Final frame rate does not match metadata

General questions or discussion about HandBrake, Video and/or audio transcoding, trends etc.
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curiousMonkey
Posts: 7
Joined: Fri Sep 29, 2023 11:18 pm

Final frame rate does not match metadata

Post by curiousMonkey »

Description of problem or question:
I was trying to convert a DVD file to the original frame rate of 23.967 FPS.
When I view the output file format on my Mac Mini it shows that frame rate.
I see the same information in VLC when I play the file on my Mac. I am not sure if VLC is reporting live data or simply reading the file header.

However when I use my projector in my theater room I see the projector syncs at 60 Hz instead of 24.
The file seems to play fine but I would like to understand why the projector does not see 24 FPS.
Several other programs that I converted this evening are working just fine and show the expected frame rate.



Steps to reproduce the problem (If Applicable):




HandBrake version (e.g., 1.0.0):
1.7.2



Operating system and version (e.g., Ubuntu 16.04 LTS, macOS 10.13 High Sierra, Windows 10 Creators Update):
Mac OS Sonoma



HandBrake Activity Log ***required*** (see How-to get an activity log)
HandBrake Activity Log for Session: 2024-05-14T02:04:02Z
Handbrake Version: 1.7.2 (2023122400)
Sports Night S01E01.mkv
Preset: HQ DVD Non interlaced 24 FPS
[19:04:02] macgui: fr.handbrake.HandBrakeXPCService scanning specifically for title: 1
[19:04:02] CPU: Unknown
[19:04:02] - logical processor count: 8
[19:04:02] hb_scan: path=/Volumes/Media Files/#recycle/TV Shows/Sports Night/Sports Night S01E01.mkv, title_index=1
Input #0, matroska,webm, from '/Volumes/Media Files/#recycle/TV Shows/Sports Night/Sports Night S01E01.mkv':
Metadata:
title : Sports Night S1
encoder : libebml v1.3.4 + libmatroska v1.4.5
creation_time : 2017-05-31T02:32:37.000000Z
Duration: 00:22:23.49, start: 0.000000, bitrate: 5101 kb/s
Chapters:
Chapter #0:0: start 0.033367, end 1343.456000
Metadata:
title : Chapter 01
Stream #0:0(eng): Video: mpeg2video (Main), yuv420p(tv, top first), 720x480 [SAR 8:9 DAR 4:3], 29.97 fps, 29.97 tbr, 1k tbn
Metadata:
BPS : 4900253
BPS-eng : 4900253
DURATION : 00:22:23.425000000
DURATION-eng : 00:22:23.425000000
NUMBER_OF_FRAMES: 32942
NUMBER_OF_FRAMES-eng: 32942
NUMBER_OF_BYTES : 822890377
NUMBER_OF_BYTES-eng: 822890377
_STATISTICS_WRITING_APP: mkvmerge v12.0.0 ('Trust / Lust') 64bit
_STATISTICS_WRITING_APP-eng: mkvmerge v12.0.0 ('Trust / Lust') 64bit
_STATISTICS_WRITING_DATE_UTC: 2017-05-31 02:32:37
_STATISTICS_WRITING_DATE_UTC-eng: 2017-05-31 02:32:37
_STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Side data:
cpb: bitrate max/min/avg: 8000000/0/0 buffer size: 1835008 vbv_delay: N/A
Stream #0:1(eng): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s (default)
Metadata:
title : Stereo
BPS : 192000
BPS-eng : 192000
DURATION : 00:22:23.488000000
DURATION-eng : 00:22:23.488000000
NUMBER_OF_FRAMES: 41984
NUMBER_OF_FRAMES-eng: 41984
NUMBER_OF_BYTES : 32243712
NUMBER_OF_BYTES-eng: 32243712
_STATISTICS_WRITING_APP: mkvmerge v12.0.0 ('Trust / Lust') 64bit
_STATISTICS_WRITING_APP-eng: mkvmerge v12.0.0 ('Trust / Lust') 64bit
_STATISTICS_WRITING_DATE_UTC: 2017-05-31 02:32:37
_STATISTICS_WRITING_DATE_UTC-eng: 2017-05-31 02:32:37
_STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Stream #0:2(eng): Subtitle: dvd_subtitle, 720x480 (default)
Metadata:
BPS : 5002
BPS-eng : 5002
DURATION : 00:21:59.907000000
DURATION-eng : 00:21:59.907000000
NUMBER_OF_FRAMES: 543
NUMBER_OF_FRAMES-eng: 543
NUMBER_OF_BYTES : 825322
NUMBER_OF_BYTES-eng: 825322
_STATISTICS_WRITING_APP: mkvmerge v12.0.0 ('Trust / Lust') 64bit
_STATISTICS_WRITING_APP-eng: mkvmerge v12.0.0 ('Trust / Lust') 64bit
_STATISTICS_WRITING_DATE_UTC: 2017-05-31 02:32:37
_STATISTICS_WRITING_DATE_UTC-eng: 2017-05-31 02:32:37
_STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
[19:04:02] scan: decoding previews for title 1
[19:04:02] scan: audio 0x1: ac3, rate=48000Hz, bitrate=192000 English (AC3, 2.0 ch, 192 kbps)
[19:04:02] using bitstream PAR 8:9
[19:04:02] scan: 10 previews, 720x480, 23.976 fps, autocrop = 0/0/10/4, aspect 4:3, PAR 8:9, color profile: 6-1-6, chroma location: left
[19:04:03] libhb: scan thread found 1 valid title(s)
[19:04:03] macgui: fr.handbrake.HandBrakeXPCService scan done
[19:04:03] macgui: fr.handbrake.HandBrakeXPCService started encoding Sports Night S01E01.mkv
[19:04:03] macgui: fr.handbrake.HandBrakeXPCService with preset HQ DVD Non interlaced 24 FPS
[19:04:03] Starting work at: Mon May 13 19:04:03 2024

