opus is apparently not the same as libopus. nor are these matching
options. opus encoder is claimed to be inferior to libopus encoder.
as it turns out, you DO need -strict -2 if you swap in flac codec for the
illegal copy codec in dash.
ffmpeg -i 53f4cc2e686e87dc2004e0ed9669cb50.m4a -i
880f1ecd9c960940b077896915a3841c.m4a -i
aff159b2496019e9b714e6d6660d779c.m4a -filter_complex
'concat=n=3:v=0:a=1:unsafe=1,asplit=3[out1][out2][out3]' -nostdin -map
'[out1]' -c:a:0 flac -map '[out2]' -c:a:1 libfdk_aac -b:a:1 32k
-profile:a:1 aac_he_v2 -map '[out3]' -c:a:2 libopus -b:a:2 32k
-application:a:2 voip -frame_duration:a:2 60 -vbr:a:2 off
-compression_level:a:2 10 -packet_loss 0 -dash_segment_type mp4 x.mpd
ffmpeg version N-93335-ga8c5ae4 Copyright (c) 2000-2019 the FFmpeg
developers
built with gcc 8 (Ubuntu 8.3.0-2ubuntu2)
configuration: --prefix=/home/jim/ffmpeg_build
--pkg-config-flags=--static --extra-cflags=-I/home/jim/ffmpeg_build/include
--extra-ldflags=-L/home/jim/ffmpeg_build/lib --extra-libs='-lpthread -lm'
--bindir=/home/jim/bin --disable-ffplay --enable-bzlib --enable-ffmpeg
--enable-gpl --enable-iconv --enable-libfdk-aac --enable-libmp3lame
--enable-libopus --enable-libsnappy --enable-libssh --enable-nonfree
--enable-openssl --enable-version3 --enable-zlib --enable-libfreetype
--enable-libtwolame --enable-libvpx --enable-avresample --enable-librsvg
--enable-libx264 --enable-libvorbis --enable-libtheora --enable-libfreetype
--enable-libtwolame --enable-libvpx --enable-avresample --enable-librsvg
--enable-libx264 --enable-libvorbis --enable-libtheora --disable-shared
--enable-lto --enable-static
libavutil 56. 26.100 / 56. 26.100
libavcodec 58. 47.103 / 58. 47.103
libavformat 58. 26.101 / 58. 26.101
libavdevice 58. 6.101 / 58. 6.101
libavfilter 7. 48.100 / 7. 48.100
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 4.100 / 5. 4.100
libswresample 3. 4.100 / 3. 4.100
libpostproc 55. 4.100 / 55. 4.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
'53f4cc2e686e87dc2004e0ed9669cb50.m4a':
Metadata:
major_brand : M4A
minor_version : 512
compatible_brands: isomiso2
encoder : Lavf58.26.101
Duration: 00:00:07.95, start: 0.000000, bitrate: 33 kb/s
Stream #0:0(und): Audio: aac (HE-AACv2) (mp4a / 0x6134706D), 44100 Hz,
stereo, fltp, 32 kb/s (default)
Metadata:
handler_name : SoundHandler
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from
'880f1ecd9c960940b077896915a3841c.m4a':
Metadata:
major_brand : M4A
minor_version : 512
compatible_brands: isomiso2
date : 2019-03-08 20:15
encoder : Lavf58.26.101
Duration: 00:01:13.25, start: 0.000000, bitrate: 32 kb/s
Stream #1:0(und): Audio: aac (HE-AACv2) (mp4a / 0x6134706D), 44100 Hz,
stereo, fltp, 32 kb/s (default)
Metadata:
handler_name : SoundHandler
Input #2, mov,mp4,m4a,3gp,3g2,mj2, from
'aff159b2496019e9b714e6d6660d779c.m4a':
Metadata:
major_brand : M4A
minor_version : 512
compatible_brands: isomiso2
encoder : Lavf58.26.101
Duration: 00:00:08.02, start: 0.000000, bitrate: 33 kb/s
Stream #2:0(und): Audio: aac (HE-AACv2) (mp4a / 0x6134706D), 44100 Hz,
stereo, fltp, 32 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 (aac) -> concat:in0:a0
Stream #1:0 (aac) -> concat:in1:a0
Stream #2:0 (aac) -> concat:in2:a0
asplit:output0 -> Stream #0:0 (flac)
asplit:output1 -> Stream #0:1 (libfdk_aac)
asplit:output2 -> Stream #0:2 (libopus)
[flac @ 0x55babd0a42c0] encoding as 24 bits-per-sample
[dash @ 0x55babd0d3600] Opening 'init-stream0.mp4' for writing
[mp4 @ 0x55babd373b80] flac in MP4 support is experimental, add '-strict
-2' if you want to use it.
Could not write header for output file #0 (incorrect codec parameters ?):
Experimental feature
Error initializing output stream 0:2 --
Conversion failed!
On Sat, Mar 16, 2019 at 9:56 AM James Northrup <[email protected]> wrote:
> thank you so much!
>
> opus wants -strict -2
>
> it appears that stream copy is off the menu for filtered input, which is
> actually a good thing to protect against codec mismatch as written. it
> is known to be 128k mp3 source content.
