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• Frozen images at the beginning of a mts to mp4 conversion

  26 novembre 2019, par nounou

  I am trying to convert a file h264 mpegts to h264 mp4.

  ffmpeg.exe -i input.mts -f mp4 -vf "scale=512:384 " -c:a aac -b:a 64k  -c:v libx264   -pix_fmt yuv420p -movflags faststart -map 0:v -map 0:a  -y  output.mp4

  This conversion produces an output file longer than the input file and the image freezes (around 1 second) at startup, but there is already sound
  After about 1 second the picture and sound are synchronous.
  I have these messages before transcoding :

  ffmpeg version git-2019-11-13-a7245ad Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 9.2.1 (GCC) 20191010
  
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libo
  
  pencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-lib
  
  webp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enab
  
  le-libxvid --enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  
    libavutil      56. 35.101 / 56. 35.101
  
    libavcodec     58. 62.100 / 58. 62.100
  
    libavformat    58. 35.100 / 58. 35.100
  
    libavdevice    58.  9.100 / 58.  9.100
  
    libavfilter     7. 66.100 /  7. 66.100
  
    libswscale      5.  6.100 /  5.  6.100
  
    libswresample   3.  6.100 /  3.  6.100
  
    libpostproc    55.  6.100 / 55.  6.100
  
  [mp3float @ 00000000003f63c0] Header missing
  
  [h264 @ 00000000003f5300] SPS unavailable in decode_picture_timing
  
  [h264 @ 00000000003f5300] non-existing PPS 0 referenced
  
  [h264 @ 00000000003f5300] SPS unavailable in decode_picture_timing
  
  [h264 @ 00000000003f5300] non-existing PPS 0 referenced
  
  [h264 @ 00000000003f5300] decode_slice_header error
  
  [h264 @ 00000000003f5300] no frame!
  
  [h264 @ 00000000003f5300] SPS unavailable in decode_picture_timing
  
  [h264 @ 00000000003f5300] non-existing PPS 0 referenced
  
  [h264 @ 00000000003f5300] SPS unavailable in decode_picture_timing
  
  -----
  
  [h264 @ 00000000003f5300] SPS unavailable in decode_picture_timing
  
  [h264 @ 00000000003f5300] non-existing PPS 0 referenced
  
  [h264 @ 00000000003f5300] decode_slice_header error
  
  [h264 @ 00000000003f5300] no frame!
  
  [mpegts @ 00000000003f1500] start time for stream 0 is not set in estimate_timings_from_pts
  
  [mpegts @ 00000000003f1500] PES packet size mismatch
  
  ---
  
  Press [q] to stop, [?] for help
  
  [mp2 @ 0000000003b1e500] Header missing
  
  Error while decoding stream #0:2: Invalid data found when processing input
  
  [libx264 @ 0000000002b200c0] using SAR=4/3
  
  [libx264 @ 0000000002b200c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0000000002b200c0] profile High, level 2.1, 4:2:0, 8-bit
  
  [libx264 @ 0000000002b200c0] 264 - core 158 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x1
  
   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=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interl
  
  =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 qc
  
  tio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'c:\temp\output.mp4':
  
    Metadata:
  
      encoder         : Lavf58.35.100
  
      Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 512x384 [SAR 4:3 DAR 16:9], q=-1--1, 25 fps, 12800 tbn, 25 tbc
  
      Metadata:
  
        encoder         : Lavc58.62.100 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
  
      Stream #0:1(fre): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 64 kb/s
  
      Metadata:
  
        encoder         : Lavc58.62.100 aac
  
  c:\temp\input.MTS: corrupt decoded frame in stream 10:10.56 bitrate= 198.6kbits/s dup=42 drop=0 speed=7.03x
  
  [mp4 @ 0000000002a16d40] Starting second pass: moving the moov atom to the beginning of the filespeed=7.12x
  
  frame=  750 fps=175 q=-1.0 Lsize=    1806kB time=00:00:30.01 bitrate= 492.8kbits/s dup=42 drop=0 speed=   7x
  
  video:1546kB audio:236kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.326814%

  If I try to cut the first 3 seconds on the source file.

   ffmpeg.exe -ss 3 -i input.mts -f mpegts -c:v copy -c:a copy -map v -map a input_ss3.mts

  Then redo the conversion h264 mpegts to h264 mp4
  I have the same result.

