[FFmpeg-trac] #1573(undetermined:new): Enhancing -ss option

FFmpeg trac at avcodec.org
Sun Oct 7 03:28:58 CEST 2012

#1573: Enhancing -ss option
             Reporter:  burek        |                    Owner:
                 Type:  enhancement  |                   Status:  new
             Priority:  wish         |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0

Comment (by jbvsmo):

 Hi, I'm working on a project with multiple ffmpeg processes converting
 parts of a video at the same time and the speedups I'm achieving are

 But, for this to work, I rely on fast seek, otherwise the slow seek makes
 the method useless. The problem is that

 ffmpeg -ss time -i input -ss 0 output

 doesn't always give me the right frame!

 I found in the mail list ([http://ffmpeg.org/pipermail/ffmpeg-
 user/2012-August/008767.html here] and [http://ffmpeg.org/pipermail
 /ffmpeg-user/2012-August/008769.html here]) that ffmpeg may reach a frame
 after the specified time and never go back.

 Are there any chances of a really accurate and fast seek in a single
 option? BTW, seek by frame number is possible?

 The ffmpeg version I'm using is from git on September 12 (2 weeks before
 ffmpeg 1.0).

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1573#comment:5>
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