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• Trying to convert a VideoCD MPEG to MP4 using ffmpeg

  27 février 2023, par Niels Bosma

  I'm trying to convert a VideoCD MPEG to MP4 using :

  


  FFMPEG 5.1

  


  ffmpeg.exe -nostdin -y -loglevel info -hide_banner -i "ITEM0010.DAT" -c:v libx264 -crf 18 -qscale:v 3  -c:a aac -ar 96000 -map_metadata -1 "output.mp4"


  


  I'm getting :

  


  [mpeg @ 0000024b81bf4480] start time for stream 1 is not set in estimate_timings_from_pts
[mpeg @ 0000024b81bf4480] stream 1 : no TS found at start of file, duration not set
[mpeg @ 0000024b81bf4480] Could not find codec parameters for stream 1 (Audio: mp2, 0 channels, s16p): unspecified frame size
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, mpeg, from 'C:\Concierge\ITEM0010.DAT':
  Stream #0:1[0x1c0]: Audio: mp2, 0 channels, s16p
  Stream #0:2[0x1e2]: Video: mpeg1video, yuv420p(tv), 704x576 [SAR 178:163 DAR 1958:1467], 1100 kb/s, 25 tbr, 90k tbn
Stream mapping:
  Stream #0:2 -> #0:0 (mpeg1video (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (mp2 (native) -> aac (native))
[libx264 @ 0000024b81c86000] -qscale is ignored, -crf is recommended.
[libx264 @ 0000024b81c86000] using SAR=178/163
[libx264 @ 0000024b81c86000] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0000024b81c86000] profile High, level 3.0, 4:2:0, 8-bit
[libx264 @ 0000024b81c86000] 264 - core 164 r3095 baee400 - H.264/MPEG-4 AVC codec - Copyleft 2003-2022 - 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=18 lookahead_threads=3 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=18.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[abuffer @ 0000024b84979880] Value inf for parameter 'time_base' out of range [0 - 2.14748e+09]
    Last message repeated 1 times
[abuffer @ 0000024b84979880] Error setting option time_base to value 1/0.
[graph_1_in_0_1 @ 0000024b85187c00] Error applying options to the filter.
Error reinitializing filters!
Error while filtering: Result too large
Finishing stream 0:1 without any data written to it.
[abuffer @ 0000024b84979880] Value inf for parameter 'time_base' out of range [0 - 2.14748e+09]
    Last message repeated 1 times
[abuffer @ 0000024b84979880] Error setting option time_base to value 1/0.
[graph_1_in_0_1 @ 0000024b85186b00] Error applying options to the filter.
Error configuring filter graph
[libx264 @ 0000024b81c86000] frame I:1     Avg QP:22.68  size: 40674
[libx264 @ 0000024b81c86000] mb I  I16..4:  3.8% 72.3% 23.9%
[libx264 @ 0000024b81c86000] 8x8 transform intra:72.3%
[libx264 @ 0000024b81c86000] coded y,uvDC,uvAC intra: 88.4% 81.1% 50.3%
[libx264 @ 0000024b81c86000] i16 v,h,dc,p: 43% 13%  0% 43%
[libx264 @ 0000024b81c86000] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 16% 20%  5%  5%  6%  5%  7%  6%
[libx264 @ 0000024b81c86000] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 33% 20%  8%  5%  9%  8%  8%  6%  4%
[libx264 @ 0000024b81c86000] i8c dc,h,v,p: 42% 23% 28%  7%
[libx264 @ 0000024b


  


  81c86000] kb/s:8134.80
Conversion failed !

  


  The same command using FFMPEG 4.1 works fine.

  


• FFMPEG/AVCONV Video flipping is taking long time, How can we reduce the process time ?

  10 juillet 2014, par Prasanth P

  I am trying to flip video using FFMPEG/AVCONV on Ubuntu. When it flips 1 minute video, it takes 12 to 40 seconds for processing and conversion.

  ffmpeg is deprecated and avconv is being using instead.

  Video file size : 7mb, Duration : 1 minute

  avconv -i 1_1.mp4 -c:v libx264 -c:a copy -vf "vflip" conv.mp4

  and the result is :

  avconv version 0.8.12-4:0.8.12-0ubuntu0.12.04.1, Copyright (c) 2000-2014 the Libav developers
  
    built on Jun 10 2014 15:32:44 with gcc 4.6.3
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1_1.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: mp42mp41
  
      creation_time   : 2013-06-06 07:42:07
  
    Duration: 00:03:45.15, start: 0.000000, bitrate: 266 kb/s
  
      Stream #0.0(eng): Video: h264 (High), yuv420p, 640x360 [PAR 1:1 DAR 16:9], 216 kb/s, 25 fps, 25 tbr, 25k tbn, 50 tbc
  
      Metadata:
  
        creation_time   : 2013-06-06 07:42:07
  
      Stream #0.1(eng): Audio: aac, 32000 Hz, mono, s16, 46 kb/s
  
      Metadata:
  
        creation_time   : 2013-06-06 07:42:07
  
  [buffer @ 0x972c240] w:640 h:360 pixfmt:yuv420p
  
  [libx264 @ 0x9745e20] using SAR=1/1
  
  [libx264 @ 0x9745e20] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
  
  [libx264 @ 0x9745e20] profile Main, level 3.0
  
  [libx264 @ 0x9745e20] 264 - core 120 r2151 a3f4407 - H.264/MPEG-4 AVC codec - Copyleft 2003-2011 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=0 b_adapt=1 b_bias=0 direct=1 weightb=0 open_gop=1 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=1.25 aq=1:1.00
  
  Output #0, mp4, to 'conv.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: mp42mp41
  
      creation_time   : 2013-06-06 07:42:07
  
      encoder         : Lavf53.21.1
  
      Stream #0.0(eng): Video: libx264, yuv420p, 640x360 [PAR 1:1 DAR 16:9], q=-1--1, 25 tbn, 25 tbc
  
      Metadata:
  
        creation_time   : 2013-06-06 07:42:07
  
      Stream #0.1(eng): Audio: libvo_aacenc, 32000 Hz, mono, 46 kb/s
  
      Metadata:
  
        creation_time   : 2013-06-06 07:42:07
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 -> libx264)
  
    Stream #0:1 -> #0:1 (copy)
  
  Press ctrl-c to stop encoding
  
  frame= 5627 fps=153 q=-1.0 Lsize=    7880kB time=225.04 bitrate= 286.9kbits/s    
  
  video:6487kB audio:1271kB global headers:0kB muxing overhead 1.580010%
  
  [libx264 @ 0x9745e20] frame I:27    Avg QP:15.59  size: 19598
  
  [libx264 @ 0x9745e20] frame P:1478  Avg QP:20.11  size:  3175
  
  [libx264 @ 0x9745e20] frame B:4122  Avg QP:29.13  size:   344
  
  [libx264 @ 0x9745e20] consecutive B-frames:  1.9%  0.5%  2.1% 95.5%
  
  [libx264 @ 0x9745e20] mb I  I16..4: 20.1%  0.0% 79.9%
  
  [libx264 @ 0x9745e20] mb P  I16..4:  1.2%  0.0%  1.7%  P16..4: 23.9% 12.3%  5.6%  0.0%  0.0%    skip:55.2%
  
  [libx264 @ 0x9745e20] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8: 18.4%  2.3%  0.2%  direct: 0.3%  skip:78.8%  L0:41.7% L1:51.7% BI: 6.6%
  
  [libx264 @ 0x9745e20] coded y,uvDC,uvAC intra: 64.4% 44.0% 15.7% inter: 4.3% 4.8% 0.2%
  
  [libx264 @ 0x9745e20] i16 v,h,dc,p: 40% 19% 13% 28%
  
  [libx264 @ 0x9745e20] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 22% 17%  5%  7%  6%  6%  5%  4%
  
  [libx264 @ 0x9745e20] i8c dc,h,v,p: 65% 13% 19%  3%
  
  [libx264 @ 0x9745e20] Weighted P-Frames: Y:1.9% UV:1.2%
  
  [libx264 @ 0x9745e20] ref P L0: 72.8%  7.2% 13.5%  6.4%  0.0%
  
  [libx264 @ 0x9745e20] ref B L0: 91.2%  8.8%
  
  [libx264 @ 0x9745e20] kb/s:236.07

  And time taken is 13 seconds.

