#3145: Header inconsistencies for a certain range of video bit rate -------------------------------------+------------------------------------- Reporter: olitoli | Type: defect Status: new | Priority: normal Component: FFmpeg | Version: 2.1 Keywords: xvid avi | Blocked By: video bitrate | Reproduced by developer: 0 Blocking: | Analyzed by developer: 0 | -------------------------------------+------------------------------------- Hi, I am trying to transcode from any format (.mkv, .avi, .m4v, etc) to this format: XVID avi. I am seeing a problem that I did not see reported before (I googled a lot but did not find anything that closely match my problem). I have been using the Mac OS X Tessus standalone builds 1.2.1 and 2.1.0 and both have the same problem. The input file and format does not really matter, I tried with various and still see the same problem. The problem: For a certain RANGE of video rate, the output file has (apparently) some header inconsistencies (wrong lengths/sizes for the audio and/or video streams). The symptoms: On my Philips DVD Player DVP 3680, when I play the file, I first see the 0%-100% loading message twice (it should be seen only once), then if I play the file, it stops playing after a certain mark (roughly 1GB). Also, if I try to fast forward, I can go until the end, but if I try to play after that certain mark, the file won't play. Additionally, if I use the GUI version of MediaInfo Mac 0.7.36.0, I can see the inconsistencies mentioned above. If I use the CLI mediainfo 0.7.64, I do not see those inconsistencies. If I use ffmpeg -v 9 -loglevel 99 -i, I do not see any inconsistencies either. Furthermore, ALL files play correctly in VLC. The Tests: First, I thought that this problem was the infamous 1GB avi limit issue but it is not so as my tests below reveal. For any 1 hour 40 minutes 720x400 movie (I tried with both an XVID .avi and a x264 .m4v, like mentioned before, the source does not matter): ffmpeg -i DIT.avi -c:v mpeg4 -vtag XVID -b:v 1300k -r 23.976 -c:a ac3 -b:a 128k -ar 48000 -ac 2 D_1300.avi ffmpeg -i DIT.avi -c:v mpeg4 -vtag XVID -b:v 1350k -r 23.976 -c:a ac3 -b:a 128k -ar 48000 -ac 2 D_1350.avi ffmpeg -i DIT.avi -c:v mpeg4 -vtag XVID -b:v 1900k -r 23.976 -c:a ac3 -b:a 128k -ar 48000 -ac 2 D_1900.avi ffmpeg -i DIT.avi -c:v mpeg4 -vtag XVID -b:v 2000k -r 23.976 -c:a ac3 -b:a 128k -ar 48000 -ac 2 D_2000.avi The files encoded at 1300k (or below) are fine. The files encoded from 1350k to 1900k are incorrect. The files encoded at 2000k (and above, ie. 2100k) are fine. D_1300.avi is 1.00GB with a 927MB video stream and a 92MB audio stream. D_2000.avi is 1.49GB with a 1.39GB video stream and a 92MB audio stream. For any 2 hours 11 minutes 720x304 movie (I tried with 2 different x264 .m4v): ffmpeg -i PR.m4v -c:v mpeg4 -vtag XVID -b:v 900k -r 23.976 -c:a ac3 -b:a 128k -ar 48000 -ac 2 P_900.avi ffmpeg -i PR.m4v -c:v mpeg4 -vtag XVID -b:v 1000k -r 23.976 -c:a ac3 -b:a 128k -ar 48000 -ac 2 P_1000.avi ffmpeg -i PR.m4v -c:v mpeg4 -vtag XVID -b:v 1900k -r 23.976 -c:a ac3 -b:a 128k -ar 48000 -ac 2 P_1900.avi ffmpeg -i PR.m4v -c:v mpeg4 -vtag XVID -b:v 2000k -r 23.976 -c:a ac3 -b:a 128k -ar 48000 -ac 2 P_2000.avi The files encoded at 900k (or below) are fine. The files encoded from 1000k to 1900k are incorrect. The files encoded at 2000k (and above, ie. 2100k) are fine. Fine means that file will play on the DVD Player and the GUI MediaInfo reports correct values for the Streams Lengths and Sizes. Incorrect means that the file will not play beyond a certain mark and the GUI MediaInfo reports incorrect values for the Streams Lengths and/or Sizes. P_900.avi is 975MB with a 844MB video stream and a 120MB audio stream. P_2000.avi