launching ffmpeg from inside my c code doesn't convert video stream from fifo

42 views

Skip to first unread message

michael c

unread,

May 12, 2017, 5:43:35 PM5/12/17

to BeagleBoard

(ubuntu 16.04 linux 4.4.62-ti-r99)

i have a raw h264 feed coming into my c program (into a callback from a custom API) and then i named-piped the raw h264 to a file and this CLI command converts that file successfully.

ffmpeg -report -re -framerate 30 -y -f h264 -i orbi_0148.cam1.h264 -c:v copy -an -video_size 1920x1080 -f mp4 orbi_0148.cam1-1.mp4

i then try to launch this command from my program with the same options using execv(),

first mkfifo the fifo's,

then launch ffmpeg (shown below)

start the streaming form the cameras to my callback function, and out to the fifo's.

i close the fifos at the end of video recording.

and don't get any file created and get this output, which i don't understand at all.

(the successful command line output follows below this output generated from execv())

thanks, any help much appreciated.

hardware has come in now and the spot light is on me.

:-)

(execv output with options -report -y -i /tmp/fifocam3.h264 -c:v copy -an -video_size 1920x1080 -f mp4 /media/sd-card/orbi_0140.cam3.mp4)

root@arm:/home/orbi# cat ffmpeg-20170511-001941.log

ffmpeg started on 2017-05-11 at 00:19:41

Report written to "ffmpeg-20170511-001941.log"

Command line:

/usr/bin/ffmpeg -report -y -i /tmp/fifocam3.h264 -c:v copy -an -video_size 1920x1080 -f mp4 /media/sd-card/orbi_0140.cam3.mp4

built with gcc 5.4.0 (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.4) 20160609

configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/arm-linux-gnueabihf --incdir=/usr/include/arm-linux-gnueabihf --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11gr libavutil 54. 31.100 / 54. 31.100

libavcodec 56. 60.100 / 56. 60.100

libavformat 56. 40.101 / 56. 40.101

libavdevice 56. 4.100 / 56. 4.100

libavfilter 5. 40.101 / 5. 40.101

libavresample 2. 1. 0 / 2. 1. 0

libswscale 3. 1.101 / 3. 1.101

libswresample 1. 2.101 / 1. 2.101

libpostproc 53. 3.100 / 53. 3.100

Splitting the commandline.

Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'.

Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.

Reading option '-i' ... matched as input url with argument '/tmp/fifocam3.h264'.

Reading option '-c:v' ... matched as option 'c' (codec name) with argument 'copy'.

Reading option '-an' ... matched as option 'an' (disable audio) with argument '1'.

Reading option '-video_size' ... matched as AVOption 'video_size' with argument '1920x1080'.

Reading option '-f' ... matched as option 'f' (force format) with argument 'mp4'.

Reading option '/media/sd-card/orbi_0140.cam3.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 y (overwrite output files) with argument 1.

…

Successfully parsed a group of options.

Parsing a group of options: input url /tmp/fifocam3.h264.

…

Successfully parsed a group of options.

Opening an input file: /tmp/fifocam3.h264.

[h264 @ 0xf249a0] Format h264 probed with size=2048 and score=51

[h264 @ 0xf249a0] Before avformat_find_stream_info() pos: 0 bytes read:32768 seeks:0

[h264 @ 0xf25460] Current profile doesn't provide more RBSP data in PPS, skipping

[h264 @ 0xf25460] bytestream overread -4

[h264 @ 0xf25460] bytestream overread -10

[h264 @ 0xf25460] error while decoding MB 112 28, bytestream -10

[h264 @ 0xf25460] concealing 4737 DC, 4737 AC, 4737 MV errors in P frame

[h264 @ 0xf25460] Frame num gap 7 5

/////// successful command line run \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

root@arm:/home/orbi# ffmpeg -report -re -framerate 30 -y -f h264 -i orbi_0148.cam1.h264 -c:v copy -an -video_size 1920x1080 -f mp4 orbi_0148.cam1-1.mp4

root@arm:/home/orbi# cat ffmpeg-20170511-002629.log

ffmpeg started on 2017-05-11 at 00:26:29

Report written to "ffmpeg-20170511-002629.log"

Command line:

ffmpeg -report -re -framerate 30 -y -f h264 -i orbi_0148.cam1.h264 -c:v copy -an -video_size 1920x1080 -f mp4 orbi_0148.cam1-1.mp4

built with gcc 5.4.0 (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.4) 20160609

libavcodec 56. 60.100 / 56. 60.100

libavformat 56. 40.101 / 56. 40.101

libavdevice 56. 4.100 / 56. 4.100

libavfilter 5. 40.101 / 5. 40.101

libavresample 2. 1. 0 / 2. 1. 0

libswscale 3. 1.101 / 3. 1.101

libswresample 1. 2.101 / 1. 2.101

libpostproc 53. 3.100 / 53. 3.100

Splitting the commandline.

Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'.

Reading option '-re' ... matched as option 're' (read input at native frame rate) with argument '1'.

Reading option '-framerate' ... matched as AVOption 'framerate' with argument '30'.

Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.

Reading option '-f' ... matched as option 'f' (force format) with argument 'h264'.

Reading option '-i' ... matched as input url with argument 'orbi_0148.cam1.h264'.

Reading option '-c:v' ... matched as option 'c' (codec name) with argument 'copy'.

Reading option '-an' ... matched as option 'an' (disable audio) with argument '1'.

Reading option '-video_size' ... matched as AVOption 'video_size' with argument '1920x1080'.

Reading option '-f' ... matched as option 'f' (force format) with argument 'mp4'.

Reading option 'orbi_0148.cam1-1.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 y (overwrite output files) with argument 1.

…

Successfully parsed a group of options.

Parsing a group of options: input url orbi_0148.cam1.h264.

Applying option re (read input at native frame rate) with argument 1.

Applying option f (force format) with argument h264.

…

Successfully parsed a group of options.

Opening an input file: orbi_0148.cam1.h264.

[h264 @ 0x848a20] Before avformat_find_stream_info() pos: 0 bytes read:32768 seeks:0

[h264 @ 0x8515b0] Current profile doesn't provide more RBSP data in PPS, skipping

[h264 @ 0x848a20] max_analyze_duration 5000000 reached at 5005000 microseconds st:0

[h264 @ 0x848a20] After avformat_find_stream_info() pos: 3773440 bytes read:3801088 seeks:0 frames:152

Input #0, h264, from 'orbi_0148.cam1.h264':

Duration: N/A, bitrate: N/A

Stream #0:0, 152, 1/1200000: Video: h264 (Main), yuv420p(tv), 1920x1080, 29.97 fps, 29.97 tbr, 1200k tbn, 59.94 tbc

Successfully opened the file.

Parsing a group of options: output url orbi_0148.cam1-1.mp4.

…

Applying option c:v (codec name) with argument copy.

Applying option an (disable audio) with argument 1.

Applying option f (force format) with argument mp4.

Successfully parsed a group of options.

Opening an output file: orbi_0148.cam1-1.mp4.

Successfully opened the file.

[mp4 @ 0x8fb230] Codec for stream 0 does not use global headers but container format requires global headers

Output #0, mp4, to 'orbi_0148.cam1-1.mp4':

Metadata:

encoder : Lavf56.40.101

Stream #0:0, 0, 1/1200000: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1920x1080, q=2-31, 29.97 fps, 29.97 tbr, 1200k tbn, 1200k tbc

…

Stream mapping:

Stream #0:0 -> #0:0 (copy)

Press [q] to stop, [?] for help

[NULL @ 0x8515b0] Current profile doesn't provide more RBSP data in PPS, skipping

No more output streams to write to, finishing.e=00:00:08.64 bitrate=5887.7kbits/s

frame= 270 fps= 30 q=-1.0 Lsize= 6443kB time=00:00:08.97 bitrate=5880.6kbits/s

video:6440kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.056839%

Input file #0 (orbi_0148.cam1.h264):

Input stream #0:0 (video): 270 packets read (6594052 bytes);

Total: 270 packets (6594052 bytes) demuxed

Output file #0 (orbi_0148.cam1-1.mp4):

Output stream #0:0 (video): 270 packets muxed (6594052 bytes);

Total: 270 packets (6594052 bytes) muxed

0 frames successfully decoded, 0 decoding errors

[AVIOContext @ 0x931650] Statistics: 34 seeks, 308 writeouts

[AVIOContext @ 0x851190] Statistics: 6594052 bytes read, 0 seeks

Reply all

Reply to author

Forward

0 new messages