I use this code to create an mkv file with a webm video:
Code
The video that is generated can be opened in vlc and mplayer, however, firefox sais: video can't be played because the file is corrupt
How do I have to change the header so I can open it in firefox, too?
Found the solution... this code actually outputs a so called ivf format, while the real mkv output code can be found here:
(Much more complicated, though)
Related
I downloaded the files from the timit speech corpus found here: https://github.com/philipperemy/timit
When I try playing the .WAV files with groove music or windows media player I get an error saying the file cannot be played.
However after converting the file to mp3 using an online converter, the file suddenly works.
The .WAV files are only around 100-200KB in size.
Does anyone know what the reason for this problem might be?
Found the answer here: reading a WAV file from TIMIT database in python
Apparently it is not actually a .WAV file but a NIST file.
When I used python audio segment to open a .wav file and divide it into many .wav files i am getting this error
"C:\Python27\lib\site-packages\pydub\utils.py:165: RuntimeWarning: Couldn't find
ffmpeg or avconv - defaulting to ffmpeg, but may not work
warn("Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work"
, RuntimeWarning)"
It seems like you don't have ffmpeg, which is listed in the dependencies section of the Pydub GitHub. However, it is only required if you wish to load or save non-WAV files.
This message is just a warning, if you're using Pydub solely for WAV files, it is safe to simply ignore it.
I'm building an application in C++ that should use FFmpeg to send a live stream to Flash Media Server. For starters I would like to be able to send a .mp4 file. Using the FFmpeg .exe I can do it like this:
ffmpeg -re -i TEST.mp4 -vcodec libx264 -f flv rtmp://[host]/[application]/[stream]
How would you go about implementing something like that in code? I can only figure out how to read data, not write it. I have found functions to open input but nothing about how to connect to FMS. All write functions I can find seems to be how to write to file. Please advice.
can anybody tell me example of c code for openmax, to play an video file located in local drive.
you can find header files at the link given below-
http://www.khronos.org/registry/omxal/
Thanks.
use the audio.s() method, then reverse the autpout to video linking
how to convert WAV format to FLAC using libFLAC++
(encode.h and decode.h)
There's a nice C++ example in the libflac source tarball.
It's also possible to browse it online (single cpp file).
Decode
Encode