System.AccessViolationException when trying to open certain video files

[ekoivu]

Issue Title (System.AccessViolationException when trying to open certain video file)

When starting playback for certain video files, the player crashes with System.AccessViolationException.

Issue Categories

• [x] Bug
• [ ] Feature Request
• [ ] Question
• [ ] Not sure

Version Information

• [ ] NuGet Package Enter Version Number Here
• [x] Build From Master branch, Commit 002132eefd8bf79da42c4b51415419b8c4029893
• [ ] Build from Branch Name, Commit Enter commit id. Example: 704c482

Steps to Reproduce

1. Download video "LION KING - Circle of Life (KARAOKE) - Instrumental [Lyrics on screen, with backing vocals]" from youtube. https://www.youtube.com/watch?v=QL41lgDOQ9Q
2. Play the video using FFME.Windows.Sample.

Expected Results

• The video starts playing

Additional information

• Crash happens at VideoComponent.cs, line 275, call to sws_scale.
• All failing video files seem to have AVC format High@L3.1.

Here's full codec information by MediaInfo:

ID : 0 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L3.1 Format settings : CABAC / 4 Ref Frames Format settings, CABAC : Yes Format settings, Reference frames : 4 frames Codec ID : H264 Duration : 4 min 1 s Bit rate : 290 kb/s Width : 854 pixels Height : 480 pixels Display aspect ratio : 16:9 Frame rate mode : Variable Frame rate : 29.970 (30000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.024 Stream size : 8.39 MiB (67%) Writing library : x264 core 142 r2479 dd79a61 Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=4 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=abr / mbtree=1 / bitrate=290 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.41 / aq=1:1.00

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