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Autres articles (74)

Le profil des utilisateurs

12 avril 2011, par kent1

Chaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
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Configurer la prise en compte des langues

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Accéder à la configuration et ajouter des langues prises en compte
Afin de configurer la prise en compte de nouvelles langues, il est nécessaire de se rendre dans la partie "Administrer" du site.
De là, dans le menu de navigation, vous pouvez accéder à une partie "Gestion des langues" permettant d’activer la prise en compte de nouvelles langues.
Chaque nouvelle langue ajoutée reste désactivable tant qu’aucun objet n’est créé dans cette langue. Dans ce cas, elle devient grisée dans la configuration et (...)
XMP PHP

13 mai 2011, par kent1

Dixit Wikipedia, XMP signifie :
Extensible Metadata Platform ou XMP est un format de métadonnées basé sur XML utilisé dans les applications PDF, de photographie et de graphisme. Il a été lancé par Adobe Systems en avril 2001 en étant intégré à la version 5.0 d’Adobe Acrobat.
Étant basé sur XML, il gère un ensemble de tags dynamiques pour l’utilisation dans le cadre du Web sémantique.
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1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ... | 25

Sur d’autres sites (8446)

ffmpeg seek calculating wrong byte range ?

12 mars 2020, par user4455

I’m running into an issue while trying to extract thumbnails from a movie file at a specific timestamp. Generally I’ve had no issues with this, but I’ve come across a set of movie files that are getting an error about the byte range requested (416 Requested Range Not Satisfiable).

The odd thing is that the server is correctly returning the content length in the partial content request, yet when it requests the movie file it requests a length that exceeds that.

This is a bit over my head, so I’m not sure what could be happening here. Any insight would be great.

The Command :

/usr/bin/ffmpeg -y -ss 1400 -i 'https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4' -qscale:v 2 -f image2 -vframes 1 -filter:v 'scale=192:108' -loglevel debug /data/www/storage/test.jpg 2>&amp;1

The Error :

[https @ 0x22e1e00] header='HTTP/1.1 416 Requested Range Not Satisfiable'

[https @ 0x22e1e00] http_code=416

[https @ 0x22e1e00] HTTP error 416 Requested Range Not Satisfiable

Source File Size :

1776706045 bytes

Source Content Duration :

2897.624271

Partial Content Request :

[https @ 0x22e1e00] header='HTTP/1.1 206 Partial Content'

[https @ 0x22e1e00] http_code=206

[https @ 0x22e1e00] header='x-amz-id-2: 4J1pgHExIUA0GxIxSBmGJjrRqliHbsIjXeuGzVfTlaaoVXbyZI5FQNma8fGaifcovkXfxJev5yU='

[https @ 0x22e1e00] header='x-amz-request-id: 78B3BDBB0356EF40'

[https @ 0x22e1e00] header='Date: Wed, 16 Dec 2015 23:51:29 GMT'

[https @ 0x22e1e00] header='x-amz-meta-content-length: 2898'

[https @ 0x22e1e00] header='x-amz-meta-cb-modifiedtime: Tue, 15 Dec 2015 17:59:51 GMT'

[https @ 0x22e1e00] header='Last-Modified: Wed, 16 Dec 2015 23:44:59 GMT'

[https @ 0x22e1e00] header='ETag: "6341a8022630667a8070a83575e542e7-27"'

[https @ 0x22e1e00] header='Accept-Ranges: bytes'

[https @ 0x22e1e00] header='Content-Range: bytes 0-1776706044/1776706045'

[https @ 0x22e1e00] header='Content-Type: video/mp4'

[https @ 0x22e1e00] header='Content-Length: 1776706045'

[https @ 0x22e1e00] header='Server: AmazonS3'

[https @ 0x22e1e00] header='Connection: close'

FFmpeg Request :

request: GET /my-bucket/mymoviefile.mp4 HTTP/1.1

User-Agent: Lavf/56.25.101

Accept: */*

Range: bytes=1781732960-

Connection: close

Host: s3-us-west-2.amazonaws.com

Icy-MetaData: 1

Entire Log :

