[FFmpeg-user] Overlaying DVB subtitles in MPEG-TS using overlay filter

Sat Jan 19 18:33:28 CET 2013

Hello,

I have an MPEG-TS recording from a Humax PVR and I'm trying to overlay 
the DVB subtitle stream onto the video stream with the command:

C:\Videos> ffmpeg -report -i Suburgatory-20121110-1024.TS 
-filter_complex "[0:0][0:3]overlay" -sn Suburgatory-20121110-1024.mkv

The ffmpeg output contains (many) "sub2video: rectangle overflowing" 
warningsand consequently the video in the MKV is subtitle free.

The documentation suggests the above command should be sufficientbut the 
(trimmed) report below indicates otherwise. Any help would be very much 
appreciated.

Many thanks,
Stuart

The report contains:

ffmpeg version N-48459-g498e1c6 Copyright (c) 2000-2013 the FFmpeg 
developers
   built on Jan  4 2013 17:36:11 with gcc 4.7.2 (GCC)
   configuration: --disable-static --enable-shared --enable-gpl 
--enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib 
--enable-fontconfig --enable-frei0r --enable-gnutls --enable-libass 
--enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm 
--enable-libmp3lame --enable-libopencore-amrnb 
--enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus 
--enable-librtmp --enable-libschroedinger --enable-libtheora 
--enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc 
--enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs 
--enable-libxvid --enable-zlib
   libavutil      52. 13.100 / 52. 13.100
   libavcodec     54. 85.101 / 54. 85.101
   libavformat    54. 59.103 / 54. 59.103
   libavdevice    54.  3.102 / 54.  3.102
   libavfilter     3. 30.104 /  3. 30.104
   libswscale      2.  1.103 /  2.  1.103
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  2.100 / 52.  2.100

     Stream #0:0[0xb0a], 129, 1/90000: Video: mpeg2video (Main) 
([2][0][0][0] / 0x0002), yuv420p, 704x576 [SAR 16:11 DAR 16:9], 25 fps, 
25 tbr, 90k tbn, 50 tbc
     Stream #0:1[0xb0b](eng), 211, 1/90000: Audio: mp2 ([4][0][0][0] / 
0x0004), 48000 Hz, stereo, s16p, 192 kb/s
     Stream #0:2[0xb0d](eng), 0, 1/90000: Audio: mp3 ([4][0][0][0] / 
0x0004), 0 channels, s16p (visual impaired)
     Stream #0:3[0xb0c](eng), 0, 1/90000: Subtitle: dvb_subtitle 
([6][0][0][0] / 0x0006)

[buffer @ 000000000048cac0] Setting entry with key 'video_size' to value 
'704x576'
[buffer @ 000000000048cac0] Setting entry with key 'pix_fmt' to value '0'
[buffer @ 000000000048cac0] Setting entry with key 'time_base' to value 
'1/90000'
[buffer @ 000000000048cac0] Setting entry with key 'pixel_aspect' to 
value '16/11'
[buffer @ 000000000048cac0] Setting entry with key 'sws_param' to value 
'flags=2'
[buffer @ 000000000048cac0] Setting entry with key 'frame_rate' to value 
'25/1'
[graph 0 input from stream 0:0 @ 00000000004a5300] w:704 h:576 
pixfmt:yuv420p tb:1/90000 fr:25/1 sar:16/11 sws_param:flags=2
[mpegts @ 000000000056f880] sub2video: using 704x576 canvas
[buffer @ 000000000048c980] Setting entry with key 'video_size' to value 
'704x576'
[buffer @ 000000000048c980] Setting entry with key 'pix_fmt' to value '0'
[buffer @ 000000000048c980] Setting entry with key 'time_base' to value 
'1/90000'
[buffer @ 000000000048c980] Setting entry with key 'pixel_aspect' to 
value '0/1'
[buffer @ 000000000048c980] Setting entry with key 'sws_param' to value 
'flags=2'
[graph 0 input from stream 0:3 @ 00000000004a51e0] w:704 h:576 
pixfmt:yuv420p tb:1/90000 fr:0/1 sar:0/1 sws_param:flags=2
Successfully openened the file.
[scale @ 000000000048cd40] Setting 'w' to value '0'
[scale @ 000000000048cd40] Setting 'h' to value '0'
[auto-inserted scaler 0 @ 00000000004a5660] w:0 h:0 flags:'' interl:0
[Parsed_overlay_0 @ 00000000004a5280] auto-inserting filter 
'auto-inserted scaler 0' between the filter 'graph 0 input from stream 
0:3' and the filter 'Parsed_overlay_0'
[auto-inserted scaler 0 @ 00000000004a5660] w:704 h:576 fmt:yuv420p 
sar:0/1 -> w:704 h:576 fmt:yuva420p sar:0/1 flags:0x2
[Parsed_overlay_0 @ 00000000004a5280] main w:704 h:576 fmt:yuv420p 
overlay x:0 y:0 w:704 h:576 fmt:yuva420p
[abuffer @ 000000000048d060] Setting entry with key 'time_base' to value 
'1/48000'
[abuffer @ 000000000048d060] Setting entry with key 'sample_rate' to 
value '48000'
[abuffer @ 000000000048d060] Setting entry with key 'sample_fmt' to 
value 's16p'
[abuffer @ 000000000048d060] Setting entry with key 'channel_layout' to 
value '0x3'
[graph 1 input from stream 0:1 @ 00000000004a55e0] tb:1/48000 
samplefmt:s16p samplerate:48000 chlayout:0x3
[aformat @ 0000000000489620] Setting entry with key 'sample_fmts' to 
value 'fltp'
[audio format for output stream 0:1 @ 00000000004a3800] auto-inserting 
filter 'auto-inserted resampler 0' between the filter 'Parsed_anull_0' 
and the filter 'audio format for output stream 0:1'
[auto-inserted resampler 0 @ 00000000004a38a0] chl:stereo fmt:s16p 
r:48000Hz -> chl:stereo fmt:fltp r:48000Hz
[libx264 @ 00000000027acc00] using mv_range_thread = 40
[libx264 @ 00000000027acc00] using SAR=16/11
[libx264 @ 00000000027acc00] using cpu capabilities: MMX2 SSE2Fast SSSE3 
FastShuffle SSE4.2 AVX
[libx264 @ 00000000027acc00] profile High, level 3.0
[libx264 @ 00000000027acc00] 264 - core 129 r2230 1cffe9f - H.264/MPEG-4 
AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - 
options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 
psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 
8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 
lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 
bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 
b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 
keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf 
mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 
aq=1:1.00
[mpeg2video @ 000000000048e6c0] detected 4 logical cores
Output #0, matroska, to 'Suburgatory-20121110-1024.mkv':
   Metadata:
     encoder         : Lavf54.59.103
     Stream #0:0, 0, 1/1000: Video: h264, yuv420p, 704x576 [SAR 16:11 
DAR 16:9], q=-1--1, 1k tbn, 25 tbc
     Stream #0:1(eng), 0, 1/1000: Audio: vorbis, 48000 Hz, stereo, fltp
Stream mapping:
   Stream #0:0 (mpeg2video) -> overlay:main (graph 0)
   Stream #0:3 (dvbsub) -> overlay:overlay (graph 0)
   overlay (graph 0) -> Stream #0:0 (libx264)
   Stream #0:1 -> #0:1 (mp2 -> libvorbis)
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