How can I know if my video has closed captioning using ffmpeg or ffprobe? Thank you
----- Original Message ----- From: "Marcelo Boufleur" <[email protected]> To: "FFmpeg user questions" <[email protected]> Sent: Wednesday, September 14, 2016 6:24:52 PM Subject: Re: [FFmpeg-user] Mpg > > But i got error > bad option 'ac53' '1' > Ahh, nothing like actually trying the command. The "a53cc" option has to be used outside the internal parameters of x264. ffmpeg -i INPUT.mpg -c:v libx264 -x264opts keyint=123:min-keyint=20 -a53cc 1 -an -f mpegts OUTPUT.ts Here is a (working and tested) command line version, and the full command output: C:\>ffmpeg -i cea708_dtv.mpg -c:v libx264 -x264opts keyint=60:min-keyint=30 -a53cc 1 -an -f mpegts OUTPUT.TS ffmpeg version N-80980-g7af44ce Copyright (c) 2000-2016 the FFmpeg developers built with gcc 5.4.0 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-libebur128 --enable-fontconfig --enable-fre i0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libc aca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enab le-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-li bopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspee x --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvor bis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable- libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib libavutil 55. 28.100 / 55. 28.100 libavcodec 57. 50.100 / 57. 50.100 libavformat 57. 41.100 / 57. 41.100 libavdevice 57. 0.102 / 57. 0.102 libavfilter 6. 47.100 / 6. 47.100 libswscale 4. 1.100 / 4. 1.100 libswresample 2. 1.100 / 2. 1.100 libpostproc 54. 0.100 / 54. 0.100 Input #0, mpegts, from 'cea708_dtv.mpg': Duration: 00:00:05.01, start: 0.300911, bitrate: 6482 kb/s Program 1 Stream #0:0[0x1e1]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, smpte170m), 720x480 [SAR 8:9 DAR 4:3], Closed Captions, 6000 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc Stream #0:1[0x1e2]: Audio: mp2 ([3][0][0][0] / 0x0003), 44100 Hz, stereo, s16p, 256 kb/s [libx264 @ 00000000023c42a0] using SAR=8/9 [libx264 @ 00000000023c42a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX [libx264 @ 00000000023c42a0] profile High, level 3.0 [mpegts @ 00000000024c64c0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead. Output #0, mpegts, to 'OUTPUT.TS': Metadata: encoder : Lavf57.41.100 Stream #0:0: Video: h264 (libx264), yuv420p, 720x480 [SAR 8:9 DAR 4:3], q=-1--1, 29.97 fps, 90ktbn, 29.97 tbc Metadata: encoder : Lavc57.50.100 libx264 Side data: cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1 Stream mapping: Stream #0:0 -> #0:0 (mpeg2video (native) -> h264 (libx264)) Press [q] to stop, [?] for help frame= 150 fps= 25 q=-1.0 Lsize= 4690kB time=00:00:04.90 bitrate=7833.2kbits/s speed=0.804x video:4333kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 8.248154% [libx264 @ 00000000023c42a0] frame I:3 Avg QP:25.11 size: 57332 [libx264 @ 00000000023c42a0] frame P:48 Avg QP:27.88 size: 45895 [libx264 @ 00000000023c42a0] frame B:99 Avg QP:31.95 size: 20826 [libx264 @ 00000000023c42a0] consecutive B-frames: 2.0% 5.3% 74.0% 18.7% [libx264 @ 00000000023c42a0] mb I I16..4: 5.7% 92.6% 1.7% [libx264 @ 00000000023c42a0] mb P I16..4: 1.7% 25.7% 2.0% P16..4: 22.2% 26.0% 16.3% 0.0% 0.0% skip: 6.0% [libx264 @ 00000000023c42a0] mb B I16..4: 0.2% 3.3% 0.0% B16..8: 41.2% 16.8% 7.4% direct:17.1% skip:14.0% L0:31.4% L1:30.1% BI:38.6% [libx264 @ 00000000023c42a0] 8x8 transform intra:89.0% inter:80.4% [libx264 @ 00000000023c42a0] coded y,uvDC,uvAC intra: 84.5% 81.6% 37.1% inter: 60.5% 46.5% 26.3% [libx264 @ 00000000023c42a0] i16 v,h,dc,p: 16% 41% 33% 10% [libx264 @ 00000000023c42a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 16% 23% 38% 3% 2% 2% 4% 3% 8% [libx264 @ 00000000023c42a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 25% 14% 5% 5% 3% 12% 4% 20% [libx264 @ 00000000023c42a0] i8c dc,h,v,p: 51% 23% 20% 6% [libx264 @ 00000000023c42a0] Weighted P-Frames: Y:0.0% UV:0.0% [libx264 @ 00000000023c42a0] ref P L0: 54.4% 11.4% 21.2% 13.0% [libx264 @ 00000000023c42a0] ref B L0: 80.8% 16.4% 2.8% [libx264 @ 00000000023c42a0] ref B L1: 99.1% 0.9% [libx264 @ 