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  1. Works for me - your sample source produce valid file with some D-VHS assumptions (based mostly on JVC product spec + ATSC/ANSI)
    video and audio processing very limited, native framerate as source (no telecine a.k.a. "pulldown") - can be extended, basic part works.
    There is many question marks related to D-VHS framerates supported, MPEG-2 encoding limitations, ATSC vs DVB PSI/SI etc.

    Code:
    @setlocal
    @cls
    @echo "script partialy based on: https://forum.doom9.org/showthread.php?p=1809116#post1809116 GMJCZP, version 4.0, 11/07/2017"
    
    @set /a cput=(NUMBER_OF_PROCESSORS*3)/2
    @echo CPU's=%cput%
    
    @set fname=%~1
    
    @rem TS bitrate (28.2Mbps D-VHS?)
    @rem set tsbr=28200
    @set tsbr=19390.4
    @set mpegts=-start_at_zero -muxrate %tsbr%k
    
    @rem audio bitrate
    @set abr=448
    
    @rem video bitrate
    @set /a vmaxbr=tsbr-(abr+256)
    @set /a vidbr=vmaxbr-1024
    
    @rem set h262 MP@HL a.k.a -profile:v 4 -level:v 4
    
    @rem set VBV Buffer Size (ATSC 999424 (61*16384 ?!?), ANSI/SCTE 43 = 7995392 (488*16384), DVD = 1835008 (112*16384) )
    @set /a vbv_buffsize=(244*16384)
    
    @rem GOP size (15 PAL, 18 NTSC, 12 film - GOP lenght <500ms)
    @set gop=18
    @rem maximum number of B-frames (0..4, 2 for DVD compatibility)
    @set bf=2
    
    @rem Manono1 quantization matrix
    @set intra="8,8,8,9,11,13,14,17,8,8,9,11,13,13,14,17,8,8,11,12,13,14,17,94,9,11,13,13,14,17,17,94,11,11,13,13,14,17,94,94,13,13,14,16,17,20,94,94,13,13,14,17,94,94,94,94,13,14,17,94,94,94,94,94"
    @set inter="12,12,13,14,15,16,22,26,12,13,14,15,16,22,26,32,13,14,15,16,22,26,32,41,14,15,16,22,26,32,41,53,15,16,22,26,32,41,53,94,16,22,26,32,41,53,70,94,22,26,32,41,53,70,94,94,26,32,41,53,94,94,94,94"
    
    @rem video processing for interlace 
    @rem set vproc="pp=ac,minterpolate=fps=60000/1001:mi_mode=2:mc_mode=1:me_mode=1:me=6:vsbmc=1,tinterlace=mode=4,format=pix_fmts=yuv420p"
    @rem set vproc="pp=ac,fps=fps=60000/1001,tinterlace=mode=4,format=pix_fmts=yuv420p"
    
    @rem video processing for interlace???? (unclear soft or hard coded telecine)
    @rem set vproc="pp=ac,telecine=pattern=2332,format=pix_fmts=yuv420p"
    
    @rem video processing for progressive
    @set vproc="pp=ac,format=pix_fmts=yuv420p"
    
    @rem audio processing
    @set aproc="pan=5.1(side)|FL<FL+0.5FLC|FR<FR+0.5FRC|FC<1.414FC+0.5FLC+0.5FRC|LFE=LFE|SL<SL+BL|SR<SR+BR"
    
    @rem interlace
    @rem ffmpeg.exe -y -hide_banner -loglevel 32 -stats -threads %cput%  -i "%fname%" -vf %vproc% -c:v mpeg2video -profile:v 4 -level:v 4 -b:v %vidbr%k -maxrate %vmaxbr%k -bufsize %vbv_buffsize% -g %gop% -bf %bf% -bidir_refine 0 -sc_threshold -30000 -b_sensitivity 40 -me_range 0 -mpv_flags mv0+naq -mv0_threshold 0 -mbd 2 -mbcmp 2 -precmp 2 -subcmp 2 -cmp 2 -skip_cmp 2 -dia_size -4 -pre_dia_size -4 -preme 2 -last_pred 2 -seq_disp_ext 1 -quantizer_noise_shaping 0 -dc 9 -lmin 0.75 -mblmin 50.0 -qmin 2.0 -qcomp 0.75 -intra_vlc true -intra_matrix %intra% -inter_matrix %inter% -flags:v +ilme+ildct -top 1 -color_primaries 1 -color_trc 1 -colorspace 1 -color_range 1 -aspect 16/9 -af %aproc% -c:a ac3 -b:a %abr%k -f mpegts %mpegts% "%~n1_h262_ac3_d-vhs_i.ts"
    
