Thanks for the reply. I am using a little wifi module on my Pi Zero and
want to send the minimum amount of data so I don't experience buffering and
frame drops. So I am using 10 fps. I don't think my setup could handle
25-30 fps?
Should I be adding in a param related to keyframes, though?
It is i
Am Donnerstag, 9. Februar 2017 schrieb christina zou :
> I've made some progress thanks to advice from the IRC channel. I increased
> my pipe max buffer size as high as I could:
>
> sysctl fs.pipe-max-size=1048576
>
> I also lowered my video resolution and bitrate.
>
> Now, with the below command
I've made some progress thanks to advice from the IRC channel. I increased
my pipe max buffer size as high as I could:
sysctl fs.pipe-max-size=1048576
I also lowered my video resolution and bitrate.
Now, with the below command I've managed 3 minutes of fully synced
audio/video livestream to Yout
Carl,
I spent a lot of time trying to use ffmpeg alone (alsa/v4l2), but it
produces extreme stuttering on the audio track. Using my approach of
writing to named pipes and sending those into ffmpeg, I add a bit of
latency but ensure that there's no loss of frames. This was the approach
suggested to
2017-02-08 22:57 GMT+01:00 christina zou :
> *arecord -Dmic_sv -c2 -r48000 -fS32_LE -twav temp_audio.v & \*
Why?
(See below)
> *raspivid -fps 10 -v -b 300 -o temp_video.h264 -t 0 & \*
Is this not possible with ffmpeg alone?
> ~/special/ffmpeg/ffmpeg* \*
> *-framerate 10 \*
> *-re \
2017-02-08 17:29 GMT+01:00 Chao Zhou :
> I am cropping a video to 9 small segments with the command below:
>
> ffmpeg -i source.mp4 -filter_complex \
> "[0:v]crop=1/3*in_w:1/3*in_h:0:0[out1];[0:v]crop=1/3*in_w:1/3*in_h:1/3*in_w:0[out2];\
> [0:v]crop=1/3*in_w:1/3*in_h:2/3*in_w:0[out3];[0:v]crop=1/3
2017-02-08 21:51 GMT+01:00 Haris Zukanovic :
> Is it possible to designate a default decoder for mpeg2?
> Concretly, I would like to get ffmpeg to use mpeg2_qsv instead of mpeg2video
Either change the order of codecs in allcodecs.c or disable the internal
decoder when running configure.
Carl Eug
Hi,
I am trying to stream audio and video from my Pi to Youtube Live using
FFMPEG. My stream's audio and video are not syncing, because the audio is
perfectly realtime, but the video skips forward frequently.
Here is an example streamed video:
https://www.youtube.com/watch?v=Bz12pDbay0U
My Pi's
Hi everyone,
Is it possible to designate a default decoder for mpeg2?
Concretly, I would like to get ffmpeg to use mpeg2_qsv instead of mpeg2video
on autodetect of such codec on input.
thanx for any pointers
Haris
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Hi team,
I am cropping a video to 9 small segments with the command below:
ffmpeg -i source.mp4 -filter_complex \
"[0:v]crop=1/3*in_w:1/3*in_h:0:0[out1];[0:v]crop=1/3*in_w:1/3*in_h:1/3*in_w:0[out2];\
[0:v]crop=1/3*in_w:1/3*in_h:2/3*in_w:0[out3];[0:v]crop=1/3*in_w:1/3*in_h:0:1/3*in_h[out4];\
[0:v]
On Wed, Feb 8, 2017 at 11:28 AM, Carl Eugen Hoyos
wrote:
> Is the issue reproducible with file input?
>
No
> With video file and audio pulse input?
>
No
> (With audio file and video grab input?)
Yes
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2017-02-08 11:19 GMT+01:00 Martin Ždila :
> ffmpeg -y \
> -thread_queue_size 512 -video_size 800x600 -framerate 25 -f x11grab -i :0.0
> \
> -thread_queue_size 512 -f pulse -i default
Is the issue reproducible with file input?
With video file and audio pulse input?
(With audio file and video
On Wed, Feb 8, 2017 at 11:09 AM, Carl Eugen Hoyos
wrote:
> Remove "-r 30" and provide both command line and complete, uncut
> console output.
>
Let me please provide output of the example mentioned on StackOverflow
which has no "-r 30":
Example:
ffmpeg -y \
-thread_queue_size 512 -video_size
2017-01-17 17:15 GMT+01:00 Martin Ždila :
> I am trying to grab a screen with audio, record it to mp4 file and also
> extract 60th frame as jpeg:
>
> ffmpeg -hide_banner -y -thread_queue_size 512 -video_size 800x600
> -framerate 30 -r 30 -f x11grab -draw_mouse 0 -i :0.0 -thread_queue_size 512
> -f
2017-02-08 7:52 GMT+01:00 qw :
> I have one question about how to repeat to read the same flv file. It
> means that, when reaching the end of the flv file, ffmpeg will switch
> to the beginning of the same flv file and continue to push stream
> without shutting down rtmp session.
Command line and
2017-02-07 3:18 GMT+01:00 dj stava :
> I use the ffmepg(version: 3.2.2 static)
Please test current FFmpeg git head and provide your command
line and at least the first 100 and the last 100 lines of console
output, remove "-v error" from the command line.
Carl Eugen
_
2017-02-08 3:33 GMT+01:00 Rick Corteza :
> I want to ask about the capabilities with ffmpeg and dav files. I know
> that ffmpeg can convert the video,
> but what if the dav file has audio?
Please provide such a sample.
Carl Eugen
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2017-02-07 21:18 GMT+01:00 Uma Sagar :
> Hello!
>
> The post http://ffmpeg.org/index.html#news says ffserver program
> will be dropped from next release.
The most urgent issues have been resolved, atm ffserver will not
be dropped.
Carl Eugen
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