Re: [FFmpeg-user] Upscaling SD 4x3 to FullHD 16x9 - Aspect Ratio problem
Gyan Doshi
thank you, that worked fine!
2018-06-22 15:09 GMT+02:00 Gyan Doshi :
>
>
> On 22-06-2018 06:13 PM, Christoph Gerstbauer wrote:
>
>
>> CommandLineOutput:
>>
>> ffmpeg -i "F:\scaler test\_5sec.avi" -vf "crop=720:576:0:32, setfield=tff,
>> yadif=1:0:0, scale=-1:1080, tinterlace=interleave_top, fieldorder=tff"
>> -vcodec ffvhuff -an -s 1920x1080 -aspect 16:9 "F:\scaler
>>
>
> Since you're scaling proportionally ("-1:1080"), you need to pad out the
> frame to FHD.
>
> ffmpeg -i in -vf "crop=720:576:0:32,setfield=tff,yadif=1:0:0,
> scale=-1:1080,pad=1920:1080:(ow-iw)/2:(oh-ih)/2,
> tinterlace=interleave_top, fieldorder=tff,
> setsar=1"
>-c:v ffvhuff -an -aspect 16:9 out
>
> Additionally, since your input isn't square-pixels, the following scale
> may be more accurate,
>
> scale=oh*4/3:1080
>
> Regards,
> Gyan
>
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Re: [FFmpeg-user] Upscaling SD 4x3 to FullHD 16x9 - Aspect Ratio problem
Here is an interesting article: https://avpres.net/FFmpeg/SD_HD.html as far as scaling and re-sampling algo goes I would invoke avisynth and try thin raster with Spline64Resize(1440,1080) as it usually gives better Y-PSNR metric. Try also sinc re-sampler and see if it suits your case. Once material is with a lot of fractal details I get crisper results with it. I would also consider colorspace matrix compensation for luma coefficients like colormatrix=bt601:bt709 and then your padding formula pad=1920:1080:240:0 Re-interlacing might not be necessary after all, even if it goes to play-out. Kind Regards. . On Fri, Jun 22, 2018 at 3:19 PM, Cley Faye wrote: > Le ven. 22 juin 2018 à 15:10, Christoph Gerstbauer < > christophgerstba...@gmail.com> a écrit : > > > > > > > > > > The "-s" option is incorrect in your case. From the documentation: > > > > As an output option, this inserts the scale video filter to the end > of > > > the corresponding filtergraph. Please use the scale filter directly to > > > insert it at the beginning or some other place. > > > > > > The scale video filter will take whatever ends up from your filter, and > > > scale it without respect to aspect ratio. > > > To do what you want, you probable have to use a complex filter, where > you > > > create a secondary black source and paste the output of your current > > filter > > > into it using the "overlay" filter. > > > > > > > I understand > > So i need to generate (after the cropping and deinterlacing to 720x576 > 50p) > > a filter syntax (within the videofilter) which transforms the 720x576 4:3 > > content to a pillarbox 1050x576 quare pixel video (with black bars at > > sides) -> and THIS one I can rescale to HD. > > Correct? > > > > if yes, has anyone more experience with that? > > > > Roughly. Look at the other answer; it basically does the pillarbox *after* > the initlal rescale, which is probably a better idea. > ___ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] Upscaling SD 4x3 to FullHD 16x9 - Aspect Ratio problem
Le ven. 22 juin 2018 à 15:10, Christoph Gerstbauer < christophgerstba...@gmail.com> a écrit : > > > > > > The "-s" option is incorrect in your case. From the documentation: > > > As an output option, this inserts the scale video filter to the end of > > the corresponding filtergraph. Please use the scale filter directly to > > insert it at the beginning or some other place. > > > > The scale video filter will take whatever ends up from your filter, and > > scale it without respect to aspect ratio. > > To do what you want, you probable have to use a complex filter, where you > > create a secondary black source and paste the output of your current > filter > > into it using the "overlay" filter. > > > > I understand > So i need to generate (after the cropping and deinterlacing to 720x576 50p) > a filter syntax (within the videofilter) which transforms the 720x576 4:3 > content to a pillarbox 1050x576 quare pixel video (with black bars at > sides) -> and THIS one I can rescale to HD. > Correct? > > if yes, has anyone more experience with that? > Roughly. Look at the other answer; it basically does the pillarbox *after* the initlal rescale, which is probably a better idea. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] Upscaling SD 4x3 to FullHD 16x9 - Aspect Ratio problem
> > > The "-s" option is incorrect in your case. From the documentation: > > As an output option, this inserts the scale video filter to the end of > the corresponding filtergraph. Please use the scale filter directly to > insert it at the beginning or some other place. > > The scale video filter will take whatever ends up from your filter, and > scale it without respect to aspect ratio. > To do what you want, you probable have to use a complex filter, where you > create a secondary black source and paste the output of your current filter > into it using the "overlay" filter. > I understand So i need to generate (after the cropping and deinterlacing to 720x576 50p) a filter syntax (within the videofilter) which transforms the 720x576 4:3 content to a pillarbox 1050x576 quare pixel video (with black bars at sides) -> and THIS one I can rescale to HD. Correct? if yes, has anyone more experience with that? br Chris ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] Upscaling SD 4x3 to FullHD 16x9 - Aspect Ratio problem
On 22-06-2018 06:13 PM, Christoph Gerstbauer wrote:
CommandLineOutput:
ffmpeg -i "F:\scaler test\_5sec.avi" -vf "crop=720:576:0:32, setfield=tff,
yadif=1:0:0, scale=-1:1080, tinterlace=interleave_top, fieldorder=tff"
-vcodec ffvhuff -an -s 1920x1080 -aspect 16:9 "F:\scaler
Since you're scaling proportionally ("-1:1080"), you need to pad out the
frame to FHD.
