OK, thank you anyway. You helped me to start with Melt.
I have found a configuration which more or less suits my needs. I wanted to publish it here in case it can also help anyone. I don't use audiomap filter since I am not getting good results with it (not even wrapping the clip into a xml file). I get best results doing this: audio_index=all channels=16 channels.0=2 channels.1=2 channels.2=2 channels.3=2 channels.4=2 channels.5=2 channels.6=2 channels.7=2 So the complete melt command I am using is: For avformat output: melt -profile atsc_1080i_50 test_TS_8_audios.ts audio_index=all -consumer avformat:udp://224.168.225.202:2002?pkt_size=1316\&reuse=1 real_time=1 terminate_on_pause=0 f=mpegts vcodec=mpeg2video vb=5M s=1280x720 acodec=mp2 ab=256k channels=16 channels.0=2 channels.1=2 channels.2=2 channels.3=2 channels.4=2 channels.5=2 channels.6=2 channels.7=2 The same for decklink output but instead of -consumer avformat, -consumer decklink:0 In Melted format, my config file has this for audio mapping: USET U1 producer.audio_index=all USET U1 consumer.channels.0=2 USET U1 consumer.channels.1=2 USET U1 consumer.channels.2=2 USET U1 consumer.channels.3=2 USET U1 consumer.channels.4=2 USET U1 consumer.channels.5=2 USET U1 consumer.channels.6=2 USET U1 consumer.channels.7=2 USET U1 consumer.acodec=mp2 USET U1 consumer.ab=256k With this I get all input channels properly mapped in the output: up to 16 channels for avformat consumer and 8 channels for decklink consumer, with the issues I described before when using decklink (impossible to do it with an odd number of audio pairs). Regards, David On 27 October 2016 at 01:56, Dan Dennedy <d...@dennedy.org> wrote: > I am unable to help you any further. I do not use Melted as I do not use > MLT for broadcast. I have not used the decklink consumer with more than 8 > channels. I simply provided some information in the hopes you can try to > figure out what you can do with it. > > > On Wed, Oct 26, 2016 at 8:38 AM David Alonso Grande <dalon...@gmail.com> > wrote: > >> Hello Dan, >> >> thank you for your quick answer. >> >> I have made some progress but I don't have it working yet. >> >> I will split my reply in two (-consumer avformat and -consumer decklink) >> because I am getting different behaviour on audiomap depending on the >> consumer. >> >> I will reply in two different emails. I think it will be better to follow >> up. >> >> >> With -consumer decklink: >> >> I manage to get something close to a proper output when my input clip has >> an even number of audio tracks (not channels, but tracks). I have made >> tests using input clips with 2, 3, 4 and 8 audio tracks. Please see below >> ffprobe details of the input clips I am using. >> >> >> This is what I have seen so far: >> >> >> - If I set: consumer.channels param to any value different than 2, I >> always get 8 channels (4 tracks) in the output regardless of the number of >> channels in the input clip. >> For example: in my TEST 1 (see details below) I get four tracks in the >> output: 0 --> eng, 1 --> spa, and then tracks 2 and 3 are the duplicated of >> the first two ones: 2 --> eng, 3 --> spa. >> >> - If I use an input clip with an odd number of tracks (i.e in TEST 2, >> with three tracks) I get a sound mix of all the three input tracks in every >> output track. (one output track if I set: consumer.channels=2 or 4 if I >> set, consumer.channels=16). >> >> - I don't manage to get more than 4 audio tracks in the output (even when >> I use an 8 tracks input clip, in TEST 4). Theoretically, I should be able >> to get up to 8 tracks (16 channels) in the SDI output, right? >> >> - Audiomap filter works for clips with an even number of tracks although >> its use is not mandatory. Only when I want to change the matching between >> the input and the output channels. If I don't use it, melt does a direct >> mapping: 0=0, 1=1, 2=2...and so on. It does it right in TEST 3. >> >> - Audiomap filter does not fix my output when I use clips with odd number >> of audio tracks. In TEST 