[19:04:03] 1 job(s) to process
[19:04:03] Starting Task: Encoding Pass
[19:04:03] work: skipping crop/scale filter
[19:04:03] work: only 1 chapter, disabling chapter markers
[19:04:03] job configuration:
[19:04:03] * source
[19:04:03] + /Volumes/Media Files/#recycle/TV Shows/Sports Night/Sports Night S01E01.mkv
[19:04:03] + title 1, chapter(s) 1 to 1
[19:04:03] + container: matroska,webm
[19:04:03] + data rate: 5101 kbps
[19:04:03] * destination
[19:04:03] + /Volumes/Media Files/Converted TV Shows/Sports Night S01E01.mkv
[19:04:03] + container: Matroska (libavformat)
[19:04:03] * video track
[19:04:03] + decoder: mpeg2video 8-bit (yuv420p)
[19:04:03] + filters
[19:04:03] + Comb Detect (mode=3:spatial-metric=2:motion-thresh=1:spatial-thresh=1:filter-mode=2:block-thresh=40:block-width=16:block-height=16)
[19:04:03] + Deinterlace (mode=35)
[19:04:03] + Framerate Shaper (mode=1:rate=27000000/1126125)
[19:04:03] + frame rate: 23.976 fps -> constant 23.976 fps
[19:04:03] + Format (format=p010le)
[19:04:03] + Output geometry
[19:04:03] + storage dimensions: 720 x 480
[19:04:03] + pixel aspect ratio: 8 : 9
[19:04:03] + display dimensions: 640 x 480
[19:04:03] + encoder: H.265 10-bit (VideoToolbox)
[19:04:03] + preset: quality
[19:04:03] + options: strong-intra-smoothing=0:rect=0:aq-mode=1:rd=4:psy-rd=0.75:psy-rdoq=4.0:rdoq-level=1:rskip=2
[19:04:03] + profile: main10
[19:04:03] + level: auto
[19:04:03] + quality: 75.00 (CQ)
[19:04:03] + color profile: 6-1-6
[19:04:03] + chroma location: left
[19:04:03] * subtitle track 1, English (VOBSUB) (track 0, id 0x2, Picture) -> Passthrough
[19:04:03] * audio track 1
[19:04:03] + decoder: English (AC3, 2.0 ch, 192 kbps) (track 1, id 0x1)
[19:04:03] + bitrate: 192 kbps, samplerate: 48000 Hz
[19:04:03] + AC3 Passthru
[19:04:03] sync: expecting 32211 video frames
[19:04:03] encvt_Init: encoding with constant quality 75.000000
[19:04:03] encvt_Init: com.apple.videotoolbox.videoencoder.ave.hevc
[19:04:03] sync: first pts video is 0
[19:04:03] sync: first pts audio 0x1 is 0
[19:04:03] sync: "Chapter 1" (1) at frame 2 time 3753
[19:04:03] sync: first pts subtitle 0x2 is 258300
[19:04:03] 5.455411s: Video -> Film
[19:04:03] 14.214000s: Film -> Video
[19:04:03] 14.463744s: Video -> Film
[19:04:03] 16.549999s: Film -> Video
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[19:04:15] 374.358093s: Video -> Film
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[19:04:16] 395.947235s: Video -> Film
[19:04:17] 416.348969s: Film -> Video
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[19:04:17] 428.060974s: Film -> Video
[19:04:17] 428.178406s: Video -> Film
[19:04:17] 433.099030s: Film -> Video
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[19:04:18] 441.616699s: Film -> Video
[19:04:18] 441.658386s: Video -> Film
[19:04:18] 462.127991s: Film -> Video
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[19:04:18] 464.029999s: Film -> Video
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[19:04:19] 473.455231s: Video -> Film
[19:04:19] 482.282013s: Film -> Video
[19:04:19] 482.365997s: Video -> Film
[19:04:19] 487.152985s: Film -> Video
[19:04:19] 487.303497s: Video -> Film
[19:04:19] 489.823029s: Film -> Video
[19:04:19] 489.939148s: Video -> Film
[19:04:20] 509.108978s: Film -> Video
[19:04:20] 509.259033s: Video -> Film
[19:04:20] 510.852814s: Film -> Video
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[19:04:20] 513.812988s: Film -> Video
[19:04:20] 513.963623s: Video -> Film
[19:04:20] 523.890015s: Film -> Video
[19:04:20] 523.972961s: Video -> Film
[19:04:20] 526.733582s: Film -> Video
[19:04:20] 526.775330s: Video -> Film
