From: Paul Garlick <pgarlick@tourbillion-technology.com>
To: Laura Lazzati <laura.lazzati.15@gmail.com>
Cc: Guix-devel <guix-devel@gnu.org>
Subject: Re: Video narration
Date: Wed, 17 Apr 2019 23:11:56 +0100 [thread overview]
Message-ID: <30bca313b07d1dc65c73d2e2c4d0e8907144081d.camel@tourbillion-technology.com> (raw)
In-Reply-To: <CAPNLzUNbSyr18WW71LAbzzi6MtR8WLV54skyazhNxUkhi0eOtw@mail.gmail.com>
Hi Laura,
> Can you tell me which players work for you? I tried with my browser
> and it still tells me that the file is corrupt :/
I have tested Parole and Videos media players and Firefox and Midori
browsers. All work except Firefox, which gives the message:
'Video can't be played because the file is corrupt'
Is Firefox the browser you are testing with?
Possibly another tweak to the ffmpeg encoding might be needed to
support Firefox.
> I didn't notice this. Is it possible to make the audio shorter than
> the first duration?
Ah, the expression for duration1 should be:
duration1 (in seconds) = number of frames / 25
What I was thinking was that the cli sessions should end with a short
pause. This will be the case as long as either duration1 is greater
than duration2 or the audio file has a silent section at the end.
If any of the transitions are too abrupt we can add some silence to the
relevant audio file. The command I used for the silent slide in 02-
daily-use2 was:
$ ffmpeg -f lavfi -i anullsrc=r=4800:cl=mono -t <ts> -q:a 9 -c:a
libmp3lame <audiofile>.mp3
This creates an mp3 file with <ts> seconds of silence.
So a one second pause, say, could be concatenated (with ffmpeg) at the
beginning or end of an audio file to improve the transition.
Best regards,
Paul.
next prev parent reply other threads:[~2019-04-17 22:12 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-05 12:52 Video narration Laura Lazzati
2019-03-05 15:14 ` Paul Garlick
2019-03-05 16:27 ` Laura Lazzati
2019-03-15 11:48 ` Paul Garlick
2019-03-15 14:27 ` Laura Lazzati
2019-03-16 3:27 ` Laura Lazzati
2019-03-18 17:07 ` Paul Garlick
2019-03-19 5:00 ` Laura Lazzati
2019-03-19 21:02 ` Laura Lazzati
2019-03-20 12:39 ` Paul Garlick
2019-03-20 13:38 ` Ricardo Wurmus
2019-03-20 16:20 ` Laura Lazzati
2019-03-22 17:11 ` Paul Garlick
2019-03-22 17:35 ` Laura Lazzati
2019-03-22 19:39 ` Paul Garlick
2019-03-24 3:47 ` Laura Lazzati
2019-03-24 10:17 ` Gábor Boskovits
2019-03-24 18:52 ` Laura Lazzati
2019-03-25 12:55 ` Paul Garlick
2019-03-25 22:49 ` Laura Lazzati
2019-03-25 23:16 ` sirgazil
2019-03-26 17:08 ` Paul Garlick
2019-03-26 17:58 ` Laura Lazzati
2019-03-27 21:00 ` Paul Garlick
2019-03-27 22:01 ` Laura Lazzati
2019-03-29 22:32 ` Paul Garlick
2019-03-29 22:45 ` Laura Lazzati
2019-04-01 15:16 ` Paul Garlick
2019-04-01 18:02 ` Laura Lazzati
2019-04-02 8:34 ` Paul Garlick
2019-04-02 18:19 ` Laura Lazzati
2019-04-03 14:05 ` Paul Garlick
2019-04-03 14:25 ` sirgazil
2019-04-03 15:38 ` Gábor Boskovits
2019-04-03 16:45 ` sirgazil
2019-04-03 19:11 ` Laura Lazzati
2019-04-05 14:36 ` Paul Garlick
2019-04-05 18:23 ` Laura Lazzati
2019-04-05 18:49 ` Ricardo Wurmus
2019-04-08 16:19 ` Paul Garlick
2019-04-09 10:46 ` Laura Lazzati
2019-04-09 14:10 ` Paul Garlick
2019-04-17 19:44 ` Laura Lazzati
2019-04-17 22:11 ` Paul Garlick [this message]
2019-04-18 17:12 ` Ludovic Courtès
2019-04-19 12:14 ` Ricardo Wurmus
2019-04-18 17:20 ` Laura Lazzati
2019-04-19 0:25 ` Paul Garlick
2019-04-20 21:11 ` Laura Lazzati
2019-04-22 12:29 ` Paul Garlick
2019-04-22 18:27 ` Laura Lazzati
2019-04-22 22:29 ` Paul Garlick
2019-04-26 22:01 ` Paul Garlick
2019-04-26 22:54 ` Laura Lazzati
2019-04-29 17:53 ` Paul Garlick
2019-04-29 19:50 ` Laura Lazzati
2019-04-29 20:06 ` Paul Garlick
2019-04-29 20:19 ` Laura Lazzati
2019-04-29 22:50 ` Paul Garlick
2019-04-30 8:52 ` Laura Lazzati
2019-04-30 13:22 ` Laura Lazzati
2019-04-30 23:36 ` Paul Garlick
2019-05-01 14:05 ` Laura Lazzati
2019-05-02 21:36 ` Paul Garlick
2019-05-04 19:34 ` Laura Lazzati
2019-05-06 11:22 ` Paul Garlick
2019-05-08 20:47 ` Laura Lazzati
2019-05-08 23:14 ` Paul Garlick
2019-05-09 14:57 ` Laura Lazzati
2019-05-09 17:54 ` Paul Garlick
2019-05-10 19:50 ` Laura Lazzati
2019-05-10 21:54 ` Paul Garlick
2019-05-10 21:58 ` Laura Lazzati
2019-05-10 20:19 ` Gábor Boskovits
2019-05-10 21:57 ` Laura Lazzati
2019-05-10 22:34 ` sirgazil
2019-05-21 2:52 ` Laura Lazzati
2019-05-21 8:29 ` Gábor Boskovits
2019-05-22 12:54 ` Laura Lazzati
2019-05-23 10:14 ` Paul Garlick
2019-05-23 14:07 ` Laura Lazzati
2019-05-23 21:36 ` Paul Garlick
2019-05-25 18:19 ` Laura Lazzati
2019-05-06 13:35 ` Ricardo Wurmus
2019-05-06 20:34 ` Paul Garlick
2019-04-02 17:21 ` Gábor Boskovits
2019-04-02 18:16 ` Laura Lazzati
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