[FFmpeg-trac] #1621(undetermined:new): Converted flash video has longer duration than the source
FFmpeg
trac at avcodec.org
Thu Aug 16 17:36:48 CEST 2012
#1621: Converted flash video has longer duration than the source
-------------------------------------+-------------------------------------
Reporter: agowad | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: unspecified | undetermined
Keywords: | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
-------------------------------------+-------------------------------------
Comment (by agowad):
I just tried (added -an):
{{{
ffmpeg.exe -i "fishermans_friendCD_720_xvid.avi" -an -ar 44100
"fishermans_friendCD_720_xvid_TMP.flv"
}}}
And the output flash duration was the same as input!
{{{
ffprobe.exe -show_streams fishermans_friendCD_720_xvid_TMP.flv
}}}
{{{
ffprobe version N-43594-gf0896a6 Copyright (c) 2007-2012 the FFmpeg
developers
built on Aug 15 2012 21:25:48 with gcc 4.7.1 (GCC)
configuration: --enable-gpl --enable-version3 --disable-pthreads
--enable-runtime-cpudetect --enable-avisynth --enable-bzlib --enable-
frei0r --enable-libass -
-enable-libcelt --enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libnut
--enable-libopenj
peg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-
libtheora --enable-libutvideo --enable-libvo-aacenc --enable-libvo-
amrwbenc --enable-li
bvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid
--enable-zlib
libavutil 51. 69.100 / 51. 69.100
libavcodec 54. 52.100 / 54. 52.100
libavformat 54. 23.101 / 54. 23.101
libavdevice 54. 2.100 / 54. 2.100
libavfilter 3. 9.100 / 3. 9.100
libswscale 2. 1.101 / 2. 1.101
libswresample 0. 15.100 / 0. 15.100
libpostproc 52. 0.100 / 52. 0.100
Input #0, flv, from 'fishermans_friendCD_720_xvid_TMP.flv':
Metadata:
encoder : Lavf54.22.100
Duration: 00:00:09.96, start: 0.000000, bitrate: 1281 kb/s
Stream #0:0: Video: flv1, yuv420p, 1280x720, 200 kb/s, 25 tbr, 1k tbn,
1k tbc
[STREAM]
index=0
codec_name=flv
codec_long_name=FLV / Sorenson Spark / Sorenson H.263 (Flash Video)
profile=unknown
codec_type=video
codec_time_base=1/1000
codec_tag_string=[0][0][0][0]
codec_tag=0x0000
width=1280
height=720
has_b_frames=0
sample_aspect_ratio=0:1
display_aspect_ratio=0:1
pix_fmt=yuv420p
level=-99
timecode=N/A
id=N/A
r_frame_rate=25/1
avg_frame_rate=0/0
time_base=1/1000
start_time=0.000000
duration=N/A
bit_rate=200000
nb_frames=N/A
nb_read_frames=N/A
nb_read_packets=N/A
[/STREAM]
}}}
From ffmpeg documentation I can read:
{{{
‘-an (output)’
Disable audio recording.
}}}
To be honest, I don't understand that, but is that the solution to my
problem?
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1621#comment:10>
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