    @rem progressive
    @ffmpeg.exe -y -hide_banner -loglevel 32 -stats -threads %cput%  -i "%fname%" -vf %vproc% -c:v mpeg2video -profile:v 4 -level:v 4 -b:v %vidbr%k -maxrate %vmaxbr%k -bufsize %vbv_buffsize% -g %gop% -bf %bf% -bidir_refine 0 -sc_threshold -30000 -b_sensitivity 40 -me_range 0 -mpv_flags mv0+naq -mv0_threshold 0 -mbd 2 -mbcmp 2 -precmp 2 -subcmp 2 -cmp 2 -skip_cmp 2 -dia_size -4 -pre_dia_size -4 -preme 2 -last_pred 2 -seq_disp_ext 1 -quantizer_noise_shaping 0 -dc 9 -lmin 0.75 -mblmin 50.0 -qmin 2.0 -qcomp 0.75 -intra_vlc true -intra_matrix %intra% -inter_matrix %inter% -color_primaries 1 -color_trc 1 -colorspace 1 -color_range 1 -aspect 16/9 -af %aproc% -c:a ac3 -b:a %abr%k -f mpegts %mpegts% "%~n1_h262_ac3_d-vhs_p.ts"
    
    @endlocal
    @pause
    Last edited by pandy; 5th Jan 2019 at 13:05. Reason: fixed script issues, interlace and telecine (3 types), interlace and progressive h.262 encoding - progressive path active
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  2. Member dellsam34's Avatar
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    Can you link the resulting file so I can try to send it to tape?
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  3. Originally Posted by dellsam34 View Post
    Can you link the resulting file so I can try to send it to tape?
    over 200MB and was already removed from my hdd - of course i can encode it once again but anyway will be unable to upload this file to VH forum due legality but also other VH limitations. I can upload it to free, non registration required, hassle free place - just provide url.

    OK, reencoded it - where i can upload file?
    Last edited by pandy; 2nd Jan 2019 at 12:38.
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  4. Member dellsam34's Avatar
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    Sorry to bother you, I use mediafire, register for free and you get 50gb of storage.
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  5. Originally Posted by dellsam34 View Post
    Sorry to bother you, I use mediafire, register for free and you get 50gb of storage.
    I can register only if i get money - i know few file sharing services where no registration is required.

    Try this one: https://ulozto.net/!Py89rxYtm43y/terminator-h262-ac3-d-vhs-ts
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  6. Member dellsam34's Avatar
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    The difference is the download speed, It will take me about an hour to download that file but with mediafire is about a minute, But thanks for the contribution, I will report back with the results as soon as the download is finished.
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  7. Originally Posted by dellsam34 View Post
    The difference is the download speed, It will take me about an hour to download that file but with mediafire is about a minute, But thanks for the contribution, I will report back with the results as soon as the download is finished.
    Upload is fast. No registration. Free. I can't complain.
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  8. Member dellsam34's Avatar
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    Unfortunately the file you produced didn't play, Heavy freezing and pixelization, At this point I think the Progressive flag needs to be addressed, A guy from AVSforum provided me with a broadcast file and compared the settings the only difference I see is progressive vs interlaced.
    The file he sent me records and plays back perfectly.
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  9. Provide sample then we can change script settings. There is too many unknowns in D-VHS (for example VBV buffer size is one of critical things)...
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  10. Member dellsam34's Avatar
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    Here is the sample he gave me, It is a TV recording.
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  11. try this one:
    Last edited by johns0; 2nd Jan 2019 at 19:43. Reason: was a link to warez
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  12. aBigMeanie aedipuss's Avatar
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    [QUOTE=pandy;2538614]try this one:



    looks like an illegal download you are promoting???
    --
    "a lot of people are better dead" - prisoner KSC2-303
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  13. Originally Posted by aedipuss View Post
    Originally Posted by pandy View Post
    try this one:



    looks like an illegal download you are promoting???
    IMHO not but if yes then unintentionally - using provided by OP 1 minute sample - i use provided sample on general fair use policy just as prove of concept H.262 encoding for D-VHS.
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  14. Member dellsam34's Avatar
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    Just PM me the link, We are not breaking any law, Those are samples from trailers, We are not promoting full movies, So much for "VideoHelp"
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  15. Member DB83's Avatar
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    In the spirit of VideoHelp.........

    The link is.......

    In the email you should have received since pandy was the first reply after your own post.

    And call me a pedantic little (insert your own word here) but I still fail to see ANY benefit in doing what you want. But, hey, it is your baby. Let it grow.

    Just a little friendly tip. Not a good idea to publically challenge moderators' decisions. We can all disagree with some of them. But they do work for the common good.
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  16. Well... i'm not judging any decision, just explaining that from my perspective it was simple data organized as X,Y,Z and used to check H.262 MP@HL ffmpeg encoding - that's all. And Terminator (all parts) was aired (FTA) at least in my country many times so i paid it trough my taxes all legal fees required (IMHO everyone paid as all memory/storage devices are taxed for this purpose worldwide).
    Last edited by pandy; 3rd Jan 2019 at 06:27.
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  17. Member dellsam34's Avatar
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    Pandy, You don't have to explain yourself, No one is doing anything wrong here, Shit get flagged automatically and mods don't have time to look at every flag's details. You can still send me a private message and I will give it a try and report back if it worked or not, Meanwhile I'm trying every little piece of software I get my hands on until I finally find the right setting. Videoredo suite 5 is full of feature only if I know which option will work.

    The AVSforum member in the other hand got back to me with a compliant sample file from the source sample you have, Check it out and let me know what do you think, He said he used the ffmpeg command line:
    ffmpeg -i Name.m2ts -c:v mpeg2video -b:v 23000000 -acodec ac3 -muxrate 25000000 Name.ts
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  18. Member DB83's Avatar
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    Originally Posted by pandy View Post
    Well... i'm not judging any decision, just explaining that from my perspective it was simple data organized as X,Y,Z and use to check H.262 MP@HL ffmpeg encoding - that's all. And Terminator (all parts) was aired (FTA) at least in my country many times so i paid it trough my taxes all legal fees required (IMHO everyone paid as all memory/storage devices are taxed for this purpose worldwide).
    I realise this is probably not directed to me and these films are broadcast FTA over here as well. But.......

    All tv channels do have to pay the rights-holder for the use so, technically, any redistribution can be considered as an infringement. There was, probably, an over-reaction on the part of Johns but it has to be taken on the chin.

    Since the OP has ignored my post it begs another question but I guess he will not be getting any help from me in the future even if I could assist.
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  19. Member dellsam34's Avatar
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    Pandy, Your file worked flawlessly, Not a single glitch, Now I have to learn how to do this on my own. I would love to see the bitrate little higher though.
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  20. Originally Posted by dellsam34 View Post
    Pandy, Your file worked flawlessly, Not a single glitch, Now I have to learn how to do this on my own. I would love to see the bitrate little higher though.
    Will reply similar as in my PM:

    I think bitrate with VBV buffer size may be a key to successful playout.
    Bitrate can be adjusted easily - by raising TS mux bitrate then max video bitrate allowed will be substantially higher - i reserved 256kbps for PSI/IS and stuffing, audio bitrate is 448kbps (very decent bitrate for 5.1 audio - DVD standard).
    Decision to not encode source as interlaced should improve overall quality as interlaced encoding is approx 30% less efficient than progressive.

