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FFMPEG HLS 带有 var_stream_map 的多种音频语言 - EXT-X-MEDIA :TYPE doesn't contain LANGUAGE

转载 作者:行者123 更新时间:2023-12-04 22:59:24 24 4
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我有一个问题涉及使用 FFMPEG 的 HLS 上的多种音频语言。

我目前正在使用以下命令将具有多种音频语言的传输流混合到具有主播放列表的 HLS 流中:

ffmpeg -re -i $INPUT_URL -map 0:v -c:v copy -map 0:a -c:a copy -f hls -hls_time 6 -hls_list_size 10 -hls_flags delete_segments+program_date_time -hls_segment_filename "$FULL_OUTPUT_FOLDER/stream_%v_%d.ts" -var_stream_map "v:0,agroup:groupname a:0,agroup:groupname a:1,agroup:groupname a:2,agroup:groupname a:3,agroup:groupname" -master_pl_name master.m3u8 $FULL_OUTPUT_FOLDER/stream-%v.m3u8 

此命令的输出如下所示:
ffmpeg version 4.0.3-1~16.04.york0 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609
configuration: --prefix=/usr --extra-version='1~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
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
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 1.100 / 5. 1.100
libswresample 3. 1.100 / 3. 1.100
libpostproc 55. 1.100 / 55. 1.100
[mpegts @ 0x55c8cb7fee40] start time for stream 5 is not set in estimate_timings_from_pts
[mpegts @ 0x55c8cb7fee40] start time for stream 6 is not set in estimate_timings_from_pts
[mpegts @ 0x55c8cb7fee40] start time for stream 7 is not set in estimate_timings_from_pts
Input #0, mpegts, from '/home/user/Videos/output/example.ts':
Duration: 00:37:50.26, start: 1.498667, bitrate: 1257 kb/s
Program 1
Metadata:
service_name : example
service_provider: FFmpeg
Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(progressive), 696x572 [SAR 64:45 DAR 3712:2145], 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #0:1[0x101](eng): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 159 kb/s
Stream #0:2[0x102](fra): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 126 kb/s
Stream #0:3[0x103](ita): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 132 kb/s
Stream #0:4[0x104](eng): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 132 kb/s
Stream #0:5[0x105](eng): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:6[0x106](fra): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Stream #0:7[0x107](deu): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_0_0.ts' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_1_0.ts' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_2_0.ts' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_3_0.ts' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_4_0.ts' for writing
[mpegts @ 0x55c8cb880380] frame size not set
[mpegts @ 0x55c8cb882040] frame size not set
[mpegts @ 0x55c8cb8837c0] frame size not set
[mpegts @ 0x55c8cb885280] frame size not set
Output #0, hls, to '/var/www/html/live/stream-%v.m3u8':
Metadata:
encoder : Lavf58.12.100
Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(progressive), 696x572 [SAR 64:45 DAR 3712:2145], q=2-31, 25 fps, 25 tbr, 90k tbn, 25 tbc
Stream #0:1(eng): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 159 kb/s
Stream #0:2(fra): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 126 kb/s
Stream #0:3(ita): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 132 kb/s
Stream #0:4(eng): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 132 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Stream #0:2 -> #0:2 (copy)
Stream #0:3 -> #0:3 (copy)
Stream #0:4 -> #0:4 (copy)
Press [q] to stop, [?] for help
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_1_1.ts' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-1.m3u8.tmp' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_2_1.ts' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-2.m3u8.tmp' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_3_1.ts' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-3.m3u8.tmp' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_4_1.ts' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-4.m3u8.tmp' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_1_2.ts' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-1.m3u8.tmp' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_2_2.ts' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-2.m3u8.tmp' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_3_2.ts' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-3.m3u8.tmp' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_4_2.ts' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-4.m3u8.tmp' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_0_1.ts' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-0.m3u8.tmp' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/master.m3u8' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_1_3.ts' for writing
[hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-1.m3u8.tmp' for writing

此命令输出的主播放列表如下所示:
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_groupname",NAME="audio_0",DEFAULT=YES,URI="stream-1.m3u8"
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_groupname",NAME="audio_0",DEFAULT=YES,URI="stream-2.m3u8"
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_groupname",NAME="audio_0",DEFAULT=YES,URI="stream-3.m3u8"
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_groupname",NAME="audio_0",DEFAULT=YES,URI="stream-4.m3u8"
#EXT-X-STREAM-INF:BANDWIDTH=174900,RESOLUTION=696x572,AUDIO="group_groupname"
stream-0.m3u8

#EXT-X-STREAM-INF:BANDWIDTH=174900,CODECS="mp4a.40.2",AUDIO="group_groupname"
stream-1.m3u8

#EXT-X-STREAM-INF:BANDWIDTH=174900,CODECS="mp4a.40.2",AUDIO="group_groupname"
stream-2.m3u8

#EXT-X-STREAM-INF:BANDWIDTH=174900,CODECS="mp4a.40.2",AUDIO="group_groupname"
stream-3.m3u8

#EXT-X-STREAM-INF:BANDWIDTH=174900,CODECS="mp4a.40.2",AUDIO="group_groupname"
stream-4.m3u8

虽然这似乎适用于 VLC,但我需要 EXT-X-MEDIA:TYPE 标记来包含 LANGUAGE 属性。 (我正在使用的播放器使用它来解析音轨的语言)根据我找到的文档,我无法弄清楚如何做到这一点。

谁能帮我解决这个问题?

谢谢!

最佳答案

查看源代码后,我发现这根本不支持(还没有?)

在代码中,您可以找到以下功能:

[libavformat/hlsenc.c] create_master_playlist

[libavformat/hlsplaylist.c] ff_hls_write_audio_rendition

查看这些实现时,您会发现 LANGUAGE 属性实际上从未真正输出过。

所以这意味着我必须找到另一种方法来实现这一点。

关于FFMPEG HLS 带有 var_stream_map 的多种音频语言 - EXT-X-MEDIA :TYPE doesn't contain LANGUAGE,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/53205283/

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