id summary reporter owner description type status priority milestone component version severity resolution keywords cc mlocked 10110 mythtranscode --mpeg2 Inserts Vertical-Line Artifacts Dave Sp "I use ""mythtranscode --mpeg2 --honorcutlist ..."" from the command line to create a cut version of a recording. When I play the result, vertical purple lines show up every 50 seconds. Each burst of purple lines lasts 20 frames, give or take a few. (If I don't use the ""--mpeg2"" option, the result has no purple lines, but it takes a lot longer to generate the file, and at the end of a long recording the audio gets out of sync.) The output from ""mythtranscode --mpeg ..."" has those purple vertical lines when played in mythvideo, mplayer, and vlc. I re-ran ""mythtranscode --mpeg ..."" with ""-v all"". It seems the purple lines coincide with the debug lines ""Inserting 0 I-Frames after #...."". Each time MPEG2fixup::Start had to call InsertFrame, deltaPTS was either 1201 or 1202, and ptsIncrement was 1501. If I prevent calling InsertFrame under those conditions, the end result has no vertical line artifacts every 50 seconds, but then handbrake-cli spits out hundreds of ""sync: video time didn't advance"" messages and mythvideo complains of lots of A/V sync issues and doesn't show the time properly. So it seems InsertFrame needs to be called when deltaPTS is either 1201 or 1202 and ptsIncrement is 1501. Is MPEG2fixup::InsertFrame supposed to insert a duplicate of the previous frame, or is it inserting a frame with no data (resulting in those vertical-line artifacts)? An example is attached of what those lines look like." Bug Report - General closed minor unknown MythTV - Mythtranscode 0.24-fixes medium Upstream Bug 1