2, I always get a sound mix in every output >> channel no matter if I wrapp the input clip into a xml file with the >> audiomap filter or not. I get the same behaviour from melt with and without >> audiomap filter in this case. >> >> I am stuck with audio mapping at this point. >> >> - I would need to get the same number of audio tracks in the output as >> the ones in the input, regardless of the number (even or odd). >> - I would need to be able to get more than 4 audio tracks in the output. >> Sometimes we use all of them (8) for regional languages. >> >> Any help would be appreciated. >> >> Thank you for your time, >> >> David >> >> >> >> MELTED CONFIG FILE: >> >> ### ADD DECKLINK CARD #### >> UADD decklink:0 >> >> ### CONFIG U0 (DECKLINK) PLAYER PARAMS #### >> ### INFINITE LOOP ### >> USET U0 eof=loop >> USET U0 consumer.mlt_profile=atsc_1080i_50 >> USET U0 consumer.terminate_on_pause=0 >> USET U0 consumer.real_time=1 >> USET U0 consumer.channels=16 >> USET U0 producer.audio_index=all >> >> >> See ffprobe info for each of the input clips below: >> >> TEST 1. Input clip: test_2_audios_dag.mp4 >> >> Metadata: >> handler_name : VideoHandler >> timecode : 01:00:00:00 >> Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, >> stereo, fltp, 192 kb/s (default) >> Metadata: >> handler_name : SoundHandler >> Stream #0:2(spa): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, >> stereo, fltp, 192 kb/s >> Metadata: >> handler_name : SoundHandler >> Stream #0:3(eng): Data: none (tmcd / 0x64636D74) >> Metadata: >> handler_name : TimeCodeHandler >> timecode : 01:00:00:00 >> >> TEST 2. Input clip: test_3_audios_dag.mp4 >> >> handler_name : VideoHandler >> timecode : 01:00:00:00 >> Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, >> stereo, fltp, 192 kb/s (default) >> Metadata: >> handler_name : SoundHandler >> Stream #0:2(spa): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, >> stereo, fltp, 192 kb/s >> Metadata: >> handler_name : SoundHandler >> Stream #0:3(grc): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, >> stereo, fltp, 192 kb/s >> Metadata: >> handler_name : SoundHandler >> Stream #0:4(eng): Data: none (tmcd / 0x64636D74) >> Metadata: >> handler_name : TimeCodeHandler >> timecode : 01:00:00:00 >> >> TEST 3. Input clip: test_4_audios_dag.mp4 >> >> >> handler_name : VideoHandler >> timecode : 01:00:00:00 >> Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, >> stereo, fltp, 192 kb/s (default) >> Metadata: >> handler_name : SoundHandler >> Stream #0:2(spa): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, >> stereo, fltp, 192 kb/s >> Metadata: >> handler_name : SoundHandler >> Stream #0:3(grc): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, >> stereo, fltp, 192 kb/s >> Metadata: >> handler_name : SoundHandler >> Stream #0:4(pol): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, >> stereo, fltp, 192 kb/s >> Metadata: >> handler_name : SoundHandler >> Stream #0:5(eng): Data: none (tmcd / 0x64636D74) >> Metadata: >> handler_name : TimeCodeHandler >> timecode : 01:00:00:00 >> >> >> TEST 4: Input clip: test_8_audios.mp4 >> >> handler_name : VideoHandler >> timecode : 01:00:00:00 >> Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, >> stereo, fltp, 192 kb/s (default) >> Metadata: >> handler_name : SoundHandler >> Stream #0:2(spa): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, >> stereo, fltp, 192 kb/s >> Metadata: >> handler_name : SoundHandler >> Stream #0:3(blg): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, >> stereo, fltp, 192 kb/s >> Metadata: >> handler_name : SoundHandler >> Stream #0:4(grc): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, >> stereo, fltp, 192 kb/s >> Metadata: >> handler_name : SoundHandler >> Stream #0:5(pol): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, >> stereo, fltp, 192 kb/s >> Metadata: >> handler_name : SoundHandler >> Stream #0:6(fra): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, >> stereo, fltp, 192 kb/s >> Metadata: >> handler_name : SoundHandler >> Stream #0:7(est): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, >> stereo, fltp, 192 kb/s >> Metadata: >> handler_name : SoundHandler >> Stream #0:8(hrv): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, >> stereo, fltp, 192 kb/s >> Metadata: >> handler_name : SoundHandler >> Stream #0:9(eng): Data: none (tmcd / 0x64636D74) >> Metadata: >> handler_name : TimeCodeHandler >> timecode : 01:00:00:00 >> >> >> >> >> On 21 October 2016 at 06:05, Dan Dennedy <d...