October 2011 - FFmpeg-trac - lists.ffmpeg.org

#498(undetermined:new): Invalid pixel aspect ratio encoding mpeg4
by FFmpeg 03 Oct '11

03 Oct '11

#498: Invalid pixel aspect ratio encoding mpeg4 -------------------------------------+------------------------------------- Reporter: cehoyos | Owner: Type: defect | Status: new Priority: important | Component: Version: git- | undetermined master | Keywords: regression Blocked By: | Blocking: Reproduced by developer: 1 | Analyzed by developer: 0 -------------------------------------+------------------------------------- Reencoding attached sample fails for some resolutions, this is a regression since c8868f28e357e7e6ffe3254d0056b3e8033fe8e5 ("vf_scale: apply the same transform to the aspect during init that is applied per frame") {{{ $ ffmpeg -i PAR1035.avi -s 640x460 -an out.avi ffmpeg version N-32771-g3039c68, Copyright (c) 2000-2011 the FFmpeg developers built on Sep 22 2011 12:35:59 with gcc 4.5.3 configuration: --cc=/usr/local/gcc-4.5.3/bin/gcc libavutil 51. 16. 1 / 51. 16. 1 libavcodec 53. 16. 0 / 53. 16. 0 libavformat 53. 12. 0 / 53. 12. 0 libavdevice 53. 4. 0 / 53. 4. 0 libavfilter 2. 43. 2 / 2. 43. 2 libswscale 2. 1. 0 / 2. 1. 0 Seems stream 0 codec frame rate differs from container frame rate: 30000.00 (30000/1) -> 29.97 (30000/1001) Input #0, avi, from 'PAR1035.avi': Metadata: encoder : Lavf53.4.0 Duration: 00:04:57.16, start: 0.000000, bitrate: 28 kb/s Stream #0.0: Video: mpeg4 (Simple Profile) (DX50 / 0x30355844), yuv420p, 720x406 [SAR 1:1 DAR 360:203], 29.97 fps, 29.97 tbr, 29.97 tbn, 30k tbc Stream #0.1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16, 192 kb/s [buffer @ 0x12ea7c0] w:720 h:406 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param: [scale @ 0x12cb580] w:720 h:406 fmt:yuv420p -> w:640 h:460 fmt:yuv420p flags:0x4 [mpeg4 @ 0x12c76e0] Invalid pixel aspect ratio 1035/812, limit is 255/255 Output #0, avi, to 'out.avi': Metadata: encoder : Lavf53.4.0 Stream #0.0: Video: mpeg4, yuv420p, 640x460 [SAR 1035:812 DAR 360:203], q=2-31, 200 kb/s, 90k tbn, 29.97 tbc Stream mapping: Stream #0.0 -> #0.0 (mpeg4 -> mpeg4) Error while opening encoder for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height }}} -- Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/498> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

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#518(FFmpeg:new): The range of mpegts_pmt_start_pid is unnecessarily restrictive.
by FFmpeg 03 Oct '11

03 Oct '11

#518: The range of mpegts_pmt_start_pid is unnecessarily restrictive. -------------------------------------+------------------------------------- Reporter: linux_dr | Owner: michael Type: defect | Status: new Priority: normal | Component: FFmpeg Version: git- | Keywords: PMT PID master | Video-on-Demand VOD specifications Blocked By: | MPEG Transport Stream TS Reproduced by developer: 0 | Blocking: | Analyzed by developer: 0 -------------------------------------+------------------------------------- I am trying to create !CableLabs compliant VOD streams using ffmpeg. The spec for these files (!CableLabs Video-On-Demand Content Encoding Profiles Specification: http://www.cablelabs.com/projects/metadata/downloads/specs /MD-SP-VOD-CEP-I01-040107.pdf ) requires that the PMT have a PID of 0x01E0, decimal 480 (see section 4.5 on page 6). The lower bound on the mpegts_pmt_start_pid which appears to set the PID of the PMT has been given an artificial lower-bound of 0x1000, decimal 4096. Given this artificial lower bound, I can not set the PID to conform to the spec. My understanding is that PIDs less than 16 are reserved, but otherwise, I am unsure of any other reason for restricting the lower bound of the PMT PID. I have attached a minor patch that simply changes the lower bound on this particular argument. Please comment if you know of any problem this could cause elsewhere. Thank you, -Loren Osborn -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/518> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

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#526(avdevice:new): wrong CDIOContext define
by FFmpeg 03 Oct '11

03 Oct '11

#526: wrong CDIOContext define ----------------------------------+--------------------------------------- Reporter: chinshou | Type: defect Status: new | Priority: critical Component: avdevice | Version: unspecified Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | ----------------------------------+--------------------------------------- CDIOContext is lack of a member of AVClass* . which will cause av_close_input_file call to fail. I have attached the patch. regards chinshou -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/526> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

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