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Sur d’autres sites (4642)
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iOS video streaming to server using websockets
6 septembre 2013, par user1516711Is it any way possible to stream video frames live from iOS SDK using AVCaptureSession to a remote server using WebSocket like SocketRocket ? What are pros and cons if it is possible ?
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Cannot convert file to .mp4 using phpvideotoolkit
7 décembre 2015, par user3653474I am using the phpvideotoolkit http://www.phpclasses.org/package/3747-PHP-Manipulate-and-convert-videos-with-ffmpeg-program.html to convert video to .mp4 formats. As I run this file as an example
http://localhost/phpvideotoolkit-v2-master/examples/convert-to-flv.php
I got the following errors, please help explain how I could use phpvideotoolkit to convert any video to .mp4. Although the following file is present in C :\wamp\www\phpvideotoolkit-v2-master\examples/media/BigBuckBunny_320x180.mp4 but the error message is still shown.
Array
(
[0] => ERROR---------
[1] => exception
[2] => Array
(
[0] => InvalidArgumentException Object
(
[message:protected] => The file "C:\wamp\www\phpvideotoolkit-v2-master\examples/media/BigBuckBunny_320x180.mp4" cannot be found in \PHPVideoToolkit\Media::__construct.
[string:Exception:private] =>
[code:protected] => 0
[file:protected] => C:\wamp\www\phpvideotoolkit-v2-master\src\PHPVideoToolkit\Media.php
[line:protected] => 254
[trace:Exception:private] => Array
(
[0] => Array
(
[file] => C:\wamp\www\phpvideotoolkit-v2-master\src\PHPVideoToolkit\Media.php
[line] => 75
[function] => setMediaPath
[class] => PHPVideoToolkit\Media
[type] => ->
[args] => Array
(
[0] => C:\wamp\www\phpvideotoolkit-v2-master\examples/media/BigBuckBunny_320x180.mp4
)
)
[1] => Array
(
[file] => C:\wamp\www\phpvideotoolkit-v2-master\src\PHPVideoToolkit\Video.php
[line] => 35
[function] => __construct
[class] => PHPVideoToolkit\Media
[type] => ->
[args] => Array
(
[0] => C:\wamp\www\phpvideotoolkit-v2-master\examples/media/BigBuckBunny_320x180.mp4
[1] =>
[2] =>
)
)
[2] => Array
(
[file] => C:\wamp\www\phpvideotoolkit-v2-master\examples\convert-to-flv.php
[line] => 9
[function] => __construct
[class] => PHPVideoToolkit\Video
[type] => ->
[args] => Array
(
[0] => C:\wamp\www\phpvideotoolkit-v2-master\examples/media/BigBuckBunny_320x180.mp4
)
)
)
[previous:Exception:private] =>
[xdebug_message] => <tr><th align="left" bgcolor="#f57900" colspan="5"><span style="background-color: #cc0000; color: #fce94f; font-size: x-large;">( ! )</span> InvalidArgumentException: The file "C:\wamp\www\phpvideotoolkit-v2-master\examples/media/BigBuckBunny_320x180.mp4" cannot be found in \PHPVideoToolkit\Media::__construct. in C:\wamp\www\phpvideotoolkit-v2-master\src\PHPVideoToolkit\Media.php on line <i>254</i></th></tr>
<tr><th align="left" bgcolor="#e9b96e" colspan="5">Call Stack</th></tr>
<tr><th align="center" bgcolor="#eeeeec">#</th><th align="left" bgcolor="#eeeeec">Time</th><th align="left" bgcolor="#eeeeec">Memory</th><th align="left" bgcolor="#eeeeec">Function</th><th align="left" bgcolor="#eeeeec">Location</th></tr>
<tr><td bgcolor="#eeeeec" align="center">1</td><td bgcolor="#eeeeec" align="center">0.0290</td><td bgcolor="#eeeeec" align="right">260072</td><td bgcolor="#eeeeec">{main}( )</td><td title="C:\wamp\www\phpvideotoolkit-v2-master\examples\convert-to-flv.php" bgcolor="#eeeeec">..\convert-to-flv.php<b>:</b>0</td></tr>
<tr><td bgcolor="#eeeeec" align="center">2</td><td bgcolor="#eeeeec" align="center">0.3640</td><td bgcolor="#eeeeec" align="right">1089856</td><td bgcolor="#eeeeec">PHPVideoToolkit\Video->__construct( )</td><td title="C:\wamp\www\phpvideotoolkit-v2-master\examples\convert-to-flv.php" bgcolor="#eeeeec">..\convert-to-flv.php<b>:</b>9</td></tr>
<tr><td bgcolor="#eeeeec" align="center">3</td><td bgcolor="#eeeeec" align="center">0.3640</td><td bgcolor="#eeeeec" align="right">1090336</td><td bgcolor="#eeeeec">PHPVideoToolkit\Media->__construct( )</td><td title="C:\wamp\www\phpvideotoolkit-v2-master\src\PHPVideoToolkit\Video.php" bgcolor="#eeeeec">..\Video.php<b>:</b>35</td></tr>
<tr><td bgcolor="#eeeeec" align="center">4</td><td bgcolor="#eeeeec" align="center">0.4220</td><td bgcolor="#eeeeec" align="right">1100088</td><td bgcolor="#eeeeec">PHPVideoToolkit\Media->setMediaPath( )</td><td title="C:\wamp\www\phpvideotoolkit-v2-master\src\PHPVideoToolkit\Media.php" bgcolor="#eeeeec">..\Media.php<b>:</b>75</td></tr>
)
)
[3] => Array
(
[0] => Array
(
[function] => __errorHandler
[args] => Array
(
[0] => InvalidArgumentException Object
(
[message:protected] => The file "C:\wamp\www\phpvideotoolkit-v2-master\examples/media/BigBuckBunny_320x180.mp4" cannot be found in \PHPVideoToolkit\Media::__construct.
