Re: [FFmpeg-user] buffer underflow - processing VOB files

2018-08-08 Thread Bob DeCarlo
Hi Carl Eugen and Paul, I dug into the source code and found the line of code causing the problem, referring to commit: ae9297097696f3d06417a6e8a5368d5f38a6edb4 I rolled back this one line of code and the issue went away: diff --git a/libavcodec/ac3_parser.c b/libavcodec/ac3_parser.c index f4

Re: [FFmpeg-user] buffer underflow - processing VOB files

2018-08-08 Thread Bob DeCarlo
Hi Carl Eugen and Paul, I dug into the source code and found the line of code causing the problem, referring to commit: ae9297097696f3d06417a6e8a5368d5f38a6edb4 I rolled back this one line of code and the issue went away: diff --git a/libavcodec/ac3_parser.c b/libavcodec/ac3_parser.cindex f461

[FFmpeg-user] buffer underflow - processing VOB files

2018-08-07 Thread Bob DeCarlo
>While this method is unorthodox and makes helping you needlessly >difficult, Sorry, I'm still learning the ropes... I found //streams.videolan.org/upload/ and placed the one  phasebtop1ntscdvd.VOB file there.  It this proper?  I did not have a TRAC number to fill in. >the bigger issue is that

Re: [FFmpeg-user] buffer underflow - processing VOB files

2018-08-07 Thread Carl Eugen Hoyos
2018-08-08 0:21 GMT+02:00, Bob DeCarlo : >>I sent out a google drive link. Let me know if this is OK. > > Just wondering if the video files were received or if I need to use > a different method to submit them? While this method is unorthodox and makes helping you needlessly difficult, the bigger

[FFmpeg-user] buffer underflow - processing VOB files

2018-08-07 Thread Bob DeCarlo
>All, >I sent out a google drive link. Let me know if this is OK. Just wondering if the video files were received or if I need to use a different method to submit them? Thanks, Bob ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/m

[FFmpeg-user] buffer underflow - processing VOB files

2018-08-02 Thread Bob DeCarlo
All, I sent out a google drive link. Let me know if this is OK. phasebtop1ntscdvd.VOB is a sample file created using a recent FFMPEG version from a video capture device.  The text file shows the text output of that recording.  This file reproduces the underflow issue as previously described.  M

Re: [FFmpeg-user] buffer underflow - processing VOB files

2018-08-02 Thread Carl Eugen Hoyos
2018-08-02 20:47 GMT+02:00, Carl Zwanzig : > On 8/2/2018 11:39 AM, Paul B Mahol wrote: >> Without sample we can not help you. > > Sure 'we' can, an input sample isn't needed to review the patch. > (A sample is only needed to _test_ the patch.) This is not completely true. > (It really looks like

Re: [FFmpeg-user] buffer underflow - processing VOB files

2018-08-02 Thread Paul B Mahol
On 8/2/18, Carl Zwanzig wrote: > On 8/2/2018 11:39 AM, Paul B Mahol wrote: >> Without sample we can not help you. > > Sure 'we' can, an input sample isn't needed to review the patch. (A sample > is only needed to _test_ the patch.) > > (It really looks like Bob's helping the ffmpeg community, not

Re: [FFmpeg-user] buffer underflow - processing VOB files

2018-08-02 Thread Carl Zwanzig
On 8/2/2018 11:39 AM, Paul B Mahol wrote: Without sample we can not help you. Sure 'we' can, an input sample isn't needed to review the patch. (A sample is only needed to _test_ the patch.) (It really looks like Bob's helping the ffmpeg community, not the other way around; he found a proble

Re: [FFmpeg-user] buffer underflow - processing VOB files

2018-08-02 Thread Paul B Mahol
On 8/2/18, Bob DeCarlo wrote: > Hi Paul, > (greatly appreciate your interest) > > The patch that fixes the core dump I think was added by you: > commit 0b86ea03d8415b5a3a6b07f3012a8097bca26ea5 > Author: Paul B Date: Fri Mar 30 10:14:48 2018 +0200 > avcodec/ac3: fix out of array access introduced

[FFmpeg-user] buffer underflow - processing VOB files

2018-08-02 Thread Bob DeCarlo
Hi Paul, (greatly appreciate your interest) The patch that fixes the core dump I think was added by you: commit 0b86ea03d8415b5a3a6b07f3012a8097bca26ea5 Author: Paul B Date:   Fri Mar 30 10:14:48 2018 +0200    avcodec/ac3: fix out of array access introduced previously   Signed-off-by: Paul

[FFmpeg-user] buffer underflow - processing VOB files

2018-08-02 Thread Bob DeCarlo
>Please share patch and input files. Thanks Paul... I generated the patch using git diff, this is not my code- just trying to be clear.  I found that the core dump was solved by this code change which allowed me to locate the code change that causes my buffer underrun problem.  Below are the con

Re: [FFmpeg-user] buffer underflow - processing VOB files

2018-08-02 Thread Paul B Mahol
On 8/2/18, Bob DeCarlo wrote: > > > > I located the fix for the core dump issue and create a patch: > > $ git diff 91bb871376730a2394ed0ae1a3fd4295977002d3 > 0b86ea03d8415b5a3a6b07f3012a8097bca26ea5 >p.patch > Next, I applied this patch to commits and found this commit to be the one > that causes

[FFmpeg-user] buffer underflow - processing VOB files

2018-08-02 Thread Bob DeCarlo
I located the fix for the core dump issue and create a patch: $ git diff 91bb871376730a2394ed0ae1a3fd4295977002d3 0b86ea03d8415b5a3a6b07f3012a8097bca26ea5 >p.patch Next, I applied this patch to commits and found this commit to be the one that causes by buffer under-run issue:  $ git checkou

[FFmpeg-user] buffer underflow - processing VOB files

2018-08-02 Thread Bob DeCarlo
Thanks for the initial feedback I switched back to Linux where I can build various versions of the code checked out from git.  The issue is reproduced at node: 0b86ea03d8415b5a3a6b07f3012a8097bca26ea5 This node seems OK ( the same sha as the OK zeranoe build) : e5819fa62930966e6fb905cef21c9

[FFmpeg-user] buffer underflow - processing VOB files

2018-08-02 Thread Bob DeCarlo
Hi, (plain text repost) This is my first post to ffmpeg, please advise if I misplaced this issue. I have been using ffmpeg for many years and now have an issue with the latest version: ffmpeg-20180731-481741e-win64-static When transcoding a VOB, ntsc-dvd, I get "buffer underflow" errors.  This is

Re: [FFmpeg-user] buffer underflow - processing VOB files

2018-08-02 Thread Moritz Barsnick
On Thu, Aug 02, 2018 at 02:18:17 +, Bob DeCarlo wrote: > Hi,This is my first post to ffmpeg, please advise if I misplaced this issue. No, it's correct here. Thanks for providing full information, and even figuring out which version introduced your issue. But may I kindly ask you to resend the

[FFmpeg-user] buffer underflow - processing VOB files

2018-08-01 Thread Bob DeCarlo
Hi,This is my first post to ffmpeg, please advise if I misplaced this issue.I have been using ffmpeg for many years and now have an issue with the latest version:ffmpeg-20180731-481741e-win64-static When transcoding a VOB, ntsc-dvd, I get "buffer underflow" errors.  This is especially true when