c# - How can i compress avi file using ffmpeg? -
i have class in link im using in project:
http://jasonjano.wordpress.com/2010/02/09/a-simple-c-wrapper-for-ffmpeg/
now in form1 im using this: in timer1 tick event create avi file , it's working without problems:
private void timer1_tick(object sender, eventargs e) { if (playimages == true) { timer1.enabled = false; play(); timer1.enabled = true; } else { af.createavi(this.sc); } } then compression added new function:
public string converth264(string inputpath, string outpath) { string params1 = string.format("-i {0} -vcodec mpeg4 -acodec aac -strict -2 -ar 22050 -b:a 128k {1}", inputpath, outpath); string output = _converter.runprocess(params1); return output; } then in button3 stop timer , avi file on hard disk did:
converth264(@"d:\testdata\new.avi", @"d:\testdata\new.flv"); the result on hard disk 2 files:
new.avi , new.flv
the avi file 324mb , flv file 960kb can play avi file can't play flv file anywhere . flv file wrong.
the flv file should compressed one.
what problem ? maybe ffmpeg parameters ?
string params1 = string.format("-i {0} -vcodec mpeg4 -acodec aac -strict -2 -ar 22050 -b:a 128k {1}", inputpath, outpath); if needed: class how im using in link above:
using system; using system.collections.generic; using system.linq; using system.web; using system.io; using system.diagnostics; using system.configuration; using system.text.regularexpressions; namespace screenvideorecorder { public class converter { #region properties private string _ffexe; public string ffexe { { return _ffexe; } set { _ffexe = value; } } private string _workingpath; public string workingpath { { return _workingpath; } set { _workingpath = value; } } #endregion #region constructors public converter() { initialize(); } public converter(string ffmpegexepath) { _ffexe = ffmpegexepath; initialize(); } #endregion #region initialization private void initialize() { //first make sure have value ffexe file setting if (string.isnullorempty(_ffexe)) { _ffexe = @"d:\temp\compress\ffmpeg\ffmpeg.exe"; /* if (o == null) { throw new exception("could not find location of ffmpeg exe file. path ffmpeg.exe " + "can passed in via constructor of ffmpeg class (this class) or setting in app.config or web.config file. " + "in appsettings section, correct property name is: ffmpeg:exelocation"); } else { if (string.isnullorempty(o.tostring())) { throw new exception("no value found in app setting ffmpeg:exelocation"); } _ffexe = o.tostring(); }*/ } //now see if ffmpeg.exe exists string workingpath = getworkingfile(); if (string.isnullorempty(workingpath)) { //ffmpeg doesn't exist @ location stated. throw new exception("could not find copy of ffmpeg.exe"); } _ffexe = workingpath; //now see if have temporary place work if (string.isnullorempty(_workingpath)) { _workingpath = @"d:\temp\compress\ffmpeg\"; /* if (o != null) { _workingpath = o.tostring(); } else { _workingpath = string.empty; }*/ } } private string getworkingfile() { //try stated directory if (file.exists(_ffexe)) { return _ffexe; } //oops, didn't work, try base directory if (file.exists(path.getfilename(_ffexe))) { return path.getfilename(_ffexe); } //well, unlucky, let's return null return null; } #endregion #region file without creating file lock public static system.drawing.image loadimagefromfile(string filename) { system.drawing.image theimage = null; using (filestream filestream = new filestream(filename, filemode.open, fileaccess.read)) { byte[] img; img = new byte[filestream.length]; filestream.read(img, 0, img.length); filestream.close(); theimage = system.drawing.image.fromstream(new memorystream(img)); img = null; } gc.collect(); return theimage; } public static memorystream loadmemorystreamfromfile(string filename) { memorystream ms = null; using (filestream filestream = new filestream(filename, filemode.open, fileaccess.read)) { byte[] fil; fil = new byte[filestream.length]; filestream.read(fil, 0, fil.length); filestream.close(); ms = new memorystream(fil); } gc.collect(); return ms; } #endregion #region run process public string runprocess(string parameters) { //create process info processstartinfo oinfo = new processstartinfo(this._ffexe, parameters); oinfo.useshellexecute = false; oinfo.createnowindow = true; oinfo.redirectstandardoutput = true; oinfo.redirectstandarderror = true; //create