[FFmpeg-user] C920 h264 Problem

Canberk Demirsoy (Alumni) cdemirsoy at sabanciuniv.edu
Thu Jan 26 11:25:25 EET 2017


Hi guys even though i make lots of settings i still see yuv format in debug
file. How to correctly get h264 format from c920 using raspberry pi? And i
wanna transfer file without encoding or decoding by copying vcodec.

My script

 ffmpeg -report -f v4l2 -r 20 -s 1920x1080 -pix_fmt h264 -input_format h264
-i /dev/video0 -copyinkf -vcodec copy -loglevel debug -t 15 logging.mp4

Report


ffmpeg started on 2017-01-26 at 09:20:07
Report written to "ffmpeg-20170126-092007.log"
Command line:
ffmpeg -report -f v4l2 -r 20 -s 1920x1080 -pix_fmt h264 -input_format h264
-i /dev/video0 -copyinkf -vcodec copy -loglevel debug -t 15 logging.mp4
ffmpeg version git-2016-12-15-745f4bc Copyright (c) 2000-2016 the FFmpeg
developers
  built with gcc 4.9.2 (Raspbian 4.9.2-10)
  configuration: --enable-cross-compile --arch=armel --target-os=linux
--enable-gpl --enable-libx264 --enable-nonfree --enable-libfdk-aac
--enable-libvpx --enable-libopus --enable-librtmp --enable-libmp3lame
--extra-libs=-lasound
  libavutil      55. 43.100 / 55. 43.100
  libavcodec     57. 68.100 / 57. 68.100
  libavformat    57. 60.100 / 57. 60.100
  libavdevice    57.  2.100 / 57.  2.100
  libavfilter     6. 68.100 /  6. 68.100
  libswscale      4.  3.101 /  4.  3.101
  libswresample   2.  4.100 /  2.  4.100
  libpostproc    54.  2.100 / 54.  2.100
Splitting the commandline.
Reading option '-report' ... matched as option 'report' (generate a report)
with argument '1'.
Reading option '-f' ... matched as option 'f' (force format) with argument
'v4l2'.
Reading option '-r' ... matched as option 'r' (set frame rate (Hz value,
fraction or abbreviation)) with argument '20'.
Reading option '-s' ... matched as option 's' (set frame size (WxH or
abbreviation)) with argument '1920x1080'.
Reading option '-pix_fmt' ... matched as option 'pix_fmt' (set pixel
format) with argument 'h264'.
Reading option '-input_format' ... matched as AVOption 'input_format' with
argument 'h264'.
Reading option '-i' ... matched as input url with argument '/dev/video0'.
Reading option '-copyinkf' ... matched as option 'copyinkf' (copy initial
non-keyframes) with argument '1'.
Reading option '-vcodec' ... matched as option 'vcodec' (force video codec
('copy' to copy stream)) with argument 'copy'.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging
level) with argument 'debug'.
Reading option '-t' ... matched as option 't' (record or transcode
"duration" seconds of audio/video) with argument '15'.
Reading option 'logging.mp4' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option report (generate a report) with argument 1.
Applying option loglevel (set logging level) with argument debug.
Successfully parsed a group of options.
Parsing a group of options: input url /dev/video0.
Applying option f (force format) with argument v4l2.
Applying option r (set frame rate (Hz value, fraction or abbreviation))
with argument 20.
Applying option s (set frame size (WxH or abbreviation)) with argument
1920x1080.
Applying option pix_fmt (set pixel format) with argument h264.
Successfully parsed a group of options.