is 1.96GB with a 1.83GB video stream and a 120MB audio stream. You will see below the info generated by ffmpeg -v 9 -loglevel 99 -i for P_1900.avi and P_2000.avi, as well as the info generated by mediainfo CLI for the same files. Except for the names and bitrates, there are no differences between those files. However, when I inspect P_2000.avi with the GUI MediaInfo, it shows the same values for Video and Audio Stream Size than its CLI counterpart, but when I inspect P_1900.avi with the GUI MediaInfo, it presents a wrong Audio Stream Size (58MB instead of 120) and a wrong Audio Stream Length (1h 3mn instead of 2h 11mn). When I inspect P_1000.avi with the GUI MediaInfo, it presents a wrong Video Stream Size (74MB instead of 938) and Audio Stream Size (4MB instead of 120) but both Stream Lengths are presented correctly (2h 11mn). My theory (but I'm not certain...): This leads me to think that there might be a file header issue. Each Stream has its own header and that header is correct and is the one that is being dumped by ffmpeg or mediainfo, but there might be a general file header that should contain redundant information and this header is incorrect and is the one being dumped by the MediaInfo GUI, and used (unfortunately) by my DVD Player... Additional notes: Using libmp3lame instead of ac3 makes thing worse, both D_MP3_1700.avi and D_MP3_2000.avi are incorrect. I hope that this is detailed enough for you to figure out what is happening. Regards, Toshiro ------------ P_1900.avi ffmpeg info ------------------------ ffmpeg version 1.2.1-tessus Copyright (c) 2000-2013 the FFmpeg developers built on May 9 2013 21:58:14 with llvm-gcc 4.2.1 (LLVM build 2336.1.00) configuration: --prefix=/Users/tessus/data/ext/ffmpeg/sw --as=yasm --extra-version=tessus --disable-shared --enable-static --disable-ffplay --enable-gpl --enable-pthreads --enable-postproc --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-libspeex --enable-bzlib --enable-zlib --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libxavs --enable-version3 --enable- libvo-aacenc --enable-libvo-amrwbenc --enable-libvpx --enable-libgsm --enable-libopus --enable-fontconfig --enable-libfreetype --enable-libass --enable-filters --enable-runtime-cpudetect libavutil 52. 18.100 / 52. 18.100 libavcodec 54. 92.100 / 54. 92.100 libavformat 54. 63.104 / 54. 63.104 libavdevice 54. 3.103 / 54. 3.103 libavfilter 3. 42.103 / 3. 42.103 libswscale 2. 2.100 / 2. 2.100 libswresample 0. 17.102 / 0. 17.102 libpostproc 52. 2.100 / 52. 2.100 Splitting the commandline. Reading option '-v' ... matched as option 'v' (set libav* logging level) with argument '9'. Reading option '-loglevel' ... matched as option 'loglevel' (set libav* logging level) with argument '99'. Reading option '-i' ... matched as input file with argument '/Users/tlees/Movies/More Tests 11:11/P_1900.avi'. Finished splitting the commandline. Parsing a group of options: global . Applying option v (set libav* logging level) with argument 9. Successfully parsed a group of options. Parsing a group of options: input file /Users/tlees/Movies/More Tests 11:11/P_1900.avi. Successfully parsed a group of options. Opening an input file: /Users/tlees/Movies/More Tests 11:11/P_1900.avi. [avi @ 0x10200f000] Format avi probed with size=2048 and score=100 [avi @ 0x101b00d20] use odml:1 [avi @ 0x10200f000] File position before avformat_find_stream_info() is 9900 [avi @ 0x10200f000] All info found rfps: 23.750000 0.011839 Last message repeated 1 times rfps: 23.833333 0.004718 Last message repeated 1 times rfps: 23.916667 0.000816 Last message repeated 1 times rfps: 24.000000 0.000134 Last message repeated 1 times rfps: 24.083333 0.002670 Last