• Add SRT subtitle to video with ffmpeg

  3 juillet 2015, par jAckOdE

  I use ffmpeg to encode, and add subtitle to a video by following command

  $ ffmpeg -i hifi.avi -i hifi.srt -acodec libfaac -ar 48000 -ab 128k -ac 2 -vcodec libx264 -vpre ipod640 -s 480x240 -b 256k -scodec copy  hifi.m4v -newsubtitle

  Here is the output

  ffmpeg version 0.8.git, Copyright (c) 2000-2011 the FFmpeg developers
  
    built on Aug  4 2011 11:11:39 with gcc 4.5.2
  
    configuration: --extra-cflags=-I/usr/local/include --extra-ldflags=-L/usr/local/lib --disable-shared --enable-static --enable-gpl --enable-postproc --enable-pthreads --enable-ffplay --disable-ffserver --enable-memalign-hack --enable-nonfree --enable-libfaac --arch=x86 --enable-swscale --enable-libx264 --enable-avfilter --enable-debug=3
  
    libavutil    51. 11. 1 / 51. 11. 1
  
    libavcodec   53.  9. 1 / 53.  9. 1
  
    libavformat  53.  6. 0 / 53.  6. 0
  
    libavdevice  53.  2. 0 / 53.  2. 0
  
    libavfilter   2. 27. 5 /  2. 27. 5
  
    libswscale    2.  0. 0 /  2.  0. 0
  
    libpostproc  51.  2. 0 / 51.  2. 0
  
  Input #0, avi, from 'hifi.avi':
  
    Metadata:
  
      encoder         : VirtualDubMod 1.5.4.1 (build 2178/release)
  
      IAS1            : English
  
    Duration: 01:49:02.20, start: 0.000000, bitrate: 897 kb/s
  
      Stream #0.0: Video: mpeg4 (Simple Profile), yuv420p, 544x304 [SAR 1:1 DAR 34:19], 25 tbr, 25 tbn, 25 tbc
  
      Stream #0.1: Audio: mp3, 48000 Hz, stereo, s16, 32 kb/s
  
  [srt @ 0152c100] Estimating duration from bitrate, this may be inaccurate
  
  Input #1, srt, from 'hifi.srt':
  
    Duration: N/A, start: 56.080000, bitrate: N/A
  
      Stream #1.0: Subtitle: srt
  
  File 'hifi.m4v' already exists. Overwrite ? [y/N] y
  
  [buffer @ 02548920] w:544 h:304 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param:
  
  [scale @ 02558ee0] w:544 h:304 fmt:yuv420p -> w:480 h:240 fmt:yuv420p flags:0x4
  
  [libx264 @ 02547f20] Default settings detected, using medium profile
  
  [libx264 @ 02547f20] using SAR=1/1
  
  [libx264 @ 02547f20] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.1 Cache64
  
  [libx264 @ 02547f20] profile High, level 3.0
  
  [libx264 @ 02547f20] 264 - core 115 - H.264/MPEG-4 AVC codec - Copyleft 2003-2011 - 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=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=0 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=256 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=10000 vbv_bufsize=10000 nal_hrd=none ip_ratio=1.40 aq=1:1.00
  
  Output #0, ipod, to 'hifi.m4v':
  
      Stream #0.0: Video: libx264, yuv420p, 480x240 [SAR 1:1 DAR 2:1], q=2-31, 256 kb/s, 90k tbn, 25 tbc
  
      Stream #0.1: Audio: libfaac, 48000 Hz, 2 channels, s16, 128 kb/s
  
      Stream #0.2: Subtitle: srt
  
      Stream #0.3: Subtitle: [0][0][0][0] / 0x0000, 64 kb/s
  
  Stream mapping:
  
    Stream #0.0 -> #0.0
  
    Stream #0.1 -> #0.1
  
    Stream #1.0 -> #0.2
  
    Stream #1.0 -> #0.3
  
  Encoder (codec id 0) not found for output stream #0.3

  can anyone tell what wrong with my command ??

  thanks,