[FFmpeg-user] Concat filter with more than 1 audio stream -- How?

Tue Feb 25 03:48:53 EET 2020

On 02/24/2020 04:28 PM, Carl Eugen Hoyos wrote:
> Am Mo., 24. Feb. 2020 um 13:56 Uhr schrieb Mark Filipak
> <markfilipak.windows+ffmpeg at gmail.com>:
>> On 02/24/2020 06:46 AM, Carl Eugen Hoyos wrote:
>>   > Am Mo., 24. Feb. 2020 um 12:22 Uhr schrieb Mark Filipak
>>   > <markfilipak.windows+ffmpeg at gmail.com>:
>>   >
>>   >> If I understand correctly, you think I should do this:
>>   >>
>>   >> copy /b
>>   >>
>> i:\VIDEO_TS\VTS_02_1.VOB+i:\VIDEO_TS\VTS_02_2.VOB+i:\VIDEO_TS\VTS_02_3.VOB+i:\VIDEO_TS\VTS_02_4.VOB+i:\VIDEO_TS\VTS_02_5.VOB
>>   >
>>   > You should use "copy /b" if you want to concatenate mpeg streams.
>>   > (This is what the command line you provided indicated. If you don't want
>>   > to concatenate mpeg streams but produce mkv files, then above is of
>>   > course irrelevant for you.)
>>   >
>>   > If you need an mkv file, use ffmpeg -i concat:... ....mkv
>>
>> Okay, you want me to try that form of concat.
>>
>>
>> ===== Example ===== (from the wiki):
>> ffmpeg -i "concat:[_input_#1_]|[_input_#2_]|[_input_#3_]" -c copy output.ts
>>
>> ===== This works for me =====
>> ffmpeg -i
>> "concat:i:\VIDEO_TS\VTS_02_1.VOB|i:\VIDEO_TS\VTS_02_2.VOB|i:\VIDEO_TS\VTS_02_3.VOB|i:\VIDEO_TS\VTS_02_4.VOB|i:\VIDEO_TS\VTS_02_5.VOB"
>> -c copy n:\output.ts
>>
>> But I want an MKV, so I'll ignore that the '.ts' above has only 1 audio
>> stream (which is the Isolated Score track) and I'll change'.ts' to
>> '.mkv' as you recommend.
>>
>>
>> C:\CMD & tiny apps\ffmpeg>ffmpeg -i
>> "concat:i:\VIDEO_TS\VTS_02_1.VOB|i:\VIDEO_TS\VTS_02_2.VOB|i:\VIDEO_TS\VTS_02_3.VOB|i:\VIDEO_TS\VTS_02_4.VOB|i:\VIDEO_TS\VTS_02_5.VOB"
>> -c copy n:\output.mkv
>> ffmpeg version N-94664-g0821bc4eee 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. 33.100 / 56. 33.100
>>     libavcodec     58. 55.101 / 58. 55.101
>>     libavformat    58. 31.104 / 58. 31.104
>>     libavdevice    58.  9.100 / 58.  9.100
>>     libavfilter     7. 58.101 /  7. 58.101
>>     libswscale      5.  6.100 /  5.  6.100
>>     libswresample   3.  6.100 /  3.  6.100
>>     libpostproc    55.  6.100 / 55.  6.100
>> Input #0, mpeg, from
>> 'concat:i:\VIDEO_TS\VTS_02_1.VOB|i:\VIDEO_TS\VTS_02_2.VOB|i:\VIDEO_TS\VTS_02_3.VOB|i:\VIDEO_TS\VTS_02_4.VOB|i:\VIDEO_TS\VTS_02_5.VOB':
>>     Duration: 01:43:54.21, start: 0.041500, bitrate: 6105 kb/s
>>       Stream #0:0[0x1bf]: Data: dvd_nav_packet
>>       Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, top
>> first), 720x480 [SAR 32:27 DAR 16:9], Closed Captions, 29.97 fps, 29.97
>> tbr, 90k tbn, 59.94 tbc
>>       Stream #0:2[0x83]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s
>>       Stream #0:3[0x82]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
>>       Stream #0:4[0x81]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s
>>       Stream #0:5[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
>> File 'n:\output.mkv' already exists. Overwrite ? [y/N] y
>> Output #0, matroska, to 'n:\output.mkv':
>>     Metadata:
>>       encoder         : Lavf58.31.104
>>       Stream #0:0: Video: mpeg2video (Main) (mpg2 / 0x3267706D),
>> yuv420p(tv, top first), 720x480 [SAR 32:27 DAR 16:9], q=2-31, 29.97 fps,
>> 29.97 tbr, 1k tbn, 90k tbc
>>       Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side),
>> fltp, 448 kb/s
>> Stream mapping:
>>     Stream #0:1 -> #0:0 (copy)
>>     Stream #0:2 -> #0:1 (copy)
>> Press [q] to stop, [?] for help
>> [matroska @ 000001df5ecb00c0] Timestamps are unset in a packet for
>> stream 0. This is deprecated and will stop working in the future. Fix
>> your code to set the timestamps properly
>> [matroska @ 000001df5ecb00c0] Can't write packet with unknown timestamp
>> av_interleaved_write_frame(): Invalid argument
>> frame=    2 fps=0.0 q=-1.0 Lsize=      10kB time=00:00:00.00
>> bitrate=83856.0kbits/s speed=1.02x
>> video:8kB audio:2kB subtitle:0kB other streams:0kB global headers:0kB
>> muxing overhead: 6.697883%
>> Conversion failed!
>>
>>   > I am not sure if you already read the wiki article about concatenation
>>   > in FFmpeg.
>>
>> That's where I got the EXAMPLE.
> 
> Above email does not contain a question afaict.

Concat filter with more than 1 audio stream -- How?

Carl, I think the best thing to do is to retire this thread. It's gotten 
seriously off-topic. I've posted a new thread: "concat protocol - 3 
objectives" that has objectives that have better wording.

Thanks,
Mark.