message repeated 1 times rfps: 24.166667 0.008427 Last message repeated 1 times rfps: 24.250000 0.017403 Last message repeated 1 times rfps: 47.666667 0.018872 Last message repeated 1 times rfps: 47.750000 0.009458 Last message repeated 1 times rfps: 47.833333 0.003264 Last message repeated 1 times rfps: 47.916667 0.000289 Last message repeated 1 times rfps: 48.000000 0.000534 Last message repeated 1 times rfps: 48.083333 0.003998 Last message repeated 1 times rfps: 48.166667 0.010682 Last message repeated 1 times rfps: 23.976024 0.000000 Last message repeated 1 times rfps: 47.952048 0.000000 Last message repeated 1 times [avi @ 0x10200f000] File position after avformat_find_stream_info() is 58351 Input #0, avi, from '/Users/tlees/Movies/More Tests 11:11/P_1900.avi': Metadata: encoder : Lavf54.63.104 Duration: 02:11:17.46, start: 0.000000, bitrate: 2036 kb/s Stream #0:0, 41, 125/2997: Video: mpeg4 (Simple Profile) (XVID / 0x44495658), yuv420p, 720x404 [SAR 1:1 DAR 180:101], 1/2997, 23.98 fps, 23.98 tbr, 23.98 tbn, 2997 tbc Stream #0:1, 53, 4/125: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, fltp, 128 kb/s Successfully opened the file. At least one output file must be specified [AVIOContext @ 0x101b00c40] Statistics: 3730528 bytes read, 8 seeks ------------ P_2000.avi ffmpeg info ------------------------ ffmpeg version 1.2.1-tessus Copyright (c) 2000-2013 the FFmpeg developers built on May 9 2013 21:58:14 with llvm-gcc 4.2.1 (LLVM build 2336.1.00) configuration: --prefix=/Users/tessus/data/ext/ffmpeg/sw --as=yasm --extra-version=tessus --disable-shared --enable-static --disable-ffplay --enable-gpl --enable-pthreads --enable-postproc --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-libspeex --enable-bzlib --enable-zlib --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libxavs --enable-version3 --enable- libvo-aacenc --enable-libvo-amrwbenc --enable-libvpx --enable-libgsm --enable-libopus --enable-fontconfig --enable-libfreetype --enable-libass --enable-filters --enable-runtime-cpudetect libavutil 52. 18.100 / 52. 18.100 libavcodec 54. 92.100 / 54. 92.100 libavformat 54. 63.104 / 54. 63.104 libavdevice 54. 3.103 / 54. 3.103 libavfilter 3. 42.103 / 3. 42.103 libswscale 2. 2.100 / 2. 2.100 libswresample 0. 17.102 / 0. 17.102 libpostproc 52. 2.100 / 52. 2.100 Splitting the commandline. Reading option '-v' ... matched as option 'v' (set libav* logging level) with argument '9'. Reading option '-loglevel' ... matched as option 'loglevel' (set libav* logging level) with argument '99'. Reading option '-i' ... matched as input file with argument '/Users/tlees/Movies/More Tests 11:11/P_2000.avi'. Finished splitting the commandline. Parsing a group of options: global . Applying option v (set libav* logging level) with argument 9. Successfully parsed a group of options. Parsing a group of options: input file /Users/tlees/Movies/More Tests 11:11/P_2000.avi. Successfully parsed a group of options. Opening an input file: /Users/tlees/Movies/More Tests 11:11/P_2000.avi. [avi @ 0x10200f000] Format avi probed with size=2048 and score=100 [avi @ 0x101b00d20] use odml:1 [avi @ 0x10200f000] File position before avformat_find_stream_info() is 9900 [avi @ 0x10200f000] All info found rfps: 23.750000 0.011839 Last message repeated 1 times rfps: 23.833333 0.004718 Last message repeated 1 times rfps: 23.916667 0.000816 Last message repeated 1 times rfps: 24.000000 0.000134 Last message repeated 1 times rfps: 24.083333 0.002670 Last message repeated 1 times rfps: 24.166667 0.008427 Last message repeated 1 times rfps: 24.250000 0.017403 Last message repeated 1 times rfps: 47.666667 0.018872 Last message repeated 1 times rfps: 47.750000 0.009458 Last