ReadyDLNA/MiniDLNA/UPNPAV/ReadyMedia Problems

MP4s (like most container formats) can hold a variety of compressed bitstream formats, and sometimes the details on that matters. Perhaps try a mediainfo analysis? The tool can be found here: http://www.videohelp.com/tools/MediaInfo Select the text view, and cut/paste the data into a reply (hand-editing the file name if you wish).

Also, if the file name has unusual characters, you could try a test where you simplify the name, and see if that helps.

Thank you, StephenB, but I doubt that is it. All the files, both the thousands that work and the dozens that don't, are h264 video (generated by x264), AAC audio, and usually mp4s subtitles. There are no non-ASCII characters in the file names.

Below are two example mediainfo outputs of the backup of two movies for which I made backups from my DVDs/Blu-rays. Both generate consistently generate the above error in readydlna.

General Complete name : Y:\Movies\Thriller\Constantine (2005) HD.mp4 Format : MPEG-4 Format profile : Base Media Codec ID : isom File size : 3.01 GiB Duration : 2h 0mn Overall bit rate mode : Variable Overall bit rate : 3 567 Kbps Movie name : Constantine Genre : Thriller ContentType : Short Film Description : In a world ruled largely by logic, an eccentric private detective with a taste for the supernatural investigates an apparent suicide in this thriller based on the comic book "Hellblazer." Cast: Keanu Reeves, Rachel Weisz, Shia LaBeouf, Djimon Hounsou, Ma Recorded date : 2005 Encoded date : UTC 2014-04-09 13:18:21 Tagged date : UTC 2014-04-09 13:20:14 Writing application : MakeMP4 3.7 on Wednesday, April 09, 2014, at 09:19:02 Cover : Yes Comment : Rating: R;Genres: Action & Adventure, Comic Books and Superheroes, Supernatural Thrillers, Action Thrillers, Blu-ray;This movie is: Dark;Format: DVD and Blu-ray LongDescription : In a world ruled largely by logic, an eccentric private detective with a taste for the supernatural investigates an apparent suicide in this thriller based on the comic book "Hellblazer." Cast: Keanu Reeves, Rachel Weisz, Shia LaBeouf, Djimon Hounsou, Max Baker, Pruitt Taylor Vince, Gavin Rossdale, Tilda Swinton, Peter Stormare. Director: Francis Lawrence. HDVideo : Yes Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4.0 Format settings, CABAC : Yes Format settings, ReFrames : 5 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 2h 0mn Bit rate : 2 719 Kbps Maximum bit rate : 21.6 Mbps Width : 1 920 pixels Height : 792 pixels Display aspect ratio : 2.40:1 Frame rate mode : Constant Frame rate : 23.976 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.075 Stream size : 2.29 GiB (76%) Title : Constantine () HD T01.out.264:lang=eng:fps=23.976023976023978 - Imported with GPAC 0.5.0-rev4065 Writing library : x264 core 142 r2409 d6b4e63 Encoding settings : cabac=1 / ref=5 / deblock=1:-1:-1 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.15 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-3 / threads=18 / lookahead_threads=3 / sliced_threads=0 / nr=0 / decimate=0 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=8 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=crf / mbtree=1 / crf=19.