@dennedy.org> wrote: >> >> First, you need to configure the consumer with the desired number of >> output channels you want, because the default is 2. In melted you do that >> with something like "USET U0 consumer.channels=8" before starting the >> consumer for playback. Why 8 instead of 6? See this >> http://permalink.gmane.org/gmane.comp.video.mlt.devel/2346 >> >> Next, the avformat producer defaults to the first audio track. You can >> change that on the producer by setting the property audio_index=N where N >> is an integer value corresponding to the stream index reported by meta >> properties in the XML output, -1 to say no audio, or the special value >> "all" to ask to read all of the audio tracks and their channels. For your >> case, you want "all" and in melted you do something like "USET U0 >> producer.audio_index=all" _before_ loading a clip. This will make melted >> set that property on all producers you load until you change that value. >> >> Lastly, you might need to remap the audio channels from input to output >> and for that you use the "audiomap" filter: https://www.mltframework.org/ >> plugins/FilterAudiomap/ >> However, melted does not make it easy to add filters. I think if you need >> to do this, you need to make a MLT XML wrapper for the clip wherein you >> attach the filter. Then, you load the XML file in melted instead of the >> clip directly. When making this XML file, you can also set the audio_index >> instead of doing it through melted MVCP. You can use melt to generate the >> XML: >> melt -profile atsc_1080i_50 test_audio_3.mp4 audio_index=all -attach >> audiomap 0=0 1=1 2=4 3=5 4=2 5=3 -consumer xml:test_audio_3.mlt >> >> >> On Thu, Oct 20, 2016 at 10:24 AM David Alonso Grande <dalon...@gmail.com> >> wrote: >> >> Hello, >> >> I am using melted as a playout server with outputs: a decklink monitor >> card and avformat udp ouput. >> >> >> I do not have any problems when my input clips have only one audio >> channel, but if they have more than one I only get the first audio channel >> in the output. >> Can anyone help me? >> >> I provide *details below:* >> >> melt -version >> melt 6.3.0 >> >> >> *INPUT CLIP:* test_audio_3.mp4 >> >> *INPUT CLIP DETAILS:* >> >> mlt@OVE-DAG:~/test_files$ cat test_audio_3_details.txt >> <?xml version="1.0"?> >> <mlt LC_NUMERIC="en_US.UTF-8" version="6.3.0" title="test_audio_3.mp4"> >> <profile description="automatic" width="1920" height="1080" >> progressive="1" sample_aspect_num="1" sample_aspect_den="1" >> display_aspect_num="1920" display_aspect_den="1080" frame_rate_num="25" >> frame_rate_den="1" colorspace="709"/> >> <producer id="producer0" in="0" out="10136"> >> <property name="length">10137</property> >> <property name="eof">pause</property> >> <property name="resource">./test_audio_3.mp4</property> >> <property name="meta.media.nb_streams">5</property> >> <property name="meta.media.0.stream.type">video</property> >> <property name="meta.media.0.stream.frame_rate">25</property> >> <property name="meta.media.0.stream.sample_aspect_ratio">0</property> >> <property name="meta.media.0.codec.width">1920</property> >> <property name="meta.media.0.codec.height">1080</property> >> <property name="meta.media.0.codec.rotate">0</property> >> <property name="meta.media.0.codec.frame_rate">25</property> >> <property name="meta.media.0.codec.pix_fmt">yuv420p</property> >> <property name="meta.media.0.codec.sample_aspect_ratio">1</property> >> <property name="meta.media.0.codec.colorspace">709</property> >> <property name="meta.media.0.codec.name">h264</property> >> <property