output , streamreader output string output = null; streamreader sroutput = null; //try process try { //run process process proc = system.diagnostics.process.start(oinfo); proc.waitforexit(); //get output sroutput = proc.standarderror; //now put in string output = sroutput.readtoend(); proc.close(); } catch (exception) { output = string.empty; } { //now, if succeded, close out streamreader if (sroutput != null) { sroutput.close(); sroutput.dispose(); } } return output; } #endregion #region getvideoinfo public videofile getvideoinfo(memorystream inputfile, string filename) { string tempfile = path.combine(this.workingpath, system.guid.newguid().tostring() + path.getextension(filename)); filestream fs = file.create(tempfile); inputfile.writeto(fs); fs.flush(); fs.close(); gc.collect(); videofile vf = null; try { vf = new videofile(tempfile); } catch (exception ex) { throw ex; } getvideoinfo(vf); try { file.delete(tempfile); } catch (exception) { } return vf; } public videofile getvideoinfo(string inputpath) { videofile vf = null; try { vf = new videofile(inputpath); } catch (exception ex) { throw ex; } getvideoinfo(vf); return vf; } public void getvideoinfo(videofile input) { //set parameters video info string params = string.format("-i {0}", input.path); string output = runprocess(params); input.rawinfo = output; //get duration regex re = new regex("[d|d]uration:.((\\d|:|\\.)*)"); match m = re.match(input.rawinfo); if (m.success) { string duration = m.groups[1].value; string[] timepieces = duration.split(new char[] { ':', '.' }); if (timepieces.length == 4) { input.duration = new timespan(0, convert.toint16(timepieces[0]), convert.toint16(timepieces[1]), convert.toint16(timepieces[2]), convert.toint16(timepieces[3])); } } //get audio bit rate re = new regex("[b|b]itrate:.((\\d|:)*)"); m = re.match(input.rawinfo); double kb = 0.0; if (m.success) { double.tryparse(m.groups[1].value, out kb); } input.bitrate = kb; //get audio format re = new regex("[a|a]udio:.*"); m = re.match(input.rawinfo); if (m.success) { input.audioformat = m.value; } //get video format re = new regex("[v|v]ideo:.*"); m = re.match(input.rawinfo); if (m.success) { input.videoformat = m.value; } //get video format re = new regex("(\\d{2,3})x(\\d{2,3})"); m = re.match(input.rawinfo); if (m.success) { int width = 0; int height = 0; int.tryparse(m.groups[1].value, out width); int.tryparse(m.groups[2].value, out height); input.width = width; input.height = height; } input.infogathered = true; } #endregion #region convert flv public outputpackage converttoflv(memorystream inputfile, string filename) { string tempfile = path.combine(this.workingpath, system.guid.newguid().tostring() + path.getextension(filename)); filestream fs = file.create(tempfile); inputfile.writeto(fs); fs.flush(); fs.close(); gc.collect(); videofile vf = null; try { vf = new videofile(tempfile); } catch (exception ex) { throw ex; } outputpackage oo = converttoflv(vf); try { file.delete(tempfile); } catch (exception) { } return oo; } public outputpackage converttoflv(string inputpath) { videofile vf = null; try { vf = new videofile(inputpath); } catch (exception ex) { throw ex; } outputpackage oo = converttoflv(vf); return oo; } public outputpackage converttoflv(videofile input) { if (!input.infogathered) { getvideoinfo(input); } outputpackage ou = new outputpackage(); //set parameters getting previewimage string filename = system.guid.newguid().tostring() + ".jpg"; int secs; //divide duration in 3 preview image in middle of clip //instead of black image beginning. secs = (int)math.round(timespan.fromticks(input.duration.ticks / 3).totalseconds, 0); string finalpath = path.combine(this.workingpath, filename); string params = string.format("-i {0} {1} -vcodec mjpeg -ss {2} -vframes 1 -an -f rawvideo", input.path, finalpath, secs); string output = runprocess(params); ou.rawoutput = output; if (file.exists(finalpath)) { ou.previewimage = loadimagefromfile(finalpath); try { file.delete(finalpath); } catch (exception) { } } else { //try running again @ frame 1 params = string.format("-i {0} {1} -vcodec mjpeg -ss {2} -vframes 1 -an -f rawvideo", input.path, finalpath, 1); output = runprocess(params); ou.rawoutput = output; if (file.exists(finalpath)) { ou.previewimage = loadimagefromfile(finalpath); try { file.delete(finalpath); } catch (exception) { } } } finalpath = path.combine(this.workingpath, filename); filename = system.guid.newguid().tostring() + ".flv"; params = string.format("-i {0} -y -ar 22050 -ab 64 -f flv {1}", input.path, finalpath); output = runprocess(params); if (file.exists(finalpath)) { ou.videostream = loadmemorystreamfromfile(finalpath); try { file.delete(finalpath); } catch (exception) { } } return ou; } #endregion } public class videofile { #region properties private string _path; public string path { { return _path; } set { _path = value; } } public timespan duration { get; set; } public double bitrate { get; set; } public string audioformat { get; set; } public string videoformat { get; set; } public int height { get; set; } public int width { get; set; } public string rawinfo { get; set; } public bool infogathered { get; set; } #endregion #region constructors public videofile(string path) { _path = path; initialize(); } #endregion #region initialization private void initialize() { this.infogathered = false; //first make sure have value video file setting if (string.isnullorempty(_path)) { throw new exception("could not find location of video file"); } //now see if video file exists if (!file.exists(_path)) { throw new exception("the video file " + _path + " not exist."); } } #endregion } public class outputpackage { public memorystream videostream { get; set; } public system.drawing.image previewimage { get; set; } public string rawoutput { get; set; } public bool success { get; set; } } } this log:
4/20/2013--5:32 pm ==> 4/20/2013--6:47 pm ==> ffmpeg version n-52233-gee94362 copyright (c) 2000-2013 ffmpeg developers 4/20/2013--6:47 pm ==> built on apr 18 2013 02:55:39 gcc 4.8.0 (gcc) 4/20/2013--6:47 pm ==> configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib 4/20/2013--6:47 pm ==> libavutil 52. 26.100 / 52. 26.100 4/20/2013--6:47 pm ==> libavcodec 55. 2.100 / 55. 2.100 4/20/2013--6:47 pm ==> libavformat 55. 2.100 / 55. 2.100 4/20/2013--6:47 pm ==> libavdevice 55. 0.100 / 55. 0.100 4/20/2013--6:47 pm ==> libavfilter 3. 56.103 / 3. 56.103 4/20/2013--6:47 pm ==> libswscale 2. 2.100 / 2. 2.100 4/20/2013--6:47 pm ==> libswresample 0. 17.102 / 0. 17.102 4/20/2013--6:47 pm ==> libpostproc 52. 3.100 / 52. 3.100 4/20/2013--6:47 pm ==> input #0, avi, 'd:\testdata\new.avi': 4/20/2013--6:47 pm ==> duration: 00:00:02.12, start: 0.000000, bitrate: 1658893 kb/s 4/20/2013--6:47 pm ==> stream #0:0: video: rawvideo, bgra, 1920x1080, 25 tbr, 25 tbn, 25 tbc 4/20/2013--6:47 pm ==> codec avoption b (set bitrate (in bits/s)) specified output file #0 (d:\testdata\new.flv) has not been used stream. reason either wrong type (e.g. video option no video streams) or private option of encoder not used stream. 4/20/2013--6:47 pm ==> output #0, flv, 'd:\testdata\new.flv': 4/20/2013--6:47 pm ==> metadata: 4/20/2013--6:47 pm ==> encoder : lavf55.2.100 4/20/2013--6:47 pm ==> stream #0:0: video: mpeg4 ([9][0][0][0] / 0x0009), yuv420p, 1920x1080, q=2-31, 200 kb/s, 1k tbn, 25 tbc 4/20/2013--6:47 pm ==> stream mapping: 4/20/2013--6:47 pm ==> stream #0:0 -> #0:0 (rawvideo -> mpeg4) 4/20/2013--6:47 pm ==> press [q] stop, [?] 4/20/2013--6:47 pm ==> frame= 8 fps=0.0 q=18.4 size= 599kb time=00:00:00.32 bitrate=15326.9kbits/s 4/20/2013--6:47 pm ==> frame= 14 fps= 12 q=31.0 size= 669kb time=00:00:00.56 bitrate=9779.3kbits/s 4/20/2013--6:47 pm ==> frame= 20 fps= 12 q=31.0 size= 680kb time=00:00:00.80 bitrate=6966.3kbits/s 4/20/2013--6:47 pm ==> frame= 24 fps= 11 q=31.0 size= 688kb time=00:00:00.96 bitrate=5872.3kbits/s 4/20/2013--6:47 pm ==> frame= 31 fps= 11 q=31.0 size= 764kb time=00:00:01.24 bitrate=5044.3kbits/s 4/20/2013--6:47 pm ==> frame= 37 fps= 11 q=24.8 size= 853kb time=00:00:01.48 bitrate=4723.3kbits/s 4/20/2013--6:47 pm ==> frame= 42 fps= 11 q=31.0 size= 859kb time=00:00:01.68 bitrate=4190.6kbits/s 4/20/2013--6:47 pm ==> frame= 48 fps= 11 q=31.0 size= 885kb time=00:00:01.92 bitrate=3777.2kbits/s 4/20/2013--6:47 pm ==> frame= 53 fps= 11 q=31.0 size= 956kb time=00:00:02.12 bitrate=3695.0kbits/s 4/20/2013--6:47 pm ==> frame= 53 fps= 11 q=31.0 lsize= 956kb time=00:00:02.12 bitrate=3695.1kbits/s 4/20/2013--6:47 pm ==> 4/20/2013--6:47 pm ==> video:955kb audio:0kb subtitle:0 global headers:0kb muxing overhead 0.135293% 4/20/2013--6:47 pm ==> 4/20/2013--6:47 pm ==>
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