Source Width must be even for YUV_420 colorspace

[ignace72]

Hello to all of you.
I am having a problem converting a really old film.
The characteristics of my source file:

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L4
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 4 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 2 h 9 min
Bit rate : 18.0 Mb/s
Width : 1 480 pixels
Height : 1 080 pixels
Display aspect ratio : 1.370
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.470
Stream size : 16.3 GiB (99%)
Writing library : x264 core 157 r2935 545de2f
Encoding settings : cabac=1 / ref=2 / deblock=1:0:0 / analyse=0x1:0x111 / me=hex / subme=6 / psy=1 / psy_rd=1.00:0. 00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=0 / cqm=0 / deadzone=21, 11 / fast_pskip=1 / chroma_qp_offset=- 2 / threads=18 / lookahead_threads=3 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=240 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=30 / rc=abr / mbtree=1 / bitrate=18000 / ratetol=1. 0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=20000 / vbv_bufsize=25000 / nal_hrd=none / filler=0 / ip_ratio=1.40 / aq=1:1.00
Language : French
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

My order is as follows:
ffmpeg -i Movie.mkv -map 0:v:0 -pix_fmt yuv420p10le -vf scale=-1:720 -f yuv4mpegpipe -strict -1 - | SvtAv1EncApp -i stdin --preset 6 --keyint 240 --input-depth 10 --crf 30 --rc 0 --passes 1 --film-grain 0 -b av1.ivf
My error message is as follows:

Svt[error]: Error Instance 1: Source Width must be even for YUV_420 colorspace
SvtMalloc[info]: you have no memory leak
av_interleaved_write_frame(): Broken tube
Pipe trailer write error: : Broken pipetime=00:00:00.04 bitrate=12587.3kbits/s speed=1.26x    
frame= 1 fps=0.0 q=-0.0 Lsize= 64kB time=00:00:00.04 bitrate=12587.3kbits/s speed=0.445x    
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 13803.389648%
Error closing the pipe file :: Broken pipe

Can someone point me in the right direction to solve my problem?
Thank you in advance.

[ArakiSatoshi]

The issue is here:

Width : 1 480 pixels
Height : 1 080 pixels

The -vf scale=-1:720 filter tells ffmpeg to downscale your video to 720p while preserving the aspect ratio. Essentially, you're telling it to produce the video of this resolution:

Width : 986,666... pixels
Height : 720 pixels

Which will round up to 987x720. 987 isn't an even number, so you get the "Source Width" error.

There's an easy workaround, though:

-vf scale=-2:720

Specifying 2 instead of 1 will round up to an even number, and it should resolve the issue.

The correct command would be:

ffmpeg -i Movie.mkv -map 0:v:0 -pix_fmt yuv420p10le -vf scale=-2:720 -f yuv4mpegpipe -strict -1 - | SvtAv1EncApp -i stdin --preset 6 --keyint 240 --input-depth 10 --crf 30 --rc 0 --passes 1 --film-grain 0 -b av1.ivf

Or:

ffmpeg -i Movie.mkv -map 0:v:0 -c:v libsvtav1 -pix_fmt yuv420p10le -vf scale=-2:720 -g 240 -crf 30 -preset 6 -pass 1 -svtav1-params rc=0:film-grain=0 av1.ivf

---

This issue keeps showing up every time I click on the GitHub page instead of the GitLab one, so I felt obligated to answer. For any further issues, please use the GitLab repository, since the development moved there:
https://gitlab.com/AOMediaCodec/SVT-AV1/-/issues