name="meta.media.0.codec.long_name">H.264 / AVC / MPEG-4 >> AVC / MPEG-4 part 10</property> >> <property name="meta.media.0.codec.bit_rate">4704236</property> >> <property name="meta.attr.0.stream.handler_name.markup"> >> VideoHandler</property> >> <property name="meta.attr.0.stream.timecode.markup">01:00:00:00</ >> property> >> <property name="meta.media.1.stream.type">audio</property> >> <property name="meta.media.1.codec.sample_fmt">fltp</property> >> <property name="meta.media.1.codec.sample_rate">48000</property> >> <property name="meta.media.1.codec.channels">2</property> >> <property name="meta.media.1.codec.name">aac</property> >> <property name="meta.media.1.codec.long_name">AAC (Advanced Audio >> Coding)</property> >> <property name="meta.media.1.codec.bit_rate">192000</property> >> <property name="meta.attr.1.stream.handler_name.markup"> >> SoundHandler</property> >> <property name="meta.media.2.stream.type">audio</property> >> <property name="meta.media.2.codec.sample_fmt">fltp</property> >> <property name="meta.media.2.codec.sample_rate">48000</property> >> <property name="meta.media.2.codec.channels">2</property> >> <property name="meta.media.2.codec.name">aac</property> >> <property name="meta.media.2.codec.long_name">AAC (Advanced Audio >> Coding)</property> >> <property name="meta.media.2.codec.bit_rate">192004</property> >> <property name="meta.attr.2.stream.handler_name.markup"> >> SoundHandler</property> >> <property name="meta.media.3.stream.type">audio</property> >> <property name="meta.media.3.codec.sample_fmt">fltp</property> >> <property name="meta.media.3.codec.sample_rate">48000</property> >> <property name="meta.media.3.codec.channels">2</property> >> <property name="meta.media.3.codec.name">aac</property> >> <property name="meta.media.3.codec.long_name">AAC (Advanced Audio >> Coding)</property> >> <property name="meta.media.3.codec.bit_rate">192000</property> >> <property name="meta.attr.3.stream.handler_name.markup"> >> SoundHandler</property> >> <property name="meta.attr.major_brand.markup">isom</property> >> <property name="meta.attr.minor_version.markup">512</property> >> <property name="meta.attr.compatible_brands.markup"> >> isomiso2avc1mp41</property> >> <property name="meta.attr.encoder.markup">Lavf57.36.100</property> >> <property name="seekable">1</property> >> <property name="meta.media.sample_aspect_num">1</property> >> <property name="meta.media.sample_aspect_den">1</property> >> <property name="aspect_ratio">1</property> >> <property name="audio_index">1</property> >> <property name="video_index">0</property> >> <property name="mute_on_pause">1</property> >> <property name="mlt_service">avformat</property> >> </producer> >> <playlist id="playlist0"> >> <entry producer="producer0" in="0" out="10136"/> >> </playlist> >> <tractor id="tractor0" title="test_audio_3.mp4" global_feed="1" in="0" >> out="10136"> >> <track producer="playlist0"/> >> </tractor> >> </mlt> >> >> As you can see: there are three audio tracks in the input clip. >> >> >> *MELT COMMAND:* >> >> melt eof=loop -profile atsc_1080i_50 test_audio_3.mp4 -consumer >> avformat:udp://224.168.225.202:2002?pkt_size=1316\&reuse=1 >> <http://224.168.225.202:2002?pkt_size=1316%5C&reuse=1> real_time=1 >> terminate_on_pause=0 f=mpegts vcodec=mpeg2video vb=5M s=1280x720 acodec=mp2 >> ab=256k >> >> >> This is the melt command I am using (the same in melted server) but in >> udp://224.168.225.202:2002 multicast address I only get the first audio >> track. >> >> Any help would be really appreciated. >> >> Regards, >> >> David >> >> >> >> >> ------------------------------------------------------------ >> ------------------ >> Check out the vibrant tech community on one of the world's most >> engaging tech sites, SlashDot.org! http://sdm.link/slashdot______ >> _________________________________________ >> Mlt-devel mailing list >> Mlt-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/mlt-devel >> >> >>
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