# /usr/bin/ffmpeg -y -ss 1400 -i 'https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4' -qscale:v 2 -f image2 -vframes 1 -filter:v 'scale=192:108' -loglevel debug /data/www/storage/test.jpg 2>&amp;1

ffmpeg version 2.6.4 Copyright (c) 2000-2015 the FFmpeg developers

  built with gcc 4.9.2 (Debian 4.9.2-10)

  configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector-strong -Wformat -Werror=format-security ' --extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-libvpx --enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter --enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/x86_64-linux-gnu --disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl --enable-libass --enable-libopus --enable-fontconfig --enable-libpulse --disable-mips32r2 --disable-mipsdspr1 --disable-mipsdspr2 --enable-libvidstab --enable-libzvbi --enable-avresample --disable-htmlpages --disable-podpages --enable-libutvideo --enable-libfdk-aac --enable-libx265 --enable-libiec61883 --enable-vaapi --enable-libdc1394 --disable-altivec --shlibdir=/usr/lib/x86_64-linux-gnu

  libavutil      54. 20.100 / 54. 20.100

  libavcodec     56. 26.100 / 56. 26.100

  libavformat    56. 25.101 / 56. 25.101

  libavdevice    56.  4.100 / 56.  4.100

  libavfilter     5. 11.102 /  5. 11.102

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

  libswscale      3.  1.101 /  3.  1.101

  libswresample   1.  1.100 /  1.  1.100

  libpostproc    53.  3.100 / 53.  3.100

Splitting the commandline.

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

Reading option '-ss' ... matched as option 'ss' (set the start time offset) with argument '1400'.

Reading option '-i' ... matched as input file with argument 'https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4'.

Reading option '-qscale:v' ... matched as option 'qscale' (use fixed quality scale (VBR)) with argument '2'.

Reading option '-f' ... matched as option 'f' (force format) with argument 'image2'.

Reading option '-vframes' ... matched as option 'vframes' (set the number of video frames to output) with argument '1'.

Reading option '-filter:v' ... matched as option 'filter' (set stream filtergraph) with argument 'scale=192:108'.

Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.

Reading option '/data/www/storage/test.jpg' ... matched as output file.

Finished splitting the commandline.

Parsing a group of options: global .

Applying option y (overwrite output files) with argument 1.

Applying option loglevel (set logging level) with argument debug.

Successfully parsed a group of options.

Parsing a group of options: input file https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4.

Applying option ss (set the start time offset) with argument 1400.

Successfully parsed a group of options.

Opening an input file: https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4.

[https @ 0x22e1e00] request: GET /my-bucket/mymoviefile.mp4 HTTP/1.1

User-Agent: Lavf/56.25.101

Accept: */*

Range: bytes=0-

Connection: close

Host: s3-us-west-2.amazonaws.com

Icy-MetaData: 1





[https @ 0x22e1e00] header='HTTP/1.1 206 Partial Content'

[https @ 0x22e1e00] http_code=206

[https @ 0x22e1e00] header='x-amz-id-2: 4J1pgHExIUA0GxIxSBmGJjrRqliHbsIjXeuGzVfTlaaoVXbyZI5FQNma8fGaifcovkXfxJev5yU='

[https @ 0x22e1e00] header='x-amz-request-id: 78B3BDBB0356EF40'

[https @ 0x22e1e00] header='Date: Wed, 16 Dec 2015 23:51:29 GMT'

[https @ 0x22e1e00] header='x-amz-meta-content-length: 2898'

[https @ 0x22e1e00] header='x-amz-meta-cb-modifiedtime: Tue, 15 Dec 2015 17:59:51 GMT'

[https @ 0x22e1e00] header='Last-Modified: Wed, 16 Dec 2015 23:44:59 GMT'

[https @ 0x22e1e00] header='ETag: "6341a8022630667a8070a83575e542e7-27"'

[https @ 0x22e1e00] header='Accept-Ranges: bytes'

[https @ 0x22e1e00] header='Content-Range: bytes 0-1776706044/1776706045'

[https @ 0x22e1e00] header='Content-Type: video/mp4'

[https @ 0x22e1e00] header='Content-Length: 1776706045'

[https @ 0x22e1e00] header='Server: AmazonS3'

[https @ 0x22e1e00] header='Connection: close'

[https @ 0x22e1e00] header=''

[mov,mp4,m4a,3gp,3g2,mj2 @ 0x22e1740] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100

[mov,mp4,m4a,3gp,3g2,mj2 @ 0x22e1740] ISO: File Type Major Brand: mp42

[mov,mp4,m4a,3gp,3g2,mj2 @ 0x22e1740] Before avformat_find_stream_info() pos: 1647960 bytes read:1652200 seeks:0