[19:04:21] 533.867004s: Film -> Video
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[19:04:21] 542.208008s: Film -> Video
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[19:04:22] 581.580994s: Film -> Video
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[19:04:27] 702.268005s: Film -> Video
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[19:04:36] 967.032959s: Film -> Video
[19:04:36] 967.316162s: Video -> Film
[19:04:36] 973.005005s: Film -> Video
[19:04:36] 973.420349s: Video -> Film
[19:04:37] 985.651001s: Film -> Video
[19:04:37] 985.840332s: Video -> Film
[19:04:37] 1004.716980s: Film -> Video
[19:04:37] 1004.758667s: Video -> Film
[19:04:38] 1012.777954s: Film -> Video
[19:04:38] 1013.000000s: Video -> Film
[19:04:38] 1013.912964s: Film -> Video
[19:04:38] 1014.001221s: Video -> Film
[19:04:38] 1032.899048s: Film -> Video
[19:04:38] 1032.986816s: Video -> Film
[19:04:38] 1033.232056s: Film -> Video
[19:04:38] 1033.486694s: Video -> Film
[19:04:39] 1047.579956s: Film -> Video
[19:04:39] 1047.667358s: Video -> Film
[19:04:39] 1049.248047s: Film -> Video
[19:04:39] 1049.335815s: Video -> Film
[19:04:39] 1053.264404s: Film -> Video
[19:04:39] 1053.306030s: Video -> Film
[19:04:39] 1065.664917s: Film -> Video
[19:04:39] 1065.819214s: Video -> Film
[19:04:40] 1084.750000s: Film -> Video
[19:04:40] 1084.903687s: Video -> Film
[19:04:40] 1087.319946s: Film -> Video
[19:04:40] 1087.439331s: Video -> Film
[19:04:40] 1088.865356s: Film -> Video
[19:04:40] 1088.906982s: Video -> Film
[19:04:40] 1090.989990s: Film -> Video
[19:04:40] 1091.143066s: Video -> Film
[19:04:40] 1094.727051s: Film -> Video
[19:04:40] 1094.879517s: Video -> Film
[19:04:41] 1117.083008s: Film -> Video
[19:04:41] 1117.267944s: Video -> Film
[19:04:44] 1184.884033s: Film -> Video
[19:04:44] 1185.202881s: Video -> Film
[19:04:44] 1186.452026s: Film -> Video
[19:04:44] 1186.671753s: Video -> Film
[19:04:44] 1195.460938s: Film -> Video
[19:04:44] 1195.582275s: Video -> Film
[19:04:44] 1200.499023s: Film -> Video
[19:04:44] 1200.615356s: Video -> Film
[19:04:45] 1213.479004s: Film -> Video
[19:04:45] 1213.628662s: Video -> Film
[19:04:45] 1228.494019s: Film -> Video
[19:04:45] 1228.612061s: Video -> Film
[19:04:46] 1240.438965s: Film -> Video
[19:04:46] 1247.895630s: Video -> Film
[19:04:47] 1264.630005s: Film -> Video
[19:04:47] 1264.712036s: Video -> Film
[19:04:47] 1268.306763s: Film -> Video
[19:04:47] 1268.348511s: Video -> Film
[19:04:47] 1269.768921s: Film -> Video
[19:04:47] 1269.883179s: Video -> Film
[19:04:47] 1275.673950s: Film -> Video
[19:04:47] 1275.796387s: Video -> Film
[19:04:48] 1313.545898s: Film -> Video
[19:04:49] 1340.894897s: Video -> Film
[19:04:49] reader: done. 1 scr changes
[19:04:49] 1341.640015s: Film -> Video
[19:04:49] 1341.887451s: Video -> Film
[19:04:49] work: average encoding speed for job is 705.811035 fps
[19:04:49] comb detect: heavy 1287 | light 530 | uncombed 31125 | total 32942
[19:04:49] vfr: 32211 frames output, 731 dropped and 0 duped for CFR/PFR
[19:04:49] vfr: lost time: 0 (0 frames)
[19:04:49] vfr: gained time: 0 (0 frames) (0 not accounted for)
[19:04:50] ac3-decoder done: 41984 frames, 0 decoder errors
[19:04:50] mpeg2video-decoder done: 32942 frames, 0 decoder errors
[19:04:50] sync: got 32942 frames, 32211 expected
[19:04:50] sync: framerate min 23.976 fps, max 52.174 fps, avg 24.521 fps
[19:04:50] mux: track 0, 32211 frames, 413467388 bytes, 2462.02 kbps, fifo 2048
[19:04:50] mux: track 1, 41984 frames, 32243712 bytes, 192.00 kbps, fifo 2048
[19:04:50] mux: track 2, 543 frames, 1818052 bytes, 10.83 kbps, fifo 32
[19:04:50] Finished work at: Mon May 13 19:04:50 2024