Opening an input file: /dev/video0.
[video4linux2,v4l2 @ 0x2e07bd0] fd:5 capabilities:84200001
[video4linux2,v4l2 @ 0x2e07bd0] Current input_channel: 0, input_name:
Camera 1, input_std: 0
[video4linux2,v4l2 @ 0x2e07bd0] Setting time per frame to 1/20
[h264 @ 0x2e08bd0] nal_unit_type: 7, nal_ref_idc: 3
[h264 @ 0x2e08bd0] nal_unit_type: 8, nal_ref_idc: 3
[h264 @ 0x2e08bd0] nal_unit_type: 5, nal_ref_idc: 3
[h264 @ 0x2e08bd0] nal_unit_type: 5, nal_ref_idc: 3
[h264 @ 0x2e08bd0] nal_unit_type: 5, nal_ref_idc: 3
[h264 @ 0x2e08bd0] nal_unit_type: 5, nal_ref_idc: 3
[h264 @ 0x2e08bd0] Reinit context to 1920x1088, pix_fmt: yuvj420p
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[h264 @ 0x2e08bd0] nal_unit_type: 1, nal_ref_idc: 2
[video4linux2,v4l2 @ 0x2e07bd0] All info found
Input #0, video4linux2,v4l2, from '/dev/video0':
  Duration: N/A, start: 2409.495782, bitrate: N/A
    Stream #0:0, 8, 1/1000000: Video: h264 (Constrained Baseline), 1
reference frame, yuvj420p(pc, progressive, left), 1920x1080 (1920x1088)
[SAR 1:1 DAR 16:9], 0/1, -3 kb/s, 20 fps, 20 tbr, 1000k tbn, 40 tbc
Successfully opened the file.
Parsing a group of options: output url logging.mp4.
Applying option copyinkf (copy initial non-keyframes) with argument 1.
Applying option vcodec (force video codec ('copy' to copy stream)) with
argument copy.
Applying option t (record or transcode "duration" seconds of audio/video)
with argument 15.
Successfully parsed a group of options.
Opening an output file: logging.mp4.
[file @ 0x2ee6470] Setting default whitelist 'file,crypto'
Successfully opened the file.
Output #0, mp4, to 'logging.mp4':
  Metadata:
    encoder         : Lavf57.60.100
    Stream #0:0, 0, 1/10240: Video: h264 (Constrained Baseline), 1
reference frame ([33][0][0][0] / 0x0021), yuvj420p(pc, progressive, left),
1920x1080 (0x0) [SAR 1:1 DAR 16:9], 0/1, q=2-31, -3 kb/s, 20 fps, 20 tbr,
10240 tbn, 20 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
cur_dts is invalid (this is harmless if it occurs once at the start per
stream)
[mp4 @ 0x2ed1c80] Non-monotonous DTS in output stream 0:0; previous: 0,
current: -2561; changing to 1. This may result in incorrect timestamps in
the output file.
[mp4 @ 0x2ed1c80] Non-monotonous DTS in output stream 0:0; previous: 1,
current: -2028; changing to 2. This may result in incorrect timestamps in
the output file.
[mp4 @ 0x2ed1c80] Non-monotonous DTS in output stream 0:0; previous: 2,
current: -1536; changing to 3. This may result in incorrect timestamps in
the output file.
[mp4 @ 0x2ed1c80] Non-monotonous DTS in output stream 0:0; previous: 3,
current: -1003; changing to 4. This may result in incorrect timestamps in
the output file.
[mp4 @ 0x2ed1c80] Non-monotonous DTS in output stream 0:0; previous: 4,
current: -512; changing to 5. This may result in incorrect timestamps in
the output file.
frame=   18 fps=0.0 q=-1.0 size=     370kB time=00:00:00.55
bitrate=5504.0kbits/s speed= 1.1x
frame=   28 fps= 28 q=-1.0 size=     560kB time=00:00:01.05
bitrate=4365.9kbits/s speed=1.05x
frame=   38 fps= 25 q=-1.0 size=     745kB time=00:00:01.55
bitrate=3936.3kbits/s speed=1.03x
frame=   48 fps= 24 q=-1.0 size=     928kB time=00:00:02.05
