Quicktime Error 2041 an invalid sample description was found in the movie
After converting an MPEG-TS file to mp4, I had trouble with some players. Particularly, the latest Quicktime (7.6.5) wouldn't play it, saying "Error -2041: an invalid sample description was found in the movie".
Searching Google on this error turned up thousands of results, but nothing I read was directly useful. The main "solution" proposed was "rename the .mp4 file to .3gp". That seems to work in some cases for .3gp phone files which the phone happens to name .mp4.
The only solution which worked for me was to use mp4creator with the " -aac-profile=4" option.
In case anybody wants to know all the details, they are below. If you happen to know the real source of the problem and/or a version of MP4Box or ffmpeg which fixes the problem, please leave a comment.
The source file was an MPEG-TS containing h264 video and aac audio. ffmpeg reported this:
$ ffmpeg -i INPUT_FILE.mpg
FFmpeg version 0.5-svn17737+3:0.svn20090303-1ubuntu6, Copyright (c) 2000-2009 Fabrice Bellard, et al.
configuration: --enable-gpl --enable-postproc --enable-swscale --enable-x11grab
--extra-version=svn17737+3:0.svn20090303-1ubuntu6 --prefix=/usr --enable-avfilter
--enable-avfilter-lavf --enable-libgsm --enable-libschroedinger --enable-libspeex
--enable-libtheora --enable-libvorbis --enable-pthreads --disable-stripping --disable-vhook
--enable-libdc1394 --disable-armv5te --disable-armv6 --disable-armv6t2 --disable-armvfp
--disable-neon --disable-altivec --disable-vis --enable-shared --disable-static
libavutil 49.15. 0 / 49.15. 0
libavcodec 52.20. 0 / 52.20. 0
libavformat 52.31. 0 / 52.31. 0
libavdevice 52. 1. 0 / 52. 1. 0
libavfilter 0. 4. 0 / 0. 4. 0
libswscale 0. 7. 1 / 0. 7. 1
libpostproc 51. 2. 0 / 51. 2. 0
built on Apr 10 2009 23:18:41, gcc: 4.3.3
Seems stream 0 codec frame rate differs from container frame rate: 50.00 (50/1) -> 25.00 (25/1)
Input #0, mpegts, from 'INPUT_FILE.mpg':
Duration: 00:00:36.05, start: 2.050022, bitrate: 9188 kb/s
Program 1
Stream #0.0[0x810]: Video: h264, yuv420p, 1280x688 [PAR 1:1 DAR 80:43], 25 tbr, 90k tbn, 50 tbc
Stream #0.1[0x814](eng): Audio: aac, 48000 Hz, stereo, s16, 184 kb/s
The simple thing I did first and which gave a bad file was
$ ffmpeg -i INPUT_FILE.mpg -vcodec copy -acodec copy -f mp4 ffmpeg.mp4
Looking at that file with various tools gives this:
$ mp4info ffmpeg.mp4 mp4info version 1.6 ffmpeg.mp4: Track Type Info 1 video H264 High@4.1, 36.000 secs, 7889 kbps, 1280x688 @ 25.000000 fps 2 audio MPEG-4 Unknown Profile(0), 36.032 secs, 0 kbps, 48000 Hz Tool: Lavf52.31.0
$ MP4Box -info ffmpeg.mp4 * Movie Info * Timescale 1000 - Duration 00:00:36.032 Fragmented File no - 2 track(s) File Brand isom - version 512 Created: GMT Fri Jan 2 00:00:00 1970 File has no MPEG4 IOD/OD iTunes Info: Encoder Software: Lavf52.31.0 Track # 1 Info - TrackID 1 - TimeScale 50 - Duration 00:00:36.000 Media Info: Language "Undetermined" - Type "vide:avc1" - 900 samples MPEG-4 Config: Visual Stream - ObjectTypeIndication 0x21 AVC/H264 Video - Visual Size 1280 x 688 - Profile High @ Level 4.1 NAL Unit length bits: 32 Pixel Aspect Ratio 1:1 - Indicated track size 1280 x 688 Self-synchronized Track # 2 Info - TrackID 2 - TimeScale 48000 - Duration 00:00:36.032 Media Info: Language "English" - Type "soun:mp4a" - 1689 samples MPEG-4 Config: Audio Stream - ObjectTypeIndication 0x40 Segmentation fault
