Recherche avancée

Sur d’autres sites (5632)

• Youtube encoder live streaming by using OpenCV and ffmpeg [closed]

  17 mai 2022, par David Logers

  Does anyone know the best way to do YouTube livestream using ffmpeg and python's opencv ?
I would be very grateful if you could let me know.
Thank you.

  


• Extract thumbnail from video in amazon s3 and store it in amazon s3 [closed]

  24 juin 2021, par Kanav Raina

  I want to extract thumbnail from video and store it on s3.

  


  import ffmpeg

url="https://link_to_s3_video.mp4"

(
    ffmpeg
    .input(url, ss='00:00:03')  
    .output("frame.png", pix_fmt='rgb24', frames='1')  
    .overwrite_output()
    .run()
)


  


  I am able to extract image but now how should I pass this image to file_upload function and store it on s3

  


  def file_upload(file, filename):
    link = f"https://{PUBLIC_BUCKET_NAME}.s3.us-east-2.amazonaws.com/images/{filename}"
    try:
        s3.Object(PUBLIC_BUCKET_NAME, f"images/{filename}").load()
    except ClientError as e:
        if e.response['Error']['Code'] == "404":
            try:
                s3_client.upload_fileobj(
                    file,
                    PUBLIC_BUCKET_NAME,
                    f"images/{filename}",
                    ExtraArgs={'ACL': 'public-read'}
                )

                return 200, link
            except ClientError as e:
                logging.error(e)
                return 500, ""
        else:
            return 500, ""
    else:
        return 409, link


  


  Thanks

  


• Saving video to SD card while live streaming to YouTube using FFmpeg

  15 mai 2020, par Zohair Ul Hasan

  I'm trying to set up a Raspberry Pi so that it live streams video to YouTube using the Raspberry Pi camera and also saves the video to the SD Card for backup, in case the internet gets disconnected. I used Alex Ellis's guide to set it up, which is basically a docker image that anyone can download and set it up. He sets up the live stream to YouTube but doesn't save the video offline.

  



  So, I tinkered with his code and found that he used FFmpeg to stream to YouTube. The following line is basically the heart of his method to stream :

  



  raspivid -o - -t 0 -w 1920 -h 1080 -fps 40 -b 8000000 -g 40 | ffmpeg -re -ar 44100 -ac 2 -acodec pcm_s16le -f s16le -ac 2 -i /dev/zero -f h264 -i pipe:0 -c:v copy -c:a aac -ab 128k -g 40 -strict experimental -f flv -r 30 rtmp://a.rtmp.youtube.com/live2/$1


  



  I read up about FFmpeg and apparently, to save this stream to my SD card all I need to do is add the directory where I want to save my video to the end of this code. I modified it like so at the end of the line :

  



  raspivid -o - -t 0 -w 1920 -h 1080 -fps 40 -b 8000000 -g 40 | ffmpeg -re -ar 44100 -ac 2 -acodec pcm_s16le -f s16le -ac 2 -i /dev/zero -f h264 -i pipe:0 -c:v copy -c:a aac -ab 128k -g 40 -strict experimental -f flv -r 30 rtmp://a.rtmp.youtube.com/live2/$1 /home/pi/Desktop/my_video.mp4


  



  However, when I ran this, the terminal threw this error :

  



  /home/pi/Desktop/my_video.mp4: No such file or directory


  



  This path, however, definitely exists by default in all Raspberry Pi's. I'm not sure what's wrong here, can someone please help me out ?

  



  P.S : as an additional side question, I read up the documentation on FFmpeg and it specifically says not to use the -re argument when using a live input source, but Alex uses it anyways. Should I substitute it with something different ? It works fine right now though.