Hello everyone, first poster, long time searcher. I have run into an issue converting a large collection of old snowboarding videos from mkv to mp4 recently. I am currently using MakeMKV to extract the main title file from the DVDs and running them through Hybrid. I read the info section about what's asked when reporting a problem and I apologize in advance, I do not have a script of the settings I used in hybrid (could not figure out how to produce it). I can only post a short clip of one of the chapters I encoded from the mkv to show what I am talking about. Searched all the boards here for this issue and nothing really comes up.
My problem is this: the attached video stutters after encoding in certain sections. I compared it to the mkv file and the mkv does not do this. I deinterlaced using Avisynth QTGMC bob x64 in Hybrid with KNLmeans default, QTGMC slower preset. x264 very slow preset, CRF 19, scaled up to 1440x1080. Output is x264 mp4, 59.94fps, 1440x1080 aac audio. I tried this with different audio outputs because I thought it might have something to do with matching the audio to the video but it all produced the same results. The only thing I haven't tried is keeping the fps the same as the input but I've not had this issue going from interlaced to progressive with other interlaced videos. Hybrid tells me the original file is bottom field first and ffprobe confirms this so I left that setting alone as well.
If you go to about 20 seconds in, you can see what I am talking about.
My question would be is there a setting in the filters or frame settings that I need to toggle to eliminate this problem?
You could cut the mkv with mkvtoolnix gui and share a small sample which allows reproducing the problem.
Without having a sample of the source and no debug output of what Hybrid analyzed and used, I can only guess:
If your source was flagged with the wrong field order, you could overwrite the field order to the correct value.
If the source is mixed content (mix of interlaced (tff, bff) and maybe telecined and progressive) depending on source Hybrid can't really help and a custom script would be needed.
Cu Selur
Not sure why I'm having issues attaching files directly to this board but here's another Vimeo link to the original chapter from the MKV that was tested. Used mkvtoolnix to clip it.
Also included the ffprobe text file.
Code:
Last login: Tue Jul 9 12:17:42 on ttys000
richmadrid@Richs-MacBook-Air ~ % cd downloads
richmadrid@Richs-MacBook-Air downloads % ffprobe -i b1_t00.mkv
ffprobe version 7.0.1 Copyright (c) 2007-2024 the FFmpeg developers
built with Apple clang version 15.0.0 (clang-1500.1.0.2.5)
configuration: --prefix=/usr/local/Cellar/ffmpeg/7.0.1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox
libavutil 59. 8.100 / 59. 8.100
libavcodec 61. 3.100 / 61. 3.100
libavformat 61. 1.100 / 61. 1.100
libavdevice 61. 1.100 / 61. 1.100
libavfilter 10. 1.100 / 10. 1.100
libswscale 8. 1.100 / 8. 1.100
libswresample 5. 1.100 / 5. 1.100
libpostproc 58. 1.100 / 58. 1.100
Input #0, matroska,webm, from 'b1_t00.mkv':
Metadata:
encoder : libmakemkv v1.17.7 (1.3.10/1.5.2) win(x64-release)
creation_time : 2024-07-10T03:35:24.000000Z
Duration: 00:41:20.64, start: 0.000000, bitrate: 7389 kb/s
Chapters:
Chapter #0:0: start 0.000000, end 169.369200
Metadata:
title : Chapter 01
Chapter #0:1: start 169.369200, end 354.554200
Metadata:
title : Chapter 02
Chapter #0:2: start 354.554200, end 509.308800
Metadata:
title : Chapter 03
Chapter #0:3: start 509.308800, end 619.819200
Metadata:
title : Chapter 04
Chapter #0:4: start 619.819200, end 697.496800
Metadata:
title : Chapter 05
Chapter #0:5: start 697.496800, end 804.403600
Metadata:
title : Chapter 06
Chapter #0:6: start 804.403600, end 944.143200
Metadata:
title : Chapter 07
Chapter #0:7: start 944.143200, end 1059.458400
Metadata:
title : Chapter 08
Chapter #0:8: start 1059.458400, end 1167.766600
Metadata:
title : Chapter 09
Chapter #0:9: start 1167.766600, end 1319.117800
Metadata:
title : Chapter 10
Chapter #0:10: start 1319.117800, end 1428.226800
Metadata:
title : Chapter 11
Chapter #0:11: start 1428.226800, end 1512.911400
Metadata:
title : Chapter 12
Chapter #0:12: start 1512.911400, end 1595.594000
Metadata:
title : Chapter 13
Chapter #0:13: start 1595.594000, end 1648.046400
Metadata:
title : Chapter 14
Chapter #0:14: start 1648.046400, end 1807.405600
Metadata:
title : Chapter 15
Chapter #0:15: start 1807.405600, end 1914.913000
Metadata:
title : Chapter 16
Chapter #0:16: start 1914.913000, end 2010.808800
Metadata:
title : Chapter 17
Chapter #0:17: start 2010.808800, end 2217.615400
Metadata:
title : Chapter 18
Chapter #0:18: start 2217.615400, end 2480.644833
Metadata:
title : Chapter 19
Stream #0:0(eng): Video: mpeg2video (Main), yuv420p(tv, bottom first), 704x480 [SAR 10:11 DAR 4:3], 7000 kb/s, 29.97 fps, 29.97 tbr, 1k tbn
Metadata:
BPS-eng : 6999957
DURATION-eng : 00:41:20.644833333
NUMBER_OF_FRAMES-eng: 74345
NUMBER_OF_BYTES-eng: 2170550421
SOURCE_ID-eng : 0100E0
_STATISTICS_WRITING_APP-eng: MakeMKV v1.17.7 win(x64-release)
_STATISTICS_WRITING_DATE_UTC-eng: 2024-07-10 03:35:24
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES SOURCE_ID
Side data:
cpb: bitrate max/min/avg: 7000000/0/0 buffer size: 1835008 vbv_delay: N/A
Stream #0:1(eng): Audio: ac3, 48000 Hz, stereo, fltp, 384 kb/s (default)
Metadata:
title : Stereo
BPS-eng : 384000
DURATION-eng : 00:41:20.672000000
NUMBER_OF_FRAMES-eng: 77521
NUMBER_OF_BYTES-eng: 119072256
SOURCE_ID-eng : 0180BD
_STATISTICS_WRITING_APP-eng: MakeMKV v1.17.7 win(x64-release)
_STATISTICS_WRITING_DATE_UTC-eng: 2024-07-10 03:35:24
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES SOURCE_ID
You can't attach huge files here.
You need to upload it somewhere, where you can share a link.
Going to bed now.
Cu Selur
I got it to work. ran through the deinterlacing settings (qtgmc avisynth) in preview mode and figured out the bob setting, when checked, was causing it. not sure why as I had 2 other encodes after it on the same bob setting that didn't produce that result.
Bob requires a correct field order.
If the field order changes somewhere in the stream (or was wrongly selected), bob will cause stuttering.
Cu Selur