On 7.08.2013 6:38, Dan Dennedy wrote: > On Tue, Aug 6, 2013 at 1:00 AM, Alar Sing <alar.s...@err.ee> wrote: >> Hello, >> >> I'm testing melt for internet broacasting. >> My setup is that i have decklink sdi card for live broadcast input and >> multiple h264 outputs for different screen sizes. >> Everything is fine when I one consumer: >> >> melt -profile square_pal_wide consumer:decklink: profile=dv_pal_wide >> -consumer avformat:rtmp://host/live/test properties=err/x264-medium-main >> >> Sample picture from output >> http://londiste.etv.ee/users/arclyde/melt-normal.PNG >> >> But if I dry to use more than one consumer then there is problem: my wide >> screen input is compresse to 4:3 >> >> melt -profile square_pal_wide consumer:decklink: profile=dv_pal_wide >> -consumer avformat:rtmp://host/live/testm >> properties=err/x264-medium-baseline -consumer avformat:rtmp://host/live/test >> properties=err/x264-medium-main >> >> Sample picture from output >> http://londiste.etv.ee/users/arclyde/melt-broken.PNG > I found a bug and pushed a fix for it into git. Are in a position to > build MLT yourself? Latest source from git fixed my problem. Thank you. >> Profiles are from mlt source. >> My properties for baseline >> http://londiste.etv.ee/users/arclyde/x264-medium-baseline >> My properties for main http://londiste.etv.ee/users/arclyde/x264-medium-main >> >> There is documentation for using consumer multi ( >> http://www.mltframework.org/bin/view/MLT/ConsumerMulti ) > I see some of the documentation is not properly escaped for HTML. I > need to improve my script that generates these pages. You can also > view it with "melt -query consumer=multi". > >> melt -profile square_pal_wide consumer:decklink: profile=dv_pal_wide >> -consumer multi 0=avformat:rtmp://host/live/testm >> 0.properties=err/x264-medium-baseline 1=avformat:rtmp://host/live/test >> 1.properties=err/x264-medium-main >> >> But this gives error: *** Error in `melt': double free or corruption >> (!prev): 0x00007f52d006c0e0 *** > I think the problem here is that the preset failed to load, then > encoding setup was rejected by libavcodec, and it failed miserably. > When you try to refer to a preset from the installation path, then > there is some "lookup magic" that might not be working here. > > Also, the documentation "You can put these into a MLT properties file > and supply that to this consumer." is a little confusing or > misleading. It means that if you know the MLT properties file syntax, > you can put all of these options into a text file and supply that text > file name as an argument to the multi consumer. For example: > $ melt ... -consumer multi:my.properties > > where my.properties contains something like: > 0=decklink > .mlt_profile=atsc_1080i_50 > .buffer=50 > .prefill=1 > 1=sdl > .mlt_profile=quarter_pal > .buffer=50 > .prefill=1 > > or as a YAML file: > > - mlt_service: decklink > mlt_profile: atsc_1080i_5994 > buffer: 3 > - mlt_service: sdl > mlt_profile: quarter_ntsc > - mlt_service: avformat > target: test.dv > mlt_profile: dv_ntsc > properties: DV > Tested with melt -profile square_pal_wide consumer:decklink: profile=dv_pal_wide -filter crop top=4 -consumer multi:err.properties Output was [swscaler @ 0x7f20800016e0] Warning: data is not aligned! This can lead to a speedloss [mp2 @ 0x7f20c002fb60] Channel layout not specified [mp2 @ 0x7f20b8013920] Channel layout not specified [mp2 @ 0x7f20b0013920] Channel layout not specified [mpeg @ 0x7f20b800b3c0] VBV buffer size not set, muxing may fail [mpeg @ 0x7f20c0027620] VBV buffer size not set, muxing may fail [mpeg @ 0x7f20c0027620] Encoder did not produce proper pts, making some up. [mpeg @ 0x7f20b000b3c0] VBV buffer size not set, muxing may fail
My err.properties file: 0=avformat:rtmp://host/live/testm .mlt_profile=err_low .properties=err/x264-medium-baseline 1=avformat:rtmp://host/live/test .mlt_profile=err_normal .properties=err/x264-medium-main 2=avformat:rtmp://host/live/testh .mlt_profile=err_high .properties=err/x264-medium-high It seems like properties is not loaded and producer avformat uses wrong settings. ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite! It's a free troubleshooting tool designed for production. Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk _______________________________________________ Mlt-devel mailing list Mlt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mlt-devel