message repeated 1 times rfps: 47.833333 0.003264 Last message repeated 1 times rfps: 47.916667 0.000289 Last message repeated 1 times rfps: 48.000000 0.000534 Last message repeated 1 times rfps: 48.083333 0.003998 Last message repeated 1 times rfps: 48.166667 0.010682 Last message repeated 1 times rfps: 23.976024 0.000000 Last message repeated 1 times rfps: 47.952048 0.000000 Last message repeated 1 times [avi @ 0x10200f000] File position after avformat_find_stream_info() is 58351 Input #0, avi, from '/Users/tlees/Movies/More Tests 11:11/P_2000.avi': Metadata: encoder : Lavf54.63.104 Duration: 02:11:17.46, start: 0.000000, bitrate: 2135 kb/s Stream #0:0, 41, 125/2997: Video: mpeg4 (Simple Profile) (XVID / 0x44495658), yuv420p, 720x404 [SAR 1:1 DAR 180:101], 1/2997, 23.98 fps, 23.98 tbr, 23.98 tbn, 2997 tbc Stream #0:1, 53, 4/125: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, fltp, 128 kb/s Successfully opened the file. At least one output file must be specified [AVIOContext @ 0x101b00c40] Statistics: 3714504 bytes read, 8 seeks ------------ P_1900.avi media info ------------------------ General Complete name : /Users/tlees/Movies/More Tests 11:11/P_1900.avi Format : AVI Format/Info : Audio Video Interleave Format profile : OpenDML File size : 1.87 GiB Duration : 2h 11mn Overall bit rate : 2 036 Kbps Writing application : Lavf54.63.104 Video ID : 0 Format : MPEG-4 Visual Format profile : Simple@L1 Format settings, BVOP : No Format settings, QPel : No Format settings, GMC : No warppoints Format settings, Matrix : Default (H.263) Codec ID : XVID Codec ID/Hint : XviD Duration : 2h 11mn Bit rate : 1 897 Kbps Width : 720 pixels Height : 404 pixels Display aspect ratio : 16:9 Frame rate : 23.976 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Compression mode : Lossy Bits/(Pixel*Frame) : 0.272 Stream size : 1.74 GiB (93%) Writing library : Lavc54.92.100 Audio ID : 1 Format : AC-3 Format/Info : Audio Coding 3 Mode extension : CM (complete main) Format settings, Endianness : Big Codec ID : 2000 Duration : 2h 11mn Bit rate mode : Constant Bit rate : 128 Kbps Channel count : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz Bit depth : 16 bits Compression mode : Lossy Stream size : 120 MiB (6%) Alignment : Aligned on interleaves Interleave, duration : 32 ms (0.77 video frame) ------------ P_2000.avi media info ------------------------ General Complete name : /Users/tlees/Movies/More Tests 11:11/P_2000.avi Format : AVI Format/Info : Audio Video Interleave Format profile : OpenDML File size : 1.96 GiB Duration : 2h 11mn Overall bit rate : 2 136 Kbps Writing application : Lavf54.63.104 Video ID : 0 Format : MPEG-4 Visual Format profile : Simple@L1 Format settings, BVOP : No Format settings, QPel : No Format settings, GMC : No warppoints Format settings, Matrix : Default (H.263) Codec ID : XVID Codec ID/Hint : XviD Duration : 2h 11mn Bit rate : 1 997 Kbps Width : 720 pixels Height : 404 pixels Display aspect ratio : 16:9 Frame rate : 23.976 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Compression mode : Lossy Bits/(Pixel*Frame) : 0.286 Stream size : 1.83 GiB (94%) Writing library : Lavc54.92.100 Audio ID : 1 Format : AC-3 Format/Info : Audio Coding 3 Mode extension : CM (complete main) Format settings, Endianness : Big Codec ID : 2000 Duration : 2h 11mn Bit rate mode : Constant Bit rate : 128 Kbps Channel count : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz Bit depth : 16 bits Compression mode : Lossy Stream size : 120 MiB (6%) Alignment : Aligned on interleaves Interleave, duration : 32 ms (0.77 video frame) -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/3145> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker