Transcoding fails with invalid subtitle streams

July 6, 2015

Hello Devs.

I dont know if this is an issue of FFMPEG, Emby or just corrupt media file.

The following transcoding log is showing a problem with a file on my server, which can not be transcoded possibly due to a corrupt subtitle stream inside the container. Anyway, the file is playing fine in all my players. (KODI, VLC, MCE and Windows Media Player)

TranscodeLog:

http://192.168.178.2:8096/mediabrowser/videos/a646f47a54d33537fb1f261c443a0a8d/hlsdynamic/main/0.ts?DeviceId=3f5269186c1d08f47927b78aaece5613cc2fb6e0&MediaSourceId=a646f47a54d33537fb1f261c443a0a8d&VideoCodec=h264&AudioCodec=aac&AudioStreamIndex=1&SubtitleStreamIndex=3&VideoBitrate=872000&AudioBitrate=128000&MaxAudioChannels=6&MaxHeight=480&Level=41&ClientTime=635717250026354616&Profile=high&PlaySessionId=47fb3e77517441a595c84d7fe49f8ca5&api_key=287b8323cd9f4b0095f6cf0359468814

{"Protocol":"File","Id":"a646f47a54d33537fb1f261c443a0a8d","Path":"\\\\SERVER\\H\\Serien_2\\Game Of Thrones\\Staffel 5\\tvp-got-s05e03.mkv","Type":"Default","Container":"mkv","Name":"1080P/H264/AC3","RunTimeTicks":35928640000,"ReadAtNativeFramerate":false,"SupportsTranscoding":true,"SupportsDirectStream":true,"SupportsDirectPlay":true,"RequiresOpening":false,"RequiresClosing":false,"VideoType":"VideoFile","MediaStreams":[{"Codec":"h264","Language":"ger","IsInterlaced":false,"BitRate":11762983,"BitDepth":8,"RefFrames":4,"IsDefault":true,"IsForced":true,"Height":1072,"Width":1920,"AverageFrameRate":25,"RealFrameRate":25,"Profile":"High","Type":"Video","AspectRatio":"16:9","Index":0,"IsExternal":false,"IsTextSubtitleStream":false,"SupportsExternalStream":false,"PixelFormat":"yuv420p","Level":41,"IsAnamorphic":false,"IsCabac":true},{"Codec":"ac3","Language":"ger","IsInterlaced":false,"ChannelLayout":"5.1","BitRate":384000,"Channels":6,"SampleRate":48000,"IsDefault":true,"IsForced":true,"Type":"Audio","Index":1,"IsExternal":false,"IsTextSubtitleStream":false,"SupportsExternalStream":false,"Level":0},{"Codec":"ac3","Language":"eng","IsInterlaced":false,"ChannelLayout":"5.1","BitRate":384000,"Channels":6,"SampleRate":48000,"IsDefault":false,"IsForced":false,"Type":"Audio","Index":2,"IsExternal":false,"IsTextSubtitleStream":false,"SupportsExternalStream":false,"Level":0},{"Codec":"srt","Language":"ger","IsInterlaced":false,"IsDefault":true,"IsForced":true,"Type":"Subtitle","Index":3,"IsExternal":false,"IsTextSubtitleStream":true,"SupportsExternalStream":false,"Level":0}],"PlayableStreamFileNames":[],"Formats":["mkv","webm"],"Bitrate":11762983,"RequiredHttpHeaders":{}}

C:\Users\Tranquil\AppData\Roaming\MediaBrowser-Server\ffmpeg\20150331\ffmpeg.exe -i file:"\\SERVER\H\Serien_2\Game Of Thrones\Staffel 5\tvp-got-s05e03.mkv" -map_metadata -1 -threads 0 -map 0:0 -map 0:1 -codec:v:0 libx264 -pix_fmt yuv420p -preset superfast -crf 23 -maxrate 872000 -bufsize 1744000 -vsync vfr -profile:v high -level 41 -force_key_frames expr:gte(t,n_forced*3) -vf "scale=min(iw\,720):trunc(ow/dar/2)*2,subtitles='//SERVER/H/Serien_2/Game Of Thrones/Staffel 5/tvp-got-s05e03.mkv:si=0',setpts=PTS -0/TB" -flags +loop-global_header -sc_threshold 0 -codec:a:0 aac -strict experimental -ac 6 -ab 128000 -af "adelay=1,aresample=async=1,asetpts=PTS-0/TB" -hls_time 3 -start_number 0 -hls_list_size 0 -y "F:\temp\transcoding-temp\c3fe2f3f6a38ad80fcc13af4f8acbc27.m3u8"

built with gcc 4.9.2 (GCC)

configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib

libavutil 54. 21.100 / 54. 21.100

libavcodec 56. 32.100 / 56. 32.100

libavformat 56. 27.100 / 56. 27.100

libavdevice 56. 4.100 / 56. 4.100

libavfilter 5. 13.101 / 5. 13.101

libswscale 3. 1.101 / 3. 1.101

libswresample 1. 1.100 / 1. 1.100

libpostproc 53. 3.100 / 53. 3.100

Input #0, matroska,webm, from 'file:\\SERVER\H\Serien_2\Game Of Thrones\Staffel 5\tvp-got-s05e03.mkv':

Metadata:

title : Game.of.Thrones.S05E03.Der.Hohe.Spatz.GERMAN.DL.DUBBED.1080p.HDTV.x264-TVP

encoder : libebml v1.2.2 + libmatroska v1.3.0

creation_time : 2015-05-11 21:33:10

Duration: 00:59:52.86, start: 0.000000, bitrate: 11762 kb/s

Stream #0:0(ger): Video: h264 (High), yuv420p(tv, bt709/unknown/unknown), 1920x1072, SAR 1:1 DAR 120:67, 25 fps, 25 tbr, 1k tbn, 47.95 tbc (default) (forced)

Metadata:

title : tvp-got-s05e03-1080p

Stream #0:1(ger): Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s (default) (forced)

Stream #0:2(eng): Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s

Stream #0:3(ger): Subtitle: subrip (default) (forced)

Metadata:

title : Forced.Sub

[srt @ 04f62900] Invalid UTF-8 in decoded subtitles text; maybe missing -sub_charenc option