[FFmpeg-user] FFprobe does not set duration
ming qiang
xangelwing at gmail.com
Tue Jun 30 04:59:50 CEST 2015
It seems the input video does not have duration in meta. You should try to
fix it with ffmpeg.
2015-06-15 11:19 GMT+08:00 Wesley Wen <delbin.wen at gmail.com>:
> On Fri, Jun 12, 2015 at 2:29 PM, Wesley Wen <delbin.wen at gmail.com> wrote:
>
> > Hi,
> > I tried to use FFprobe to get duration of the file, but failed. Here is
> my
> > command (with debug information) and console output.
> >
> > $ffprobe -i 464223_m.mpg -show_format -loglevel debug
> > ffprobe version git-2015-06-12-4af9eb4 Copyright (c) 2007-2015 the FFmpeg
> > developers
> > built with Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM
> > 3.6.0svn)
> > configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD --enable-shared
> > --enable-pthreads --enable-gpl --enable-version3
> --enable-hardcoded-tables
> > --enable-avresample --cc=clang --host-cflags= --host-ldflags=
> > --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc
> --enable-libxvid
> > --enable-ffplay --enable-libfdk-aac --enable-libx265 --enable-nonfree
> > --enable-vda
> > libavutil 54. 27.100 / 54. 27.100
> > libavcodec 56. 41.100 / 56. 41.100
> > libavformat 56. 36.100 / 56. 36.100
> > libavdevice 56. 4.100 / 56. 4.100
> > libavfilter 5. 16.101 / 5. 16.101
> > libavresample 2. 1. 0 / 2. 1. 0
> > libswscale 3. 1.101 / 3. 1.101
> > libswresample 1. 2.100 / 1. 2.100
> > libpostproc 53. 3.100 / 53. 3.100
> > [mpeg @ 0x7fbf9b802a00] Format mpeg probed with size=2048 and score=26
> > [mpeg @ 0x7fbf9b802a00] Before avformat_find_stream_info() pos: 0 bytes
> > read:32768 seeks:0
> > [mpeg @ 0x7fbf9b802a00] probing stream 0 pp:2500
> > [mpeg @ 0x7fbf9b802a00] Probe with size=1994, packets=1 detected
> mpegvideo
> > with score=25
> > [mpeg @ 0x7fbf9b802a00] probed stream 0
> > [mpeg @ 0x7fbf9b802a00] Probe buffer size limit of 5000000 bytes reached
> > [mpeg @ 0x7fbf9b802a00] stream 0 : no PTS found at end of file, duration
> > not set
> > [mpeg @ 0x7fbf9b802a00] stream 1 : no PTS found at end of file, duration
> > not set
> > [mpeg @ 0x7fbf9b802a00] After avformat_find_stream_info() pos: 0 bytes
> > read:12927344 seeks:6 frames:337
> > Input #0, mpeg, from '464223_m.mpg':
> > Duration: N/A, start: 0.262000, bitrate: N/A
> > Stream #0:0[0x1e0], 145, 1/90000: Video: mpeg2video (Main), 1
> > reference frame, yuv420p(tv, left), 720x480 [SAR 32:27 DAR 16:9],
> > 1001/60000, 8000 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
> > Stream #0:1[0x1c0], 192, 1/90000: Audio: mp2, 48000 Hz, stereo, s16p,
> > 384 kb/s
> > detected 4 logical cores
> > [FORMAT]
> > filename=464223_m.mpg
> > nb_streams=2
> > nb_programs=0
> > format_name=mpeg
> > format_long_name=MPEG-PS (MPEG-2 Program Stream)
> > start_time=0.262000
> > duration=N/A
> > size=1565743108
> > bit_rate=N/A
> > probe_score=26
> > [/FORMAT]
> > [AVIOContext @ 0x7fbf9af00140] Statistics: 12927344 bytes read, 6 seeks
> >
> > The debug log told me that no PTS found at end of file, and therefore
> > duration was not set. So I tried to dump every frame with -show_frames
> > option, and I can see there are PTS values for last audio and video
> samples.