[19:04:50] libhb: work result = 0

Code: Select all

Please replace this text with the contents of your log file between the two code tags - OR -  provide a pastebin URL in place of these 3 lines.
If you are unable to do so, please state why so we can help you.
Lostless
Bright Spark User
Posts: 156
Joined: Thu May 24, 2007 7:55 pm

Re: Final frame rate does not match metadata

Post by Lostless »

handbrake does not do a true constant frame rate. It always uses a veritable rate to keep with its clock for syncing purposes. But we’re talking milliseconds and is not noticeable. Most Likely your projector sees this and uses 60 Hz As a safeguard with 2:3 pulldown. Also, it’s possible that your projector only sees 824 Hz signal from HDMI and not from a video file, And Will always display 60 Hz when playing directly from the projector.
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Ritsuka
HandBrake Team
Posts: 1674
Joined: Fri Jan 12, 2007 11:29 am

Re: Final frame rate does not match metadata

Post by Ritsuka »

From the log it seems your file switches from Video -> Film framerate and back a lot, and in the end it prints:
[19:04:50] sync: framerate min 23.976 fps, max 52.174 fps, avg 24.521 fps
User avatar
JohnAStebbins
HandBrake Team
Posts: 5736
Joined: Sat Feb 09, 2008 7:21 pm

Re: Final frame rate does not match metadata

Post by JohnAStebbins »

Ritsuka wrote: Wed May 15, 2024 5:32 am From the log it seems your file switches from Video -> Film framerate and back a lot
I've seen this on many DVD sources. The flip happens at scene changes. If you look at the timestamps associated with the log entries you'll see they happen in closely spaced pairs

Code: Select all

[19:04:05] 67.366997s: Film -> Video
[19:04:05] 67.616577s: Video -> Film
The time it is in "Video" mode is always some small fraction of a second.

There must have been some commonly used mastering software that did strange things with the soft telecine conversion. I never did any pixel peeping to see what these short video segments look like under a microscope. I just let HandBrake's VFR do it's thing and used the decomb filter with interlace detection just in case some frames needed cleaning up.
curiousMonkey
Posts: 7
Joined: Fri Sep 29, 2023 11:18 pm

Re: Final frame rate does not match metadata

Post by curiousMonkey »

Thanks for all the suggestions.

It turns out that the odd behavior was limited to the first few episodes of season 1. I switched to variable frame rate but still selected 23.976 FPS and everything seems to be recognized as 24 FPS now. There is still some occasional combing noise that appears for a split second but I think I can live with that.
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JohnAStebbins
HandBrake Team
Posts: 5736
Joined: Sat Feb 09, 2008 7:21 pm

Re: Final frame rate does not match metadata

Post by JohnAStebbins »

curiousMonkey wrote: Thu May 16, 2024 2:31 am There is still some occasional combing noise that appears for a split second but I think I can live with that.
The decomb filter with interlace detection should clean that up without affecting the progressive frames.
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