On 31-10-2019 08:15 AM, arthur brogard via ffmpeg-user wrote:
I was trying to find a place where I could view the whole thread at once and
found a post that asked me, I think, to find out what 'top posting' means and
to avoid it.
Well I've failed to find out. What I do is hit 'reply' in
Hi,
I have one question:
does mp4 support timed metadata, such as id3 timed metadata?
Thanks!
Regards
Andrew
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I was trying to find a place where I could view the whole thread at once and
found a post that asked me, I think, to find out what 'top posting' means and
to avoid it.
Well I've failed to find out. What I do is hit 'reply' in yahoo mail. Is that
okay or wrong?
:)
> Only if you also change the audio speed.
>
> The simpler solution is to force an output framerate instead of an
> input video speed.
>
> Carl Eugen
Simpler maybe… but wouldn’t this result in a frame literally being dropped
anytime the drop frame timecode "skips”? And maybe async option could
Am Mi., 30. Okt. 2019 um 17:31 Uhr schrieb Ted Park :
>
> > Forcing the video speed will lead to A/V desync unless the input is
> > video-only, the input has already the chosen speed or there is a bug in the
> > transcoding application.
> > Since changing the video speed with the input option r
You've answered before I got to check for desync.
Okay then. So what can I use? This is the only command I've found so far that
even runs.
My googling seems to indicate there's a chance this can't be done in ffmpeg in
one hit. I'm not at all clear on it but I get the idea that we have to
> Forcing the video speed will lead to A/V desync unless the input is
> video-only, the input has already the chosen speed or there is a bug in the
> transcoding application.
> Since changing the video speed with the input option r is a very hacking
> approach in FFmpeg, it does not always
> Am 30.10.2019 um 11:27 schrieb Reindl Harald :
>
>
>
> Am 30.10.19 um 11:14 schrieb Carl Eugen Hoyos:
>>> Am 30.10.2019 um 10:48 schrieb arthur brogard via ffmpeg-user
>>> :
>>>
>>> ffmpeg -y -r 25 -i infile.mp4 outfile.mp4
>>
>> This will almost certainly lead to A/V desync (if not,
Am 30.10.19 um 11:14 schrieb Carl Eugen Hoyos:
>> Am 30.10.2019 um 10:48 schrieb arthur brogard via ffmpeg-user
>> :
>>
>> ffmpeg -y -r 25 -i infile.mp4 outfile.mp4
>
> This will almost certainly lead to A/V desync (if not, then only because of a
> bug).
why?
> Am 30.10.2019 um 10:48 schrieb arthur brogard via ffmpeg-user
> :
>
> ffmpeg -y -r 25 -i infile.mp4 outfile.mp4
This will almost certainly lead to A/V desync (if not, then only because of a
bug).
Please find out what top-posting means and avoid it here, Carl Eugen
Well it looks like it was the frame rate alright.
I now have two of the vids I couldn't run before are running.
Just how successful it is beyond that I don't know yet. The sound could
possibly go out of sync or something I guess.
Because one of them was a176,280kB file reporting a time length
On 10/30/19, Michael Koch wrote:
> Am 30.10.2019 um 10:07 schrieb Michael Koch:
>> Hi,
>>
>> I have a video which looks fine in FFplay and also in VLC, but after
>> uploading to Facebook the first frame is corrupted, as can be seen
>> here:
On Wed, Oct 30, 2019 at 10:27:47 +0100, Michael Koch wrote:
> P.S. Is it possible to show the first frame with FFplay and immediately
> pause?
It's not the first frame, as I suggested, but anyway: Just extract it
and have a look:
$ ffmpeg -ss 0 -i filetocheck.mp4 -frames:v 1 firstframe.png
Am 30.10.2019 um 10:07 schrieb Michael Koch:
Hi,
I have a video which looks fine in FFplay and also in VLC, but after
uploading to Facebook the first frame is corrupted, as can be seen
here: https://www.facebook.com/12490928195/videos/2597554727004199/
I don't know if this is a problem in
On Wed, Oct 30, 2019 at 10:07:58 +0100, Michael Koch wrote:
> Hi,
>
> I have a video which looks fine in FFplay and also in VLC, but after
> uploading to Facebook the first frame is corrupted, as can be seen here:
> https://www.facebook.com/12490928195/videos/2597554727004199/
> I don't know
Try using a different pixel format, say yuv420p. Add -pix_fmt yuv420p
before output file in the command line.
On Wed, Oct 30, 2019 at 10:08 AM Michael Koch
wrote:
> Hi,
>
> I have a video which looks fine in FFplay and also in VLC, but after
> uploading to Facebook the first frame is corrupted,
On Wed, 30 Oct 2019, 03:40 Mark Filipak, <
markfilipak.windows+ffm...@gmail.com> wrote:
> On 10/29/2019 09:15 PM, Mike M wrote:
> > Greetings all from Australia.
> > A new member here.
> >
> > I want to use ffmpeg to clean up PVR files which have frame errors.
> > The are in the format:
Hi,
I have a video which looks fine in FFplay and also in VLC, but after
uploading to Facebook the first frame is corrupted, as can be seen here:
https://www.facebook.com/12490928195/videos/2597554727004199/
I don't know if this is a problem in my file or not. The console output
is below.
hard to say but in your case it might be the resolution.
E
On Wed, 30 Oct 2019 at 08:45, arthur brogard via ffmpeg-user <
ffmpeg-user@ffmpeg.org> wrote:
> I have an old tv that plays usb sticks and we use it for that.
> But some formats pic and video it won't accept.
> Not being into it I don't
Hello!
TVs usually fall over if it’s an unsupported frame rate, looks like yours needs
it to be 25 FPS. You can can switch this with FFmpeg command:
-r 25
There’s more here:
https://trac.ffmpeg.org/wiki/ChangingFrameRate
Joanna
> On 30 Oct 2019, at 07:45, arthur brogard via ffmpeg-user
>
mp4 is just a container, we need to know what is inside this container.
What video, what audio!
Use ffprobe on those files and send us the results.
On Wed, Oct 30, 2019 at 8:45 AM arthur brogard via ffmpeg-user <
ffmpeg-user@ffmpeg.org> wrote:
> I have an old tv that plays usb sticks and we use
I have an old tv that plays usb sticks and we use it for that.
But some formats pic and video it won't accept.
Not being into it I don't really understand why or what.
This time I have a bunch of microbe animations and it plays some and some it
says 'unsupported format'.
I note the details of two
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