LameXP v4.19 Final · Build #2320 (2021-08-29) - Page 89

bigdog660 · 23rd May 2022, 19:52

Hi, I've been trying to convert AAC in a MP4 container to MP3. I get the following error:

LameXP v4.19 (Build #2320), compiled on 2021-08-29 at 18:25:44

-------------------------------

The format of this file is NOT supported:
C:/Users/rgeer/Downloads/test.mp4

Container Format: dash
Audio Format: Type: AAC, Profile: LC, Bitrate: 126 kbps

Media info gives me this:

General
Complete name : C:\Users\rgeer\Downloads\test.mp4
Format : dash
Codec ID : dash (iso6/mp41)
File size : 3.87 MiB
Duration : 4 min 15 s
Overall bit rate : 127 kb/s
Encoded date : UTC 2017-03-21 21:11:13
Tagged date : UTC 2017-03-21 21:11:13

Audio
ID : 1
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 4 min 15 s
Bit rate : 126 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 44.1 kHz
Frame rate : 43.066 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 3.82 MiB (99%)
Encoded date : UTC 2017-03-21 21:11:13
Tagged date : UTC 2017-03-21 21:11:13

Is there any chance this may be fixed or feature added in the future? Thanks!

manolito · 23rd May 2022, 22:16

You can find information and methods to open this DASH format here:
https://filext.com/file-extension/DASH

LoRd_MuldeR · 24th May 2022, 00:22

Even though your file has a .mp4 file extension, it's not a "regular" MP4 container, but DASH format. This format is not currently supported

I don't know whether FAAD supports this kind of file, but I doubt it. If it does, then support for DASH input could be added to LameXP. You could always try yourself:

Code:

faad.exe -o output.wav your_input.mp4

If FAAD cannot handle this kind of file directly, maybe you could use MP4box to demux the AAC stream?

lvqcl · 24th May 2022, 07:28

IIRC it's possible to remux it from DASH-MP4 to regular MP4 using ffmpeg.

bigdog660 · 25th May 2022, 14:09

Thanks for all the info guys. ffmpeg does the job, but I was liking the LameXP GUI. I finally used my head, and found a ffmpeg GUI that works well enough for DASH to MP3 conversion. For kicks and giggles, I'll give FAAD and MP4box try and report back soon. Been a long time since I've used them independently.

SeeMoreDigital · 25th May 2022, 15:38

Why not de-mux the elementary AAC audio stream out of the .mp4 container prior to re-encoding to .mp3?

EDIT: That being said... Why bother re-encoding to mp3 when LC-AAC at the same bit-rate is superior?!

mike20021969 · 27th May 2022, 08:23

Hi.

With AAC encoding:
Could you include as an additional option format ADTS (Audio Data Transport Stream) with an .aac file extension?
Thanks.

LoRd_MuldeR · 27th May 2022, 12:46

It appears that QAAC has an option to output ADTS, but neither FDKAAC nur NeroAAC has such option.

Why would you need ADTS anyway? MP4 is, by far, the most widely used standard container for AAC. Also, you can always demux from the MP4 container, e.g. by using MP4Box.

LoRd_MuldeR · 19th June 2022, 14:05

LameXP v4.20 Beta-2
https://sourceforge.net/projects/lam...29/2022-06-19/

Quote:

Changes between v4.19 and v4.20:
* Updated MediaInfo to v22.03 (2022-03-31), compiled with ICL 2021.2 and MSVC 15.9
* Implemented workaround for DwmEnableBlurBehindWindow() not working on Windows 11

24th May 2022, 00:22	#1763 \| Link
LoRd_MuldeR Software Developer Join Date: Jun 2005 Location: Last House on Slunk Street Posts: 13,230	Even though your file has a .mp4 file extension, it's not a "regular" MP4 container, but DASH format. This format is not currently supported I don't know whether FAAD supports this kind of file, but I doubt it. If it does, then support for DASH input could be added to LameXP. You could always try yourself: Code: faad.exe -o output.wav your_input.mp4 If FAAD cannot handle this kind of file directly, maybe you could use MP4box to demux the AAC stream? __________________ Go to https://standforukraine.com/ to find legitimate Ukrainian Charities 🇺🇦✊ Last edited by LoRd_MuldeR; 24th May 2022 at 00:29.