[h264 @ 0x22e92c0] no picture

[mov,mp4,m4a,3gp,3g2,mj2 @ 0x22e1740] All info found

[mov,mp4,m4a,3gp,3g2,mj2 @ 0x22e1740] After avformat_find_stream_info() pos: 1862326 bytes read:1878504 seeks:0 frames:16

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4':

  Metadata:

    major_brand     : mp42

    minor_version   : 1

    compatible_brands: isommp41avc1

    creation_time   : 2015-11-18 02:34:41

  Duration: 00:48:17.70, start: 0.000000, bitrate: 4905 kb/s

    Stream #0:0(und), 15, 1/2997: Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, left), 1920x1080 (1920x1088) [SAR 1:1 DAR 16:9], 1001/60000, 9994 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 59.94 tbc (default)

    Metadata:

      creation_time   : 2015-11-18 02:34:41

      handler_name    : ?Apple Video Media Handler

    Stream #0:1(und), 1, 1/48000: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 192 kb/s (default)

    Metadata:

      creation_time   : 2015-11-18 02:34:41

      handler_name    : ?Apple Sound Media Handler

Successfully opened the file.

Parsing a group of options: output file /data/www/storage/test.jpg.

Applying option qscale:v (use fixed quality scale (VBR)) with argument 2.

Applying option f (force format) with argument image2.

Applying option vframes (set the number of video frames to output) with argument 1.

Applying option filter:v (set stream filtergraph) with argument scale=192:108.

Successfully parsed a group of options.

Opening an output file: /data/www/storage/test.jpg.

Successfully opened the file.

detected 2 logical cores

[Parsed_scale_0 @ 0x22cd4c0] Setting 'w' to value '192'

[Parsed_scale_0 @ 0x22cd4c0] Setting 'h' to value '108'

[Parsed_scale_0 @ 0x22cd4c0] Setting 'flags' to value '0x4'

[Parsed_scale_0 @ 0x22cd4c0] w:192 h:108 flags:'0x4' interl:0

[graph 0 input from stream 0:0 @ 0x22ccfe0] Setting 'video_size' to value '1920x1080'

[graph 0 input from stream 0:0 @ 0x22ccfe0] Setting 'pix_fmt' to value '0'

[graph 0 input from stream 0:0 @ 0x22ccfe0] Setting 'time_base' to value '1/2997'

[graph 0 input from stream 0:0 @ 0x22ccfe0] Setting 'pixel_aspect' to value '1/1'

[graph 0 input from stream 0:0 @ 0x22ccfe0] Setting 'sws_param' to value 'flags=2'

[graph 0 input from stream 0:0 @ 0x22ccfe0] Setting 'frame_rate' to value '2997/100'

[graph 0 input from stream 0:0 @ 0x22ccfe0] w:1920 h:1080 pixfmt:yuv420p tb:1/2997 fr:2997/100 sar:1/1 sws_param:flags=2

[format @ 0x2798640] compat: called with args=[yuvj420p|yuvj422p|yuvj444p]

[format @ 0x2798640] Setting 'pix_fmts' to value 'yuvj420p|yuvj422p|yuvj444p'

[AVFilterGraph @ 0x22cda60] query_formats: 5 queried, 4 merged, 0 already done, 0 delayed

[Parsed_scale_0 @ 0x22cd4c0] picking yuvj420p out of 3 ref:yuv420p alpha:0

[swscaler @ 0x22c3c80] deprecated pixel format used, make sure you did set range correctly

[Parsed_scale_0 @ 0x22cd4c0] w:1920 h:1080 fmt:yuv420p sar:1/1 -> w:192 h:108 fmt:yuvj420p sar:1/1 flags:0x4

[mjpeg @ 0x2854e20] intra_quant_bias = 96 inter_quant_bias = 0

[mjpeg @ 0x28716c0] intra_quant_bias = 96 inter_quant_bias = 0

[mjpeg @ 0x2795320] intra_quant_bias = 96 inter_quant_bias = 0

Output #0, image2, to '/data/www/storage/test.jpg':

  Metadata:

    major_brand     : mp42

    minor_version   : 1

    compatible_brands: isommp41avc1

    encoder         : Lavf56.25.101

    Stream #0:0(und), 0, 100/2997: Video: mjpeg, yuvj420p(pc, left), 192x108 [SAR 1:1 DAR 16:9], 100/2997, q=2-31, 200 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc (default)

    Metadata:

      creation_time   : 2015-11-18 02:34:41

      handler_name    : ?Apple Video Media Handler

      encoder         : Lavc56.26.100 mjpeg

Stream mapping:

  Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))

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

[https @ 0x22e1e00] request: GET /my-bucket/mymoviefile.mp4 HTTP/1.1

User-Agent: Lavf/56.25.101

Accept: */*

Range: bytes=1781732960-

Connection: close

Host: s3-us-west-2.amazonaws.com

Icy-MetaData: 1





[https @ 0x22e1e00] header='HTTP/1.1 416 Requested Range Not Satisfiable'

[https @ 0x22e1e00] http_code=416

[https @ 0x22e1e00] HTTP error 416 Requested Range Not Satisfiable

[mov,mp4,m4a,3gp,3g2,mj2 @ 0x22e1740] stream 0, offset 0x6a331660: partial file

https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4: Invalid data found when processing input

[output stream 0:0 @ 0x22d7500] EOF on sink link output stream 0:0:default.

No more output streams to write to, finishing.

frame=    0 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.00 bitrate=N/A

video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

Input file #0 (https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4):

  Input stream #0:0 (video): 0 packets read (0 bytes); 0 frames decoded;

  Input stream #0:1 (audio): 0 packets read (0 bytes);

  Total: 0 packets (0 bytes) demuxed

Output file #0 (/data/www/storage/test.jpg):

  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 @ 0x27ab100] Statistics: 1878504 bytes read, 0 seeks

FFprobe Result :

# /usr/bin/ffprobe -show_format -show_streams -i 'https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4'

ffprobe version 2.6.4 Copyright (c) 2007-2015 the FFmpeg developers

  built with gcc 4.9.2 (Debian 4.9.2-10)

  configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector-strong -Wformat -Werror=format-security ' --extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-libvpx --enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter --enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/x86_64-linux-gnu --disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl --enable-libass --enable-libopus --enable-fontconfig --enable-libpulse --disable-mips32r2 --disable-mipsdspr1 --disable-mipsdspr2 --enable-libvidstab --enable-libzvbi --enable-avresample --disable-htmlpages --disable-podpages --enable-libutvideo --enable-libfdk-aac --enable-libx265 --enable-libiec61883 --enable-vaapi --enable-libdc1394 --disable-altivec --shlibdir=/usr/lib/x86_64-linux-gnu

  libavutil      54. 20.100 / 54. 20.100

  libavcodec     56. 26.100 / 56. 26.100

  libavformat    56. 25.101 / 56. 25.101

  libavdevice    56.  4.100 / 56.  4.100

  libavfilter     5. 11.102 /  5. 11.102

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

  libswscale      3.  1.101 /  3.  1.101

  libswresample   1.  1.100 /  1.  1.100

  libpostproc    53.  3.100 / 53.  3.100

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4':

  Metadata:

    major_brand     : mp42

    minor_version   : 1

    compatible_brands: isommp41avc1

    creation_time   : 2015-11-18 02:34:41

  Duration: 00:48:17.70, start: 0.000000, bitrate: 4905 kb/s

    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv), 1920x1080 [SAR 1:1 DAR 16:9], 9994 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 59.94 tbc (default)

    Metadata:

      creation_time   : 2015-11-18 02:34:41

      handler_name    : ?Apple Video Media Handler

    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 192 kb/s (default)

    Metadata:

      creation_time   : 2015-11-18 02:34:41

      handler_name    : ?Apple Sound Media Handler

[STREAM]

index=0

codec_name=h264

codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10

profile=High

codec_type=video

codec_time_base=1001/60000

codec_tag_string=avc1

codec_tag=0x31637661

width=1920

height=1080

has_b_frames=1

sample_aspect_ratio=1:1

display_aspect_ratio=16:9

pix_fmt=yuv420p

level=40

color_range=tv

color_space=unknown

color_transfer=unknown

color_primaries=unknown

chroma_location=left

timecode=N/A

refs=3

is_avc=1

nal_length_size=4

id=N/A

r_frame_rate=2997/100

avg_frame_rate=2997/100

time_base=1/2997

start_pts=0

start_time=0.000000

duration_ts=8684300

duration=2897.664331

bit_rate=9994429

max_bit_rate=N/A

bits_per_raw_sample=8

nb_frames=86843

nb_read_frames=N/A

nb_read_packets=N/A

DISPOSITION:default=1

DISPOSITION:dub=0

DISPOSITION:original=0

DISPOSITION:comment=0

DISPOSITION:lyrics=0

DISPOSITION:karaoke=0

DISPOSITION:forced=0

DISPOSITION:hearing_impaired=0

DISPOSITION:visual_impaired=0

DISPOSITION:clean_effects=0

DISPOSITION:attached_pic=0

TAG:creation_time=2015-11-18 02:34:41

TAG:language=und

TAG:handler_name=Apple Video Media Handler

[/STREAM]