  For the moment, in order to have an output file without frozen images at the beginning ; i need to do the following :

  I have to extract the video and sound, look for the delay betwen video and sound, cutting sound at the begining of audio file,
  concatenate the audio file et the video file, then convert to h264 - mp4.

  ffmpeg.exe -ss xx -i input.mts  -f mpegts -c:a copy -vn audio.mts
  
  ffmpeg.exe -i input.mts  -f mpegts -c:v copy -an video.mts
  
  ffmpeg.exe -i audio.mst -i video.mts   -f mpegts  -c:v copy -c:a copy -map 1:v -map 0:a  new_input.mts
  
  ffmpeg.exe -i new_input.mts -f mp4 -vf "scale=512:384 " -c:a aac -b:a 64k  -c:v libx264   -pix_fmt yuv420p -movflags faststart -map 0:v -map 0:a  output.mp4

  Can you tell me if there is a way to fix the source file or if there is another way to do it ?

  Maybe I should cut my source file to the first intra image and do the conversion afterwards.

  ffmpeg.exe input.mts -ss first_intra_frame  -f mpegts -c:v copy -c:a copy -map v -map a:0 new_input.mts
  
  ffmpeg.exe -i new_input.mts -f mp4 -vf "scale=512:384 " -c:a aac -b:a 64k  -c:v libx264   -pix_fmt yuv420p -movflags faststart -map 0:v -map 0:a  output.mp4

  But I have to find the exact position of the first intra frame.

  I try with the command :

  ffmpeg.exe -skip_frame nokey -i input.mts -t 10  -vf showinfo -vsync 0 -f null -

  But, I get "pts_time" which does not seem to match the position in "seconds.milliseconds" of the first intra frame.

  I try with the command :

  ffprobe.exe  input.mts -show_frames  -select_streams v:0  -show_entries frame=pkt_pts,pkt_pts_time,pkt_dts,pkt_dts_time,pkt_pos,coded_picture_number,pict_type > input.txt

  I also do not find the position of the first intra frame.

  Could you help me to find the exact position in "seconds.milliseconds" of the firsts intra frames ?

• I want the mp4 file shooting date to be the xml file name

  21 novembre 2019, par re6

  In Windows 10 environment, I would like to change the name of both “file with extension mp4” and “file with extension xml” to the shooting date of mp4 file.

  C0001.MP4
  
  C0001M01.XML
  
  C0002.MP4
  
  C0002M01.XML

  Specifically, I want to change the file name as follows.

  2019-10-23_13-10-32.MP4
  
  2019-10-23_13-10-32.XML
  
  2019-10-23_13-10-49.MP4
  
  2019-10-23_13-10-49.XML

  ---

  I tried to think that using the ext option would give me the expected result, but I didn’t get the expected result.

  First time

  C:\Users\user>exiftool "-FileNamehoge/C0001M01.XML
  
  Warning: No writable tags set from C:/hoge/C0001M01.XML
  
  Warning: [minor] Error 3 placing ::NonRealTimeMetaAudioFormatAudioRecPortTrackDst in structure or list - C:/hoge/C0002M01.XML
  
  Warning: No writable tags set from C:/hoge/C0002M01.XML
  
      1 directories scanned
  
      0 image files updated
  
      2 image files unchanged

  Second time

  C:\Users\user>exiftool "-FileNamehoge/C0001.MP4
  
  Warning: [minor] Error 3 placing ::NonRealTimeMetaLtcChangeTableLtcChangeStatus in structure or list - C:/hoge/C0001M01.XML
  
  Warning: No writable tags set from C:/hoge/C0001M01.XML
  
  Warning: [minor] The ExtractEmbedded option may find more tags in the movie data - C:/hoge/C0002.MP4
  
  Warning: [minor] Error 3 placing ::NonRealTimeMetaAudioFormatAudioRecPortPort in structure or list - C:/hoge/C0002M01.XML
  
  Warning: No writable tags set from C:/hoge/C0002M01.XML
  
      1 directories scanned
  
      2 image files updated
  
      2 image files unchanged

• amix filter is causing audio to disappear

  21 novembre 2019, par Mason

  I’m trying overlay audio onto a video. I have a very simple ffmpeg command (auido.mp3 is much longer than the video)

  ffmpeg -i video.mp4 -i audio.mp3 -filter_complex "[0:a] [1:a] amix=duration=shortest [a]" -map 0:v -map [a] test.mp4

  This produces a silent video. However, when not mapping the video stream

  ffmpeg -i video.mp4 -i audio.mp3 -filter_complex "[0:a] [1:a] amix=duration=shortest [a]" -map [a] test.mp4

  The resulting audio file is as expected.

  What could be causing this issues ?

  (Is there a better way to overlay audio onto a video via ffmpeg ?)