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00 Language : English Encoded date : UTC 2014-04-09 13:18:21 Tagged date : UTC 2014-04-09 13:18:47 Audio #1 ID : 2 Format : AAC Format/Info : Advanced Audio Codec Format profile : LC Codec ID : 40 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 327 Kbps Maximum bit rate : 414 Kbps Channel(s) : 2 channels Channel(s)_Original : 6 channels Channel positions : Front: L C R, Side: L R, LFE Sampling rate : 48.0 KHz Compression mode : Lossy Stream size : 283 MiB (9%) Language : English Encoded date : UTC 2014-04-09 13:18:38 Tagged date : UTC 2014-04-09 13:18:47 Audio #2 ID : 3 Format : AAC Format/Info : Advanced Audio Codec Format profile : LC Codec ID : 40 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 96.0 Kbps Maximum bit rate : 137 Kbps Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz Compression mode : Lossy Stream size : 81.5 MiB (3%) Language : English Encoded date : UTC 2014-04-09 13:18:41 Tagged date : UTC 2014-04-09 13:18:47 Audio #3 ID : 4 Format : AAC Format/Info : Advanced Audio Codec Format profile : LC Codec ID : 40 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 93.9 Kbps Maximum bit rate : 144 Kbps Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz Compression mode : Lossy Stream size : 81.2 MiB (3%) Language : English Encoded date : UTC 2014-04-09 13:18:43 Tagged date : UTC 2014-04-09 13:18:47 Audio #4 ID : 5 Format : AAC Format/Info : Advanced Audio Codec Format profile : LC Codec ID : 40 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 87.6 Kbps Maximum bit rate : 98.8 Kbps Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz Compression mode : Lossy Stream size : 75.7 MiB (2%) Language : English Encoded date : UTC 2014-04-09 13:18:44 Tagged date : UTC 2014-04-09 13:18:47 Text #1 ID : 6 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 6 066 bps Maximum bit rate : 94.2 Kbps Stream size : 5.24 MiB (0%) Title : Constantine () HD T07.idx:lang=eng - Imported with GPAC 0.5.0-rev4065 Language : English Encoded date : UTC 2014-04-09 13:18:46 Tagged date : UTC 2014-04-09 13:18:47 Text #2 ID : 7 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 11.6 Kbps Maximum bit rate : 111 Kbps Stream size : 10.0 MiB (0%) Title : Constantine () HD T08.idx:lang=eng - Imported with GPAC 0.5.0-rev4065 Language : English Encoded date : UTC 2014-04-09 13:18:46 Tagged date : UTC 2014-04-09 13:18:47 Text #3 ID : 8 Format : mp4s Codec ID : E0 Duration : 1h 59mn Bit rate mode : Variable Bit rate : 5 066 bps Maximum bit rate : 4 209 Mbps Stream size : 4.34 MiB (0%) Title : Constantine () HD T09.idx:lang=jpn - Imported with GPAC 0.5.0-rev4065 Language : Japanese Encoded date : UTC 2014-04-09 13:18:46 Tagged date : UTC 2014-04-09 13:18:47 Text #4 ID : 9 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 4 791 bps Maximum bit rate : 90.5 Kbps Stream size : 4.14 MiB (0%) Title : Constantine () HD T10.idx:lang=fra - Imported with GPAC 0.5.0-rev4065 Language : French Encoded date : UTC 2014-04-09 13:18:46 Tagged date : UTC 2014-04-09 13:18:47 Text #5 ID : 10 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 7 261 bps Maximum bit rate : 107 Kbps Stream size : 6.27 MiB (0%) Title : Constantine () HD T11.idx:lang=deu - Imported with GPAC 0.5.0-rev4065 Language : German Encoded date : UTC 2014-04-09 13:18:46 Tagged date : UTC 2014-04-09 13:18:47 Text #6 ID : 11 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 6 060 bps Maximum bit rate : 91.0 Kbps Stream size : 5.23 MiB (0%) Title : Constantine () HD T12.idx:lang=ita - Imported with GPAC 0.5.0-rev4065 Language : Italian Encoded date : UTC 2014-04-09 13:18:46 Tagged date : UTC 2014-04-09 13:18:47 Text #7 ID : 12 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 4 878 bps Maximum bit rate : 106 Kbps Stream size : 4.21 MiB (0%) Title : Constantine () HD T13.idx:lang=spa - Imported with GPAC 0.5.0-rev4065 Language : Spanish Encoded date : UTC 2014-04-09 13:18:46 Tagged date : UTC 2014-04-09 13:18:47 Text #8 ID : 13 