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10th December 2010, 20:48 | #10841 | Link |
A.K.A Mangoat
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I took delivery of a Blackgold 3620 DVB-T2 decoder yesterday so I can cap Freeview HD streams in the UK. I have got it set up with DVBViewer to record the incoming .ts streams - the broadcasts are 1440x1088/50i with AAC audio streams (AAC-LC afaik). Eac3to can correctly identify the streams in the source .ts but it can't proces the AAC tracks in anyway. For example, eac3to says the following when checking a recorded stream:
Code:
eac3to v3.24 command line: eac3to "L:\Recorded TV\12-10_19-18-52_BBC HD_Wild China.ts" ------------------------------------------------------------------------------ TS, 1 video track, 2 audio tracks, 1 subtitle track, 0:01:41, 50i 1: h264/AVC, 1440x1080 50i (16:9) 2: AAC, English, unknown parameters, -1718ms 3: AAC, English, unknown parameters, -1252ms 4: Subtitle (DVB), English Bitstream parsing for tracks 2 and 3 failed. <WARNING> Demuxing these tracks may still produce correct results - or not. <WARNING> Here's a sample: http://www.freefilehosting.net/12-10...bbchdwildchina |
11th December 2010, 15:04 | #10842 | Link | |
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Quote:
After extract with eac3to you need convert this aac to a standard AAC with vlc: Code:
"D:\your path\vlc.exe" -I dummy "China_2 DELAY -1718ms.aac" --sout #std{access=file,mux=mp4,dst="China_2_nolatm.mp4"} vlc://quit Code:
Audio format : AAC-LC Channels ....: 6 SampleRate ..: 48000 Hz. Duration trak: 100.096 sec., (0h. 1m. 40.096s.) BitRate .....: 315 Kb/s Edit: your Track 3 (also LOAS-LATM) seems a: Code:
Audio format : AAC-HE v2 (LC+SBR+PS) Channels ....: 2 SampleRate ..: 48000 Hz. Duration trak: 99.584 sec., (0h. 1m. 39.584s.) BitRate .....: 63 Kb/s
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BeHappy, AviSynth audio transcoder. Last edited by tebasuna51; 11th December 2010 at 20:57. |
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11th December 2010, 16:32 | #10843 | Link | |
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Quote:
With regards to the 2nd audio track, it is likely supposed to be silence - the 2nd track is designed to carry an audio description service, but only 2 - 3 programmes a day actually use the track. Thank you for your assistance. |
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11th December 2010, 20:48 | #10844 | Link | |
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Quote:
vlc remove LOAS and LATM headers and put the header parameters in the mp4 container.
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12th December 2010, 11:59 | #10845 | Link | |
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Quote:
I wonder.... Is there any chance some kind person on this forum can "whip-up" an dedicated application to strip these LOAS/LATM headers from AAC streams? Cheers
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12th December 2010, 21:25 | #10847 | Link | |
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Quote:
LOAS_LATM_to_ADTS.exe: LOAS/LATM AAC to ADTS AAC (ADTS_to_RAW.exe: ADTS AAC to RAW AAC LOAS_LATM_to_RAW.exe: LOAS/LATM AAC to RAW AAC) File name: AAC_Tools_NA_0.1.zip File size: 148.64 KB as well as the zip file includes the source code in Delphi - the same programming language in which eac3to is written and thus such conversion(s) could be included easily in eac3to too Last edited by xkodi; 12th December 2010 at 21:29. |
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13th December 2010, 02:59 | #10848 | Link | |
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See this post http://forum.doom9.org/showthread.php?t=157467 Is the same soft than proposed in http://www.dvbviewer.tv/forum/topic/...ts-conversion/
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13th December 2010, 11:08 | #10849 | Link | |
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Quote:
Is it possible to apply the associated audio delay to the .mp4 output by VRD during the header removal, rather than setting it in the container? |
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13th December 2010, 14:27 | #10851 | Link |
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demux the mp4 to aac and apply the delay then mux back to whatever container you need...
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if you ask a question and somebody give you the correct answer don't forget to leave a "thank you" note... Visit The Land Of Dracula (Romania - EU)! Last edited by b66pak; 13th December 2010 at 14:29. |
13th December 2010, 14:59 | #10852 | Link |
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Thanks both.
I was hoping to avoid yet another step in the process, but it looks like I may just need to go with this. My testing today was: Demux with eac3to Convert audio with VLC Mux video & AAC in .mp4m (with delay) to .ts with Tsmuxer Edit .ts in VideoRedo4 Playback in TMT5 was OK on my dekstop, but it was way out of sync on my HTPC so I'll need to do a little more work. Anyway, enough from me as these really are off topic posts for the eac3to thread. |
14th December 2010, 07:24 | #10853 | Link |
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clash of titans not processed properly
Hi All,
I tried to extract the DTS track (#4) from this Blu-ray movie that I own and the resultant flac file had the wrong track or multiple tracks mixed together because the director's voice was heard over the regular movie audio. I looked at the streams and there was no single stream file for the movie so it looks like it is quite broken up. Any ideas? G
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15th December 2010, 09:32 | #10854 | Link | |
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Quote:
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17th December 2010, 07:25 | #10855 | Link |
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When extracting a Blu-ray Dolby TrueHD track, how do I make eac3to just demux it rather than decoding/encoding? I tried inputting "-core" after "output.thd+ac3" but it's still decoding the TrueHD with libav and encoding the ac3 core with libAften.
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17th December 2010, 12:02 | #10857 | Link | |
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Quote:
Code:
eac3to v3.24 command line: "D:\Programa\eac3to\eac3to.exe" "D:\Test\hd_dolby_truehd.m2ts" 2: "D:\Test\hd_dolby_truehd.m2ts_2.thd+ac3" ------------------------------------------------------------------------------ M2TS, 1 video track, 1 audio track, 0:01:34, 60i /1.001 1: h264/AVC, 1080i60 /1.001 (16:9) 2: TrueHD/AC3, 7.1 channels, 48kHz (embedded: AC3, 5.1 channels, 640kbps, 48kHz) [a02] Extracting audio track number 2... [a02] Creating file "D:\Test\hd_dolby_truehd.m2ts_2.thd+ac3"... Video track 1 contains 2832 frames. eac3to processing took 2 seconds. Done.
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BeHappy, AviSynth audio transcoder. Last edited by tebasuna51; 17th December 2010 at 12:05. |
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19th December 2010, 01:01 | #10860 | Link | |
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Quote:
eac3to input stdout.wav [-down2 -normalize] | Lame -V 4 - output.mp3 Also to Oggenc, or Aften (for 3 or 4 channels).
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