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PGS subtitles, HW transcoding, Source Media Issue

rotational467

By rotational467
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rotational467

rotational467   31

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Posted (edited)

I've run across (and posted once or twice in the Roku area about this) apparently "random" TV episodes that I have personally ripped and encoded from the blu-ray, where Emby cannot do a hardware transcode for playback when the PGS subtitle track is enabled.  I've finally had time to do dig out the original blu-ray to validate whether there is some defect in my encoded version.

I identified an episode that failed to xcode in HW and displays the following in the ffmpeg log: 

>>>>>>  Subtitle Processing Steps for [0:2]: HDMV PGS subtitles
        Step                    Format             Target Size 
        HDMV_PGS_SUBTITLE    >> Subs: Bitmap                   
        scale                >> Video: UNKNOWN     1920x1080   
...
11:24:00.581 [matroska,webm @ 0xe35ac0] Could not find codec parameters for stream 2 (Subtitle: hdmv_pgs_subtitle (pgssub)): unspecified size
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
11:24:00.581 Input #0, matroska,webm, from '/share/Video/TV/Archer (2009)/Season 02/Archer (2009) - S02E01 - Swiss Miss.mkv':
11:24:00.581   Metadata:
11:24:00.581     title           : ARCHER SEASON 2 - DISC 1
11:24:00.581     creation_time   : 2019-12-27T05:43:27.000000Z
11:24:00.581     ENCODER         : Lavf58.20.100
11:24:00.581   Duration: 00:21:03.44, start: 0.000000, bitrate: 6649 kb/s
11:24:00.581   Stream #0:0: Video: hevc (Main), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], Level 120, 23.98 fps, 23.98 tbr, 1k tbn (default)
11:24:00.582     Metadata:
11:24:00.582       DURATION        : 00:21:03.429000000
11:24:00.582   Stream #0:1(eng): Audio: dts (DTS-HD MA), 48000 Hz, 5.1(side), s32p (24 bit) (default)
11:24:00.582     Metadata:
11:24:00.582       title           : Surround
11:24:00.582       DURATION        : 00:21:03.435000000
11:24:00.582   Stream #0:2(eng): Subtitle: hdmv_pgs_subtitle
11:24:00.582     Metadata:
11:24:00.582       DURATION        : 00:21:01.281000000
11:24:00.597 Stream mapping:
11:24:00.597   Stream #0:0 (hevc) -> overlay (graph 0)
11:24:00.597   Stream #0:2 (pgssub) -> scale:default (graph 0)
11:24:00.597   hwupload:default (graph 0) -> Stream #0:0 (h264_vaapi)
11:24:00.597   Stream #0:1 -> #0:1 (dts (dca) -> mp3 (libmp3lame))
11:24:00.597 Press [q] to stop, [?] for help
11:24:00.944 subtitle_kickoff: call subtitle_resend_current 5057 frame->format: 1
11:24:00.945 subtitle input filter: decoding size 0x0
11:24:00.945 Auto-inserting subfeed filter
11:24:00.945 Auto-inserting graphicsub2video filter
11:24:00.969 Output #0, segment, to '/scratch/embytemp/transcoding-temp/DC840A/DC840A_%d.ts':
11:24:00.969   Metadata:
11:24:00.969     encoder         : Lavf59.17.100
11:24:00.969   Stream #0:0: Video: h264 (High), vaapi(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 13299 kb/s, Level 40, 23.98 fps, 90k tbn
11:24:00.969     Metadata:
11:24:00.969       encoder         : Lavc59.21.100 h264_vaapi
11:24:00.969   Stream #0:1(eng): Audio: mp3, 48000 Hz, stereo, fltp, 192 kb/s (default)
11:24:00.969     Metadata:
11:24:00.969       encoder         : Lavc59.21.100 libmp3lame
11:24:00.980 elapsed=00:00:00.34 frame=    2 fps=0.0 q=-0.0 size=N/A time=00:00:01.79 bitrate=N/A throttle=off speed=5.17x    
11:24:01.219 subtitle input filter: decoding size 1920x1080
11:24:01.219 Auto-inserting subfeed filter
11:24:01.219 Auto-inserting graphicsub2video filter
11:24:01.220 Impossible to convert between the formats supported by the filter 'hwupload@f4' and the filter 'auto_scale_0'
11:24:01.220 Error reinitializing filters!
11:24:01.220 Failed to inject frame into filter network: Function not implemented
11:24:01.220 Error while processing the decoded data for stream #0:2
11:24:01.222 [libmp3lame @ 0xe9b440] 3 frames left in the queue on closing
11:24:01.225 Conversion failed!

Compared to an episode that xcodes in HW properly: 

>>>>>>  Subtitle Processing Steps for [0:2]: HDMV PGS subtitles
        Step                    Format             Target Size 
        HDMV_PGS_SUBTITLE    >> Subs: Bitmap       1920x1080   
        scale                >> Video: UNKNOWN     1920x-2
...
11:27:42.355 Input #0, matroska,webm, from '/share/Video/TV/Archer (2009)/Season 02/Archer (2009) - S02E03 - Blood Test.mkv':
11:27:42.355   Metadata:
11:27:42.355     title           : ARCHER SEASON 2 - DISC 1
11:27:42.355     creation_time   : 2019-12-27T06:09:10.000000Z
11:27:42.355     ENCODER         : Lavf58.20.100
11:27:42.355   Duration: 00:21:16.58, start: 0.000000, bitrate: 4813 kb/s
11:27:42.356   Stream #0:0: Video: hevc (Main), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], Level 120, 23.98 fps, 23.98 tbr, 1k tbn (default)
11:27:42.356     Metadata:
11:27:42.356       DURATION        : 00:21:16.567000000
11:27:42.356   Stream #0:1(eng): Audio: dts (DTS-HD MA), 48000 Hz, 5.1(side), s32p (24 bit) (default)
11:27:42.356     Metadata:
11:27:42.356       title           : Surround
11:27:42.356       DURATION        : 00:21:16.576000000
11:27:42.356   Stream #0:2(eng): Subtitle: hdmv_pgs_subtitle, 1920x1080, Start-Time 3.420s
11:27:42.356     Metadata:
11:27:42.356       DURATION        : 00:21:14.544000000
11:27:42.375 Stream mapping:
11:27:42.375   Stream #0:0 (hevc) -> overlay (graph 0)
11:27:42.375   Stream #0:2 (pgssub) -> scale:default (graph 0)
11:27:42.375   hwupload:default (graph 0) -> Stream #0:0 (h264_vaapi)
11:27:42.375   Stream #0:1 -> #0:1 (dts (dca) -> mp3 (libmp3lame))
11:27:42.375 Press [q] to stop, [?] for help
11:27:42.745 subtitle input filter: decoding size 1920x1080
11:27:42.745 Auto-inserting subfeed filter
11:27:42.745 Auto-inserting graphicsub2video filter
11:27:42.769 Output #0, segment, to '/scratch/embytemp/transcoding-temp/6CD0C8/6CD0C8_%d.ts':
11:27:42.769   Metadata:
11:27:42.769     encoder         : Lavf59.17.100
11:27:42.769   Stream #0:0: Video: h264 (High), vaapi(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 9626 kb/s, Level 40, 23.98 fps, 90k tbn
11:27:42.769     Metadata:
11:27:42.769       encoder         : Lavc59.21.100 h264_vaapi
11:27:42.769   Stream #0:1(eng): Audio: mp3, 48000 Hz, stereo, fltp, 192 kb/s (default)
11:27:42.769     Metadata:
11:27:42.769       encoder         : Lavc59.21.100 libmp3lame
11:27:42.770 elapsed=00:00:00.36 frame=    1 fps=0.0 q=0.0 size=N/A time=00:00:00.00 bitrate=N/A throttle=off speed=   0x    
11:27:43.198 [segment @ 0xda4780] Opening '/scratch/embytemp/transcoding-temp/6CD0C8/6CD0C8.m3u8.tmp' for writing

Note that these two episodes were from the same disc and ripped/transcoded using identical commands, software versions, etc. via a batch script.  So, how can the subtitle metadata for one have gotten corrupted/lost and not the other?  It didn't.  I re-ripped the failing episode using MakeMKV without any modifications and swapped it in place: 

