I'm trying to convert a large (40mb) mov file to mp4 using ffmpeg and php.
But it gives me a 504 time-out error on server. Can i fix this without changing set_time_limit ?
Here is my php code.
shell_exec($this->getFFmpegPath() . ' -i ' . $path . ' -vcodec libx264 -pix_fmt yuv420p -profile:v baseline -preset slower -crf 18 -vf "scale=trunc(in_w/2)*2:trunc(in_h/2)*2" ' . $convertedPath . '.mp4');
So, any ideas on how to convert this without a timeout ? Any help will be much appreciated.
You might want to run the converting in the background. I found this question that addresses that, but please do some more investigate on that subject. You can then allow the user to refresh to see whether the process is finished.
It might give a better user experience as well (better then looking at a page loading for a long time. There are many places in the connection that may decide to consider it a timeout: php engine, webserver, proxy, browser, depending on the infra.
Also you should be REALLY careful with shell_exec. The chances of somebody on the web misusing it to do whatever they want with your machine are quite high. Maybe not in the way you are using it today (depending on where $path and $convertedPath come from), but maybe in a future update of this code where you allow the user to specify the resulting filename for example.
Related
When I try to upload videos captured from my iPhone in my app, the server performs a conversion from .mov to .mp4 so that it can be played in other platforms. However the problem is that when I shoot the video (in portrait orientation) and it is converted (using ffmpeg) and then played back from the server, it appears to be rotated. Any idea?
FFMPEG changed the default behavior to auto rotate video sources with rotation metadata in 2015. This was released as v2.7.
If your ffmpeg version is v2.7 or newer, but your rotation metadata isn't respected, the problem is likely that you are using custom rotation based on metadata. This will cause the same logic to be applied twice, changing or cancelling out the rotation.
In addition to removing your custom rotation (recommended), there's an option to turn off auto rotation with -noautorotate.
ffmpeg -noautorotate -i input.mp4...
This will also work in some older releases.
For sake of completeness, the reason this is happening is that iPhones only actually capture video in one fixed orientation. The measured orientation is then recorded in Apple-specific metadata.
The effect is that Quicktime Player reads the metadata and rotates the video to the correct orientation during playback, but other software (e.g., VLC) does not and shows it as oriented in the actual codec data.
This is why rotate=90 (or vflip, or transpose, or etc.) will work for some people, but not others. Depending on how the camera is held during recording, the rotation necessary could be 90, 180, or even 270 degrees. Without reading the metadata, you're just guessing at how much rotation is necessary and the change that fixes one video will fail for another.
What you can also do is remove the QuickTime specific metadata when rotate the .mov.
This will make sure that the video is rotated the same way in VLC and QuickTime
ffmpeg -i in.mov -vf "transpose=1" -metadata:s:v:0 rotate=0 out.mov
Here's the documentation on the -metadata option (from http://ffmpeg.org/ffmpeg.html):
-metadata[:metadata_specifier] key=value (output,per-metadata)
Set a metadata key/value pair.
An optional metadata_specifier may be given to set metadata on streams or chapters. See -map_metadata documentation for details.
This option overrides metadata set with -map_metadata. It is also possible to delete metadata by using an empty value.
For example, for setting the title in the output file:
ffmpeg -i in.avi -metadata title="my title" out.flv
To set the language of the first audio stream:
ffmpeg -i INPUT -metadata:s:a:1 language=eng OUTPUT
Depending on which version of ffmpeg you have and how it's compiled, one of the following should work...
ffmpeg -vf "transpose=1" -i input.mov output.mp4
...or...
ffmpeg -vfilters "rotate=90" -i input.mov output.mp4
Use the vflip filter
ffmpeg -i input.mov -vf "vflip" output.mp4
Rotate did not work for me and transpose=1 was rotating 90 degrees
So - I too ran into this issue, and here my $0.02 on it:
1.) some videos DO have Orientation/Rotation metadata, some don't:
MTS (sony AVHCD) or the AVIs I have - DO NOT have an orientation tag.
MOVs and MP4s (ipad/iphone or samsung galaxy note2) DO HAVE it.
you can check the setting via 'exiftool -Rotation file'.
My videos often have 90 or 180 as the rotation.
2.) ffmpeg - regardless of the man-page with the metadata-tag, just doesn't EVER seem to set it in the output file. - the rotation-tag is ALWAYS '0'.
it correctly reports it in the output - but it's never set right to be reported by exiftool. - But hey - at least it's there and always 0.
3.) rotation angles:
if you want rotate +/- 90: transpose=1 for clockwise 90, 2 ccw
now if you need 180 degree - just add this filter TWICE.
remember - it's a filter-chain you specify. :-) - see further down.
4.) rotate then scale:
this is tricky - because you quickly get into MP4 output format violations.
