Scan type, store method?

[ndjamena]

Scan type, store method : Interleaved fields

I can't find another example of it's use, it was converted from a 1080i interlaced VC1 stream using FFMPEG and I'm wondering what it's done. (And what process it would have gone through to resize it.)

Video
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main@L3.1
Codec ID                                 : hev1
Codec ID/Info                            : High Efficiency Video Coding
Duration                                 : 51mn 10s
Bit rate                                 : 667 Kbps
Width                                    : 1 280 pixels
Height                                   : 720 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 29.970 fps
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Interlaced
Scan type, store method                  : Interleaved fields
Scan order                               : Top Field First
Bits/(Pixel*Frame)                       : 0.024
Stream size                              : 244 MiB (83%)
Writing library                          : x265 1.3+55-c21ddfe6a6d9e234:[Windows][GCC 4.8.3][64 bit]
Encoding settings                        : wpp / ctu=64 / tu-intra-depth=1 / tu-inter-depth=1 / me=1 / subme=2 / merange=57 / no-rect / no-amp / max-merge=2 / no-early-skip / no-fast-cbf / rdpenalty=0 / no-tskip / no-tskip-fast / strong-intra-smoothing / no-lossless / no-cu-lossless / no-constrained-intra / no-fast-intra / open-gop / interlace=0 / keyint=250 / min-keyint=25 / scenecut=40 / rc-lookahead=20 / bframes=4 / bframe-bias=0 / b-adapt=2 / ref=3 / weightp / no-weightb / aq-mode=2 / aq-strength=1.00 / cbqpoffs=0 / crqpoffs=0 / rd=3 / psy-rd=0.00 / psy-rdoq=0.00 / signhide / lft / sao / sao-lcu-bounds=0 / sao-lcu-opt=1 / b-pyramid / cutree / rc=crf / crf=28.0 / qcomp=0.60 / qpmin=0 / qpmax=51 / qpstep=4 / ipratio=1.40 / pbratio=1.30
Language                                 : English

[ndjamena]

OK, I'll rephrase the question

ffmpeg.exe -i "D:\Torchwood (2006) - 01x01 - Everything Changes.mkv" -vf "scale=1280:720" -y -threads 2 -c:v libx265 -x265-params crf=28 -map 0:0 -map 0:1 -c:a libvo_aacenc -ac 2 "E:\Torchwood (2006) - 01x01 - Everything Changes.mp4"

What's more likely, that ffmpeg resized the interlaced frames in a really terrible way, or that the deinterlacing filter MPC-HC uses on 720i HEVC is shite?

[LMotlow]

Either we're not reading you correctly, or you need to rephrase the question again:

.... it was converted from a 1080p interlaced VC1 stream ...

......the deinterlacing filter MPC-HC uses on 720p........

Neither 1080p nor 720p are interlaced. Methinks the "p" indicates "progressive", does it not? Maybe you shouldn't be deinterlacing non-interlaced material.

Anyway, 1280x720 interlaced 29.97fps is invalid for BluRay/AVCHD unless you're making video for something other than established standards.

[ndjamena]

Sorry, I was lying in bed thinking the problem through when I realised I was adding the "p" in my head, so I rushed to my PC to check if I'd actually used it in the thread.

Anyway, according to someone on the MakeMKV forum "that new BD ripper" is using FFMPEG to recode the ripped MKVs to h265 mp4s, and apparently that's the command line he captured from the program (but according to the same guy, it needs DivX installed to convert anything, so I'm not sure what's going on there). So I thought I'd try the command line on something interlaced to see what would happen but both MPC-HC and Windows MP seem to be leaving interlacing lines behind during playback. Those lines aren't there if I play back the original. My usual workhorse, VLC won't play back h265 and I'm not sure how to select the MPC-HC deinterlacing settings.

I don't want to download the program to check if it changes the command line for interlaced material, but I did want to check how the posted command line would work with interlaced video and it doesn't look good at the moment. Does FFMPEG actually mess up interlaced resizing if not given the correct commands?

[poisondeathray]

I don't want to download the program to check if it changes the command line for interlaced material, but I did want to check how the posted command line would work with interlaced video and it doesn't look good at the moment. Does FFMPEG actually mess up interlaced resizing if not given the correct commands?

Yes, FFMpeg has interlaced scaling flag that is used with -vf scale, interl=1

eg
-vf scale=w=1280:h=720:interl=1

But another possible issue is interlaced VC-1 could not be handled by libav / ffmpeg until very recently. I think (not sure) ffmpeg might have the patches merged now