> > $ffprobe -i 464223_m.mpg -show_frames -loglevel debug
> > (... keep the last few audio & video samples ...)
> > [FRAME]
> > media_type=video
> > stream_index=0
> > key_frame=0
> > pkt_pts=37939458
> > pkt_pts_time=421.549533
> > pkt_dts=37939458
> > pkt_dts_time=421.549533
> > best_effort_timestamp=37939458
> > best_effort_timestamp_time=421.549533
> > pkt_duration=3003
> > pkt_duration_time=0.033367
> > pkt_pos=452780064
> > pkt_size=15296
> > width=720
> > height=480
> > pix_fmt=yuv420p
> > sample_aspect_ratio=32:27
> > pict_type=B
> > coded_picture_number=12627
> > display_picture_number=0
> > interlaced_frame=1
> > top_field_first=1
> > repeat_pict=0
> > [/FRAME]
> > [FRAME]
> > media_type=audio
> > stream_index=1
> > key_frame=1
> > pkt_pts=37931580
> > pkt_pts_time=421.462000
> > pkt_dts=37931580
> > pkt_dts_time=421.462000
> > best_effort_timestamp=37931580
> > best_effort_timestamp_time=421.462000
> > pkt_duration=2160
> > pkt_duration_time=0.024000
> > pkt_pos=N/A
> > pkt_size=1152
> > sample_fmt=s16p
> > nb_samples=1152
> > channels=2
> > channel_layout=stereo
> > [/FRAME]
> > [FRAME]
> > media_type=audio
> > stream_index=1
> > key_frame=1
> > pkt_pts=37933740
> > pkt_pts_time=421.486000
> > pkt_dts=37933740
> > pkt_dts_time=421.486000
> > best_effort_timestamp=37933740
> > best_effort_timestamp_time=421.486000
> > pkt_duration=2160
> > pkt_duration_time=0.024000
> > pkt_pos=452835360
> > pkt_size=1152
> > sample_fmt=s16p
> > nb_samples=1152
> > channels=2
> > channel_layout=stereo
> > [/FRAME]
> > [FRAME]
> > media_type=video
> > stream_index=0
> > key_frame=0
> > pkt_pts=37942461
> > pkt_pts_time=421.582900
> > pkt_dts=37942461
> > pkt_dts_time=421.582900
> > best_effort_timestamp=37942461
> > best_effort_timestamp_time=421.582900
> > pkt_duration=3003
> > pkt_duration_time=0.033367
> > pkt_pos=452712480
> > pkt_size=50168
> > width=720
> > height=480
> > pix_fmt=yuv420p
> > sample_aspect_ratio=32:27
> > pict_type=P
> > coded_picture_number=12625
> > display_picture_number=0
> > interlaced_frame=1
> > top_field_first=1
> > repeat_pict=0
> > [/FRAME]
> > [FRAME]
> > media_type=video
> > stream_index=0
> > key_frame=0
> > pkt_pts=37945464
> > pkt_pts_time=421.616267
> > pkt_dts=37945464
> > pkt_dts_time=421.616267
> > best_effort_timestamp=37945464
> > best_effort_timestamp_time=421.616267
> > pkt_duration=3003
> > pkt_duration_time=0.033367
> > pkt_pos=452851744
> > pkt_size=15989
> > width=720
> > height=480
> > pix_fmt=yuv420p
> > sample_aspect_ratio=32:27
> > pict_type=B
> > coded_picture_number=12629
> > display_picture_number=0
> > interlaced_frame=1
> > top_field_first=1
> > repeat_pict=0
> > [/FRAME]
> > [FRAME]
> > media_type=audio
> > stream_index=1
> > key_frame=1
> > pkt_pts=37935900
> > pkt_pts_time=421.510000
> > pkt_dts=37935900
> > pkt_dts_time=421.510000
> > best_effort_timestamp=37935900
> > best_effort_timestamp_time=421.510000
> > pkt_duration=2160
> > pkt_duration_time=0.024000
> > pkt_pos=N/A
> > pkt_size=1152
