FFMPEG 混合为私有数据流，读取时可能无法识别

如何解决FFMPEG 混合为私有数据流，读取时可能无法识别

我遇到了带有 hevc 编解码器的 mkv，在尝试将其转换为 m3u8 或 mp4 时，我收到以下消息：

[mpegts @ 0x7f94de014600] 流 1，编解码器 flac，被混合为私有数据流，读取时可能无法识别。

我的ffmpeg参数有问题吗？

到 m3u8： #1 :

ffmpeg -i aaa.mkv -s 1920x1080 -codec copy -bsf:v hevc_mp4toannexb -start_number 0 -hls_time 10 -segment_time 10 -hls_list_size 0 -f hls aaa.m3u8

#2 :

ffmpeg -i aaa.mkv -s 1920x1080 -codec copy -c:v libx264 -bsf:v hevc_mp4toannexb -start_number 0 -hls_time 10 -segment_time 10 -hls_list_size 0 -f hls aaa.m3u8

到 mp4：

#1：

ffmpeg -i aaa.mkv -c copy ccc.mp4

#2 :

ffmpeg -y -i aaa.mkv -codec copy -strict -2 ccc.mp4

编辑： FFMPEG 转储：

ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with Apple clang version 12.0.0 (clang-1200.0.32.27)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.3.1_4 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0,matroska,webm,from 'aaa.mkv':
  Metadata:
    encoder         : libebml v1.3.4 + libmatroska v1.4.5
    creation_time   : 2016-12-20T17:13:09.000000Z
  Duration: 00:24:18.92,start: 0.000000,bitrate: 4395 kb/s
    Chapter #0:0: start 0.000000,end 96.096000
    Metadata:
      title           : CHAPTER00
    Chapter #0:1: start 96.096000,end 134.050000
    Metadata:
      title           : CHAPTER01
    Chapter #0:2: start 134.050000,end 224.099000
    Metadata:
      title           : CHAPTER02
    Chapter #0:3: start 224.099000,end 708.082000
    Metadata:
      title           : CHAPTER03
    Chapter #0:4: start 708.082000,end 1302.050000
    Metadata:
      title           : CHAPTER04
    Chapter #0:5: start 1302.050000,end 1392.015000
    Metadata:
      title           : CHAPTER05
    Chapter #0:6: start 1392.015000,end 1428.051000
    Metadata:
      title           : CHAPTER06
    Chapter #0:7: start 1428.051000,end 1458.920000
    Metadata:
      title           : CHAPTER07
    Stream #0:0(jpn): Video: hevc (Main 10),yuv420p10le(tv),1920x1080,SAR 1:1 DAR 16:9,23.98 fps,23.98 tbr,1k tbn,23.98 tbc (default)
    Metadata:
      BPS             : 3671317
      BPS-eng         : 3671317
      DURATION        : 00:24:18.916000000
      DURATION-eng    : 00:24:18.916000000
      NUMBER_OF_FRAMES: 34979
      NUMBER_OF_FRAMES-eng: 34979
      NUMBER_OF_BYTES : 669518018
      NUMBER_OF_BYTES-eng: 669518018
      _STATISTICS_WRITING_APP: mkvmerge v9.4.2 ('So High') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v9.4.2 ('So High') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2016-12-20 17:13:09
      _STATISTICS_WRITING_DATE_UTC-eng: 2016-12-20 17:13:09
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    Stream #0:1(jpn): Audio: flac,48000 Hz,stereo,s16 (default)
    Metadata:
      BPS             : 722497
      BPS-eng         : 722497
      DURATION        : 00:24:18.920000000
      DURATION-eng    : 00:24:18.920000000
      NUMBER_OF_FRAMES: 17097
      NUMBER_OF_FRAMES-eng: 17097
      NUMBER_OF_BYTES : 131758259
      NUMBER_OF_BYTES-eng: 131758259
      _STATISTICS_WRITING_APP: mkvmerge v9.4.2 ('So High') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v9.4.2 ('So High') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2016-12-20 17:13:09
      _STATISTICS_WRITING_DATE_UTC-eng: 2016-12-20 17:13:09
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Output #0,hls,to 'aaa.m3u8':
  Metadata:
    encoder         : Lavf58.45.100
    Chapter #0:0: start 0.000000,1920x1080 [SAR 1:1 DAR 16:9],q=2-31,90k tbn,s16 (default)
    Metadata:
      BPS             : 722497
      BPS-eng         : 722497
      DURATION        : 00:24:18.920000000
      DURATION-eng    : 00:24:18.920000000
      NUMBER_OF_FRAMES: 17097
      NUMBER_OF_FRAMES-eng: 17097
      NUMBER_OF_BYTES : 131758259
      NUMBER_OF_BYTES-eng: 131758259
      _STATISTICS_WRITING_APP: mkvmerge v9.4.2 ('So High') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v9.4.2 ('So High') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2016-12-20 17:13:09
      _STATISTICS_WRITING_DATE_UTC-eng: 2016-12-20 17:13:09
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop,[?] for help
[mpegts @ 0x7f8b8a020e00] Stream 1,codec flac,is muxed as a private data stream and may not be recognized upon reading.