On Dec 13, 2013, at 5:25 AM, Luca Barbato <[email protected]> wrote:
> On 12/12/13 05:10, Jeremy Hansen wrote: >> >> >> On Dec 11, 2013, at 5:32 AM, Luca Barbato <[email protected]> wrote: >> >>> On 11/12/13 03:41, Jeremy Hansen wrote: >>>> >>>> Right now I’m using avconv to capture video from a BlackMagic Design Mini >>>> Recorder PCIe card. This is working great. My next step is to trying to >>>> stream live to a rtmp server (Using nginx and the rtmp module). >>>> >>>> Here’s my current command line: >>>> >>>> bmdcapture -C 0 -m 14 -V 3 -A 2 -F nut -f pipe:1 | \ >>>> avconv -y -i - -c:v libx264 -c:a aac -ar 44100 -strict experimental -s >>>> 640x360 -b:a 160k /pub/video/"$SHOW"_$TIME.mp4 >>>> >>>> What would I have to do to stream to rtmp as well? >>>> >>> >>> Have a rtmp server somewhere (crtmpd is my current favourite) and >>> replace /pub/video/"$SHOW"_$TIME.mp4 with rtmp://serverhost/app/path/ >> >> Understood, but I’m trying to write to both a file and a stream >> simultaneously. >> >> I have this working…meaning, it starts, but rapidly fails after a few >> moments. Here’s my current command line: >> >> bmdcapture -C 0 -m 14 -V 3 -A 2 -F nut -f pipe:1 | avconv -y -i - -copytb >> -c:v libx264 -c:a aac -ar 44100 -strict experimental -s 640x360 -b:a 160k >> /pub/video/"$SHOW"_$TIME.mp4 -f flv -c:v libx264 -c:a aac -ar 22050 -strict >> experimental -s 384x216 -b:a 64k rtmp://live.mysite.com/myapp/video >> >> But it fails after some moments with this error: >> >> Stopping Capture 22 q=28.0 q=31.0 size= 5138kB time=62.48 bitrate= >> 673.6kbits/s >> Failed to update header with correct duration.0kB time=62.96 bitrate= >> 672.7kbits/s >> [flv @ 0x248b7c0] Failed to update header with correct file size. >> >> Any clues as to what this is? > > Your system is too probably slow, add -preset ultrafast so x264 won’t > tax it too much. Thanks. Do I add this to the first x264 for the file or for the rtmp stream or both? -jeremy > > crtmpd has a commercial variant doing pretty much all you want > streaming-wise, I hadn't tried myself but I heard good informations > about it. > > lu > _______________________________________________ > libav-tools mailing list > [email protected] > https://lists.libav.org/mailman/listinfo/libav-tools _______________________________________________ libav-tools mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-tools