[STREAM]

index=1

codec_name=aac

codec_long_name=AAC (Advanced Audio Coding)

profile=LC

codec_type=audio

codec_time_base=1/48000

codec_tag_string=mp4a

codec_tag=0x6134706d

sample_fmt=fltp

sample_rate=48000

channels=2

channel_layout=stereo

bits_per_sample=0

id=N/A

r_frame_rate=0/0

avg_frame_rate=0/0

time_base=1/48000

start_pts=0

start_time=0.000000

duration_ts=139085965

duration=2897.624271

bit_rate=192002

max_bit_rate=N/A

bits_per_raw_sample=N/A

nb_frames=135828

nb_read_frames=N/A

nb_read_packets=N/A

DISPOSITION:default=1

DISPOSITION:dub=0

DISPOSITION:original=0

DISPOSITION:comment=0

DISPOSITION:lyrics=0

DISPOSITION:karaoke=0

DISPOSITION:forced=0

DISPOSITION:hearing_impaired=0

DISPOSITION:visual_impaired=0

DISPOSITION:clean_effects=0

DISPOSITION:attached_pic=0

TAG:creation_time=2015-11-18 02:34:41

TAG:language=und

TAG:handler_name=Apple Sound Media Handler

[/STREAM]

[FORMAT]

filename=https://s3-us-west-2.amazonaws.com/my-bucket/mymoviefile.mp4

nb_streams=2

nb_programs=0

format_name=mov,mp4,m4a,3gp,3g2,mj2

format_long_name=QuickTime / MOV

start_time=0.000000

duration=2897.695000

size=1776706045

bit_rate=4905156

probe_score=100

TAG:major_brand=mp42

TAG:minor_version=1

TAG:compatible_brands=isommp41avc1

TAG:creation_time=2015-11-18 02:34:41

[/FORMAT]

ffmpeg - Take Frame Accurate Screenshot

20 septembre 2019, par mike

trying to find a way to take frame accurate screenshots with ffmpeg WITHOUT re-encoding the video.

When I use :

ffmpeg -ss -i input -vframes 1 -q:v 2 output.jpg

with -ss being hh:mm:ss.ms, not matter how I specify the milliseconds, it is never frame accurate with this command. it seems to be landing on the nearest keyframe (which is not accurate enough for my application).

So, my question is :

Without re-encoding the video (ergo specifying -ss flag AFTER the input) is there any way to pull frame accurate screenshots via ffmpeg ?

If not, is there another solution on Windows that would allow that via command line ?

Thanks !

ffmpeg log report part 1 :

ffmpeg started on 2018-01-22 at 02:52:59

Report written to "ffmpeg-20180122-025259.log"

Command line:

"D:\\ffmpeg-3.4.1-win64-static\\bin\\ffmpeg.exe" -ss 1:31:25.9885 -i "V:\\Test\\BDMV\\STREAM\\00000.m2ts" -vframes 1 -q:v 2 -report output.jpg

ffmpeg version N-89674-g57d0c24132 Copyright (c) 2000-2018 the FFmpeg developers

  built with gcc 7.2.0 (GCC)

  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-amf --enable-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth --enable-libmfx

  libavutil      56.  7.100 / 56.  7.100

  libavcodec     58.  9.100 / 58.  9.100

  libavformat    58.  3.100 / 58.  3.100

  libavdevice    58.  0.100 / 58.  0.100

  libavfilter     7.  8.100 /  7.  8.100

  libswscale      5.  0.101 /  5.  0.101

  libswresample   3.  0.101 /  3.  0.101

  libpostproc    55.  0.100 / 55.  0.100

Splitting the commandline.

Reading option '-ss' ... matched as option 'ss' (set the start time offset) with argument '1:31:25.9885'.

Reading option '-i' ... matched as input url with argument 'V:\Test\BDMV\STREAM\00000.m2ts'.

Reading option '-vframes' ... matched as option 'vframes' (set the number of video frames to output) with argument '1'.

Reading option '-q:v' ... matched as option 'q' (use fixed quality scale (VBR)) with argument '2'.

