I've made some progress and getting closer to my final goal.
I used -f mpegts instead of mp4, and the video output is playing beautifully in
all players! The command I use is:
/home/pi/FFmpeg/ffmpeg -y -nostdin -f v4l2 -threads auto -input_format yuyv422
-fflags +genpts -flags +global_header -i /dev/video0 -s 1280x720 -r 25 -vcodec
h264_v4l2m2m -num_output_buffers 32 -num_capture_buffers 16 -keyint_min 25
-force_key_frames "expr:gte(t,n_forced*1)" -g 50 -b:v 6M -pix_fmt nv12 -f
mpegts -muxdelay 0 -muxpreload 0 -movflags +faststart /home/pi/Videos/output.ts
My next step is to have the same video capture result but with the ' -f
segment' to save the output in one-second parts, this is the command I use:
/home/pi/FFmpeg/ffmpeg -y -nostdin -f v4l2 -threads auto -input_format yuyv422
-fflags +genpts -flags +global_header -i /dev/video0 -s 1280x720 -r 25 -vcodec
h264_v4l2m2m -num_output_buffers 32 -num_capture_buffers 16 -keyint_min 25
-force_key_frames "expr:gte(t,n_forced*1)" -g 50 -b:v 6M -pix_fmt nv12 -f
mpegts -f segment -segment_time 1 -reset_timestamps 1 -segment_format mpegts
-muxdelay 0 -muxpreload 0 -movflags +faststart /home/pi/Videos/%d-output.ts
ffmpeg version ca55240 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 8 (Debian 8.3.0-6)
configuration: --prefix=/home/pi/ffmpeg_build --pkg-config-flags='pkg-config
--static' --extra-cflags=-I/home/pi/ffmpeg_build/include
--extra-ldflags=-L/home/pi/ffmpeg_build/lib --extra-libs='-lpthread -lm'
--bindir=/home/pi/bin --enable-gpl --enable-gnutls --disable-libaom
--enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame
--enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264
--disable-libx265 --enable-nonfree --arch=aarch64 --disable-libxml2
--enable-libwebp --enable-libdrm
libavutil 56. 51.100 / 56. 51.100
libavcodec 58. 91.100 / 58. 91.100
libavformat 58. 45.100 / 58. 45.100
libavdevice 58. 10.100 / 58. 10.100
libavfilter 7. 85.100 / 7. 85.100
libswscale 5. 7.100 / 5. 7.100
libswresample 3. 7.100 / 3. 7.100
libpostproc 55. 7.100 / 55. 7.100
[video4linux2,v4l2 @ 0x55a8058af0] Dequeued v4l2 buffer contains corrupted data
(0 bytes).
Input #0, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, start: 0.000000, bitrate: 1988671 kb/s
Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 1920x1080,
1988671 kb/s, 59.94 fps, 59.94 tbr, 1000k tbn, 1000k tbc
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (h264_v4l2m2m))
[video4linux2,v4l2 @ 0x55a8058af0] Dequeued v4l2 buffer contains corrupted data
(0 bytes).
Last message repeated 30 times
[h264_v4l2m2m @ 0x55a805cd40] Using device /dev/video11
[h264_v4l2m2m @ 0x55a805cd40] driver 'bcm2835-codec' on card
'bcm2835-codec-encode' in mplane mode
[h264_v4l2m2m @ 0x55a805cd40] requesting formats: output=NV12 capture=H264
[h264_v4l2m2m @ 0x55a805cd40] Failed to set gop size: Invalid argument
[segment @ 0x55a805b5c0] Opening '/home/pi/Videos/0-output.ts' for writing
Output #0, segment, to '/home/pi/Videos/%d-output.ts':
Metadata:
encoder : Lavf58.45.100
Stream #0:0: Video: h264 (h264_v4l2m2m), nv12, 1280x720, q=-1--1, 6000
kb/s, 25 fps, 90k tbn, 25 tbc
Metadata:
encoder : Lavc58.91.100 h264_v4l2m2m
[segment @ 0x55a805b5c0] Opening '/home/pi/Videos/1-output.ts' for writingp=21
speed=3.44e+04x
[segment @ 0x55a805b5c0] Opening '/home/pi/Videos/2-output.ts' for writingp=22
speed=1.98e+04x
[segment @ 0x55a805b5c0] Opening '/home/pi/Videos/3-output.ts' for writingp=22
speed=1.73e+04x
[segment @ 0x55a805b5c0] Opening '/home/pi/Videos/4-output.ts' for writingop=22
speed=1.25e+04x
[segment @ 0x55a805b5c0] Opening '/home/pi/Videos/5-output.ts' for writingop=22
speed=1.14e+04x
[segment @ 0x55a805b5c0] Opening '/home/pi/Videos/6-output.ts' for writingop=22
speed=9.84e+03x
[segment @ 0x55a805b5c0] Opening '/home/pi/Videos/7-output.ts' for writingop=22
speed=8.57e+03x
[segment @ 0x55a805b5c0] Opening '/home/pi/Videos/8-output.ts' for writingop=22
speed=7.64e+03x
^C[segment @ 0x55a805b5c0] Opening '/home/pi/Videos/9-output.ts' for writing=22
speed=6.86e+03x
frame= 226 fps= 21 q=-0.0 Lsize=N/A time=19:47:59.76 bitrate=N/A dup=45
drop=22 speed=6.56e+03x
video:3210kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing
overhead: unknown
Exiting normally, received signal 2.
///////////////////////// END OF OUTPUT /////////////////////////
The problem now is that only the first part file '1-output.ts' is playable, the
other parts, '2-output.ts' and onwards, are not playable when using ffplay:
ffplay version N-86265-gb946bd8 Copyright (c) 2003-2017 the FFmpeg developers
built with gcc 7.1.0 (GCC)
configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid
--enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc
--enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
--enable-gnutls --enable-iconv --enable-libass --enable-libbluray
--enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme
--enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264
--enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy
--enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame
--enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
--enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265
--enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
libavutil 55. 63.100 / 55. 63.100
libavcodec 57. 96.101 / 57. 96.101
libavformat 57. 72.101 / 57. 72.101
libavdevice 57. 7.100 / 57. 7.100
libavfilter 6. 90.100 / 6. 90.100
libswscale 4. 7.101 / 4. 7.101
libswresample 2. 8.100 / 2. 8.100
libpostproc 54. 6.100 / 54. 6.100
[h264 @ 0000000000e06c00] non-existing PPS 0 referenced 0B f=0/0
[AVBSFContext @ 0000000000e0cb40] Invalid NAL unit 0, skipping.
[h264 @ 0000000000e06c00] non-existing PPS 0 referenced
[h264 @ 0000000000e06c00] decode_slice_header error
[h264 @ 0000000000e06c00] no frame!
[h264 @ 0000000000e06c00] non-existing PPS 0 referenced
[AVBSFContext @ 0000000000e0cb40] Invalid NAL unit 0, skipping.
[h264 @ 0000000000e06c00] non-existing PPS 0 referenced
[h264 @ 0000000000e06c00] decode_slice_header error
[h264 @ 0000000000e06c00] no frame!
[h264 @ 0000000000e06c00] non-existing PPS 0 referenced
.
.
.
.
///////////////////////// END OF OUTPUT /////////////////////////
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