Hi, I have double display and with /dev/video0 I don't encounter any issue.
On Sat, 20 Oct 2018, 15:08 DopeLabs <[email protected] wrote: > do you have single or dual displays? your command is selecting /dev/video1 > which would be a 2nd display.. sources generally start at 0.. > > can you get a good capture using /dev/video0 ? > > > > > On Oct 19, 2018, at 9:31 57PM, Abhisek Techie < > [email protected]> wrote: > > > > Hi, > > Any suggestions,on the below issue. > > > > Regards > > > > On Thu, 18 Oct 2018, 15:29 Abhisek Techie, <[email protected]> > > wrote: > > > >> Hi, > >> > >> I am using a logitech 310c camera in linux environment to capture video > >> and convert it to a .flv file , by using the below command > >> > >> ffmpeg -f video4linux2 -s 432*240 -r 5 -pixel_format yuyv422 -i > >> /dev/video1 out3.flv -loglevel debug > >> > >> But , it gets stuck after printing "*[video4linux2,v4l2 @ 0x5864e400] > >> Setting time per frame to 1/5"* and when I interrupt with ctrl+c it > >> prints "*Output file is empty, nothing was encoded". * > >> > >> Below is the debug log , any suggestions on what's wrong with my > approach? > >> > >> ffmpeg version N-91993-g50d9c85358 Copyright (c) 2000-2018 the FFmpeg > >> developers > >> built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516 > >> configuration: --disable-x86asm > >> libavutil 56. 19.101 / 56. 19.101 > >> libavcodec 58. 30.100 / 58. 30.100 > >> libavformat 58. 18.101 / 58. 18.101 > >> libavdevice 58. 4.103 / 58. 4.103 > >> libavfilter 7. 32.100 / 7. 32.100 > >> libswscale 5. 2.100 / 5. 2.100 > >> libswresample 3. 2.100 / 3. 2.100 > >> Splitting the commandline. > >> Reading option '-f' ... matched as option 'f' (force format) with > argument > >> 'video4linux2'. > >> Reading option '-s' ... matched as option 's' (set frame size (WxH or > >> abbreviation)) with argument '432*240'. > >> Reading option '-r' ... matched as option 'r' (set frame rate (Hz value, > >> fraction or abbreviation)) with argument '5'. > >> Reading option '-pixel_format' ... matched as AVOption 'pixel_format' > with > >> argument 'yuyv422'. > >> Reading option '-i' ... matched as input url with argument > '/dev/video1'. > >> Reading option 'out3.flv' ... matched as output url. > >> Reading option '-loglevel' ... matched as option 'loglevel' (set logging > >> level) with argument 'debug'. > >> Finished splitting the commandline. > >> Parsing a group of options: global . > >> Applying option loglevel (set logging level) with argument debug. > >> Successfully parsed a group of options. > >> Parsing a group of options: input url /dev/video1. > >> Applying option f (force format) with argument video4linux2. > >> Applying option s (set frame size (WxH or abbreviation)) with argument > >> 432*240. > >> Applying option r (set frame rate (Hz value, fraction or abbreviation)) > >> with argument 5. > >> Successfully parsed a group of options. > >> Opening an input file: /dev/video1. > >> [video4linux2,v4l2 @ 0x5864e400] fd:3 capabilities:84200001 > >> [video4linux2,v4l2 @ 0x5864e400] Current input_channel: 0, input_name: > >> Camera 1, input_std: 0 > >> [video4linux2,v4l2 @ 0x5864e400] Setting time per frame to 1/5 * [Place > >> where it is getting stuck ]* > >> [video4linux2,v4l2 @ 0x5864e400] interrupted > >> Input #0, video4linux2,v4l2, from '/dev/video1': > >> Duration: N/A, bitrate: 8294 kb/s > >> Stream #0:0, 0, 1/1000000: Video: rawvideo, 1 reference frame (YUY2 / > >> 0x32595559), yuyv422, 432x240 (0x0), 0/1, 8294 kb/s, 5 fps, 5 tbr, 1000k > >> tbn, 1000k tbc > >> Successfully opened the file. > >> Parsing a group of options: output url out3.flv. > >> Successfully parsed a group of options. > >> Opening an output file: out3.flv. > >> [file @ 0x58653a00] Setting default whitelist 'file,crypto' > >> Successfully opened the file. > >> Stream mapping: > >> Stream #0:0 -> #0:0 (rawvideo (native) -> flv1 (flv)) > >> Press [q] to stop, [?] for help > >> Finishing stream 0:0 without any data written to it. > >> detected 1 logical cores > >> [graph 0 input from stream 0:0 @ 0x58654dc0] Setting 'video_size' to > value > >> '432x240' > >> [graph 0 input from stream 0:0 @ 0x58654dc0] Setting 'pix_fmt' to value > '1' > >> [graph 0 input from stream 0:0 @ 0x58654dc0] Setting 'time_base' to > value > >> '1/5' > >> [graph 0 input from stream 0:0 @ 0x58654dc0] Setting 'pixel_aspect' to > >> value '0/1' > >> [graph 0 input from stream 0:0 @ 0x58654dc0] Setting 'sws_param' to > value > >> 'flags=2' > >> [graph 0 input from stream 0:0 @ 0x58654dc0] Setting 'frame_rate' to > value > >> '5/1' > >> [graph 0 input from stream 0:0 @ 0x58654dc0] w:432 h:240 pixfmt:yuyv422 > >> tb:1/5 fr:5/1 sar:0/1 sws_param:flags=2 > >> [format @ 0x58655380] Setting 'pix_fmts' to value 'yuv420p' > >> [auto_scaler_0 @ 0x58655cc0] Setting 'flags' to value 'bicubic' > >> [auto_scaler_0 @ 0x58655cc0] w:iw h:ih flags:'bicubic' interl:0 > >> [format @ 0x58655380] auto-inserting filter 'auto_scaler_0' between the > >> filter 'Parsed_null_0' and the filter 'format' > >> [AVFilterGraph @ 0x58654a00] query_formats: 4 queried, 2 merged, 1 > already > >> done, 0 delayed > >> [auto_scaler_0 @ 0x58655cc0] w:432 h:240 fmt:yuyv422 sar:0/1 -> w:432 > >> h:240 fmt:yuv420p sar:0/1 flags:0x4 > >> [flv @ 0x58651480] intra_quant_bias = 0 inter_quant_bias = -64 > >> Output #0, flv, to 'out3.flv': > >> Metadata: > >> encoder : Lavf58.18.101 > >> Stream #0:0, 0, 1/1000: Video: flv1 (flv), 1 reference frame > >> ([2][0][0][0] / 0x0002), yuv420p, 432x240, 0/1, q=2-31, 200 kb/s, 5 > fps, 1k > >> tbn, 5 tbc > >> Metadata: > >> encoder : Lavc58.30.100 flv > >> Side data: > >> cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1 > >> frame= 0 fps=0.0 q=0.0 Lsize= 0kB time=00:00:00.00 bitrate=N/A > >> speed= 0x > >> video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB > >> muxing overhead: unknown > >> Input file #0 (/dev/video1): > >> Input stream #0:0 (video): 0 packets read (0 bytes); 0 frames decoded; > >> Total: 0 packets (0 bytes) demuxed > >> Output file #0 (out3.flv): > >> Output stream #0:0 (video): 0 frames encoded; 0 packets muxed (0 > bytes); > >> Total: 0 packets (0 bytes) muxed > >> Output file is empty, nothing was encoded (check -ss / -t / -frames > >> parameters if used) > >> 0 frames successfully decoded, 0 decoding errors > >> [AVIOContext @ 0x58653a80] Statistics: 1 seeks, 1 writeouts > >> Exiting normally, received signal 2. > >> > >> Regards > >> > > _______________________________________________ > > ffmpeg-user mailing list > > [email protected] > > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > > > To unsubscribe, visit link above, or email > > [email protected] with subject "unsubscribe". > > _______________________________________________ > ffmpeg-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list [email protected] 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