June 2025 - FFmpeg-trac - lists.ffmpeg.org

#11610(swscale:new): scale with reference prevents video to be scaled with a second scale filter instance
by FFmpeg 03 Jun '25

03 Jun '25

#11610: scale with reference prevents video to be scaled with a second scale filter instance -------------------------------------+------------------------------------- Reporter: Alexander | Type: defect Status: new | Priority: normal Component: swscale | Version: 7.1 Keywords: scale | Blocked By: scale2ref | Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- == Summary of the bug: A user needs to overlay a logo which is scaled using a reference video as input. The reference video should be also scaled in the same command. **Result:** Scale filter fails to scale a video that is used as input for the reference. **Tests:** Logo scaled without reference video does not prevent video to be scaled (the video is scaled, logo scaled, logo overlayed). == How to reproduce: {{{ % ffmpeg -y -t 10 -i 'input.mp4' -loop 1 -t 13 -i logo.png -filter_complex "\ \ [0:v]scale=-2:720[prepaired]; \ [1:v][prepaired]scale=-1:rw/8[logo_scaled]; \ [prepaired][logo_scaled]overlay=10:10" -c:v libx264 -preset fast output.mp4 ffmpeg version N-119657-gf1b3e51950 [2025-05-22] [7.1.git] built with gcc 12 (Debian 12.2.0-14+deb12u1) }}} Patches should be submitted to the ffmpeg-devel mailing list and not this bug tracker. -- Ticket URL: <https://trac.ffmpeg.org/ticket/11610> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#10830(undetermined:new): Bug: MPEG-1/2 encoder output video missing end code
by FFmpeg 02 Jun '25

02 Jun '25

#10830: Bug: MPEG-1/2 encoder output video missing end code -------------------------------------+------------------------------------- Reporter: Nebulas | Type: defect Status: new | Priority: important Component: | Version: undetermined | unspecified Keywords: mpegvideo | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: When the MPEG-1/MPEG-2 (PS) video stream file (*.m1v/*.m2v) is encoded by the mpegvideo encoder, the end code of the video sequence (sequence_end_code, As defined in ISO/IEC 11172-2 2.4.2.2, or ISO/IEC 13818-2 6.2.2, “the bit string '000001B7' in hexadecimal”) in the output file is missing. How to reproduce: {{{% ffmpeg -i in.mp4 -an -c:v mpeg1video out.m1v}}} or {{{% ffmpeg -i in.mp4 -an out.m2v}}} ffmpeg version: Windows builts from gyan.dev, “ffmpeg-2024-01-24-git- 00b288da73-full_build” -- Ticket URL: <https://trac.ffmpeg.org/ticket/10830> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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#11298(undetermined:new): AMD VAAPI HEVC encoding a 1080p video results in a 1920x1088 one
by FFmpeg 01 Jun '25

01 Jun '25

#11298: AMD VAAPI HEVC encoding a 1080p video results in a 1920x1088 one -------------------------------------+------------------------------------- Reporter: lilydjwg | Type: defect Status: new | Priority: normal Component: | Version: git- undetermined | master Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Summary of the bug: I'm trying to encode a 1080p video in hevc_vaapi with and AMD display card, but the resulting video has a 1920x1088 dimension (when played by mpv / ffplay). How to reproduce: I built ffmpeg from latest master (e35587250c3e036261ea9cfc266e74730b6f60ae) to reproduce the bug: {{{ ./configure --disable-debug --disable-static --enable-shared \ --enable-gpl --disable-stripping --enable-libx265 --disable-x86asm }}} The command used is {{{ LD_LIBRARY_PATH='libavcodec:libavdevice:libavfilter:libavformat:libavutil:libpostproc:libswresample:libswscale' \ ./ffmpeg -hwaccel vaapi -hwaccel_output_format vaapi -i a.mkv \ -acodec copy -vcodec hevc_vaapi -rc_mode CQP -qp 36 a.mp4 }}} mpv outputs {{{ ● Video --vid=1 (hevc 1920x1080 60 fps) [default] ● Audio --aid=1 (aac 2ch 48000 Hz 160 kbps) [default] Using hardware decoding (vaapi). AO: [pipewire] 48000Hz stereo 2ch floatp VO: [gpu-next] 1920x1088 vaapi[nv12] AV: 00:00:01 / 00:00:03 (43%) A-V: 0.000 }}} Despite mpv / ffprobe / ffplay says the video stream is 1920x1080, it plays at 1920x1088. Actually I was doing screen recording with obs-studio and got this bug since at least ffmpeg 7.0.1. There was a patch (https://patchwork.ffmpeg.org/project/ffmpeg/patch/20240321170219.1487-1-Pri…) fixed this for 7.0.x but it no longer applies to 7.1. I'm using an AMD Radeon RX 6650 XT display card and so my only options are HEVC and AVC. This is not reproducible on Intel cards. -- Ticket URL: <https://trac.ffmpeg.org/ticket/11298> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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