    I will strongly emphasize: VBV is quite important and big unknown for this D-VHS world - i used in first sample maximum allowed by ANSI/SCTE, second sample was encoded with VBV half of maximum allowed by ANSI/SCTE - have no mpeg-2 es analyzer and simply don't feel so interested to decode header with hex manual labour but i've found 3 different specs with VBV buffer sizes - ATSC very low (ridiculously low) 61, then DVD standard 112 and finally ANSI/SCTE 488 - last sample was encoded with 244 i.e. half of 488 and in bytes it was also bellow 4MB (sounds sane for technology 15 year old - RAM cost is always sensitive factor for consumer market).

    I can edit script and place it in main topic - progressive encoding, it can be used in drag & drop fashion (so edit not required) just place ffmpeg in some folder or even same place as script, drag & drop source video on icon representing script and ffmpeg will do the rest.
    I also feel to say that such source is very difficult to be efficiently encoded especially by older codecs such as MPEG-2 - there is film grain (perhaps artificial noise too) and due of high entropy of noise it is impossible to efficiently encode it - i do expect that encoded video will be almost like CBR with only small bitrate variability.
    based on description i would also not recommend to push bitrate significantly higher than 20 - 24Mbps - looks like D-VHS may not provide sufficient error correction and after so many years i can only imagine that tapes are deteriorated so there is plenty of uncorrectable errors probably (for sure significant issue for magnetic tapes is drop-out), by keeping video bitrate lower there is a chance to get relatively error free playout.
    Also not all possible (at least in theory) features was active during encoding (for example ffmpeg provide undocumented option -quantizer_noise_shaping that may improve quality overall but seem it is painfully slow and remain undocumented - didn't bother to dig in ffmpeg source to understand what they mean by this).
    It will be nice also to focus on CRF than on bitrate however -q:v 2 simply didn't work too me in expected way.
    Oh, forgot to mention that ffmpeg doesn't support dynamic GOP structure and dynamic matrix selection - as such HCenc may be a better choice to really squeeze last bit... but workflow will be way more complex.
    Last edited by pandy; 3rd Jan 2019 at 07:40.
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  21. Member dellsam34's Avatar
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    Yes even the AVSforum guy guy said 25Mbps is the max you can go on D-VHS file, Don't know why it was advertised as 28.2Mbps? Any way what is the exact commend you used for that file, I'm satisfied with the quality.
    Is it ok to use WinFF as GUI for ffmpeg? Does it do the exact same job?
    I will start a new thread on how to use ffmpeg.
    Last edited by dellsam34; 3rd Jan 2019 at 13:59.
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  22. Honestly have no clue about WinFF - but technically you can just copy bellow script, place it in some folder with ffmpeg.exe and drag & drop video/audio source - ffmpeg will start encoding.
    Bitrate for TS is set as ATSC 19.3904Mbps - quality should similar to terrestrial broadcast in US (not sure which one is used in Mexico) - if you wish you can try to modify bitrate (highlighted by red) to some accepted value for example 24000 for 24Mbps

    Code:
    @setlocal
    @cls
    @echo "script partialy based on: https://forum.doom9.org/showthread.php?p=1809116#post1809116 GMJCZP, version 4.0, 11/07/2017"
    
    @set /a cput=(NUMBER_OF_PROCESSORS*3)/2
    @echo CPU's=%cput%
    
    @set fname=%~1
    
    @rem TS bitrate (28.2Mbps D-VHS?)
    @rem set tsbr=28200
    @set tsbr=19390.4
    @set mpegts=-start_at_zero -muxrate %tsbr%k
    
    @rem audio bitrate
    @set abr=448
    
    @rem video bitrate
    @set /a vmaxbr=tsbr-(abr+256)
    @set /a vidbr=vmaxbr-1024
    
    @rem set h262 MP@HL a.k.a -profile:v 4 -level:v 4
    
    @rem set VBV Buffer Size (ATSC 999424 (61*16384 ?!?), ANSI/SCTE 43 = 7995392 (488*16384), DVD = 1835008 (112*16384) )
    @set /a vbv_buffsize=(244*16384)
    
    @rem GOP size (15 PAL, 18 NTSC, 12 film - GOP lenght <500ms)
    @set gop=18
    @rem maximum number of B-frames (0..4, 2 for DVD compatibility)
    @set bf=2
    
