[FFmpeg-user] amr_nb in mp4 container?
Andrew Randrianasulu
randrianasulu at gmail.com
Thu Feb 15 11:02:00 EET 2024
On Thu, Feb 15, 2024 at 12:00 PM Ferdi Scholten <ferdi at sttc-nlp.nl> wrote:
>
> чт, 15 февр. 2024 г., 11:00 Andrew Randrianasulu <randrianasulu at gmail.com>:
> >>
> >> чт, 15 февр. 2024 г., 10:39 Ferdi Scholten<ferdi at sttc-nlp.nl>:
> >>
> >>> The AMR audio format is not specified as a valid audio format for the
> >>> mp4 container (see *ISO
> >>> <
> >>> https://en.wikipedia.org/wiki/International_Organization_for_Standardization>/IEC
> >>>
> >>> <https://en.wikipedia.org/wiki/International_Electrotechnical_Commission>
> >>>
> >>> 14496-14:2003)*. So managing to get it in does not mean it can be played
> >>> or transcoded by other software that conforms to the mp4 specifications.
> >>>
> >>> Should you want it to be registered as such, you can do that here:
> >>> https://mp4ra.org/request
> >>> You can find all officially supported codecs and other streams on that
> >>> site as well.
> >>>
> >> not sure if individuals can do anything about it?
> >>
> >> found this thread from 6 years ago
> >>
> >> https://lists.ffmpeg.org/pipermail/ffmpeg-devel/2017-May/211446.html
> >>
> >
> > anyway it does not mux correctly even in 3gp:
> >
> >
> > ffmpeg -i
> > /data/data/com.termux/files/home/storage/dcim/OpenCamera/VID_20240215_064913.mp4
> > -c:a copy -c:v copy vid-test.3gp
> > ffmpeg version 6.1.1 Copyright (c) 2000-2023 the
> > FFmpeg developers
> > built with Android (10552028, +pgo, +bolt, +lto, -mlgo, based on r487747d)
> > clang version 17.0.2 (
> > https://android.googlesource.com/toolchain/llvm-project
> > d9f89f4d16663d5012e5c09495f3b30ece3d2362) configuration: --arch=aarch64
> > --as=aarch64-linux-android-clang --cc=aarch64-linux-android-clang
> > --cxx=aarch64-linux-android-clang++ --nm=llvm-nm
> > --pkg-config=/home/builder/.termux-build/_cache/android-r26b-api-24-v1/bin/pkg-config
> > --strip=llvm-strip --cross-prefix=aarch64-linux-android- --disable-indevs
> > --disable-outdevs --enable-indev=lavfi --disable-static --disable-symver
> > --enable-cross-compile --enable-gnutls --enable-gpl --enable-version3
> > --enable-jni --enable-lcms2 --enable-libaom --enable-libass
> > --enable-libbluray --enable-libdav1d --enable-libfreetype --enable-libgme
> > --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb
> > --enable-libopenmpt --enable-libopus --enable-librav1e --enable-libsoxr
> > --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtheora
> > --enable-libv4l2 --enable-libvidstab --enable-libvo-amrwbenc
> > --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264
> > --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg
> > --enable-mediacodec --enable-opencl --enable-shared
> > --prefix=/data/data/com.termux/files/usr --target-os=android
> > --extra-libs=-landroid-glob --disable-vulkan --enable-neon
> > --disable-libfdk-aac
> >
> > libavutil 58. 29.100 / 58. 29.100
> >
> > libavcodec 60. 31.102 / 60. 31.102
> >
> > libavformat 60. 16.100 / 60. 16.100
> >
> > libavdevice 60. 3.100 / 60. 3.100
> >
> > libavfilter 9. 12.100 / 9. 12.100
> >
> > libswscale 7. 5.100 / 7. 5.100
> >
> > libswresample 4. 12.100 / 4. 12.100
> >
> > libpostproc 57. 3.100 / 57. 3.100
> >
> > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
> > '/data/data/com.termux/files/home/storage/dcim/OpenCamera/VID_20240215_064913.mp4':
> >
> > Metadata:
> >
> > major_brand : mp42
> >
> > minor_version : 0
> >
> > compatible_brands: isommp42
> >
> > creation_time : 2024-02-15T03:54:16.000000Z
> > com.android.version: 11
> > Duration: 00:05:02.04, start:
> > 0.000000, bitrate: 585 kb/s
> > Stream #0:0[0x1](eng): Video: h264 (Constrained Baseline) (avc1 /
> > 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709, progressive), 640x480,
> > 562 kb/s, SAR 1:1 DAR 4:3, 19.93 fps, 60 tbr, 90k tbn (default)
> >
> >
> > Metadata:
> > creation_time : 2024-02-15T03:54:16.000000Z
> > handler_name :
> > VideoHandle
> > vendor_id : [0][0][0][0]
> >
> > Stream #0:1[0x2](eng): Audio: amr_nb (samr / 0x726D6173), 8000 Hz, mono,
> > fltp, 12 kb/s (default) Metadata:
> > creation_time :
> > 2024-02-15T03:54:16.000000Z
> > handler_name : SoundHandle
> > vendor_id : [0][0][0][0]
> > [3gp @ 0xb40000789b073d70]
> > track 1: codec frame size is not set
> > Output #0, 3gp, to 'vid-test.3gp':
> >
> > Metadata:
> >
> > major_brand : mp42
> >
> > minor_version : 0
> >
> > compatible_brands: isommp42
> > com.android.version: 11
> > encoder :
> > Lavf60.16.100
> > Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 /
> > 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709, progressive), 640x480
> > [SAR 1:1 DAR 4:3], q=2-31, 562 kb/s, 19.93 fps, 60 tbr, 90k tbn (default)
> >
> >
> > Metadata:
> >
> > creation_time : 2024-02-15T03:54:16.000000Z
> >
> > handler_name : VideoHandle
> >
> > vendor_id : [0][0][0][0]
> >
> > Stream #0:1(eng): Audio: amr_nb (samr / 0x726D6173), 8000 Hz, mono, fltp,
> > 12 kb/s (default) Metadata:
> > creation_time :
> > 2024-02-15T03:54:16.000000Z
> > handler_name : SoundHandle
> >
> > vendor_id : [0][0][0][0]
> > Stream mapping:
> > Stream #0:0 -> #0:0 (copy)
> > Stream
> > #0:1 -> #0:1 (copy)
> >
> > Press [q] to stop, [?] for help
> >
> > [3gp @ 0xb40000789b073d70] fatal error, input is not a single packet,
> > implement a AVParser for it [vost#0:0/copy @ 0xb40000789b0730f0] Error
> > submitting a packet to the muxer: Operation not permitted
> >
> >
> > [out#0/3gp @ 0xb40000784b074350] Error muxing a packet
> >
> > [3gp @ 0xb40000789b073d70] fatal error, input is not a single packet,
> > implement a AVParser for it [out#0/3gp @ 0xb40000784b074350] Error writing
> > trailer: Operation not permitted
> > [out#0/3gp @ 0xb40000784b074350] video:27kB audio:2kB subtitle:0kB other
> > streams:0kB global headers:0kB muxing overhead: unknown
> > size= 0kB
> > time=00:00:01.18 bitrate= 1.1kbits/s speed= 296x
> >
> > Conversion failed!
> >
> > ====
> >
> > so, bug?
> >
> >
> >
> Not a bug, that patch was never merged because these codecs are not part
> of the mp4 specification.
> quote:
>
> So are you saying that there is no official specification for AMR in
> MP4, and these files are only compatible with your proprietary
> software?
> We generally require a proper specification to ensure we mux files that work.
>
>
>
> Following the conversation it is apparent that ffmpeg does support AMR,
> but only in the containers that offer such support such as the MOV
> container for quicktime.
>
> Quote from the conversation for that patch:
>
> "I resolved our issue with the MOV changes and now have H.264 / AMR-NB and
> H.264 / AMR-WB recording to MOV using non-patched FFmpeg. The former plays
> in both QuickTime and the Windows 10 'Movies & TV' app, video and audio.
> The MOV containing AMR-WB plays video only in QuickTime and neither in the
> Windows 10 'Movies & TV' app. This is equivalent to the MP4 files we
> record with our proposed patch."
>
> So, use the right container! It should work for MOV containers. If it does not then it could be a bug.
It does not, error for mov is the same as 3gp:
https://trac.ffmpeg.org/ticket/10864#ticket
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