bitrate=3705.7kbits/s speed=1.02x
frame=   58 fps= 23 q=-1.0 size=    1115kB time=00:00:02.55
bitrate=3582.3kbits/s speed=1.02x
frame=   68 fps= 23 q=-1.0 size=    1298kB time=00:00:03.05
bitrate=3484.6kbits/s speed=1.01x
frame=   78 fps= 22 q=-1.0 size=    1480kB time=00:00:03.55
bitrate=3414.9kbits/s speed=1.01x
frame=   88 fps= 22 q=-1.0 size=    1665kB time=00:00:04.05
bitrate=3366.6kbits/s speed=1.01x
frame=   98 fps= 22 q=-1.0 size=    1846kB time=00:00:04.55
bitrate=3322.6kbits/s speed=1.01x
frame=  108 fps= 21 q=-1.0 size=    2027kB time=00:00:05.05
bitrate=3287.4kbits/s speed=   1x
frame=  118 fps= 21 q=-1.0 size=    2261kB time=00:00:05.55
bitrate=3337.0kbits/s speed=   1x
frame=  128 fps= 21 q=-1.0 size=    2427kB time=00:00:06.05
bitrate=3285.4kbits/s speed=   1x
frame=  138 fps= 21 q=-1.0 size=    2607kB time=00:00:06.55
bitrate=3259.7kbits/s speed=   1x
frame=  149 fps= 21 q=-1.0 size=    2807kB time=00:00:07.09
bitrate=3238.9kbits/s speed=1.01x
frame=  159 fps= 21 q=-1.0 size=    2989kB time=00:00:07.59
bitrate=3222.0kbits/s speed=1.01x
frame=  169 fps= 21 q=-1.0 size=    3174kB time=00:00:08.09
bitrate=3210.2kbits/s speed=1.01x
frame=  179 fps= 21 q=-1.0 size=    3381kB time=00:00:08.59
bitrate=3220.8kbits/s speed=1.01x
frame=  189 fps= 21 q=-1.0 size=    3551kB time=00:00:09.09
bitrate=3197.1kbits/s speed=   1x
frame=  199 fps= 21 q=-1.0 size=    3732kB time=00:00:09.59
bitrate=3184.7kbits/s speed=   1x
frame=  209 fps= 21 q=-1.0 size=    3925kB time=00:00:10.09
bitrate=3183.3kbits/s speed=   1x
frame=  219 fps= 21 q=-1.0 size=    4103kB time=00:00:10.59
bitrate=3171.4kbits/s speed=   1x
frame=  229 fps= 21 q=-1.0 size=    4287kB time=00:00:11.09
bitrate=3164.0kbits/s speed=   1x
frame=  239 fps= 21 q=-1.0 size=    4470kB time=00:00:11.59
bitrate=3156.7kbits/s speed=   1x
frame=  249 fps= 21 q=-1.0 size=    4652kB time=00:00:12.09
bitrate=3149.4kbits/s speed=   1x
frame=  259 fps= 21 q=-1.0 size=    4835kB time=00:00:12.59
bitrate=3143.5kbits/s speed=   1x
frame=  269 fps= 21 q=-1.0 size=    5018kB time=00:00:13.09
bitrate=3137.9kbits/s speed=   1x
frame=  279 fps= 21 q=-1.0 size=    5201kB time=00:00:13.59
bitrate=3132.8kbits/s speed=   1x
frame=  290 fps= 21 q=-1.0 size=    5403kB time=00:00:14.15
bitrate=3127.5kbits/s speed=   1x
frame=  300 fps= 21 q=-1.0 size=    5586kB time=00:00:14.65
bitrate=3123.0kbits/s speed=   1x
No more output streams to write to, finishing.
frame=  307 fps= 20 q=-1.0 Lsize=    5719kB time=00:00:15.00
bitrate=3123.1kbits/s speed=   1x
video:5714kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.077692%
Input file #0 (/dev/video0):
  Input stream #0:0 (video): 308 packets read (5870212 bytes);
  Total: 308 packets (5870212 bytes) demuxed
Output file #0 (logging.mp4):
  Output stream #0:0 (video): 307 packets muxed (5851314 bytes);
  Total: 307 packets (5851314 bytes) muxed
0 frames successfully decoded, 0 decoding errors
[AVIOContext @ 0x2ee0ff0] Statistics: 34 seeks, 339 writeouts


*Canberk Demirsoy*

B.Sc. Electrical Engineering, Sabanc─▒ University
M.Sc. Computer Engineering, Munich Technical University


More information about the ffmpeg-user mailing list