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 4 979 bps Maximum bit rate : 95.2 Kbps Stream size : 4.30 MiB (0%) Title : Constantine () HD T14.idx:lang=nld - Imported with GPAC 0.5.0-rev4065 Language : Dutch Encoded date : UTC 2014-04-09 13:18:46 Tagged date : UTC 2014-04-09 13:18:47 Text #9 ID : 14 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 5 411 bps Maximum bit rate : 101 Kbps Stream size : 4.67 MiB (0%) Title : Constantine () HD T15.idx:lang=spa - Imported with GPAC 0.5.0-rev4065 Language : Spanish Encoded date : UTC 2014-04-09 13:18:46 Tagged date : UTC 2014-04-09 13:18:47 Text #10 ID : 15 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 5 150 bps Maximum bit rate : 102 Kbps Stream size : 4.45 MiB (0%) Title : Constantine () HD T16.idx:lang=dan - Imported with GPAC 0.5.0-rev4065 Language : Danish Encoded date : UTC 2014-04-09 13:18:46 Tagged date : UTC 2014-04-09 13:18:47 Text #11 ID : 16 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 4 854 bps Maximum bit rate : 90.4 Kbps Stream size : 4.19 MiB (0%) Title : Constantine () HD T17.idx:lang=fin - Imported with GPAC 0.5.0-rev4065 Language : Finnish Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #12 ID : 17 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 5 240 bps Maximum bit rate : 94.3 Kbps Stream size : 4.53 MiB (0%) Title : Constantine () HD T18.idx:lang=nor - Imported with GPAC 0.5.0-rev4065 Language : Norwegian Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #13 ID : 18 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 5 338 bps Maximum bit rate : 98.9 Kbps Stream size : 4.61 MiB (0%) Title : Constantine () HD T19.idx:lang=por - Imported with GPAC 0.5.0-rev4065 Language : Portuguese Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #14 ID : 19 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 4 670 bps Maximum bit rate : 95.1 Kbps Stream size : 4.03 MiB (0%) Title : Constantine () HD T20.idx:lang=swe - Imported with GPAC 0.5.0-rev4065 Language : Swedish Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #15 ID : 20 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 71 bps Maximum bit rate : 81.3 Kbps Stream size : 62.5 KiB (0%) Title : Constantine () HD T21.idx:lang=fra - Imported with GPAC 0.5.0-rev4065 Language : French Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #16 ID : 21 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 93 bps Maximum bit rate : 105 Kbps Stream size : 82.1 KiB (0%) Title : Constantine () HD T22.idx:lang=deu - Imported with GPAC 0.5.0-rev4065 Language : German Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #17 ID : 22 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 91 bps Maximum bit rate : 94.8 Kbps Stream size : 80.2 KiB (0%) Title : Constantine () HD T23.idx:lang=ita - Imported with GPAC 0.5.0-rev4065 Language : Italian Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #18 ID : 23 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 103 bps Maximum bit rate : 106 Kbps Stream size : 90.3 KiB (0%) Title : Constantine () HD T24.idx:lang=spa - Imported with GPAC 0.5.0-rev4065 Language : Spanish Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #19 ID : 24 Format : mp4s Codec ID : E0 Duration : 1h 59mn Bit rate mode : Variable Bit rate : 11.7 Kbps Maximum bit rate : 4 209 Mbps Stream size : 10.1 MiB (0%) Title : Constantine () HD T25.idx:lang=jpn - Imported with GPAC 0.5.0-rev4065 Language : Japanese Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #20 ID : 25 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 11.1 Kbps Maximum bit rate : 4 207 Mbps Stream size : 9.57 MiB (0%) Title : Constantine () HD