当我使用ffmpeg将一些纯音频flv文件转码为hls段时，最后一个.ts段包含一些解码错误。似乎发生在最后一段的持续时间足够短（大约1.5秒）时。
这是我的转码命令：
ffmpeg -i 111.flv -c:a aac -b:a 128k -f hls -hls_time 10.00 -hls_list_size 9999 tmp.m3u8
并输出：
ffmpeg version n4.0.1-5-gb5106c5 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-4)
configuration: --prefix=/home/zx/ffmpeg_build --extra-cflags=-I/home/zx/ffmpeg_build/include --extra-ldflags='-L/home/zx/ffmpeg_build/lib -ldl' --bindir=/home/zx/bin --pkg-config-flags=--static --enable-gpl --enable-nonfree --enable-version3 --enable-libfdk_aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libspeex --enable-libvpx --enable-libx264 --disable-shared --enable-static --disable-debug
libavutil 56. 14.100 / 56. 14.100
libavcodec 58. 18.100 / 58. 18.100
libavformat 58. 12.100 / 58. 12.100
libavdevice 58. 3.100 / 58. 3.100
libavfilter 7. 16.100 / 7. 16.100
libswscale 5. 1.100 / 5. 1.100
libswresample 3. 1.100 / 3. 1.100
libpostproc 55. 1.100 / 55. 1.100
Input #0, flv, from '111.flv':
Metadata:
major_brand : M4A
minor_version : 512
compatible_brands: isomiso2
date : 2018-05-31 01:31
encoder : Lavf57.25.100
Duration: 00:12:11.40, start: 0.000000, bitrate: 135 kb/s
Stream #0:0: Audio: aac (LC), 48000 Hz, stereo, fltp, 128 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[hls @ 0x25d4280] Opening 'tmp0.ts' for writing
[mpegts @ 0x26feb80] frame size not set
Output #0, hls, to 'tmp.m3u8':
Metadata:
major_brand : M4A
minor_version : 512
compatible_brands: isomiso2
date : 2018-05-31 01:31
encoder : Lavf58.12.100
Stream #0:0: Audio: aac (LC), 48000 Hz, stereo, fltp, 128 kb/s
Metadata:
encoder : Lavc58.18.100 aac
[hls @ 0x25d4280] Opening 'tmp1.ts' for writing
[hls @ 0x25d4280] Opening 'tmp.m3u8.tmp' for writing
[hls @ 0x25d4280] Opening 'tmp2.ts' for writing
[hls @ 0x25d4280] Opening 'tmp.m3u8.tmp' for writing
[hls @ 0x25d4280] Opening 'tmp3.ts' for writing
[hls @ 0x25d4280] Opening 'tmp.m3u8.tmp' for writing
[hls @ 0x25d4280] Opening 'tmp4.ts' for writing
......
[hls @ 0x25d4280] Opening 'tmp71.ts' for writing
[hls @ 0x25d4280] Opening 'tmp.m3u8.tmp' for writing
[hls @ 0x25d4280] Opening 'tmp72.ts' for writingx
[hls @ 0x25d4280] Opening 'tmp.m3u8.tmp' for writing
[hls @ 0x25d4280] Opening 'tmp73.ts' for writing
[hls @ 0x25d4280] Opening 'tmp.m3u8.tmp' for writing
[hls @ 0x25d4280] Opening 'tmp.m3u8.tmp' for writing
size=N/A time=00:12:11.39 bitrate=N/A speed=84.7x
video:0kB audio:11421kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
[aac @ 0x25a0580] Qavg: 567.976
转码后，m3u8文件中最后一段的持续时间为1.39秒：
....
#EXTINF:9.984000,
tmp71.ts
#EXTINF:10.005333,
tmp72.ts
#EXTINF:1.386667,
tmp73.ts
#EXT-X-ENDLIST
但是当我使用ffprobe解析最后一段时，出现了错误：
ffprobe -i tmp73.ts
ffprobe version n4.0.1-5-gb5106c5 Copyright (c) 2007-2018 the FFmpeg developers
built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-4)
configuration: --prefix=/home/zx/ffmpeg_build --extra-cflags=-I/home/zx/ffmpeg_build/include --extra-ldflags='-L/home/zx/ffmpeg_build/lib -ldl' --bindir=/home/zx/bin --pkg-config-flags=--static --enable-gpl --enable-nonfree --enable-version3 --enable-libfdk_aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libspeex --enable-libvpx --enable-libx264 --disable-shared --enable-static --disable-debug
libavutil 56. 14.100 / 56. 14.100
libavcodec 58. 18.100 / 58. 18.100
libavformat 58. 12.100 / 58. 12.100
libavdevice 58. 3.100 / 58. 3.100
libavfilter 7. 16.100 / 7. 16.100
libswscale 5. 1.100 / 5. 1.100
libswresample 3. 1.100 / 3. 1.100
libpostproc 55. 1.100 / 55. 1.100
tmp73.ts: Invalid data found when processing input
输入flv：
http://45.76.56.248/hls_transcode_fail.flv
md5sum: 4627bbb27bcb22c143ad4dfa47359650
由于我的统计模块依赖于ffprobe的输出，因此此异常将导致整个代码转换任务失败。我的临时解决方案是跳过在统计阶段太短的最后一段。但是，我需要一种更合理，更强大的方法来解决或绕过此问题。任何建议将不胜感激。