ffmpeg -i in -vf "crop=720:576:0:32,setfield=tff,yadif=1:0:0,
scale=-1:1080,pad=1920:1080:(ow-iw)/2:(oh-ih)/2,
tinterlace=interleave_top, fieldorder=tff,
setsar=1"
-c:v ffvhuff -an -aspect 16:9 out
Additionally, since your input isn't square-pixels, the following scale
may be more accurate,
scale=oh*4/3:1080
Regards,
Gyan
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[FFmpeg-user] Upscaling SD 4x3 to FullHD 16x9 - Aspect Ratio problem
Hello I am trying to upscale a 720x608 (incl VBI) 25i 4:3 source to 1920x1080 25i 16:9. My deinterlacing and reinterlacing is working, scaling and cropping too. But I have understanding problem how to use the videofilter regarding aspect ratios. My source is 4:3 and the target is 16:9. For the target I am expecting that I get a PillarBox FullHD image (black bars left and right) where the original 4:3 aspect ratio of the source is kept. PROBLEM: But I get only a stretched 16:9 HD version of the 4:3 original image. (no black bars at left and right) See files: https://www.dropbox.com/s/mgwmiitcpgta0ym/scalertest.zip?dl=0 CommandLineOutput: ffmpeg -i "F:\scaler test\_5sec.avi" -vf "crop=720:576:0:32, setfield=tff, yadif=1:0:0, scale=-1:1080, tinterlace=interleave_top, fieldorder=tff" -vcodec ffvhuff -an -s 1920x1080 -aspect 16:9 "F:\scaler test\_5sec_fullHDinterlaced.avi" ffmpeg version 3.4 Copyright (c) 2000-2017 the FFmpeg developers built with gcc 7.2.0 (GCC) configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth --enable-libmfx libavutil 55. 78.100 / 55. 78.100 libavcodec 57.107.100 / 57.107.100 libavformat57. 83.100 / 57. 83.100 libavdevice57. 10.100 / 57. 10.100 libavfilter 6.107.100 / 6.107.100 libswscale 4. 8.100 / 4. 8.100 libswresample 2. 9.100 / 2. 9.100 libpostproc54. 7.100 / 54. 7.100 Input #0, avi, from 'F:\scaler test\_5sec.avi': Metadata: encoder : Lavf58.12.100 Duration: 00:00:05.00, start: 0.00, bitrate: 116115 kb/s Stream #0:0: Video: ffvhuff (FFVH / 0x48564646), yuv422p, 720x608, 107684 kb/s, SAR 152:135 DAR 4:3, 25 fps, 25 tbr, 25 tbn, 25 tbc Stream #0:1: Audio: pcm_s24le ([1][0][0][0] / 0x0001), 48000 Hz, 7.1, s32 (24 bit), 9216 kb/s File 'F:\scaler test\_5sec_fullHDinterlaced.avi' already exists. Overwrite ? [y/N] y Stream mapping: Stream #0:0 -> #0:0 (ffvhuff (native) -> ffvhuff (native)) Press [q] to stop, [?] for help Output #0, avi, to 'F:\scaler test\_5sec_fullHDinterlaced.avi': Metadata: ISFT: Lavf57.83.100 Stream #0:0: Video: ffvhuff (FFVH / 0x48564646), yuv422p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc Metadata: encoder : Lavc57.107.100 ffvhuff frame= 125 fps= 53 q=-0.0 Lsize= 200261kB time=00:00:05.00 bitrate=328108.1kbits/s speed=2.14x video:200253kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.004325% Best Regards Christoph Gerstbauer ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
