Hello, 
I am new to ffmpeg an have some question concerning the right usage of the ffv1 
codec.
I have images in PIX_FMT_RGB32_1 format which I would like to save with the 
ffv1 codec. Do I need to make a conversion to PIX_FMT_RGBA32 first, or is there 
an option to directly save in PIX_FMT_RGB32_1 format by an configuration 
option? 
I need to capture 8 live streams at once therefore performance is a critical 
issue for me.
Alternatively is there another codec I could use for loseless compression which 
would allow me encoding without previous color conversion? It seems using 
something like HuffYUV whould lead to data loss through doing the color 
conversion.
Finally I have a further question regarding saving of multiple video streams in 
a single avi, mpg or alternative container. Currently I am using a separate avi 
file for each cameras video stream, as I need to identify the stream with the 
hardware ID of each camera. The stream ID is not sufficient for me here as 
plugging a camera on a different firefire port leads to a different camera 
enumeration under windows, through which I would loose the correct assignments. 
Is there a possibility to store a string in a kind of per stream meta data 
array where I could save the hardware id of the corresponding camera? And if so 
in which structure could I find it?

Thanks for your help

Cheers
 Christoph

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