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

Reading option 'output.jpg' ... matched as output url.

Finished splitting the commandline.

Parsing a group of options: global .

Applying option report (generate a report) with argument 1.

Successfully parsed a group of options.

Parsing a group of options: input url V:\Test\BDMV\STREAM\00000.m2ts.

Applying option ss (set the start time offset) with argument 1:31:25.9885.

Successfully parsed a group of options.

Opening an input file: V:\Test\BDMV\STREAM\00000.m2ts.

[NULL @ 000001e53135a680] Opening 'V:\Test\BDMV\STREAM\00000.m2ts' for reading

[file @ 000001e53135b740] Setting default whitelist 'file,crypto'

[mpegts @ 000001e53135a680] Format mpegts probed with size=2048 and score=50

[mpegts @ 000001e53135a680] stream=0 stream_type=1b pid=1011 prog_reg_desc=HDMV

[mpegts @ 000001e53135a680] stream=1 stream_type=86 pid=1100 prog_reg_desc=HDMV

[mpegts @ 000001e53135a680] stream=2 stream_type=90 pid=1200 prog_reg_desc=HDMV

[mpegts @ 000001e53135a680] Before avformat_find_stream_info() pos: 0 bytes read:32768 seeks:0 nb_streams:3

[mpegts @ 000001e53135a680] parser not found for codec hdmv_pgs_subtitle, packets or times may be invalid.

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[AVBSFContext @ 000001e5313b4380] nal_unit_type: 9, nal_ref_idc: 0

[AVBSFContext @ 000001e5313b4380] nal_unit_type: 7, nal_ref_idc: 3

[AVBSFContext @ 000001e5313b4380] nal_unit_type: 8, nal_ref_idc: 3

[AVBSFContext @ 000001e5313b4380] nal_unit_type: 6, nal_ref_idc: 0

[AVBSFContext @ 000001e5313b4380] nal_unit_type: 6, nal_ref_idc: 0

[AVBSFContext @ 000001e5313b4380] nal_unit_type: 5, nal_ref_idc: 3

[AVBSFContext @ 000001e5313b4380] nal_unit_type: 5, nal_ref_idc: 3

[AVBSFContext @ 000001e5313b4380] nal_unit_type: 5, nal_ref_idc: 3

[AVBSFContext @ 000001e5313b4380] nal_unit_type: 5, nal_ref_idc: 3

[h264 @ 000001e53135c940] nal_unit_type: 9, nal_ref_idc: 0

[h264 @ 000001e53135c940] nal_unit_type: 7, nal_ref_idc: 3

[h264 @ 000001e53135c940] nal_unit_type: 8, nal_ref_idc: 3

[h264 @ 000001e53135c940] nal_unit_type: 6, nal_ref_idc: 0

[h264 @ 000001e53135c940] nal_unit_type: 6, nal_ref_idc: 0

[h264 @ 000001e53135c940] nal_unit_type: 5, nal_ref_idc: 3

[h264 @ 000001e53135c940] nal_unit_type: 5, nal_ref_idc: 3

[h264 @ 000001e53135c940] nal_unit_type: 5, nal_ref_idc: 3

[h264 @ 000001e53135c940] nal_unit_type: 5, nal_ref_idc: 3

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] Format yuv420p chosen by get_format().

[h264 @ 000001e53135c940] Reinit context to 1920x1088, pix_fmt: yuv420p

[h264 @ 000001e53135c940] no picture 

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[h264 @ 000001e53135c940] ct_type:0 pic_struct:0

[mpegts @ 000001e53135a680] max_analyze_duration 7000000 reached at 7008000 microseconds st:1

[mpegts @ 000001e53135a680] rfps: 23.916667 0.014415

[mpegts @ 000001e53135a680] rfps: 23.916667 0.014415

[mpegts @ 000001e53135a680] rfps: 24.000000 0.002352

[mpegts @ 000001e53135a680] rfps: 24.000000 0.007275

[mpegts @ 000001e53135a680] rfps: 48.000000 0.009407

[mpegts @ 000001e53135a680] rfps: 48.000000 0.013337

[mpegts @ 000001e53135a680] rfps: 23.976024 0.000000

[mpegts @ 000001e53135a680] rfps: 23.976024 0.000000

[mpegts @ 000001e53135a680] rfps: 47.952048 0.000000

[mpegts @ 000001e53135a680] rfps: 47.952048 0.000000

[mpegts @ 000001e53135a680] start time for stream 2 is not set in estimate_timings_from_pts

