Quote:
Originally Posted by twobob
I'm Digging around getting the audio working. (That's my background) any tips? I got the video streaming working and I know GM is close on this one already.
 I would PM but I'm sure everyone want's to know. I got my tools working now. Happy to help. |
WHAT tools did you get working?
I compiled ffmpeg to run on the kindle (with all options, but no alsa sound). I can play a video, and output RAW 800x600 monochrome video to my "gmvid transcoder" (piped through stdout/stdin). The pipe that to gzip and to a file (which is how I transcoded the *.gmvid.gz files in the first post). I can ALSO start another instance of ffmpeg playing the audio piped to stdout, then to the kindles built-in audio player (using stdin).
On the K4 and K5, it can play realtime video and audio that way (even from x.264 1080p source material). But on a K3, it works better playing 640x480 DivX video). The K3 cannot do x.264 decoding in realtime (using the compiler options I used to build ffmpeg).
My ffmpeg can also record the kindle framebuffer direct to video.
What I really want is a program that can output video and audio without audio glitches (like the other kindle video player does).
If we want to continue supporting piping like I use now, I need to interleave the audio into my gmv files (which are now just raw dithered 600x800 video packed 8 binary pixels per byte, no file header). I was thinking of adding a file header OVERLAYING the first video frame (for compatibility with old players). A new player could detect a magic number in the header and not display that first frame. The header could say what kind of audio it contains, and other video stuff)...
Just ideas. I do not remember -- did I even publish my gmvid transcoder anywhere (stdin 8-bit pixels, stdout dithered packed binary pixels)? If not, I can do it in a couple of weeks.
P.S. What did you think of the "Harvey" video?