T26.idx:lang=jpn - Imported with GPAC 0.5.0-rev4065 Language : Japanese Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #21 ID : 26 Format : mp4s Codec ID : E0 Duration : 1h 59mn Bit rate mode : Variable Bit rate : 3 440 bps Maximum bit rate : 4 210 Mbps Stream size : 2.94 MiB (0%) Title : Constantine () HD T27.idx:lang=jpn - Imported with GPAC 0.5.0-rev4065 Language : Japanese Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #22 ID : 27 Format : mp4s Codec ID : E0 Duration : 1h 53mn Bit rate mode : Variable Bit rate : 27.2 Kbps Maximum bit rate : 4 250 Mbps Stream size : 22.2 MiB (1%) Title : Constantine () HD T28.idx:lang=jpn - Imported with GPAC 0.5.0-rev4065 Language : Japanese Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #23 ID : 28 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 9 384 bps Maximum bit rate : 115 Kbps Stream size : 8.10 MiB (0%) Title : Constantine () HD T29.idx:lang=fra - Imported with GPAC 0.5.0-rev4065 Language : French Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #24 ID : 29 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 11.2 Kbps Maximum bit rate : 108 Kbps Stream size : 9.71 MiB (0%) Title : Constantine () HD T30.idx:lang=deu - Imported with GPAC 0.5.0-rev4065 Language : German Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #25 ID : 30 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 10.9 Kbps Maximum bit rate : 105 Kbps Stream size : 9.45 MiB (0%) Title : Constantine () HD T31.idx:lang=ita - Imported with GPAC 0.5.0-rev4065 Language : Italian Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #26 ID : 31 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 9 739 bps Maximum bit rate : 106 Kbps Stream size : 8.41 MiB (0%) Title : Constantine () HD T32.idx:lang=spa - Imported with GPAC 0.5.0-rev4065 Language : Spanish Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #27 ID : 32 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 10.4 Kbps Maximum bit rate : 106 Kbps Stream size : 9.00 MiB (0%) Title : Constantine () HD T33.idx:lang=nld - Imported with GPAC 0.5.0-rev4065 Language : Dutch Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #28 ID : 33 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 9 246 bps Maximum bit rate : 108 Kbps Stream size : 7.99 MiB (0%) Title : Constantine () HD T34.idx:lang=dan - Imported with GPAC 0.5.0-rev4065 Language : Danish Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #29 ID : 34 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 8 915 bps Maximum bit rate : 106 Kbps Stream size : 7.70 MiB (0%) Title : Constantine () HD T35.idx:lang=fin - Imported with GPAC 0.5.0-rev4065 Language : Finnish Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #30 ID : 35 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 9 840 bps Maximum bit rate : 104 Kbps Stream size : 8.50 MiB (0%) Title : Constantine () HD T36.idx:lang=nor - Imported with GPAC 0.5.0-rev4065 Language : Norwegian Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #31 ID : 36 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 10.7 Kbps Maximum bit rate : 101 Kbps Stream size : 9.26 MiB (0%) Title : Constantine () HD T37.idx:lang=por - Imported with GPAC 0.5.0-rev4065 Language : Portuguese Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47 Text #32 ID : 37 Format : mp4s Codec ID : E0 Duration : 2h 0mn Bit rate mode : Variable Bit rate : 9 192 bps Maximum bit rate : 93.2 Kbps Stream size : 7.94 MiB (0%) Title : Constantine () HD T38.idx:lang=swe - Imported with GPAC 0.5.0-rev4065 Language : Swedish Encoded date : UTC 2014-04-09 13:18:47 Tagged date : UTC 2014-04-09 13:18:47