>>>>>>  Subtitle Processing Steps for [0:2]: HDMV PGS subtitles
        Step                    Format             Target Size 
        HDMV_PGS_SUBTITLE    >> Subs: Bitmap                   
        scale                >> Video: UNKNOWN     1920x1080
...
11:39:46.983 [matroska,webm @ 0x7d9ac0] Could not find codec parameters for stream 2 (Subtitle: hdmv_pgs_subtitle (pgssub)): unspecified size
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
11:39:47.017 Input #0, matroska,webm, from '/share/Video/TV/Archer (2009)/Season 02/s02e01.mkv':
11:39:47.017   Metadata:
11:39:47.017     title           : ARCHER SEASON 2 - DISC 1
11:39:47.017     encoder         : libmakemkv v1.17.2 (1.3.10/1.5.2) win(x64-release)
11:39:47.017     creation_time   : 2022-11-12T16:31:22.000000Z
11:39:47.017   Duration: 00:21:03.43, start: 0.000000, bitrate: 28728 kb/s
11:39:47.017   Stream #0:0(eng): Video: h264 (High), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], Level 41, 23.98 fps, 23.98 tbr, 1k tbn
11:39:47.017     Metadata:
11:39:47.017       BPS-eng         : 24403287
11:39:47.017       DURATION-eng    : 00:21:03.428833333
11:39:47.017       NUMBER_OF_FRAMES-eng: 30292
11:39:47.017       NUMBER_OF_BYTES-eng: 3853974619
11:39:47.017       SOURCE_ID-eng   : 001011
11:39:47.017   Stream #0:1(eng): Audio: dts (DTS-HD MA), 48000 Hz, 5.1(side), s32p (24 bit) (default)
11:39:47.017     Metadata:
11:39:47.017       title           : Surround 5.1
11:39:47.017       BPS-eng         : 4257095
11:39:47.017       DURATION-eng    : 00:21:03.434666666
11:39:47.017       NUMBER_OF_FRAMES-eng: 118447
11:39:47.017       NUMBER_OF_BYTES-eng: 672319952
11:39:47.018       SOURCE_ID-eng   : 001100
11:39:47.018   Stream #0:2(eng): Subtitle: hdmv_pgs_subtitle
11:39:47.018     Metadata:
11:39:47.018       BPS-eng         : 65252
11:39:47.018       DURATION-eng    : 00:20:56.234145833
11:39:47.018       NUMBER_OF_FRAMES-eng: 888
11:39:47.018       NUMBER_OF_BYTES-eng: 10246614
11:39:47.018       SOURCE_ID-eng   : 001200
11:39:47.037 Stream mapping:
11:39:47.037   Stream #0:0 (h264) -> overlay (graph 0)
11:39:47.037   Stream #0:2 (pgssub) -> scale:default (graph 0)
11:39:47.037   hwupload:default (graph 0) -> Stream #0:0 (h264_vaapi)
11:39:47.037   Stream #0:1 -> #0:1 (dts (dca) -> mp3 (libmp3lame))
11:39:47.038 Press [q] to stop, [?] for help
11:39:47.300 subtitle_kickoff: call subtitle_resend_current 5057 frame->format: 1
11:39:47.301 subtitle input filter: decoding size 0x0
11:39:47.301 Auto-inserting subfeed filter
11:39:47.301 Auto-inserting graphicsub2video filter
11:39:47.325 Output #0, segment, to '/scratch/embytemp/transcoding-temp/A6B9A8/A6B9A8_%d.ts':
11:39:47.325   Metadata:
11:39:47.325     encoder         : Lavf59.17.100
11:39:47.325   Stream #0:0: Video: h264 (High), vaapi(progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 28728 kb/s, Level 41, 23.98 fps, 90k tbn
11:39:47.325     Metadata:
11:39:47.325       encoder         : Lavc59.21.100 h264_vaapi
11:39:47.325   Stream #0:1(eng): Audio: mp3, 48000 Hz, stereo, fltp, 192 kb/s (default)
11:39:47.325     Metadata:
11:39:47.325       encoder         : Lavc59.21.100 libmp3lame
11:39:47.340 elapsed=00:00:00.26 frame=    2 fps=0.0 q=-0.0 size=N/A time=00:00:02.03 bitrate=N/A throttle=off speed=7.74x    
11:39:47.528 subtitle input filter: decoding size 1920x1080
11:39:47.528 Auto-inserting subfeed filter
11:39:47.528 Auto-inserting graphicsub2video filter
11:39:47.529 Impossible to convert between the formats supported by the filter 'hwupload@f4' and the filter 'auto_scale_0'
11:39:47.529 Error reinitializing filters!
11:39:47.529 Failed to inject frame into filter network: Function not implemented
11:39:47.529 Error while processing the decoded data for stream #0:2
11:39:47.534 [libmp3lame @ 0x8ff380] 3 frames left in the queue on closing
11:39:47.535 Conversion failed!

So - the source itself has what is apparently incorrect and/or missing subtitle track metadata.  I re-ripped the working example episode as well to confirm.  Note that none of the tools I normally use (primarily MediaInfo, MKVToolNix) expose this information about the subtitle tracks as far as I can tell, so I'm not sure even how to identify a problematic file besides seeing if Emby pukes and falls back to SW.  The original disc plays without issue, and the file I transcoded from the source rip will play with subs enabled in Kodi, VLC, and MPC-BE without a problem, and prior when I was on Plex it was able to transcode these w/subs without a problem.

Is the source itself actually out-of-spec?  Is this an ffmpeg issue, or an issue with the command used to locate/examine the subtitle track?  I've run across incidences of this specific problem in a few different shows and movies I've personally ripped (Archer, Futurama, The Venture Bros, The Running Man, more).  If this is an issue of specification/standards enforcement (i.e. "yeah it can work that way, but it's out of spec so we're failing it"), I'd ask that the issue be re-examined, as it's apparently a common enough thing in the available source media that I've tripped over it multiple times across multiple shows and movies in my relatively small library.

ffmpeg logs and mediainfo reports for the files are attached.  If there's further info I could gather in order to determine definitively what's going on and whether it's addressable I'm happy to do so.

Thanks!

archer_s02e01_br_source.html bad_subs_encoded_ffmpeg-transcode-c853a7c1-ca06-4c2f-8d8e-ac3e617f44bf_1.txt bad_subs_source_ffmpeg-transcode-90cd65e4-b7eb-496d-ac0b-6049aab86897_1.txt good_subs_encoded_ffmpeg-transcode-4f28ce54-3508-4a03-9415-f755f50d7514_1.txt

Edited by rotational467
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