    @rem Manono1 quantization matrix
    @set intra="8,8,8,9,11,13,14,17,8,8,9,11,13,13,14,17,8,8,11,12,13,14,17,94,9,11,13,13,14,17,17,94,11,11,13,13,14,17,94,94,13,13,14,16,17,20,94,94,13,13,14,17,94,94,94,94,13,14,17,94,94,94,94,94"
    @set inter="12,12,13,14,15,16,22,26,12,13,14,15,16,22,26,32,13,14,15,16,22,26,32,41,14,15,16,22,26,32,41,53,15,16,22,26,32,41,53,94,16,22,26,32,41,53,70,94,22,26,32,41,53,70,94,94,26,32,41,53,94,94,94,94"
    
    @rem video processing for interlace 
    @rem set vproc="pp=ac,minterpolate=fps=60000/1001:mi_mode=2:mc_mode=1:me_mode=1:me=6:vsbmc=1,tinterlace=mode=4,format=pix_fmts=yuv420p"
    @rem set vproc="pp=ac,fps=fps=60000/1001,tinterlace=mode=4,format=pix_fmts=yuv420p"
    
    @rem video processing for interlace???? (unclear soft or hard coded telecine)
    @rem set vproc="pp=ac,telecine=pattern=2332,format=pix_fmts=yuv420p"
    
    @rem video processing for progressive
    @set vproc="pp=ac,format=pix_fmts=yuv420p"
    
    @rem audio processing
    @set aproc="pan=5.1(side)|FL<FL+0.5FLC|FR<FR+0.5FRC|FC<1.414FC+0.5FLC+0.5FRC|LFE=LFE|SL<SL+BL|SR<SR+BR"
    
    @rem interlace
    @rem ffmpeg.exe -y -hide_banner -loglevel 32 -stats -threads %cput%  -i "%fname%" -vf %vproc% -c:v mpeg2video -profile:v 4 -level:v 4 -b:v %vidbr%k -maxrate %vmaxbr%k -bufsize %vbv_buffsize% -g %gop% -bf %bf% -bidir_refine 0 -sc_threshold -30000 -b_sensitivity 40 -me_range 0 -mpv_flags mv0+naq -mv0_threshold 0 -mbd 2 -mbcmp 2 -precmp 2 -subcmp 2 -cmp 2 -skip_cmp 2 -dia_size -4 -pre_dia_size -4 -preme 2 -last_pred 2 -seq_disp_ext 1 -quantizer_noise_shaping 0 -dc 9 -lmin 0.75 -mblmin 50.0 -qmin 2.0 -qcomp 0.75 -intra_vlc true -intra_matrix %intra% -inter_matrix %inter% -flags:v +ilme+ildct -top 1 -color_primaries 1 -color_trc 1 -colorspace 1 -color_range 1 -aspect 16/9 -af %aproc% -c:a ac3 -b:a %abr%k -f mpegts %mpegts% "%~n1_h262_ac3_d-vhs_i.ts"
    
    @rem progressive
    @ffmpeg.exe -y -hide_banner -loglevel 32 -stats -threads %cput%  -i "%fname%" -vf %vproc% -c:v mpeg2video -profile:v 4 -level:v 4 -b:v %vidbr%k -maxrate %vmaxbr%k -bufsize %vbv_buffsize% -g %gop% -bf %bf% -bidir_refine 0 -sc_threshold -30000 -b_sensitivity 40 -me_range 0 -mpv_flags mv0+naq -mv0_threshold 0 -mbd 2 -mbcmp 2 -precmp 2 -subcmp 2 -cmp 2 -skip_cmp 2 -dia_size -4 -pre_dia_size -4 -preme 2 -last_pred 2 -seq_disp_ext 1 -quantizer_noise_shaping 0 -dc 9 -lmin 0.75 -mblmin 50.0 -qmin 2.0 -qcomp 0.75 -intra_vlc true -intra_matrix %intra% -inter_matrix %inter% -color_primaries 1 -color_trc 1 -colorspace 1 -color_range 1 -aspect 16/9 -af %aproc% -c:a ac3 -b:a %abr%k -f mpegts %mpegts% "%~n1_h262_ac3_d-vhs_p.ts"
    
    @endlocal
    @pause
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  23. Member dellsam34's Avatar
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    Cool thanks, Great work man, You saved the day, I will tweak as I go but I can always fall back to the above script if all failed.

