ffplay output

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ffplay output

mohammed bey ahmed khernache
Hello,
could someone explain to me the *ffplay* outputs?
Given a video of 3288 frames. Decoding it with ffplay gives the output
below:
fd=742
aq=0KB
vq=0KB
sq=0B
f=0/0

Best regards.
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Re: ffplay output

Moritz Barsnick
Hi Mohammed,

On Wed, Jul 04, 2018 at 11:00:55 +0200, Mohammed Bey Ahmed Khernache wrote:
> could someone explain to me the *ffplay* outputs?
> Given a video of 3288 frames. Decoding it with ffplay gives the output
> below:
> fd=742
> aq=0KB
> vq=0KB
> sq=0B
> f=0/0

Which can actually be something like this:
   3.23 A-V: -0.018 fd=   0 aq=   11KB vq=   17KB sq=    0B f=0/0

The ffplay docs say:
    Print several playback statistics, in particular show the stream
    duration, the codec parameters, the current position in the stream
    and the audio/video synchronisation drift.

Looking at the source code, it is:
- the playback duration so far ("3.23")
- the timestamp drift between audio and video (if it says "A-V" -
  otherwise the drift between audio or video and master clock)
  ("A-V: -0.018")
- number of frames dropped ("fd=   0")
- the audio, video and subtitle queue sizes ("aq=   11KB", ...)
- the number of incorrect DTS/PTS values so far ("f=0/0")

Hope this helps,
Moritz
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Re: ffplay output

mohammed bey ahmed khernache
Thank you. That's what I really wanted.

‚Äč
----------------------------------------------------------------------------
Mohammed BEY AHMED KHERNACHE
PhD student
Lab-STICC / CNRS UMR 6285
University of Southern Brittany, Lorient, France
Tel: +33-783-700-185
Email: [hidden email]
----------------------------------------------------------------------------



On Wed, Jul 4, 2018 at 1:42 PM Moritz Barsnick <[hidden email]> wrote:

> Hi Mohammed,
>
> On Wed, Jul 04, 2018 at 11:00:55 +0200, Mohammed Bey Ahmed Khernache wrote:
> > could someone explain to me the *ffplay* outputs?
> > Given a video of 3288 frames. Decoding it with ffplay gives the output
> > below:
> > fd=742
> > aq=0KB
> > vq=0KB
> > sq=0B
> > f=0/0
>
> Which can actually be something like this:
>    3.23 A-V: -0.018 fd=   0 aq=   11KB vq=   17KB sq=    0B f=0/0
>
> The ffplay docs say:
>     Print several playback statistics, in particular show the stream
>     duration, the codec parameters, the current position in the stream
>     and the audio/video synchronisation drift.
>
> Looking at the source code, it is:
> - the playback duration so far ("3.23")
> - the timestamp drift between audio and video (if it says "A-V" -
>   otherwise the drift between audio or video and master clock)
>   ("A-V: -0.018")
> - number of frames dropped ("fd=   0")
> - the audio, video and subtitle queue sizes ("aq=   11KB", ...)
> - the number of incorrect DTS/PTS values so far ("f=0/0")
>
> Hope this helps,
> Moritz
> _______________________________________________
> ffmpeg-user mailing list
> [hidden email]
> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
> To unsubscribe, visit link above, or email
> [hidden email] with subject "unsubscribe".
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