00000000023c42a0] kb/s:7091.63 And here is the ffmpeg command informing about the resulting file: C:\>ffmpeg -i OUTPUT.TS ffmpeg version N-80980-g7af44ce Copyright (c) 2000-2016 the FFmpeg developers built with gcc 5.4.0 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-libebur128 --enable-fontconfig --enable-fre i0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libc aca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enab le-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-li bopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspee x --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvor bis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable- libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib libavutil 55. 28.100 / 55. 28.100 libavcodec 57. 50.100 / 57. 50.100 libavformat 57. 41.100 / 57. 41.100 libavdevice 57. 0.102 / 57. 0.102 libavfilter 6. 47.100 / 6. 47.100 libswscale 4. 1.100 / 4. 1.100 libswresample 2. 1.100 / 2. 1.100 libpostproc 54. 0.100 / 54. 0.100 Input #0, mpegts, from 'OUTPUT.TS': Duration: 00:00:05.01, start: 1.466733, bitrate: 7676 kb/s Program 1 Metadata: service_name : Service01 service_provider: FFmpeg Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 720x480 [SAR 8:9 DAR 4:3], Closed Captions, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc I'm attaching a report from Media info from the input and output vídeos, just to compare how the Closed Caption is recognized: General ID : 1 (0x1) Complete name : C:\cea708_dtv.mpg Format : MPEG-TS File size : 3.87 MiB Duration : 4s 979ms Overall bit rate mode : Constant Overall bit rate : 6 500 Kbps Video ID : 481 (0x1E1) Menu ID : 1 (0x1) Format : MPEG Video Format version : Version 2 Format profile : Main@Main Format settings, BVOP : Yes Format settings, Matrix : Default Format settings, GOP : M=3, N=15 Codec ID : 2 Duration : 5s 5ms Bit rate : 5 921 Kbps Maximum bit rate : 6 000 Kbps Width : 720 pixels Height : 480 pixels Display aspect ratio : 4:3 Frame rate : 29.970 (30000/1001) fps Standard : NTSC Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Compression mode : Lossy Bits/(Pixel*Frame) : 0.572 Time code of first frame : 00:00:00:01 Time code source : Group of pictures header GOP, Open/Closed : Open GOP, Open/Closed of first frame : Closed Stream size : 3.53 MiB (91%) Color primaries : BT.601 NTSC Transfer characteristics : BT.601 Matrix coefficients : BT.601 Audio ID : 482 (0x1E2) Menu ID : 1 (0x1) Format : MPEG Audio Format version : Version 1 Format profile : Layer 2 Codec ID : 3 Duration : 496ms Bit rate mode : Constant Bit rate : 256 Kbps Channel(s) : 2 channels Sampling rate : 44.1 KHz Compression mode : Lossy Stream size : 15.5 KiB (0%) Text ID : 481 (0x1E1)-1 Menu ID : 1 (0x1) Format : EIA-608 Muxing mode : A/53 / DTVCC Transport Muxing mode, more info : Muxed in Video #1 Duration : 5s 5ms Bit rate mode : Constant Stream size : 0.00 Byte (0%) And here is the a report from OUTPUT.ts: General ID : 1 (0x1) Complete name : C:\OUTPUT.TS Format : MPEG-TS File size : 4.58 MiB Duration : 4s 938ms Overall bit rate mode : Variable Overall bit rate : 7 718 Kbps Video ID : 256 (0x100) Menu ID : 1 (0x1) Format : AVC Format/Info : Advanced Video Codec Format profile : High@L3 Format settings, CABAC : Yes Format settings, ReFrames : 4 frames Codec ID : 27 Duration : 5s 5ms Bit rate : 7 337 Kbps Width : 720 pixels Height : 480 pixels Display aspect ratio : 4:3 Frame rate mode : Variable Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Stream size : 4.38 MiB (96%) Writing library : x264 core 148 r2705 3f5ed56 Encoding settings : 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=60 / keyint_min=30 / 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 Text ID : 256 (0x100)-1 Menu ID : 1 (0x1) Format : EIA-608 Muxing mode : SCTE 128 / DTVCC Transport Muxing mode, more info : Muxed in Video #1 Duration : 5s 5ms Bit rate mode : Constant Stream size : 0.00 Byte (0%) Menu ID : 4096 (0x1000) Menu ID : 1 (0x1) Duration : 4s 938ms List : 256 (0x100) (AVC) Service name : Service01 Service provider : FFmpeg Service type : digital television 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