> > sample_fmt=s16p
> > nb_samples=1152
> > channels=2
> > channel_layout=stereo
> > [/FRAME]
> > [FRAME]
> > media_type=audio
> > stream_index=1
> > key_frame=1
> > pkt_pts=37938060
> > pkt_pts_time=421.534000
> > pkt_dts=37938060
> > pkt_dts_time=421.534000
> > best_effort_timestamp=37938060
> > best_effort_timestamp_time=421.534000
> > pkt_duration=2160
> > pkt_duration_time=0.024000
> > pkt_pos=452886560
> > pkt_size=1152
> > sample_fmt=s16p
> > nb_samples=1152
> > channels=2
> > channel_layout=stereo
> > [/FRAME]
> > [FRAME]
> > media_type=audio
> > stream_index=1
> > key_frame=1
> > pkt_pts=37940220
> > pkt_pts_time=421.558000
> > pkt_dts=37940220
> > pkt_dts_time=421.558000
> > best_effort_timestamp=37940220
> > best_effort_timestamp_time=421.558000
> > pkt_duration=2160
> > pkt_duration_time=0.024000
> > pkt_pos=452937760
> > pkt_size=1152
> > sample_fmt=s16p
> > nb_samples=1152
> > channels=2
> > channel_layout=stereo
> > [/FRAME]
> > [FRAME]
> > media_type=audio
> > stream_index=1
> > key_frame=1
> > pkt_pts=37942380
> > pkt_pts_time=421.582000
> > pkt_dts=37942380
> > pkt_dts_time=421.582000
> > best_effort_timestamp=37942380
> > best_effort_timestamp_time=421.582000
> > pkt_duration=2160
> > pkt_duration_time=0.024000
> > pkt_pos=N/A
> > pkt_size=1152
> > sample_fmt=s16p
> > nb_samples=1152
> > channels=2
> > channel_layout=stereo
> > [/FRAME]
> > [FRAME]
> > media_type=audio
> > stream_index=1
> > key_frame=1
> > pkt_pts=37944540
> > pkt_pts_time=421.606000
> > pkt_dts=37944540
> > pkt_dts_time=421.606000
> > best_effort_timestamp=37944540
> > best_effort_timestamp_time=421.606000
> > pkt_duration=2160
> > pkt_duration_time=0.024000
> > pkt_pos=452964384
> > pkt_size=1152
> > sample_fmt=s16p
> > nb_samples=1152
> > channels=2
> > channel_layout=stereo
> > [/FRAME]
> > [FRAME]
> > media_type=video
> > stream_index=0
> > key_frame=0
> > pkt_pts=37948467
> > pkt_pts_time=421.649633
> > pkt_dts=N/A
> > pkt_dts_time=N/A
> > best_effort_timestamp=37948467
> > best_effort_timestamp_time=421.649633
> > pkt_duration=3003
> > pkt_duration_time=0.033367
> > pkt_pos=452798496
> > pkt_size=49492
> > width=720
> > height=480
> > pix_fmt=yuv420p
> > sample_aspect_ratio=32:27
> > pict_type=P
> > coded_picture_number=12628
> > display_picture_number=0
> > interlaced_frame=1
> > top_field_first=1
> > repeat_pict=0
> > [/FRAME]
> > [AVIOContext @ 0x7feafb521500] Statistics: 466043248 bytes read, 6 seeks
> >
> > I'm not sure if this is FFprobe issue or content issue. If content issue,
> > how could I do further investigation and relay the information to content
> > provider?.
> >
>
> Hi fellow FFmpeg users,
>
> Do you have comment/suggestion that I can do to share more info about the
> issue?
>
> -wesley
>
> >
> > Thanks,
> > Wesley
> >
> _______________________________________________
> ffmpeg-user mailing list
> ffmpeg-user at ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
--
基于实干的理想主义
More information about the ffmpeg-user
mailing list