>
> ffmpeg -i 53f4cc2e686e87dc2004e0ed9669cb50.m4a -i
> 880f1ecd9c960940b077896915a3841c.m4a -i
> aff159b2496019e9b714e6d6660d779c.m4a -filter_complex
> 'concat=n=3:v=0:a=1:unsafe=1,asplit=3[out1][out2][out3]' -nostdin -map
> '[out1]' -c:a:0 copy -map '[out2]' -c:a:1 libfdk_aac -b:a:1 32k
> -profile:a:1 aac_he_v2 -map '[out3]' -c:a:2 opus -b:a:2 32k -strict
> -2 -application voip -frame_duration 60 -vbr off -compression_level 10
> -packet_loss 0 -dash_segment_type mp4 x.mpd
> ffmpeg version N-93335-ga8c5ae4 Copyright (c) 2000-2019 the FFmpeg
> developers
> built with gcc 8 (Ubuntu 8.3.0-2ubuntu2)
> configuration: --prefix=/home/jim/ffmpeg_build
> --pkg-config-flags=--static --extra-cflags=-I/home/jim/ffmpeg_build/include
> --extra-ldflags=-L/home/jim/ffmpeg_build/lib --extra-libs='-lpthread -lm'
> --bindir=/home/jim/bin --disable-ffplay --enable-bzlib --enable-ffmpeg
> --enable-gpl --enable-iconv --enable-libfdk-aac --enable-libmp3lame
> --enable-libopus --enable-libsnappy --enable-libssh --enable-nonfree
> --enable-openssl --enable-version3 --enable-zlib --enable-libfreetype
> --enable-libtwolame --enable-libvpx --enable-avresample --enable-librsvg
> --enable-libx264 --enable-libvorbis --enable-libtheora --enable-libfreetype
> --enable-libtwolame --enable-libvpx --enable-avresample --enable-librsvg
> --enable-libx264 --enable-libvorbis --enable-libtheora --disable-shared
> --enable-lto --enable-static
> libavutil 56. 26.100 / 56. 26.100
> libavcodec 58. 47.103 / 58. 47.103
> libavformat 58. 26.101 / 58. 26.101
> libavdevice 58. 6.101 / 58. 6.101
> libavfilter 7. 48.100 / 7. 48.100
> libavresample 4. 0. 0 / 4. 0. 0
> libswscale 5. 4.100 / 5. 4.100
> libswresample 3. 4.100 / 3. 4.100
> libpostproc 55. 4.100 / 55. 4.100
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
> '53f4cc2e686e87dc2004e0ed9669cb50.m4a':
> Metadata:
> major_brand : M4A
> minor_version : 512
> compatible_brands: isomiso2
> encoder : Lavf58.26.101
> Duration: 00:00:07.95, start: 0.000000, bitrate: 33 kb/s
> Stream #0:0(und): Audio: aac (HE-AACv2) (mp4a / 0x6134706D), 44100 Hz,
> stereo, fltp, 32 kb/s (default)
> Metadata:
> handler_name : SoundHandler
> Input #1, mov,mp4,m4a,3gp,3g2,mj2, from
> '880f1ecd9c960940b077896915a3841c.m4a':
> Metadata:
> major_brand : M4A
> minor_version : 512
> compatible_brands: isomiso2
> date : 2019-03-08 20:15
> encoder : Lavf58.26.101
> Duration: 00:01:13.25, start: 0.000000, bitrate: 32 kb/s
> Stream #1:0(und): Audio: aac (HE-AACv2) (mp4a / 0x6134706D), 44100 Hz,
> stereo, fltp, 32 kb/s (default)
> Metadata:
> handler_name : SoundHandler
> Input #2, mov,mp4,m4a,3gp,3g2,mj2, from
> 'aff159b2496019e9b714e6d6660d779c.m4a':
> Metadata:
> major_brand : M4A
> minor_version : 512
> compatible_brands: isomiso2
> encoder : Lavf58.26.101
> Duration: 00:00:08.02, start: 0.000000, bitrate: 33 kb/s
> Stream #2:0(und): Audio: aac (HE-AACv2) (mp4a / 0x6134706D), 44100 Hz,
> stereo, fltp, 32 kb/s (default)
> Metadata:
> handler_name : SoundHandler
> Streamcopy requested for output stream 0:0, which is fed from a complex
> filtergraph. Filtering and streamcopy cannot be used together.
>
>
> On Sat, Mar 16, 2019 at 8:37 AM Moritz Barsnick <[email protected]> wrote:
>
>> On Sat, Mar 16, 2019 at 01:25:49 +0100, Moritz Barsnick wrote:
>> > What do you need "-strict -2" for? ffmpeg's aac codec hasn't required
>> > that for over a year.
>>
>> Em, you're not even using ffmpeg's own aac encoder. so that comment
>> doesn't apply there. Still, you likely don't need this. :-)
>>
>> Moritz
>> _______________________________________________
>> ffmpeg-user mailing list
>> [email protected]
>> https://ffmpeg.org/mailman/listinfo/ffmpeg-user
>>
>> To unsubscribe, visit link above, or email
>> [email protected] with subject "unsubscribe".
>
>
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