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• Putting quotes round a string in C# [duplicate]

  9 décembre 2014, par ADAMPOKE111

  This question already has an answer here :

  • Escape double quotes in string
    
    5 answers
    

  I need help putting two quotes round to strings in this line of code.

  System.Diagnostics.Process.Start("CMD.exe", "\"/C ffmpeg -loop 1 -i input.png -i " + value + " -acodec libvo_aacenc -vcodec h264 -shortest " + value + ".mp4\"");

  I am trying to pass two custom arguments to ffmpeg in CMD.exe, how ever if the file has spaces it fails and does nothing.

  The way to fix this is to put two quotes around it like " + value + ", but that brings up a bunch of errors.
  I’ve tried things like "\"" + value + "\"" but it just brings up a ton of errors.

• vf_frei0r : do not increment string if it reached the end

  5 décembre 2014, par Vittorio Giovara

  vf_frei0r : do not increment string if it reached the end
  Bug-Id : 778
  
  CC : libav-stable@libav.org
  

  • [DBH] libavfilter/vf_frei0r.c

• Getting issue in command prompt while executing FFmpeg command because of exceeded string limit.(Windows)

  22 juin 2021, par John Smith

  This is the command that I want to execute but it exceeds the string limit of command in COMMAND PROMPT of WINDOWS. Please help me by correcting my ffmpeg command or suggesting me some solution so that I can compress my ffmpeg command that does not exceed the command string limit.
I am setting an overlay of images on video, that is 25 frames/second. Every image overlay changes every 40ms and user see a text animation on video.
I have tried other options such as making a gif from sequence of images but when the gif is created then a background colour is added (even though the images that I used have no background) which is seen on video when I use it as overlay on video. Apart from this, I tried to make video from images but the output video has low quality graphics. Both the conversions I did in FFmpeg.

  


  Problem aroused when the string limit reached in command prompt before that I was able to execute command that adds images overlays after every 40 ms. Please suggest me some way.

  


  Images shows that command string limit reached in command prompt of Windows so the command is incomplete

  


  

  