[mpegts @ 000001e53135a680] Could not find codec parameters for stream 2 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)): unspecified size

Consider increasing the value for the 'analyzeduration' and 'probesize' options

[mpegts @ 000001e53135a680] After avformat_find_stream_info() pos: 0 bytes read:2494608 seeks:2 frames:828

[NULL @ 000001e53135c940] nal_unit_type: 7, nal_ref_idc: 3

[NULL @ 000001e53135c940] nal_unit_type: 8, nal_ref_idc: 3

[NULL @ 000001e53135c940] ct_type:0 pic_struct:0

[NULL @ 000001e53135c940] nal_unit_type: 7, nal_ref_idc: 3

[NULL @ 000001e53135c940] nal_unit_type: 8, nal_ref_idc: 3

[NULL @ 000001e53135c940] nal_unit_type: 7, nal_ref_idc: 3

[NULL @ 000001e53135c940] nal_unit_type: 8, nal_ref_idc: 3

[NULL @ 000001e53135c940] ct_type:0 pic_struct:0

[NULL @ 000001e53135c940] nal_unit_type: 7, nal_ref_idc: 3

[NULL @ 000001e53135c940] nal_unit_type: 8, nal_ref_idc: 3

[NULL @ 000001e53135c940] ct_type:0 pic_struct:0

[NULL @ 000001e53135c940] ct_type:0 pic_struct:0

[NULL @ 000001e53135c940] nal_unit_type: 7, nal_ref_idc: 3

[NULL @ 000001e53135c940] nal_unit_type: 8, nal_ref_idc: 3

[NULL @ 000001e53135c940] ct_type:0 pic_struct:0

[NULL @ 000001e53135c940] ct_type:0 pic_struct:0

[NULL @ 000001e53135c940] nal_unit_type: 7, nal_ref_idc: 3

[NULL @ 000001e53135c940] nal_unit_type: 8, nal_ref_idc: 3

[NULL @ 000001e53135c940] ct_type:0 pic_struct:0

[NULL @ 000001e53135c940] ct_type:0 pic_struct:0

[NULL @ 000001e53135c940] nal_unit_type: 7, nal_ref_idc: 3

[NULL @ 000001e53135c940] nal_unit_type: 8, nal_ref_idc: 3

[NULL @ 000001e53135c940] ct_type:0 pic_struct:0

[NULL @ 000001e53135c940] nal_unit_type: 7, nal_ref_idc: 3

[NULL @ 000001e53135c940] nal_unit_type: 8, nal_ref_idc: 3

[NULL @ 000001e53135c940] ct_type:0 pic_struct:0

[NULL @ 000001e53135c940] nal_unit_type: 7, nal_ref_idc: 3

[NULL @ 000001e53135c940] nal_unit_type: 8, nal_ref_idc: 3

[NULL @ 000001e53135c940] ct_type:0 pic_struct:0

[NULL @ 000001e53135c940] nal_unit_type: 7, nal_ref_idc: 3

[NULL @ 000001e53135c940] nal_unit_type: 8, nal_ref_idc: 3

[NULL @ 000001e53135c940] ct_type:0 pic_struct:0

[NULL @ 000001e53135c940] nal_unit_type: 7, nal_ref_idc: 3

[NULL @ 000001e53135c940] nal_unit_type: 8, nal_ref_idc: 3

[NULL @ 000001e53135c940] ct_type:0 pic_struct:0

[NULL @ 000001e53135c940] nal_unit_type: 7, nal_ref_idc: 3

[NULL @ 000001e53135c940] nal_unit_type: 8, nal_ref_idc: 3

[NULL @ 000001e53135c940] ct_type:0 pic_struct:0

[NULL @ 000001e53135c940] nal_unit_type: 7, nal_ref_idc: 3

[NULL @ 000001e53135c940] nal_unit_type: 8, nal_ref_idc: 3

[NULL @ 000001e53135c940] ct_type:0 pic_struct:0

[NULL @ 000001e53135c940] ct_type:0 pic_struct:0

Input #0, mpegts, from 'V:\Test\BDMV\STREAM\00000.m2ts':

  Duration: 01:39:08.15, start: 600.000000, bitrate: 25263 kb/s

  Program 1 

    Stream #0:0[0x1011], 169, 1/90000: Video: h264 (High) (HDMV / 0x564D4448), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc

    Stream #0:1[0x1100], 659, 1/90000: Audio: dts (DTS-HD MA) ([134][0][0][0] / 0x0086), 48000 Hz, stereo, s16p

    Stream #0:2[0x1200], 0, 1/90000: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)

Successfully opened the file.