General Complete name : Y:\Movies\Adventure\Gladiator (2000).mp4 Format : MPEG-4 Format profile : Base Media Codec ID : isom File size : 1.09 GiB Duration : 2h 50mn Overall bit rate mode : Variable Overall bit rate : 909 Kbps Movie name : Gladiator Genre : Adventure ContentType : Short Film Description : Fans of Gladiator's original theatrical release will appreciate this extended version of the epic Ridley Scott film, packed with extra action footage and gripping dialogue. Featuring a strong supporting cast and an Oscar-winning performance from actor Rus Recorded date : 2000 Encoded date : UTC 2010-05-21 07:34:40 Tagged date : UTC 2011-11-15 18:36:08 Cover : Yes / Yes LongDescription : Fans of Gladiator's original theatrical release will appreciate this extended version of the epic Ridley Scott film, packed with extra action footage and gripping dialogue. Featuring a strong supporting cast and an Oscar-winning performance from actor Russell Crowe as the dauntless Roman general Maximus, this big-budget Best Picture winner became an instant classic -- and helped elevate its leading man to icon status. Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L3.1 Format settings, CABAC : Yes Format settings, ReFrames : 16 frames Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 2h 50mn Bit rate : 702 Kbps Maximum bit rate : 3 941 Kbps Width : 716 pixels Height : 368 pixels Display aspect ratio : 2.35:1 Original display aspect ratio : 2.35:1 Frame rate mode : Constant Frame rate : 23.976 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.111 Stream size : 858 MiB (77%) Writing library : x264 core 95 r1592 95aacc4 Encoding settings : cabac=1 / ref=16 / deblock=1:-1:-1 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.15 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-3 / threads=6 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / constrained_intra=0 / bframes=8 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / weightp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=crf / mbtree=1 / crf=19.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00 Encoded date : UTC 2010-05-21 07:34:40 Tagged date : UTC 2010-05-21 07:36:24 Audio #1 ID : 2 Format : AAC Format/Info : Advanced Audio Codec Format profile : LC Codec ID : 40 Duration : 2h 50mn Bit rate mode : Variable Bit rate : 92.3 Kbps Maximum bit rate : 122 Kbps Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz Compression mode : Lossy Stream size : 113 MiB (10%) Title : English Language : English Encoded date : UTC 2010-05-21 07:35:54 Tagged date : UTC 2010-09-21 08:19:10 Audio #2 ID : 3 Format : AAC Format/Info : Advanced Audio Codec Format profile : HE-AAC / LC Codec ID : 40 Duration : 2h 50mn Bit rate mode : Variable Bit rate : 60.9 Kbps Maximum bit rate : 80.9 Kbps Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz / 24.0 KHz Compression mode : Lossy Stream size : 74.5 MiB (7%) Title : English - Director's Commentary Language : English Encoded date : UTC 2010-05-21 07:36:03 Tagged date : UTC 2010-05-21 07:36:24 Text #1 ID : 4 Format : mp4s Codec ID : E0 Duration : 2h 50mn Bit rate mode : Variable Bit rate : 1 709 bps Maximum bit rate : 4 240 Mbps Stream size : 2.09 MiB (0%) Language : English Encoded date : UTC 2010-05-21 07:36:06 Tagged date : UTC 2010-05-21 07:36:24 Text #2 ID : 5 Format : mp4s Codec ID : E0 Duration : 2h 50mn Bit rate mode : Variable Bit rate : 1 709 bps Maximum bit rate : 4 240 Mbps Stream size : 2.09 MiB (0%) Language : English Encoded date : UTC 2010-05-21 07:36:13 Tagged date : UTC 2010-05-21 07:36:24 Text #3 ID : 6 Format : mp4s Codec ID : E0 Duration : 2h 50mn Bit rate mode : Variable Bit rate : 1 748 bps Maximum bit rate : 4 240 Mbps Stream size : 2.14 MiB (0%) Language : French Encoded date : UTC 2010-05-21 07:36:13 Tagged date : UTC 2010-05-21 07:36:24 Text #4 ID : 7 Format : mp4s Codec ID : E0 Duration : 2h 50mn Bit rate mode : Variable Bit rate : 1 749 bps Maximum bit rate : 4 240 Mbps Stream size : 2.14 MiB (0%) Language : French Encoded date : UTC 2010-05-21 07:36:17 Tagged date : UTC 2010-05-21 07:36:24 Text #5 ID : 8 Format : mp4s Codec ID : E0 Duration : 2h 50mn Bit rate mode : Variable Bit rate : 1 