    One more question, The deck I have supports DTS, How do I keep DTS 5.1 in the setting if I wanted to?

    Edit:

    Yep I did just that and it worked, How long does it take to convert one hour video? It seems the processing speed is like 5 frames a second.
    Last edited by dellsam34; 3rd Jan 2019 at 15:11.
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  24. Originally Posted by dellsam34 View Post
    Cool thanks, Great work man, You saved the day, I will tweak as I go but I can always fall back to the above script if all failed.

    One more question, The deck I have supports DTS, How do I keep DTS 5.1 in the setting if I wanted to?
    It support DTS but not decode DTS (so no analog audio when only DTS audio is present). Secondly DTS require 1500kbps to deliver same or similar quality as AC-3 with 512Kbps. Those 1000kbps is very precious from MPEG-2 perspective.
    Of course i can replace AC3 to DTS but i would not recommend this.
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  25. As mentioned earlier, for DTS-MA you would probably want to demux the DTS core . FFmpeg does not support DTS-MA core extraction yet, I think it's on the to do list . You could remux the ffmpeg output in tsmuxer for example, and demux the original DTS core there . You don't even have to encode AC3 in the ffmpeg script (waste of CPU resources). You're just muxing the ffmpeg video stream, with the original DTS core
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  26. Member dellsam34's Avatar
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    No problem, I could use TSmuxer to down convert DTS HD to 5.1 DTS, How do you change the above script to keep DTS 5.1 and other tracks and subtitles unchanged? I believe D-VHS standard supports multi language and subtitles.
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  27. Originally Posted by dellsam34 View Post
    No problem, I could use TSmuxer to down convert DTS HD to 5.1 DTS, How do you change the above script to keep DTS 5.1 and other tracks and subtitles unchanged? I believe D-VHS standard supports multi language and subtitles.
    This is probably easier to do in tsmuxer ; you open the original, add the ffmpeg video stream, checkmark wanted streams, uncheckmark unwanted streams . For the DTS-MA track, make sure the downconvert option is selected

    You can think of it as replacing the original AVC stream, with the ffmpeg derived MPEG2 video stream, original DTS core track, and keeping everything else





    You also might want to test if it supports soft pulldown. Soft pulldown just means that flags signal repeat fields , instead of encoding actual repeat fields , so it "looks" interlaced to the player. This is common practice for film NTSC DVD's. That will yield higher quality at a given bitrate, because hard pulldown that you are using here encodes 25% more frames. You can think of it as "wasting" more bitrate on duplicate fields and frames, but also progressive encoding is better in terms of motion vectors. Unfortunately ffmpeg cannot encode with soft pulldown, but there are other tools that can add it later (eg. dgpulldown) , or during encoding (eg. hcenc)
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    Originally Posted by dellsam34 View Post
    How do you change the above script to keep DTS 5.1 and other tracks and subtitles unchanged?
    Throw in a -map 0 option somewhere between the input and output filenames. This will cause all streams to be sent to the output file.
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  29. I can only say - bit budget is very tight... streams should be selected carefully with respect to MPEG-2 video...
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  30. Member dellsam34's Avatar
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    Ok, some more development, I made two more samples one was capped at 25Mbps and the other at 28.2Mbps, The first one played with minor freezing and pixelisation, the later had heavy freezing and pixelisization. At this point I started to believe that consumer D-VHS decks cannot record more than 20Mbps which is the max a TV ATSC broadcast can deliver, But can playback pre-recorded tapes @ up to 28.2 Mbps Mux.
    Pre-Recorded D-Theater tapes averaged 25Mbps according to this thread:
    https://www.avsforum.com/forum/42-hdtv-recorders/153373-d-theater-dvhs-actual-bitrates.html
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