25th May 2022, 15:38	#1766 \| Link
SeeMoreDigital Life's clearer in 4K UHD Join Date: Jun 2003 Location: Notts, UK Posts: 12,057	Why not de-mux the elementary AAC audio stream out of the .mp4 container prior to re-encoding to .mp3? EDIT: That being said... Why bother re-encoding to mp3 when LC-AAC at the same bit-rate is superior?! __________________ \| I've been testing hardware media playback devices and software A/V encoders and decoders since 2001 \| My Network Layout & A/V Gear \| Last edited by SeeMoreDigital; 27th May 2022 at 10:05.

27th May 2022, 12:46	#1768 \| Link
LoRd_MuldeR Software Developer Join Date: Jun 2005 Location: Last House on Slunk Street Posts: 13,230	It appears that QAAC has an option to output ADTS, but neither FDKAAC nur NeroAAC has such option. Why would you need ADTS anyway? MP4 is, by far, the most widely used standard container for AAC. Also, you can always demux from the MP4 container, e.g. by using MP4Box. __________________ Go to https://standforukraine.com/ to find legitimate Ukrainian Charities 🇺🇦✊

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23rd May 2022, 19:52	#1761 \| Link
bigdog660 Registered User Join Date: Mar 2004 Posts: 63	Hi, I've been trying to convert AAC in a MP4 container to MP3. I get the following error: LameXP v4.19 (Build #2320), compiled on 2021-08-29 at 18:25:44 ------------------------------- The format of this file is NOT supported: C:/Users/rgeer/Downloads/test.mp4 Container Format: dash Audio Format: Type: AAC, Profile: LC, Bitrate: 126 kbps Media info gives me this: General Complete name : C:\Users\rgeer\Downloads\test.mp4 Format : dash Codec ID : dash (iso6/mp41) File size : 3.87 MiB Duration : 4 min 15 s Overall bit rate : 127 kb/s Encoded date : UTC 2017-03-21 21:11:13 Tagged date : UTC 2017-03-21 21:11:13 Audio ID : 1 Format : AAC LC Format/Info : Advanced Audio Codec Low Complexity Codec ID : mp4a-40-2 Duration : 4 min 15 s Bit rate : 126 kb/s Channel(s) : 2 channels Channel layout : L R Sampling rate : 44.1 kHz Frame rate : 43.066 FPS (1024 SPF) Compression mode : Lossy Stream size : 3.82 MiB (99%) Encoded date : UTC 2017-03-21 21:11:13 Tagged date : UTC 2017-03-21 21:11:13 Is there any chance this may be fixed or feature added in the future? Thanks!

23rd May 2022, 22:16	#1762 \| Link
manolito Registered User Join Date: Sep 2003 Location: Berlin, Germany Posts: 3,020	You can find information and methods to open this DASH format here: https://filext.com/file-extension/DASH

24th May 2022, 07:28	#1764 \| Link
lvqcl Registered User Join Date: Aug 2015 Posts: 236	IIRC it's possible to remux it from DASH-MP4 to regular MP4 using ffmpeg.

25th May 2022, 14:09	#1765 \| Link
bigdog660 Registered User Join Date: Mar 2004 Posts: 63	Thanks for all the info guys. ffmpeg does the job, but I was liking the LameXP GUI. I finally used my head, and found a ffmpeg GUI that works well enough for DASH to MP3 conversion. For kicks and giggles, I'll give FAAD and MP4box try and report back soon. Been a long time since I've used them independently.

27th May 2022, 08:23	#1767 \| Link
mike20021969 Registered User Join Date: Jul 2007 Location: UK Posts: 336	Hi. With AAC encoding: Could you include as an additional option format ADTS (Audio Data Transport Stream) with an .aac file extension? Thanks.