It looks like the options have changed slightly in recent versions. To use the filter input sources, you have to: Set the input format to the libavfilter virtual device using: -f lavfi Set the filter input source using the -i flag (not -vf) Provide arguments as complete key-value pairs, like: color=color=red This works for ffplay, … Read more
I would recommend that you look again at gst-python! It is not coupled with pyGTK. You can use it completely separately, with no dependencies on either the Python bindings or the C libraries of GTK. I’ve written several command-line utilities that use gst-python and not GTK. It’s true that the gst-python docs are not so … Read more
The reason why event bubbling exists is solve the ambiguous question of which element is the intended target of the event. So, if you click on a div, did you mean to click the div, or its parent? If the child doesn’t have a click handler attached, then it checks the parent, and so on. … Read more
Yes you can, you just have to specific the pixel format. To get the whole list of the format: ffmpeg -pix_fmts | grep -i pixel_format_name For example if you want to save the 1st video track of an mp4 file as a yuv420p (p means planar) file: ffmpeg -i video.mp4 -c:v rawvideo -pix_fmt yuv420p out.yuv
I would use FFprobe (it comes along with FFMPEG): ffprobe -i INPUT -show_streams -select_streams a -loglevel error In case there’s no audio it ouputs nothing. If there is an audio stream then you get something like: [STREAM] index=0 codec_name=mp3 codec_long_name=MP3 (MPEG audio layer 3) profile=unknown codec_type=audio codec_time_base=1/44100 etc etc… [/STREAM] That should be easy enough … Read more
gource -1024×768 –stop-position 1.0 –highlight-all-users –hide-filenames –seconds-per-day 5 –output-framerate 60 –output-ppm-stream output.ppm ffmpeg -y -r 60 -f image2pipe -vcodec ppm -i output.ppm -vcodec wmv1 -r 60 -qscale 0 out.wmv The key was the image2pipe format which seems to extract all the frames from the ppm rather than treating it as an individual image.
If you are using HTML5, using the Video tag is suitable for this purpose. You can use the Video Tag this way for no autoplay: <video width=”320″ height=”240″ controls> <source src=”https://stackoverflow.com/questions/31956221/videos/example.mp4″ type=”video/mp4″> </video> To enable auto-play, <video width=”320″ height=”240″ controls autoplay> <source src=”https://stackoverflow.com/questions/31956221/videos/example.mp4″ type=”video/mp4″> </video>
This is what I’ve ended up using… find *.mp4 | sed ‘s:\ :\\\ :g’| sed ‘s/^/file /’ > fl.txt; ffmpeg -f concat -i fl.txt -c copy output.mp4; rm fl.txt It’s ugliness pains me but it seems to work ok and it handles spaces in the file names. Also, not sure why OP was asking about … Read more