I managed to make video with amr_nb codec in openCamera (android 11) ==== mediainfo /dev/shm/VID_20240215_064913.mp4 General Complete name : /dev/shm/VID_20240215_064913.mp4 Format : MPEG-4 Format profile : Base Media / Version 2 Codec ID : mp42 (isom/mp42) File size : 21.1 MiB Duration : 5 min 2 s Overall bit rate mode : Variable Overall bit rate : 586 kb/s Frame rate : 19.929 FPS Encoded date : 2024-02-15 03:54:16 UTC Tagged date : 2024-02-15 03:54:16 UTC com.android.version : 11
Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : Constrained Baseline@L2 Format settings : 1 Ref Frames Format settings, CABAC : No Format settings, Reference frames : 1 frame Format settings, GOP : M=1, N=30 Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 5 min 2 s Source duration : 5 min 1 s Bit rate : 562 kb/s Width : 640 pixels Height : 480 pixels Display aspect ratio : 4:3 Frame rate mode : Variable Frame rate : 19.929 FPS Minimum frame rate : 9.998 FPS Maximum frame rate : 30.010 FPS Standard : Component Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.092 Stream size : 20.2 MiB (96%) Source stream size : 20.2 MiB (96%) Title : VideoHandle Language : English Encoded date : 2024-02-15 03:54:16 UTC Tagged date : 2024-02-15 03:54:16 UTC Color range : Limited Color primaries : BT.601 NTSC Transfer characteristics : BT.709 Matrix coefficients : BT.601 mdhd_Duration : 302037 Codec configuration box : avcC Audio ID : 2 Format : AMR Format/Info : Adaptive Multi-Rate Format profile : Narrow band Codec ID : samr Duration : 5 min 2 s Bit rate mode : Variable Bit rate : 12.8 kb/s Channel(s) : 1 channel Sampling rate : 8 000 Hz Bit depth : 13 bits Stream size : 472 KiB (2%) Title : SoundHandle Writing library : Language : English Encoded date : 2024-02-15 03:54:16 UTC Tagged date : 2024-02-15 03:54:16 UTC ==== ffmpeg (both 4.4.4 on Slackware 15.0 i586 and 6.1.1 on aarch64 Termux) refuse to copy audio stream: ffmpeg -i /dev/shm/VID_20240215_064913.mp4 -c:a copy -c:v copy /dev/shm/ccc.mp4 ffmpeg version 4.4.4 Copyright (c) 2000-2023 the FFmpeg developers built with gcc 11.2.0 (GCC) configuration: --prefix=/usr --libdir=/usr/lib --shlibdir=/usr/lib --docdir=/usr/doc/ffmpeg-4.4.4/html --mandir=/usr/man --disable-debug --enable-shared --disable-static --enable-gpl --enable-version3 --enable-avresample --arch=i586 --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-gnutls --enable-libass --enable-libbluray --enable-libcdio --enable-frei0r --enable-libgsm --enable-openal --enable-libopus --enable-librtmp --enable-libsnappy --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libv4l2 --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libmp3lame --enable-opencl --enable-opengl --enable-libopenjpeg --disable-libpulse --enable-libsmbclient --enable-libsvtav1 --enable-libxml2 --enable-librsvg --enable-libdrm --enable-libaom --enable-libdav1d --enable-libsoxr --enable-libzimg --enable-vapoursynth libavutil 56. 70.100 / 56. 70.100 libavcodec 58.134.100 / 58.134.100 libavformat 58. 76.100 / 58. 76.100 libavdevice 58. 13.100 / 58. 13.100 libavfilter 7.110.100 / 7.110.100 libavresample 4. 0. 0 / 4. 0. 0 libswscale 5. 9.100 / 5. 9.100 libswresample 3. 9.100 / 3. 9.100 libpostproc 55. 9.100 / 55. 9.100 [amrnb @ 0x87d54c0] Multiple frames in a packet. Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/dev/shm/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(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709), 640x480, 562 kb/s, SAR 1:1 DAR 4:3, 19.93 fps, 60 tbr, 90k tbn, 180k tbc (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, flt, 12 kb/s (default) Metadata: creation_time : 2024-02-15T03:54:16.000000Z handler_name : SoundHandle vendor_id : [0][0][0][0] [mp4 @ 0x87d9840] Could not find tag for codec amr_nb in stream #1, codec not currently supported in container Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument Error initializing output stream 0:1 -- Stream mapping: Stream #0:0 -> #0:0 (copy) Stream #0:1 -> #0:1 (copy) Last message repeated 1 times ==== well, I guess if Android somehow managed to put this into mp4 ffmpeg should be able to do the same trick, no? _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".