[FFmpeg-trac] #4126(avformat:new): FFMPEG is very slow when trying to use a http url as source
FFmpeg
trac at avcodec.org
Fri Nov 21 02:45:57 CET 2014
#4126: FFMPEG is very slow when trying to use a http url as source
-------------------------------------+-------------------------------------
Reporter: srikanth | Type: defect
Status: new | Priority: normal
Component: avformat | Version:
Keywords: network, | unspecified
performance | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Whenever I try to use a HTTP url as source for trancoding/muxing, the task
completes successfully, but the time taken is an order of magnitude longer
that just downloading the file and performing the operation locally.
I want to extract audio streams from sources online and I do not have the
disk space locally to download the entire file. Is there any faster way to
do this?
How to reproduce:
{{{
ffmpeg -i
http://ftp.nluug.nl/pub/graphics/blender/demo/movies/Sintel.2010.720p.mkv
-vn test.wav
ffmpeg version 2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
built on Oct 14 2014 15:31:40 with gcc 4.6 (Ubuntu/Linaro
4.6.3-1ubuntu5)
configuration:
libavutil 54. 7.100 / 54. 7.100
libavcodec 56. 1.100 / 56. 1.100
libavformat 56. 4.101 / 56. 4.101
libavdevice 56. 0.100 / 56. 0.100
libavfilter 5. 1.100 / 5. 1.100
libswscale 3. 0.100 / 3. 0.100
libswresample 1. 1.100 / 1. 1.100
}}}
Patches should be submitted to the ffmpeg-devel mailing list and not this
bug tracker.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/4126>
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