693 bps Maximum bit rate : 4 240 Mbps Stream size : 2.07 MiB (0%) Language : Spanish Encoded date : UTC 2010-05-21 07:36:17 Tagged date : UTC 2010-05-21 07:36:24 Text #6 ID : 9 Format : mp4s Codec ID : E0 Duration : 2h 50mn Bit rate mode : Variable Bit rate : 1 693 bps Maximum bit rate : 4 240 Mbps Stream size : 2.07 MiB (0%) Language : Spanish Encoded date : UTC 2010-05-21 07:36:19 Tagged date : UTC 2010-05-21 07:36:24 Text #7 ID : 10 Format : mp4s Codec ID : E0 Duration : 2h 50mn Bit rate mode : Variable Bit rate : 2 451 bps Maximum bit rate : 4 261 Mbps Stream size : 2.99 MiB (0%) Language : English Encoded date : UTC 2010-05-21 07:36:19 Tagged date : UTC 2010-05-21 07:36:24 Text #8 ID : 11 Format : mp4s Codec ID : E0 Duration : 2h 50mn Bit rate mode : Variable Bit rate : 2 451 bps Maximum bit rate : 4 261 Mbps Stream size : 2.99 MiB (0%) Language : English Encoded date : UTC 2010-05-21 07:36:22 Tagged date : UTC 2010-05-21 07:36:24 Text #9 ID : 12 Format : mp4s Codec ID : E0 Duration : 2h 50mn Bit rate mode : Variable Bit rate : 30 bps Maximum bit rate : 4 001 Mbps Stream size : 37.2 KiB (0%) Language : French Encoded date : UTC 2010-05-21 07:36:22 Tagged date : UTC 2010-05-21 07:36:24 Text #10 ID : 13 Format : mp4s Codec ID : E0 Duration : 2h 50mn Bit rate mode : Variable Bit rate : 30 bps Maximum bit rate : 4 001 Mbps Stream size : 37.2 KiB (0%) Language : French Encoded date : UTC 2010-05-21 07:36:22 Tagged date : UTC 2010-05-21 07:36:24 Text #11 ID : 14 Format : mp4s Codec ID : E0 Duration : 2h 50mn Bit rate mode : Variable Bit rate : 5 190 bps Maximum bit rate : 4 267 Mbps Stream size : 6.34 MiB (1%) Language : English Encoded date : UTC 2010-05-21 07:36:22 Tagged date : UTC 2010-05-21 07:36:24 Text #12 ID : 15 Format : mp4s Codec ID : E0 Duration : 2h 50mn Bit rate mode : Variable Bit rate : 5 190 bps Maximum bit rate : 4 267 Mbps Stream size : 6.34 MiB (1%) Language : English Encoded date : UTC 2010-05-21 07:36:23 Tagged date : UTC 2010-05-21 07:36:24 Text #13 ID : 16 Format : mp4s Codec ID : E0 Duration : 2h 50mn Bit rate mode : Variable Bit rate : 4 279 bps Maximum bit rate : 4 267 Mbps Stream size : 5.23 MiB (0%) Language : French Encoded date : UTC 2010-05-21 07:36:23 Tagged date : UTC 2010-05-21 07:36:24 Text #14 ID : 17 Format : mp4s Codec ID : E0 Duration : 2h 50mn Bit rate mode : Variable Bit rate : 4 279 bps Maximum bit rate : 4 267 Mbps Stream size : 5.23 MiB (0%) Language : French Encoded date : UTC 2010-05-21 07:36:24 Tagged date : UTC 2010-05-21 07:36:24 Text #15 ID : 18 Format : mp4s Codec ID : E0 Duration : 2h 50mn Bit rate mode : Variable Bit rate : 4 464 bps Maximum bit rate : 4 267 Mbps Stream size : 5.46 MiB (0%) Language : Spanish Encoded date : UTC 2010-05-21 07:36:24 Tagged date : UTC 2010-05-21 07:36:24 Text #16 ID : 19 Format : mp4s Codec ID : E0 Duration : 2h 50mn Bit rate mode : Variable Bit rate : 4 464 bps Maximum bit rate : 4 267 Mbps Stream size : 5.46 MiB (0%) Language : Spanish Encoded date : UTC 2010-05-21 07:36:24 Tagged date : UTC 2010-05-21 07:36:24 Text #17 ID : 20 Format : Timed Text Codec ID : tx3g Duration : 2h 43mn Bit rate mode : Variable Bit rate : 47 bps Stream size : 56.6 KiB (0%) Language : English Encoded date : UTC 2010-05-21 07:36:24 Tagged date : UTC 2010-05-21 07:36:24 Menu #1 00:00:00.000 : Chapter 1 00:07:13.867 : Chapter 2 00:12:50.333 : Chapter 3 00:18:44.667 : Chapter 4 00:23:29.000 : Chapter 5 00:32:57.400 : Chapter 6 00:37:33.633 : Chapter 7 00:40:49.300 : Chapter 8 00:47:30.833 : Chapter 9 00:51:33.800 : Chapter 10 00:55:42.000 : Chapter 11 01:02:18.467 : Chapter 12 01:09:53.733 : Chapter 13 01:19:04.467 : Chapter 14 01:29:17.267 : Chapter 15 01:37:06.933 : Chapter 16 01:41:30.633 : Chapter 17 01:51:53.067 : Chapter 18 01:56:30.233 : Chapter 19 02:00:37.233 : Chapter 20 02:04:35.667 : Chapter 21 02:12:12.067 : Chapter 22 02:13:25.567 : Chapter 23 02:24:07.733 : Chapter 24 02:28:40.733 : Chapter 25 02:34:12.400 : Chapter 26 02:38:34.933 : Chapter 27 02:42:48.900 : Chapter 28 02:50:47.433 : Chapter 29 Menu #2 ID : 21 Codec ID : text Duration : 2h 50mn Encoded date : UTC 2010-05-22 07:39:02 Tagged date : UTC 2010-05-22 07:39:02 Bit rate mode : VBR

