ffmpeg - Stream media file with alpha channel












0














What I would like to achieve is to stream a PNG image (containing alpha background) to localhost in order to use it as input to watermark the main video stream. For example I have a ffmpeg process that would stream the png:



ffmpeg -loop 1 -i image_with_alpha_backgroung.png -options options protocol://localhost:3000


Main ffmpeg process:



ffmpeg -i main_video -i protocol://localhost:3000 -filter_complex overlay -f flv rtmp://streaming_server


The main ffmpeg process would listen for that png watermark stream and would insert it only when streamed from the png ffmpeg stream process. How is it achievable? What I have tried is to stream the png with image2pipe format but it transforms the images in mjpeg and also tried to stream .webm files since the vp9 codec supports alpha but when receiving the webm stream the main process doesn't like the input format. Thank you for your attention










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    What I would like to achieve is to stream a PNG image (containing alpha background) to localhost in order to use it as input to watermark the main video stream. For example I have a ffmpeg process that would stream the png:



    ffmpeg -loop 1 -i image_with_alpha_backgroung.png -options options protocol://localhost:3000


    Main ffmpeg process:



    ffmpeg -i main_video -i protocol://localhost:3000 -filter_complex overlay -f flv rtmp://streaming_server


    The main ffmpeg process would listen for that png watermark stream and would insert it only when streamed from the png ffmpeg stream process. How is it achievable? What I have tried is to stream the png with image2pipe format but it transforms the images in mjpeg and also tried to stream .webm files since the vp9 codec supports alpha but when receiving the webm stream the main process doesn't like the input format. Thank you for your attention










    share|improve this question



























      0












      0








      0







      What I would like to achieve is to stream a PNG image (containing alpha background) to localhost in order to use it as input to watermark the main video stream. For example I have a ffmpeg process that would stream the png:



      ffmpeg -loop 1 -i image_with_alpha_backgroung.png -options options protocol://localhost:3000


      Main ffmpeg process:



      ffmpeg -i main_video -i protocol://localhost:3000 -filter_complex overlay -f flv rtmp://streaming_server


      The main ffmpeg process would listen for that png watermark stream and would insert it only when streamed from the png ffmpeg stream process. How is it achievable? What I have tried is to stream the png with image2pipe format but it transforms the images in mjpeg and also tried to stream .webm files since the vp9 codec supports alpha but when receiving the webm stream the main process doesn't like the input format. Thank you for your attention










      share|improve this question















      What I would like to achieve is to stream a PNG image (containing alpha background) to localhost in order to use it as input to watermark the main video stream. For example I have a ffmpeg process that would stream the png:



      ffmpeg -loop 1 -i image_with_alpha_backgroung.png -options options protocol://localhost:3000


      Main ffmpeg process:



      ffmpeg -i main_video -i protocol://localhost:3000 -filter_complex overlay -f flv rtmp://streaming_server


      The main ffmpeg process would listen for that png watermark stream and would insert it only when streamed from the png ffmpeg stream process. How is it achievable? What I have tried is to stream the png with image2pipe format but it transforms the images in mjpeg and also tried to stream .webm files since the vp9 codec supports alpha but when receiving the webm stream the main process doesn't like the input format. Thank you for your attention







      ffmpeg video-streaming png alpha webm






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      edited Dec 14 at 16:55

























      asked Nov 16 at 9:38









      cub33

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