Let's say you have a 1920x1080 MOV.
rotate by 90 gives 1080x1920
then we rescale to -1:720 -> 1080*(720/1920) = 405 horiz
And 405 horizontal is NOT divisable by 2 - ERROR. fix this manually.
FIXING THIS automatically - requires a bit of shell-script work.
5.) scale then rotate:
you could do it this way - but then you end up with 720x1280. yuck.
But the filter-example here would be:
"-vf yadif=1,scale=-1:720,transpose=1"
It's just not what I want - but could work quite OK.
Putting it all together: - NOTE - 'intentionally WRONG Rotation-tag', just to demonstrate - it won't show up AT ALL in the output !
This will take the input - and rotate it by 180 degree, THEN RESCALE IT - resetting the rotation-tag. - typically iphone/ipad2 can create 180deg rotated material.
you just can leave '-metadata Rotation=x' out the line...
/usr/bin/ffmpeg -i input-movie.mov -timestamp 2012-06-23 08:58:10 -map_metadata 0:0 -metadata Rotation=270 -sws_flags lanczos -vcodec libx264 -x264opts me=umh -b 2600k -vf yadif=1,transpose=1,transpose=1,scale=1280:720 -f mp4 -y output-movie.MP4
I have multiple devices - like a settop box, ipad2, note2, and I convert ALL my input-material (regardless whether it's mp4,mov,MTS,AVI) to 720p mp4, and till now ALL the resulting videos play correct (orientation,sound) on every dev.
Hope it helps.
For including into web pages my portrait-format videos from iPhone, I just discovered the following recipe for getting .mp4 files in portrait display.
Step 1: In QuickTime Player, Export your file to 480p (I assume that 720p or 1080p would work as well). You get a .mov file again.
Step 2: Take the new file in QT Player, and export to “iPad, iPhone…”. You get a .m4v file.
Step 3: I’m using Miro Video Converter, but probably any readily-available converter at all will work, to get your .mp4 file.
Works like a (long-winded) charm.
I've filmed the video with Ipad3 and it was oriented upside down, which I suppose is the common situation of all Apple devices at some versions. Besides of it, the 3-minutes long MOV file (1920x1090) took about 500 Mb in size, which made it not available to share easily. I had to convert it to MP4, and analyzing all threads I've found on stackoverflow, here's the final code string for ffmpeg I've used (ffmpeg ver. 2.8.4):
ffmpeg -i IN.MOV -s 960x540 -metadata:s:v rotate="0" -acodec libmp3lame OUT.mp4
I suppose you may just leave '-metadata:s:v rotate="0"' if you don't need the resize and audio codec change. Note that if you resize the video, width and height should fully divide to 4.
Although the topic is old.
Hope this will help some one:
Get ffmpeg latest version : https://www.ffmpeg.org/download.html
The command that worked for me (to flip 180 degrees):
ffmpeg -noautorotate -i input.mp4 -filter:v "rotate=PI" output.mp4
When the degrees are determined by -filter:v "PI/180*degrees"
for example
-filter:v "45*PI/180" for 45 degrees
A nice explanation is here
https://superuser.com/questions/578321/how-to-rotate-a-video-180-with-ffmpeg
Or... to simply change the tag in an existing file:
Read the current rotation
exiftool -Rotation <file>
then, for example:
exiftool -Rotation=180 <file>
to set it to 180
So, i have kind of accepted this task on work but im really not sure if its possible.
We are going to build a website where users can upload videos from their computers and mobile phone browsers. The video files can be a large range of aspect ratios, width, height, codex and file formats.
I will have access to ffmpeg from php exec command on a web server.
Is it possible to use this to convert the user files to one file format that works on computers, android and iphone.
The requirements is that we can set a max width, to witch the video will be scaled, dynamically to match height.
Does anyone know is this can be done, and be done in a reasonable amount of time. Will do project on 2 days. And if so some pointers in the right direction would be nice.
Had the same problem but solved by using HandBrake the open source video transcoder
https://handbrake.fr/
If your target can only be one file format, then I would choose mp4 baseline. (However some browsers won't play it, which is why the html tag offers multiple source flags, which usually include webm and ogg video...)
Using ffprobe -show_streams $uploadedFile you can get the dimensions (and aspect ratio) of the file. Using math you can get the new dimensions based on your needs.
$newDim=$new_width.":".$new_height;
$output = shell_exec("/usr/bin/ffmpeg -i $uploadedFile -f mp4 \
-c:a libfdk_aac -b:a 128k -c:v libx264 -vprofile baseline \
-movflags faststart -vf scale=$newDim $output");```
Here is the breakdown:
f mp4 > format mp4
c:a libfdk_aac > audio codec
c:v libx264 > video codec
vprofile baseline > minimal codec usage for mobile
movflags faststart > put the moov atom at the beginning of file
$output > should have '.mp4' as a file ending
Of course the devil is in the details (and the number of processing cores you can throw at an online converter), but this will get you up and running at least.