  C:/ffmpeg/bin/ffmpeg -i images/cut.mp4 -i images/img0.png -i images/img1.png -i images/img2.png -i images/img3.png -i images/img4.png -i images/img5.png -i images/img6.png -i images/img7.png -i images/img8.png -i images/img9.png -i images/img10.png -i images/img11.png -i images/img12.png -i images/img13.png -i images/img14.png -i images/img15.png -i images/img16.png -i images/img17.png -i images/img18.png -i images/img19.png -i images/img20.png -i images/img21.png -i images/img22.png -i images/img23.png -i images/img24.png -i images/img25.png -i images/img26.png -i images/img27.png -i images/img28.png -i images/img29.png -i images/img30.png -i images/img31.png -i images/img32.png -i images/img33.png -i images/img34.png -i images/img35.png -i images/img36.png -i images/img37.png -i images/img38.png -i images/img39.png -i images/img40.png -i images/img41.png -i images/img42.png -i images/img43.png -i images/img44.png -i images/img45.png -i images/img46.png -i images/img47.png -i images/img48.png -i images/img49.png -i images/img50.png -i images/img51.png -i images/img52.png -i images/img53.png -i images/img54.png -i images/img55.png -i images/img56.png -i images/img57.png -i images/img58.png -i images/img59.png -i images/img60.png -i images/img61.png -i images/img62.png -i images/img63.png -i images/img64.png -i images/img65.png -i images/img66.png -i images/img67.png -i images/img68.png -i images/img69.png -i images/img70.png -i images/img71.png -i images/img72.png -i images/img73.png -i images/img74.png -i images/img75.png -i images/img76.png -i images/img77.png -i images/img78.png -i images/img79.png -i images/img80.png -i images/img81.png -i images/img82.png -i images/img83.png -i images/img84.png -i images/img85.png -i images/img86.png -i images/img87.png -i images/img88.png -i images/img89.png -i images/img90.png -i images/img91.png -i images/img92.png -i images/img93.png -i images/img94.png -i images/img95.png -i images/img96.png -i images/img97.png -i images/img98.png -i images/img99.png -i images/img100.png -i images/img101.png -i images/img102.png -i images/img103.png -i images/img104.png -i images/img105.png -i images/img106.png -i images/img107.png -i images/img108.png -i images/img109.png -i images/img110.png -i images/img111.png -i images/img112.png -i images/img113.png -i images/img114.png -i images/img115.png -i images/img116.png -i images/img117.png -i images/img118.png -i images/img119.png -i images/img120.png -i images/img121.png -i images/img122.png -i images/img123.png -i images/img124.png -i images/img125.png -i images/img126.png -i images/img127.png -i images/img128.png -i images/img129.png -i images/img130.png -i images/img131.png -i images/img132.png -i images/img133.png -i images/img134.png -i images/img135.png -i images/img136.png -i images/img137.png -i images/img138.png -i images/img139.png -i images/img140.png -i images/img141.png -i images/img142.png -i images/img143.png -i images/img144.png -i images/img145.png -i images/img146.png -i images/img147.png -i images/img148.png -i images/img149.png -i images/img150.png -i images/img151.png -i images/img152.png -i images/img153.png -i images/img154.png -i images/img155.png -i images/img156.png -i images/img157.png -i images/img158.png -i images/img159.png -i images/img160.png -i images/img161.png -i images/img162.png -i images/img163.png -i images/img164.png -i images/img165.png -i images/img166.png -i images/img167.png -i images/img168.png -i images/img169.png -i images/img170.png -i images/img171.png -i images/img172.png -i images/img173.png -i images/img174.png -i images/img175.png -i images/img176.png -i images/img177.png -i images/img178.png -i images/img179.png -i images/img180.png -i images/img181.png -i images/img182.png -i images/img183.png -i images/img184.png -i images/img185.png -i images/img186.png -i images/img187.png -i images/img188.png -i images/img189.png -i images/img190.png -i images/img191.png -i images/img192.png -i images/img193.png -i images/img194.png -i images/img195.png -i images/img196.png -i images/img197.png -i images/img198.png -i images/img199.png -i images/img200.png -filter_complex "[1][0]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,0,0.04)'[v1]; 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[117][v116]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,4.64,4.68)'[v117]; [118][v117]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,4.68,4.72)'[v118]; [119][v118]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,4.72,4.76)'[v119]; [120][v119]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,4.76,4.8)'[v120]; [121][v120]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,4.8,4.84)'[v121]; [122][v121]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,4.84,4.88)'[v122]; [123][v122]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,4.88,4.92)'[v123]; [124][v123]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,4.92,4.96)'[v124]; [125][v124]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,4.96,5)'[v125]; [126][v125]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5,5.04)'[v126]; [127][v126]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.04,5.08)'[v127]; [128][v127]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.08,5.12)'[v128]; [129][v128]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.12,5.16)'[v129]; [130][v129]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.16,5.2)'[v130]; [131][v130]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.2,5.24)'[v131]; [132][v131]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.24,5.28)'[v132]; [133][v132]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.28,5.32)'[v133]; [134][v133]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.32,5.36)'[v134]; [135][v134]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.36,5.4)'[v135]; [136][v135]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.4,5.44)'[v136]; [137][v136]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.44,5.48)'[v137]; [138][v137]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.48,5.52)'[v138]; [139][v138]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.52,5.56)'[v139]; [140][v139]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.56,5.6)'[v140]; [141][v140]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.6,5.64)'[v141]; [142][v141]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.64,5.68)'[v142]; [143][v142]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.68,5.72)'[v143]; [144][v143]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.72,5.76)'[v144]; [145][v144]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.76,5.8)'[v145]; [146][v145]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.8,5.84)'[v146]; [147][v146]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.84,5.88)'[v147]; [148][v147]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.88,5.92)'[v148]; [149][v148]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.92,5.96)'[v149]; [150][v149]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,5.96,6)'[v150]; [151][v150]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6,6.04)'[v151]; [152][v151]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.04,6.08)'[v152]; [153][v152]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.08,6.12)'[v153]; [154][v153]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.12,6.16)'[v154]; [155][v154]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.16,6.2)'[v155]; [156][v155]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.2,6.24)'[v156]; [157][v156]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.24,6.28)'[v157]; [158][v157]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.28,6.32)'[v158]; [159][v158]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.32,6.36)'[v159]; [160][v159]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.36,6.4)'[v160]; [161][v160]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.4,6.44)'[v161]; [162][v161]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.44,6.48)'[v162]; [163][v162]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.48,6.52)'[v163]; [164][v163]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.52,6.56)'[v164]; [165][v164]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.56,6.6)'[v165]; [166][v165]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.6,6.64)'[v166]; [167][v166]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.64,6.68)'[v167]; [168][v167]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.68,6.72)'[v168]; [169][v168]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.72,6.76)'[v169]; [170][v169]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.76,6.8)'[v170]; [171][v170]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.8,6.84)'[v171]; [172][v171]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.84,6.88)'[v172]; [173][v172]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.88,6.92)'[v173]; [174][v173]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.92,6.96)'[v174]; [175][v174]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,6.96,7)'[v175]; [176][v175]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7,7.04)'[v176]; [177][v176]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.04,7.08)'[v177]; [178][v177]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.08,7.12)'[v178]; [179][v178]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.12,7.16)'[v179]; [180][v179]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.16,7.2)'[v180]; [181][v180]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.2,7.24)'[v181]; [182][v181]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.24,7.28)'[v182]; [183][v182]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.28,7.32)'[v183]; [184][v183]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.32,7.36)'[v184]; [185][v184]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.36,7.4)'[v185]; [186][v185]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.4,7.44)'[v186]; [187][v186]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.44,7.48)'[v187]; [188][v187]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.48,7.52)'[v188]; [189][v188]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.52,7.56)'[v189]; [190][v189]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.56,7.6)'[v190]; [191][v190]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.6,7.64)'[v191]; [192][v191]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.64,7.68)'[v192]; [193][v192]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.68,7.72)'[v193]; [194][v193]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.72,7.76)'[v194]; [195][v194]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.76,7.8)'[v195]; [196][v195]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.8,7.84)'[v196]; [197][v196]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.84,7.88)'[v197]; [198][v197]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.88,7.92)'[v198]; [199][v198]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.92,7.96)'[v199]; [200][v199]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='between(t,7.96,8)'[v200]; [201][v200]scale2ref[b][a];[a][b]overlay=x=0:y=0:enable='gt(t,8)'[v201]" -map "[v201]" -map 0:a edited_videos/output.mp4


  


  Below is short version of command in which there are only fourinputs but in the above actual command the number of inputs increased

  


  ffmpeg -i sample.mp4 -i img0.png -i img1.png -i img2.png    -filter_complex  "[0][1]overlay=x=20:y=20:enable='between(t,1.5,1.8)'[v1];  [v1][2]overlay=x=20:y=20:enable='between(t,1.8,3)'[v2];          [v2][3]overlay=x=20:y=20:enable='gt(t,3)'[v3]"         -map "[v3]" -map 0:a  outa.mp4