mirror of
https://github.com/ShareX/ShareX.git
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154 lines
No EOL
6.4 KiB
C#
154 lines
No EOL
6.4 KiB
C#
#region License Information (GPL v3)
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/*
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ShareX - A program that allows you to take screenshots and share any file type
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Copyright (C) 2007-2014 ShareX Developers
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Optionally you can also view the license at <http://www.gnu.org/licenses/>.
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*/
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#endregion License Information (GPL v3)
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using HelpersLib;
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.IO;
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using System.Linq;
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using System.Text;
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namespace ScreenCaptureLib
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{
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public class ScreencastOptions
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{
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public string OutputPath;
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public int GIFFPS;
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public int ScreenRecordFPS;
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public Rectangle CaptureArea;
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public float Duration;
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public bool DrawCursor;
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public IntPtr ParentWindow;
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public bool ShowAVIOptionsDialog;
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public AVIOptions AVI = new AVIOptions();
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public FFmpegOptions FFmpeg = new FFmpegOptions();
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public string GetFFmpegArgs()
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{
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StringBuilder args = new StringBuilder();
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// input FPS
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args.AppendFormat("-r {0} ", ScreenRecordFPS);
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if (string.IsNullOrEmpty(FFmpeg.VideoSource) || FFmpeg.VideoSource.Equals("GDI grab", StringComparison.InvariantCultureIgnoreCase))
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{
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// http://ffmpeg.org/ffmpeg-devices.html#gdigrab
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args.AppendFormat("-f gdigrab -framerate {0} -offset_x {1} -offset_y {2} -video_size {3}x{4} -draw_mouse {5} -show_region {6} -i desktop ",
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ScreenRecordFPS, CaptureArea.X, CaptureArea.Y, CaptureArea.Width, CaptureArea.Height, DrawCursor ? 1 : 0, 0);
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if (FFmpeg.IsAudioSourceSelected())
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{
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args.AppendFormat("-f dshow -i audio=\"{0}\" ", FFmpeg.AudioSource);
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}
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}
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else
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{
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// https://github.com/rdp/screen-capture-recorder-to-video-windows-free configuration section
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string dshowRegistryPath = "Software\\screen-capture-recorder";
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RegistryHelpers.CreateRegistry(dshowRegistryPath, "start_x", CaptureArea.X);
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RegistryHelpers.CreateRegistry(dshowRegistryPath, "start_y", CaptureArea.Y);
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RegistryHelpers.CreateRegistry(dshowRegistryPath, "capture_width", CaptureArea.Width);
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RegistryHelpers.CreateRegistry(dshowRegistryPath, "capture_height", CaptureArea.Height);
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RegistryHelpers.CreateRegistry(dshowRegistryPath, "default_max_fps", ScreenRecordFPS);
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RegistryHelpers.CreateRegistry(dshowRegistryPath, "capture_mouse_default_1", DrawCursor ? 1 : 0);
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args.Append("-f dshow -i ");
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// dshow audio/video device: https://github.com/rdp/screen-capture-recorder-to-video-windows-free
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args.AppendFormat("video=\"{0}\"", FFmpeg.VideoSource);
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if (FFmpeg.IsAudioSourceSelected())
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{
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args.AppendFormat(":audio=\"{0}\" ", FFmpeg.AudioSource);
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}
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else
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{
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args.Append(" ");
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}
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}
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if (!string.IsNullOrEmpty(FFmpeg.UserArgs))
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{
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args.Append(FFmpeg.UserArgs + " ");
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}
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args.AppendFormat("-c:v {0} ", FFmpeg.VideoCodec.ToString());
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// output FPS
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args.AppendFormat("-r {0} ", ScreenRecordFPS);
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switch (FFmpeg.VideoCodec)
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{
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case FFmpegVideoCodec.libx264: // https://trac.ffmpeg.org/wiki/x264EncodingGuide
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args.AppendFormat("-crf {0} ", FFmpeg.x264_CRF);
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args.AppendFormat("-preset {0} ", FFmpeg.Preset.ToString());
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break;
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case FFmpegVideoCodec.libvpx: // https://trac.ffmpeg.org/wiki/vpxEncodingGuide
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args.AppendFormat("-crf {0} ", FFmpeg.VPx_CRF);
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break;
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case FFmpegVideoCodec.libxvid: // https://trac.ffmpeg.org/wiki/How%20to%20encode%20Xvid%20/%20DivX%20video%20with%20ffmpeg
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args.AppendFormat("-qscale:v {0} ", FFmpeg.XviD_qscale);
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break;
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}
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// -pix_fmt yuv420p required for libx264 otherwise can't stream in Chrome
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if (FFmpeg.VideoCodec == FFmpegVideoCodec.libx264)
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{
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args.Append("-pix_fmt yuv420p -tune zerolatency ");
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}
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if (FFmpeg.IsAudioSourceSelected())
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{
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switch (FFmpeg.AudioCodec)
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{
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case FFmpegAudioCodec.libvorbis: // http://trac.ffmpeg.org/wiki/TheoraVorbisEncodingGuide
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args.AppendFormat("-c:a {0} -qscale:a {1} ", FFmpegAudioCodec.libvorbis.ToString(), FFmpeg.Vorbis_qscale);
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break;
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case FFmpegAudioCodec.libmp3lame: // http://trac.ffmpeg.org/wiki/Encoding%20VBR%20(Variable%20Bit%20Rate)%20mp3%20audio
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args.AppendFormat("-c:a {0} -qscale:a {1} ", FFmpegAudioCodec.libmp3lame.ToString(), FFmpeg.MP3_qscale);
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break;
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case FFmpegAudioCodec.libvoaacenc: // http://trac.ffmpeg.org/wiki/AACEncodingGuide
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args.AppendFormat("-c:a libvo_aacenc -ac 2 -b:a {0}k ", FFmpeg.AAC_bitrate); // -ac 2 required otherwise failing with 7.1
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break;
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}
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}
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if (Duration > 0)
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{
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args.AppendFormat("-t {0} ", Duration);
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}
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// -y for overwrite file
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args.Append("-y ");
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args.AppendFormat("\"{0}\"", Path.ChangeExtension(OutputPath, FFmpeg.Extension));
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return args.ToString();
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}
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}
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} |