[string:Exception:private] =>
[code:protected] => 0
[file:protected] => C:\wamp\www\phpvideotoolkit-v2-master\src\PHPVideoToolkit\Media.php
[line:protected] => 254
[trace:Exception:private] => Array
(
[0] => Array
(
[file] => C:\wamp\www\phpvideotoolkit-v2-master\src\PHPVideoToolkit\Media.php
[line] => 75
[function] => setMediaPath
[class] => PHPVideoToolkit\Media
[type] => ->
[args] => Array
(
[0] => C:\wamp\www\phpvideotoolkit-v2-master\examples/media/BigBuckBunny_320x180.mp4
)
)
[1] => Array
(
[file] => C:\wamp\www\phpvideotoolkit-v2-master\src\PHPVideoToolkit\Video.php
[line] => 35
[function] => __construct
[class] => PHPVideoToolkit\Media
[type] => ->
[args] => Array
(
[0] => C:\wamp\www\phpvideotoolkit-v2-master\examples/media/BigBuckBunny_320x180.mp4
[1] =>
[2] =>
)
)
[2] => Array
(
[file] => C:\wamp\www\phpvideotoolkit-v2-master\examples\convert-to-flv.php
[line] => 9
[function] => __construct
[class] => PHPVideoToolkit\Video
[type] => ->
[args] => Array
(
[0] => C:\wamp\www\phpvideotoolkit-v2-master\examples/media/BigBuckBunny_320x180.mp4
)
)
)
[previous:Exception:private] =>
[xdebug_message] => <tr><th align="left" bgcolor="#f57900" colspan="5"><span style="background-color: #cc0000; color: #fce94f; font-size: x-large;">( ! )</span> InvalidArgumentException: The file "C:\wamp\www\phpvideotoolkit-v2-master\examples/media/BigBuckBunny_320x180.mp4" cannot be found in \PHPVideoToolkit\Media::__construct. in C:\wamp\www\phpvideotoolkit-v2-master\src\PHPVideoToolkit\Media.php on line <i>254</i></th></tr>
<tr><th align="left" bgcolor="#e9b96e" colspan="5">Call Stack</th></tr>
<tr><th align="center" bgcolor="#eeeeec">#</th><th align="left" bgcolor="#eeeeec">Time</th><th align="left" bgcolor="#eeeeec">Memory</th><th align="left" bgcolor="#eeeeec">Function</th><th align="left" bgcolor="#eeeeec">Location</th></tr>
<tr><td bgcolor="#eeeeec" align="center">1</td><td bgcolor="#eeeeec" align="center">0.0290</td><td bgcolor="#eeeeec" align="right">260072</td><td bgcolor="#eeeeec">{main}( )</td><td title="C:\wamp\www\phpvideotoolkit-v2-master\examples\convert-to-flv.php" bgcolor="#eeeeec">..\convert-to-flv.php<b>:</b>0</td></tr>
<tr><td bgcolor="#eeeeec" align="center">2</td><td bgcolor="#eeeeec" align="center">0.3640</td><td bgcolor="#eeeeec" align="right">1089856</td><td bgcolor="#eeeeec">PHPVideoToolkit\Video->__construct( )</td><td title="C:\wamp\www\phpvideotoolkit-v2-master\examples\convert-to-flv.php" bgcolor="#eeeeec">..\convert-to-flv.php<b>:</b>9</td></tr>
<tr><td bgcolor="#eeeeec" align="center">3</td><td bgcolor="#eeeeec" align="center">0.3640</td><td bgcolor="#eeeeec" align="right">1090336</td><td bgcolor="#eeeeec">PHPVideoToolkit\Media->__construct( )</td><td title="C:\wamp\www\phpvideotoolkit-v2-master\src\PHPVideoToolkit\Video.php" bgcolor="#eeeeec">..\Video.php<b>:</b>35</td></tr>
<tr><td bgcolor="#eeeeec" align="center">4</td><td bgcolor="#eeeeec" align="center">0.4220</td><td bgcolor="#eeeeec" align="right">1100088</td><td bgcolor="#eeeeec">PHPVideoToolkit\Media->setMediaPath( )</td><td title="C:\wamp\www\phpvideotoolkit-v2-master\src\PHPVideoToolkit\Media.php" bgcolor="#eeeeec">..\Media.php<b>:</b>75</td></tr>
)
)
)
)
) -
ffmpeg scaling and padding error
30 novembre 2016, par jsurfI am trying to scale a video of any dimension to be 720x720, and then centered on a padded background of 1280x720.
ffmpeg -y -i test.mp4 -vf "scale=-1:720,pad=width=1280:height=720:x=280" -c:a copy processed/test.mp4This command gives the error : "Warning : data is not aligned ! This can lead to a speedloss", although the video does scale and center properly.
The same command without the x coordinate of 280px gets rid of the error, but then the video is not centered properly :
ffmpeg -y -i test.mp4 -vf "scale=-1:720,pad=width=1280:height=720" -c:a copy processed/test.mp4Is there another way I can center the video and get rid of the error ?
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