkt.data(new BytePointer(picture));
        video_pkt.size(Loader.sizeof(AVPicture.class));
    } else {
        /* encode the image */
        av_init_packet(video_pkt);
        video_pkt.data(video_outbuf);
        video_pkt.size(video_outbuf_size);
        picture.quality(video_c.global_quality());
        if ((ret = avcodec_encode_video2(video_c, video_pkt, image == null || image.length == 0 ? null : picture, got_video_packet)) < 0) {
            throw new Exception("avcodec_encode_video2() error " + ret + ": Could not encode video packet.");
        }
        // magic required by libx264
        picture.pts(picture.pts() + 1);
        /* if zero size, it means the image was buffered */
        if (got_video_packet[0] != 0) {
            if (video_pkt.pts() != AV_NOPTS_VALUE) {
                // Override timestamp from system screen grabber. Otherwise, we will have skewed recorded file.
                // FfmpegFrameRecorder needs to propagate this timestamp into the avpacket sent to the server.
                // ralam - Sept. 14, 2016
                video_pkt.pts(frameTimestamp);
            //video_pkt.pts(av_rescale_q(video_pkt.pts(), video_c.time_base(), video_st.time_base()));
            }
            if (video_pkt.dts() != AV_NOPTS_VALUE) {
                video_pkt.dts(frameTimestamp);
            //video_pkt.dts(av_rescale_q(video_pkt.dts(), video_c.time_base(), video_st.time_base()));
            }
            video_pkt.stream_index(video_st.index());
        } else {
            return false;
        }
    }
    writePacket(AVMEDIA_TYPE_VIDEO, video_pkt);
    return image != null ? (video_pkt.flags() & AV_PKT_FLAG_KEY) != 0 : got_video_packet[0] != 0;
}