Next, I tried to extract them separately:
ffmpeg -i INPUT_FILE.mpg -an -vcodec copy -f h264 video.h264 ffmpeg -i INPUT_FILE.mpg -vn -acodec copy -f aac audio.aac
and re-mux them using MP4Box (version 0.4.4):
$ MP4Box -add video.h264#video -add audio.aac#audio mp4box.mp4
That didn't work any better, even though mp4box didn't report a segmentation fault anymore:
$ MP4Box -info mp4box.mp4 * Movie Info * ⁞ Timescale 600 - Duration 00:00:36.031 Fragmented File no - 2 track(s) File Brand isom - version 1 Created: GMT Sat Feb 27 15:33:40 2010 File has root IOD Scene PL 0xff - Graphics PL 0xff - OD PL 0xff Visual PL: AVC/H264 Profile (0x15) Audio PL: AAC Profile @ Level 2 (0x29) No streams included in root OD Track # 1 Info - TrackID 1 - TimeScale 25000 - Duration 00:00:36.000 Media Info: Language "Undetermined" - Type "vide:avc1" - 900 samples MPEG-4 Config: Visual Stream - ObjectTypeIndication 0x21 AVC/H264 Video - Visual Size 1280 x 688 - Profile High @ Level 4.1 NAL Unit length bits: 32 Pixel Aspect Ratio 1:1 - Indicated track size 1280 x 688 Self-synchronized Track # 2 Info - TrackID 2 - TimeScale 48000 - Duration 00:00:36.032 Media Info: Language "Undetermined" - Type "soun:mp4a" - 1689 samples MPEG-4 Config: Audio Stream - ObjectTypeIndication 0x67 MPEG-2 Audio AAC LC - 2 Channel(s) - SampleRate 48000 Synchronized on stream 1
and mp4info also seemed to like the file better:
$ mp4info mp4box.mp4 mp4info version 1.6 mp4box.mp4: Track Type Info 1 video H264 High@4.1, 36.000 secs, 7717 kbps, 1280x688 @ 25.000000 fps 2 audio MPEG-2 AAC LC, 36.032 secs, 150 kbps, 48000 Hz
Note that re-wrapping this into a Quicktime .mov file ($ ffmpeg -i mp4box.mp4 -acodec copy -vcodec copy -f mov mp4box.mov) worked and gave a file Quicktime played without trouble.
But to get a working .mp4, I had to use yet another tool for the audio: mp4creator. With the -aac-profile=4 option:
$ mp4creator -aac-profile=4 audio.aac mp4creator-audio.mp4 Warning - you have changed the AAC profile level. ⁞ This is not recommended If you have problems with the resultant file, it is your own fault Do not contact project creators
Despite the warning, this worked after re-muxing with mp4box:
$ MP4Box -add video.h264#video -add mp4creator-audio.mp4#audio mp4box.mp4
$ mp4info mp4box-2.mp4 mp4info version 1.6 mp4box-2.mp4: Track ⁞⁞⁞ Type Info 1 video H264 High@4.1, 36.000 secs, 7717 kbps, 1280x688 @ 25.000000 fps 2 audio MPEG-4 AAC LC, 36.032 secs, 150 kbps, 48000 Hz
Examining the difference, it seems that both ffmpeg and MP4Box were making an MPEG-2 AAC track, and Quicktime wanted an MPEG-4 track instead.
posted by Milivoj at Saturday, February 27, 2010
4 comments