Edit: Actually answered the question. :)
By the way, ffmpeg does offer the vf flag: -vf scale=320,-1, but sometimes it gives you a dimension not divisible by 2 which throws an error in x264 encoding. Its better to do the math yourself.
I have thousands of html pages which are handled as php.
inside each page, is a line:
<? file_get_contents("http://www.something.com/get_html.php?id=something"); ?>
for some reason, suddenly this line has been slowing down the server. When the page loads, it waits around 15 seconds at this line before proceeding.
The answer here works, namely,
$context = stream_context_create(array('http' => array('header'=>'Connection: close\r\n')));
file_get_contents("http://www.something.com/somepage.html",false,$context);
which "tells the remote web server to close the connection when the download is complete".
However, this would require rewriting all the thousands of files. Is there a way to do the same thing from the get_html.php script?
this would be alot easier than rewriting all the pages. I tried sending
header("Connection: close"); in that script but no cigar.
To summarize, I am looking for the answer here but adapted to remote server side solution
You could easily do a find/replace in files in a certain directory with most editors. However, I would suggest you started caching results instead of poking your own or foreign servers subsequently for each request.
Is the remote server outside of your local network? If not you could query the database or something else directly over your scripts without a http call. Else you could cache your search results in Memcache or files for a couple of time. It depends on the size and varity of your data how much memory is required for caching.
This are only two examples how to get faster response times. There are many approaches to do this.
you may try the following:
http://www.php.net/manual/en/function.override-function.php
don't know if you can change your server configuration
Here are a couple of things for you to try. Try using cURL to make the request and see if it is still hanging up. Also, try fetching a different page on your site to see if it is also slow. These tests will help determine if it's that particular page or the connection that's hanging up. If another page is slow also, then modifying the 'get_html.php' page probably won't be much help.
To elaborate on Elias' answer, if the connection can easily be fixed by doing a find replace, you can use something like this from the command line in *nix:
perl -pi -w -e 's/search/replace/g;' *.php
-e means execute the following line of code.
-i means edit in-place
-w write warnings
-p loop
You'd have to test this out on a few files before doing all of them, but more specifically, you can use this to very quickly do a find/replace for all of your files:
perl -pi -w -e 's/(file_get_contents\("http:\/\/www.something.com\/somepage.html",false,\$context\)\;)/\$context = stream_context_create(array("http" => array("header" => "Connection: close\\r\\n")));\n$1/g;' *.php
I'm trying to save an image from a video frame and save it as a jpeg.
This function works for smaller video files, but if the video is over 10 minutes it won't save the jpeg image. An error comes up as before trans.
public function VideoToJpeg($localVideoPath, $localOutImgPath)
{
$Name = dirname(__FILE__) . "/ffmpeg";
$Str = "$Name -i \"$localVideoPath\" -an -ss 00:00:03 -an -r 1 -vframes 1 -y \"$localOutImgPath\"";
exec($Str);
}
Here is the error I got from ffmpeg
[NULL # 0370e760] Unable to find a suitable output format for 'path'
: Invalid argument
It is not clear from your question but I think $localOutImgPath and $localVideoPath parameter are passing some wrong values as error said it clearly:
[NULL # 0370e760] Unable to find a suitable output format for 'path'
kindly check it.
See FFmpeg: The ultimate Video and Audio Manipulation Tool and
FFmpeg and x264 Encoding Guide for more examples.
Not sure if this will help at all, but I have had success using the following PHP package (though I have never suffered from the issues you mention):
http://ffmpeg-php.sourceforge.net/
Another alternative might be to change the php memory allocation setting:
http://drupal.org/node/207036
You are probably not using Drupal but most of the suggestions on that page are relevant and deal with PHP itself (rather than Drupal).
I have a php shell script that downloads a large file, it would be a bit of a luxury to be able to see the progress of the download in shell while it's happening, anyone have any idea how this can be achieved (or at least point me in the right direction!)
Thanks!
You could try to poll the filesize of the downloaded file as it's downloading, and compare it with the filesize of the file you requested.
This seemed to work (unexpectedly!)
echo "wget '$feedURL'\n";
$execute = "wget -O ".$filePath." '$feedURL'\n";
$systemOutput = shell_exec($execute);
$systemOutput = str_replace( "\n", "\n\t", $systemOutput);
echo "\t$systemOutput\n";
Read the header of the file to get the size of the file (if that information is available). Then keep track of how much you have downloaded and that will give you your percentage.
How you might do that depends on what libraries/functions you are using.