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Don't scale images extracted by ffmpeg

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This commit is contained in:
Fernando Fernández 2020-11-17 14:20:18 +01:00
parent fc3d6278be
commit a6ad36b57a
1 changed files with 10 additions and 10 deletions
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20
MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs
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@ -520,29 +520,29 @@ namespace MediaBrowser.MediaEncoding.Encoder
var tempExtractPath = Path.Combine(_configurationManager.ApplicationPaths.TempDirectory, Guid.NewGuid() + ".jpg");
Directory.CreateDirectory(Path.GetDirectoryName(tempExtractPath));
// apply some filters to thumbnail extracted below (below) crop any black lines that we made and get the correct ar then scale to width 600.
// apply some filters to thumbnail extracted below (below) crop any black lines that we made and get the correct ar.
// This filter chain may have adverse effects on recorded tv thumbnails if ar changes during presentation ex. commercials @ diff ar
var vf = "scale=600:trunc(600/dar/2)*2";
var vf = String.Empty;
if (threedFormat.HasValue)
{
switch (threedFormat.Value)
{
case Video3DFormat.HalfSideBySide:
vf = "crop=iw/2:ih:0:0,scale=(iw*2):ih,setdar=dar=a,crop=min(iw\\,ih*dar):min(ih\\,iw/dar):(iw-min(iw\\,iw*sar))/2:(ih - min (ih\\,ih/sar))/2,setsar=sar=1,scale=600:trunc(600/dar/2)*2";
// hsbs crop width in half,scale to correct size, set the display aspect,crop out any black bars we may have made the scale width to 600. Work out the correct height based on the display aspect it will maintain the aspect where -1 in this case (3d) may not.
vf = "crop=iw/2:ih:0:0,scale=(iw*2):ih,setdar=dar=a,crop=min(iw\\,ih*dar):min(ih\\,iw/dar):(iw-min(iw\\,iw*sar))/2:(ih - min (ih\\,ih/sar))/2,setsar=sar=1";
// hsbs crop width in half,scale to correct size, set the display aspect,crop out any black bars we may have made. Work out the correct height based on the display aspect it will maintain the aspect where -1 in this case (3d) may not.
break;
case Video3DFormat.FullSideBySide:
vf = "crop=iw/2:ih:0:0,setdar=dar=a,crop=min(iw\\,ih*dar):min(ih\\,iw/dar):(iw-min(iw\\,iw*sar))/2:(ih - min (ih\\,ih/sar))/2,setsar=sar=1,scale=600:trunc(600/dar/2)*2";
// fsbs crop width in half,set the display aspect,crop out any black bars we may have made the scale width to 600.
vf = "crop=iw/2:ih:0:0,setdar=dar=a,crop=min(iw\\,ih*dar):min(ih\\,iw/dar):(iw-min(iw\\,iw*sar))/2:(ih - min (ih\\,ih/sar))/2,setsar=sar=1";
// fsbs crop width in half,set the display aspect,crop out any black bars we may have made
break;
case Video3DFormat.HalfTopAndBottom:
vf = "crop=iw:ih/2:0:0,scale=(iw*2):ih),setdar=dar=a,crop=min(iw\\,ih*dar):min(ih\\,iw/dar):(iw-min(iw\\,iw*sar))/2:(ih - min (ih\\,ih/sar))/2,setsar=sar=1,scale=600:trunc(600/dar/2)*2";
// htab crop heigh in half,scale to correct size, set the display aspect,crop out any black bars we may have made the scale width to 600
vf = "crop=iw:ih/2:0:0,scale=(iw*2):ih),setdar=dar=a,crop=min(iw\\,ih*dar):min(ih\\,iw/dar):(iw-min(iw\\,iw*sar))/2:(ih - min (ih\\,ih/sar))/2,setsar=sar=1";
// htab crop heigh in half,scale to correct size, set the display aspect,crop out any black bars we may have made
break;
case Video3DFormat.FullTopAndBottom:
vf = "crop=iw:ih/2:0:0,setdar=dar=a,crop=min(iw\\,ih*dar):min(ih\\,iw/dar):(iw-min(iw\\,iw*sar))/2:(ih - min (ih\\,ih/sar))/2,setsar=sar=1,scale=600:trunc(600/dar/2)*2";
// ftab crop heigt in half, set the display aspect,crop out any black bars we may have made the scale width to 600
vf = "crop=iw:ih/2:0:0,setdar=dar=a,crop=min(iw\\,ih*dar):min(ih\\,iw/dar):(iw-min(iw\\,iw*sar))/2:(ih - min (ih\\,ih/sar))/2,setsar=sar=1";
// ftab crop heigt in half, set the display aspect,crop out any black bars we may have made
break;
default:
break;