I tried getting a simple audio file using this chunk of code off the terminal:
youtube-dl -f bestaudio https://youtu.be/gTEHbBBl_dY
it's the simplest yt-dl formula ever and here's what I got.
[youtube] gTEHbBBl_dY: Downloading webpage
ERROR: gTEHbBBl_dY: YouTube said: Unable to extract video data
so yea...I saw a lot of answers on stack itself but none of them worked for me.
pls help, I'm not a pro yet with homebrew tools.
Extract audio instead of -f to format it to bestaudio
youtube-dl -x
Related
I just installed Sympol in my Ubuntu. Sympol is an open source software in the mathematics. My problem is that when I run sympol on some input data, I don't know where the output is printed. here in page 6 of this pdf (http://www.math.uni-rostock.de/~rehn/software/sympol-manual-0.1.pdf), it says the output is in .ine or .ext format but I don't know where is these output files!!!!!! please help me if you understand how it works. and it is the website of sympol for installation. http://www.math.uni-rostock.de/~rehn/software/sympol.html
I should add that when it says: Segmentation fault
Ubuntu: Assuming your app is actually running properly and you have root permissions, open another terminal, install and run fatrace, and watch for file output. When running, fatrace prints all files touched in real-time, so you should be able to see your output file's location if it's getting output.
Reading the docs again and again is almost always the correct answer, but if in this case the documentation is that bad, then watching for the file getting written is another good way to figure it out.
Windows: Sysinternals procmon (you can get it from Microsoft) can achieve the same result.
So below is my command that I am running. It should be converting it to mp3 but it still exports as a video in flv. What am I doing wrong?
$cmd = '/usr/local/bin/youtube-dl -o "%(title)s.%(ext)s" -x --audio-format mp3 -- '.escapeshellarg($url).'';
youtube-dl will download the video before converting it. Most likely, you don't have ffprobe or ffmpeg installed. Make sure both programs are available (i.e. you get a sensible output for ffprobe --help and ffmpeg --help).
You can directly download the .mp3 file from the youtube site.
For e.g in ubuntu terminal youtube-dl youtube.com/watch?v=qn6CMz18lkQ -f 141 .Most probably 141 is the .mp3 file format code for better quality.
I am working on ubuntu. I have a file.h263 and I don't know how to play it. I've tried ffmpeg -f msg0001.h263 -i file.avi but it didn;t work. Need some help please. I want to convert file.h263 in .avi or mp2 in order to play the file in an android phone. Got any advices? It would be best to have a c++ code. but i didn't find any example, nothing at all.
Please help. If you have a piece of code that does this I would appreciate.
Thx
You should be able to play H263 file and convert it to AVI as the following:
ffplay -i file.h263
ffmpeg -i file.h263 file.avi
For android playback you can keep video stream in H.263 and convert the file to 3GPP (.3gp) or MPEG-4 file format or change file format and codec to MPEG-4 and H.264. For example:
ffmpeg -i file.h263 -vcodec copy -f 3gp file-h263.3gp
ffmpeg -i file.h263 -vcodec h264 -f mp4 file-h264.mp4
See Android supported media formats for more information.
.h263 is old yet great format, and if your software player uses HW accelration to play video that majority of old videocards (including Nvidia, ATI) will provide you HW accelration for video playback for .h263 format files... now various use .h264 format... thus try to convert videos to .h264 format instead of avi...
i think what you are facing is a extension delima .... try renaming it to MP4, then various player will play it without problems..
you can also use vlc.. one of the best video players ever...
Beside GStreamer can play H263 files , and with gstreamer pipelines you can convert various format on flies...
though i usually use Handbreak to convert video files /DVD's, and it is available on windows, Mac as well as on linux ....
P.S. in Gstreamer, you might need to install plugins, install all 2... good, bad and ugly plugin. i am not sure in which .h263 comes in, but must be in one of these three......
I'm using ColdFusion and need to generate a thumbnail from a flash movie stored on the server. I have heard of ffMpeg but have no idea how to use it. (Once you put it on your server what's the next step?)
You can use cfexecute to run a command line on the CF server.
Karthik linked a blog post that suggests the following syntax for ffmpeg:
ffmpeg -itsoffset -4 -i test.avi
-vcodec mjpeg -vframes 1 -an -f rawvideo -s 320x240 test.jpg
So you could do something like this:
<cfexecute
name="c:\pathto\ffmpeg\ffmpeg.exe"
arguments="-itsoffset -4 -i #sourcevideo# -vcodec mjpeg -vframes 1 -an -f rawvideo -s 320x240 #thumbnaildestination" />
I haven't run ffmpeg like this and you'll likely need to experiment with the syntax to get a result you like, but once you do your workflow is pretty straightforward.
You may also run into issues executing fmpeg.exe depending on the user account your ColdFusion server instance is running as.
Documentation of FFMpeg: http://www.ffmpeg.org/documentation.html
You might want to check: http://blog.prashanthellina.com/2008/03/29/creating-video-thumbnails-using-ffmpeg/
http://www.flashcomguru.com/index.cfm/2006/4/25/ffmpegthumbs
with ColdFusion its not possible but check this: http://old.nabble.com/Create-a-thumbnail-image-from-.flv-video-file-once-uploaded-td22683497.html
I'm using an application called ClipShare to post videos. However, encoding seems to fail. Here's what I get from the logs:
/usr/local/bin/mencoder /clipshare/video/39.wmv -o /clipshare/flvideo/39x.flv -of lavf -oac mp3lame -lameopts abr:br=56 -ovc lavc -lavcopts vcodec=flv:vbitrate=800:mbd=2:mv0:trell:v4mv:keyint=10:cbp:last_pred=3 -srate 22050 -ofps 25000/1001
MEncoder SVN-r32642-snapshot-4.1.2 (C) 2000-2010 MPlayer Team
get_path("config") problem
MPlayer was compiled without libmp3lame support.
-lameopts is not an MEncoder option
Exiting... (error parsing command line)
I do have LAME installed. If I run the command on the first line with the -nosound option it works, but with a lot of "skipping frame!"
Any ideas? I appreciate any help. Thanks!
-AC
The problem was that mplayer was installed in usr/local/bin instead of usr/bin. Problem solved!