  Edit : log

  ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 9.1.1 (GCC) 20190807
  
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
  
    libavutil      56. 31.100 / 56. 31.100
  
    libavcodec     58. 54.100 / 58. 54.100
  
    libavformat    58. 29.100 / 58. 29.100
  
    libavdevice    58.  8.100 / 58.  8.100
  
    libavfilter     7. 57.100 /  7. 57.100
  
    libswscale      5.  5.100 /  5.  5.100
  
    libswresample   3.  5.100 /  3.  5.100
  
    libpostproc    55.  5.100 / 55.  5.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: mp42mp41
  
      creation_time   : 2019-11-15T05:28:05.000000Z
  
    Duration: 00:00:00.53, start: 0.000000, bitrate: 9463 kb/s
  
      Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 9546 kb/s, 30 fps, 30 tbr, 30k tbn, 60 tbc (default)
  
      Metadata:
  
        creation_time   : 2019-11-15T05:28:05.000000Z
  
        handler_name    : ?Mainconcept Video Media Handler
  
        encoder         : AVC Coding
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 317 kb/s (default)
  
      Metadata:
  
        creation_time   : 2019-11-15T05:28:05.000000Z
  
        handler_name    : #Mainconcept MP4 Sound Media Handler
  
  [mp3 @ 000001fdf5f7f040] Estimating duration from bitrate, this may be inaccurate
  
  Input #1, mp3, from 'audio.mp3':
  
    Metadata:
  
      date            : 2019-11-14 23:31
  
      id3v2_priv.XMP  : &lt;?xpacket begin="\xef\xbb\xbf" id="W5M0MpCehiHzreSzNTczkc9d"?>\x0a\x0a \x0a  <rdf 256="256" kb="kb"></rdf>s
  
      Stream #1:0: Audio: mp3, 44100 Hz, stereo, fltp, 256 kb/s
  
  Stream mapping:
  
    Stream #0:1 (aac) -> amix:input0 (graph 0)
  
    Stream #1:0 (mp3float) -> amix:input1 (graph 0)
  
    Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
    amix (graph 0) -> Stream #0:1 (aac)
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 000001fdf64ab700] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
  
  [libx264 @ 000001fdf64ab700] profile High, level 4.0, 4:2:0, 8-bit
  
  [libx264 @ 000001fdf64ab700] 264 - core 158 r2984 3759fcb - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - 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
  
  Output #0, mp4, to 'test.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: mp42mp41
  
      encoder         : Lavf58.29.100
  
      Stream #0:0(eng): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
  
      Metadata:
  
        creation_time   : 2019-11-15T05:28:05.000000Z
  
        handler_name    : ?Mainconcept Video Media Handler
  
        encoder         : Lavc58.54.100 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
      Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
  
      Metadata:
  
        encoder         : Lavc58.54.100 aac
  
  frame=   15 fps=0.0 q=-1.0 Lsize=     695kB time=00:00:00.40 bitrate=14232.7kbits/s speed=0.437x    
  
  video:693kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.226150%
  
  [libx264 @ 000001fdf64ab700] frame I:1     Avg QP:30.52  size:101545
  
  [libx264 @ 000001fdf64ab700] frame P:7     Avg QP:28.22  size: 44755
  
  [libx264 @ 000001fdf64ab700] frame B:7     Avg QP:30.76  size: 42074
  
  [libx264 @ 000001fdf64ab700] consecutive B-frames: 20.0% 40.0% 40.0%  0.0%
  
  [libx264 @ 000001fdf64ab700] mb I  I16..4: 68.3% 10.5% 21.2%
  
  [libx264 @ 000001fdf64ab700] mb P  I16..4: 17.6%  4.8%  4.3%  P16..4: 28.5%  4.5%  2.8%  0.0%  0.0%    skip:37.6%
  
  [libx264 @ 000001fdf64ab700] mb B  I16..4: 17.6%  2.4%  1.3%  B16..8: 37.9%  6.7%  1.3%  direct: 4.9%  skip:27.8%  L0:40.5% L1:54.3% BI: 5.2%
  
  [libx264 @ 000001fdf64ab700] 8x8 transform intra:13.9% inter:59.5%
  
  [libx264 @ 000001fdf64ab700] coded y,uvDC,uvAC intra: 54.5% 53.3% 42.3% inter: 15.3% 27.8% 21.6%
  
  [libx264 @ 000001fdf64ab700] i16 v,h,dc,p:  5% 88%  5%  2%
  
  [libx264 @ 000001fdf64ab700] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 53% 29%  1%  1%  1%  2%  1%  2%
  
  [libx264 @ 000001fdf64ab700] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu:  6% 80%  9%  1%  1%  0%  1%  0%  2%
  
  [libx264 @ 000001fdf64ab700] i8c dc,h,v,p: 16% 80%  3%  1%
  
  [libx264 @ 000001fdf64ab700] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 000001fdf64ab700] ref P L0: 40.3%  4.9% 11.0% 43.8%
  
  [libx264 @ 000001fdf64ab700] ref B L0: 80.0% 11.1%  8.9%
  
  [libx264 @ 000001fdf64ab700] kb/s:11349.57
  
  [aac @ 000001fdf64ac600] Qavg: 41522.195