Why does ffmpeg report different durations ?

18 mai 2012, par kenitech

Source videos : http://www.artworknotavailable.com/tmp/ffmpegtest

Quicktime Pro 7.7.1 Inspector (Win 7) reports the following for the file 2398.mov

4.19MB
H.264
Movie FPS : 23.98
Data Rate : 2.35 mbits/Sec
Duration 14:97

ffmpeg reports the following (see full ffmpeg version info at bottom of post)

ffmpeg -i 2398.mov

Seems stream 1 codec frame rate differs from container frame rate : 47952.00 (47952/1) -> >23.98 (2997/125)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '2398.mov' :
Metadata :
major_brand : qt

minor_version : 537199360
compatible_brands : qt
Duration : 00:00:15.97, start : 0.-963005, bitrate : 2210 kb/s
Stream #0.0(eng) : Audio : aac, 48000 Hz, stereo, s16, 152 kb/s
Stream #0.1(eng) : Video : h264, yuv420p, 848x480, 2060 kb/s, 23.98 fps, 23.98 tbr, 23976 tbn, 47952 tbc

One second longer than what Quicktime reports.

As an experiment I exported this file from Quicktime Pro using the following settings :

Frame Rate : Current
Key Frames : Every 24 frames
Frame Reordering On
Quality : High
Encoding Best
Data Rate : Automatic
Optimized for Download
Output file : qtime-export-2398.mov

Quicktime Inspector reports :

5.62 MB
H.264
Movie FPS : 23.98
Data Rate : 3.15 mbits/Sec
Duration 14:97

ffmpeg now reports :

ffmpeg -i qtime-export-2398.mov

Seems stream 1 codec frame rate differs from container frame rate : 1200.00 (1200/1) -> 23.98 (24000/1001)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'qtime-export-2398.mov' :
Metadata :
major_brand : qt
minor_version : 537199360
compatible_brands : qt
Duration : 00:00:14.96, start : 0.000000, bitrate : 3153 kb/s
Stream #0.0(eng) : Audio : pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
Stream #0.1(eng) : Video : h264, yuv420p, 678x384, 1738 kb/s, 23.98 fps, 23.98 tbr, 600 tbn, 1200 tbc

ffmpeg's report on duration went from 15.97 to 14.96 (I can live with .1)

Is this duration calculated from the bitrate ?

I need to accurately report the duration of uploaded videos as well as convert them to FLV. Can somebody tell me what is going on here and how I might get around this ?

ffmpeg info below. I've tried this on 2 completely different installs/versions of ffmpeg. Same result.

FFmpeg version 0.6.5, Copyright (c) 2000-2010 the FFmpeg developers
built on Jan 29 2012 23:55:02 with gcc 4.1.2 20080704 (Red Hat 4.1.2-51)
configuration : —prefix=/usr —libdir=/usr/lib64 —shlibdir=/usr/lib64 —mandir=/usr/share/man —incdir=/usr/include —disable-avisynth —extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector —param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' —enable-avfilter —enable-avfilter-lavf —enable-libdirac —enable-libfaac —enable-libfaad —enable-libfaadbin —enable-libgsm —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libx264 —enable-gpl —enable-nonfree —enable-postproc —enable-pthreads —enable-shared —enable-swscale —enable-vdpau —enable-version3 —enable-x11grab
libavutil 50.15. 1 / 50.15. 1
libavcodec 52.72. 2 / 52.72. 2
libavformat 52.64. 2 / 52.64. 2
libavdevice 52. 2. 0 / 52. 2. 0
libavfilter 1.19. 0 / 1.19. 0
libswscale 0.11. 0 / 0.11. 0
libpostproc 51. 2. 0 / 51. 2. 0
FFmpeg 0.6.5
libavutil 50.15. 1 / 50.15. 1
libavcodec 52.72. 2 / 52.72. 2
libavformat 52.64. 2 / 52.64. 2
libavdevice 52. 2. 0 / 52. 2. 0
libavfilter 1.19. 0 / 1.19. 0
libswscale 0.11. 0 / 0.11. 0
libpostproc 51. 2. 0 / 51. 2. 0

1 | ... | 2391 | 2392 | 2393 | 2394 | 2395 | 2396 | 2397 | 2398 | 2399 | ... | 2816

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