CarlEdman wrote:
Thank you, StephenB, but I doubt that is it. All the files, both the thousands that work and the dozens that don't, are h264 video (generated by x264), AAC audio, and usually mp4s subtitles. There are no non-ASCII characters in the file names.

I hear you. However, one of the challenges with DLNA (compared with CIFS or NFS access) is that both the DLNA server and the DLNA player need to understand the details of the media format. The server needs to be able to demux the container and stream, it also needs to understand adapt to what the player says it can play.

This makes interop issues hard to diagnose sometimes.

Anyway, that was why I asked. Your MP4s have a lot more stuff in them than most of mine, but I am not seeing anything crazy in there. Sometimes AC3 audio shows up, and I know that can cause issues with some players, but I'm not sure about ReadyDLNA. The details of the AVC encoding are consistent with the signaled profile/level (which BTW is not always the case).

I am wondering about the isom base media - is that also showing in other files that do play?

As far as practical next steps...
(a) you could try to compare mediainfo data with some similar files that do play, and see if you can discover a signature. That of course is pretty time consuming.
(b) you could try plex (https://plex.tv/downloads), and see if that works
(c) you could try remuxing these two mp4s to MKV, and see if that resolves anything.
(d) maybe PM skywalker, and see if he has any suggestions on ReadyDLNA - including your update idea.

Thanks again, StephenB, you're advice is always much appreciated, in this thread as in many others I only read. I understand that these problems are fairly common, but I'm pretty familiar with media file formats, which is why this thing which has puzzled me for years is so frustrating.

One clarification to my earlier post, is that the video files which in the DLNA clients show up as audio-only appear to be the same ones for which minidlna spits out that error message. That may be a hint, but it hasn't helped me yet.

As for your suggestions:
(a) MediaInfo on all the files doesn't show me any hint of why they don't work.
(b) I'm using Plex on some devices and that--while it has problems of its own--is fine for those devices.
(c) In the past, I've tried remuxing them as mp4s again with mp4box, without success. I could try mkv, but a bunch of my players only do mp4s.
(d) Will do. My hope is that somebody at ReadyNAS who is working on the updated minidlna will have some insight, based on the source filename and line number in the minidlna error message.

Thanks again!

Just a quick update and a solution, in case somebody is looking for it:

I contacted skywalker and he was able to track down the problem to the libavmedia library (from the ffmpeg project) which minidlna uses to examine media files. Turns out that this library, or at least the version that ships with Raidiator 4.2.X, barfs on mp4s with more than 20 streams. He has a patch that ameliorates the issue.

Is this patch available for NV1+ Raidiator 4.1.13?